bump version

Allowing user to invalidate paid invoice

BTCPayServer.Tests/BTCPayServer.Tests.csproj

@@ -7,9 +7,9 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.3.0-preview-20170720-02" />
-    <PackageReference Include="xunit" Version="2.2.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.2.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.5.0" />
+    <PackageReference Include="xunit" Version="2.3.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.3.1" />
   </ItemGroup>
 
   <ItemGroup>

BTCPayServer.Tests/BTCPayServerTester.cs

@@ -106,20 +106,21 @@ namespace BTCPayServer.Tests
                     .UseStartup<Startup>()
                     .Build();
             _Host.Start();
-            Runtime = (BTCPayServerRuntime)_Host.Services.GetService(typeof(BTCPayServerRuntime));
-            var watcher = (InvoiceWatcher)_Host.Services.GetService(typeof(InvoiceWatcher));
-            watcher.PollInterval = TimeSpan.FromMilliseconds(500);
-        }
+            InvoiceRepository = (InvoiceRepository)_Host.Services.GetService(typeof(InvoiceRepository));
 
-        public BTCPayServerRuntime Runtime
-        {
-            get; set;
+            var waiter = ((NBXplorerWaiterAccessor)_Host.Services.GetService(typeof(NBXplorerWaiterAccessor))).Instance;
+            while(waiter.State != NBXplorerState.Ready)
+            {
+                Thread.Sleep(10);
+            }
         }
+        
         public string HostName
         {
             get;
             internal set;
         }
+        public InvoiceRepository InvoiceRepository { get; private set; }
 
         public T GetService<T>()
         {

BTCPayServer.Tests/EclairTester.cs

@@ -0,0 +1,37 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Threading.Tasks;
+using BTCPayServer.Eclair;
+
+namespace BTCPayServer.Tests
+{
+    public class EclairTester
+    {
+        ServerTester parent;
+        public EclairTester(ServerTester parent, string environmentName, string defaultRPC, string defaultHost)
+        {
+            this.parent = parent;
+            RPC = new EclairRPCClient(new Uri(parent.GetEnvironment(environmentName, defaultRPC)), parent.Network);
+            P2PHost = parent.GetEnvironment(environmentName + "_HOST", defaultHost);
+        }
+
+        public EclairRPCClient RPC { get; }
+        public string P2PHost { get; }
+
+        NodeInfo _NodeInfo;
+        public async Task<NodeInfo> GetNodeInfoAsync()
+        {
+            if (_NodeInfo != null)
+                return _NodeInfo;
+            var info = await RPC.GetInfoAsync();
+            _NodeInfo = new NodeInfo(info.NodeId, P2PHost, info.Port);
+            return _NodeInfo;
+        }
+
+        public NodeInfo GetNodeInfo()
+        {
+            return GetNodeInfoAsync().GetAwaiter().GetResult();
+        }
+    }
+}

BTCPayServer.Tests/Logging/Logs.cs

@@ -71,7 +71,7 @@ namespace BTCPayServer.Tests.Logging
         public void LogInformation(string msg)
         {
             if (msg != null)
-                _Helper.WriteLine(Name + ":   " + msg);
+                _Helper.WriteLine(DateTimeOffset.UtcNow + " :" + Name + ":   " + msg);
         }
     }
     public class Logs

BTCPayServer.Tests/ServerTester.cs

@@ -1,4 +1,5 @@
 using BTCPayServer.Controllers;
+using System.Linq;
 using BTCPayServer.Models.AccountViewModels;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
@@ -16,6 +17,7 @@ using System.Runtime.CompilerServices;
 using System.Text;
 using System.Threading.Tasks;
 using System.Threading;
+using BTCPayServer.Eclair;
 
 namespace BTCPayServer.Tests
 {
@@ -56,9 +58,42 @@ namespace BTCPayServer.Tests
             PayTester.Port = int.Parse(GetEnvironment("TESTS_PORT", Utils.FreeTcpPort().ToString()));
             PayTester.HostName = GetEnvironment("TESTS_HOSTNAME", "127.0.0.1");
             PayTester.Start();
+
+            MerchantEclair = new EclairTester(this, "TEST_ECLAIR1", "http://127.0.0.1:30992/", "eclair1");
+            CustomerEclair = new EclairTester(this, "TEST_ECLAIR2", "http://127.0.0.1:30993/", "eclair2");
         }
 
-        private string GetEnvironment(string variable, string defaultValue)
+
+        /// <summary>
+        /// This will setup a channel going from customer to merchant
+        /// </summary>
+        public void PrepareLightning()
+        {
+            PrepareLightningAsync().GetAwaiter().GetResult();
+        }
+
+        public async Task PrepareLightningAsync()
+        {
+            // Activate segwit
+            var blockCount = ExplorerNode.GetBlockCountAsync();
+            // Fetch node info, but that in cache
+            var merchant = MerchantEclair.GetNodeInfoAsync();
+            var customer = CustomerEclair.GetNodeInfoAsync();
+            var channels = CustomerEclair.RPC.ChannelsAsync();
+            var connect = CustomerEclair.RPC.ConnectAsync(merchant.Result);
+            await Task.WhenAll(blockCount, merchant, customer, channels, connect);
+
+            // Mine until segwit is activated
+            if (blockCount.Result <= 432)
+            {
+                ExplorerNode.Generate(433 - blockCount.Result);
+            }
+        }
+
+        public EclairTester MerchantEclair { get; set; }
+        public EclairTester CustomerEclair { get; set; }
+
+        internal string GetEnvironment(string variable, string defaultValue)
         {
             var var = Environment.GetEnvironmentVariable(variable);
             return String.IsNullOrEmpty(var) ? defaultValue : var;
@@ -195,7 +230,7 @@ namespace BTCPayServer.Tests
                 var match = new TransactionMatch();
                 match.Outputs.Add(new KeyPathInformation() { ScriptPubKey = address.ScriptPubKey });
                 var content = new StringContent(new NBXplorer.Serializer(Network).ToString(match), new UTF8Encoding(false), "application/json");
-                var uri = controller.GetCallbackUriAsync(req).GetAwaiter().GetResult();
+                var uri = controller.GetCallbackUriAsync().GetAwaiter().GetResult();
 
                 HttpRequestMessage message = new HttpRequestMessage();
                 message.Method = HttpMethod.Post;
@@ -207,7 +242,7 @@ namespace BTCPayServer.Tests
             else
             {
 
-                var uri = controller.GetCallbackBlockUriAsync(req).GetAwaiter().GetResult();
+                var uri = controller.GetCallbackBlockUriAsync().GetAwaiter().GetResult();
                 HttpRequestMessage message = new HttpRequestMessage();
                 message.Method = HttpMethod.Post;
                 message.RequestUri = uri;

BTCPayServer.Tests/TestAccount.cs

@@ -10,6 +10,7 @@ using System.Collections.Generic;
 using System.Text;
 using System.Threading.Tasks;
 using Xunit;
+using NBXplorer.DerivationStrategy;
 
 namespace BTCPayServer.Tests
 {
@@ -55,14 +56,17 @@ namespace BTCPayServer.Tests
             var store = parent.PayTester.GetController<StoresController>(UserId);
             await store.CreateStore(new CreateStoreViewModel() { Name = "Test Store" });
             StoreId = store.CreatedStoreId;
+            DerivationScheme = new DerivationStrategyFactory(parent.Network).Parse(ExtKey.Neuter().ToString() + "-[legacy]");
             await store.UpdateStore(StoreId, new StoreViewModel()
             {
-                DerivationScheme = ExtKey.Neuter().ToString() + "-[legacy]",
+                DerivationScheme = DerivationScheme.ToString(),
                 SpeedPolicy = SpeedPolicy.MediumSpeed
             }, "Save");
             return store;
         }
 
+        public DerivationStrategyBase DerivationScheme { get; set; }
+
         private async Task RegisterAsync()
         {
             var account = parent.PayTester.GetController<AccountController>();

BTCPayServer.Tests/UnitTest1.cs

@@ -22,6 +22,7 @@ using BTCPayServer.Data;
 using Microsoft.EntityFrameworkCore;
 using BTCPayServer.Services.Rates;
 using Microsoft.Extensions.Caching.Memory;
+using BTCPayServer.Eclair;
 
 namespace BTCPayServer.Tests
 {
@@ -45,22 +46,22 @@ namespace BTCPayServer.Tests
             Assert.Equal(Money.Coins(1.1m), entity.GetCryptoDue());
             Assert.Equal(Money.Coins(1.1m), entity.GetTotalCryptoDue());
 
-            entity.Payments.Add(new PaymentEntity() { Output = new TxOut(Money.Coins(0.5m), new Key()) });
+            entity.Payments.Add(new PaymentEntity() { Output = new TxOut(Money.Coins(0.5m), new Key()), Accounted = true });
 
             //Since we need to spend one more txout, it should be 1.1 - 0,5 + 0.1
             Assert.Equal(Money.Coins(0.7m), entity.GetCryptoDue());
             Assert.Equal(Money.Coins(1.2m), entity.GetTotalCryptoDue());
 
-            entity.Payments.Add(new PaymentEntity() { Output = new TxOut(Money.Coins(0.2m), new Key()) });
+            entity.Payments.Add(new PaymentEntity() { Output = new TxOut(Money.Coins(0.2m), new Key()), Accounted = true });
             Assert.Equal(Money.Coins(0.6m), entity.GetCryptoDue());
             Assert.Equal(Money.Coins(1.3m), entity.GetTotalCryptoDue());
 
-            entity.Payments.Add(new PaymentEntity() { Output = new TxOut(Money.Coins(0.6m), new Key()) });
+            entity.Payments.Add(new PaymentEntity() { Output = new TxOut(Money.Coins(0.6m), new Key()), Accounted = true });
 
             Assert.Equal(Money.Zero, entity.GetCryptoDue());
             Assert.Equal(Money.Coins(1.3m), entity.GetTotalCryptoDue());
 
-            entity.Payments.Add(new PaymentEntity() { Output = new TxOut(Money.Coins(0.2m), new Key()) });
+            entity.Payments.Add(new PaymentEntity() { Output = new TxOut(Money.Coins(0.2m), new Key()), Accounted = true });
 
             Assert.Equal(Money.Zero, entity.GetCryptoDue());
             Assert.Equal(Money.Coins(1.3m), entity.GetTotalCryptoDue());
@@ -115,6 +116,24 @@ namespace BTCPayServer.Tests
             }
         }
 
+        [Fact]
+        public void CanUseLightMoney()
+        {
+            var light = LightMoney.MilliSatoshis(1);
+            Assert.Equal("0.00000000001", light.ToString());
+        }
+
+        [Fact]
+        public void CanSendLightningPayment()
+        {
+
+            using (var tester = ServerTester.Create())
+            {
+                tester.Start();
+                tester.PrepareLightning();
+            }
+        }
+
         [Fact]
         public void CanUseServerInitiatedPairingCode()
         {
@@ -194,6 +213,74 @@ namespace BTCPayServer.Tests
             }
         }
 
+        [Fact]
+        public void CanRBFPayment()
+        {
+            using (var tester = ServerTester.Create())
+            {
+                tester.Start();
+                var user = tester.NewAccount();
+                user.GrantAccess();
+                var invoice = user.BitPay.CreateInvoice(new Invoice()
+                {
+                    Price = 5000.0,
+                    Currency = "USD"
+                }, Facade.Merchant);
+
+                var payment1 = Money.Coins(0.04m);
+                var payment2 = Money.Coins(0.08m);
+                var tx1 = new uint256(tester.ExplorerNode.SendCommand("sendtoaddress", new object[]
+                {
+                    invoice.BitcoinAddress.ToString(),
+                    payment1.ToString(),
+                    null, //comment
+                    null, //comment_to
+                    false, //subtractfeefromamount
+                    true, //replaceable
+                }).ResultString);
+                var invoiceAddress = BitcoinAddress.Create(invoice.BitcoinAddress, tester.Network);
+
+                Eventually(() =>
+                {
+                    tester.SimulateCallback(invoiceAddress);
+                    invoice = user.BitPay.GetInvoice(invoice.Id);
+                    Assert.Equal(payment1, invoice.BtcPaid);
+                    invoiceAddress = BitcoinAddress.Create(invoice.BitcoinAddress, tester.Network);
+                });
+
+                var tx = tester.ExplorerNode.GetRawTransaction(new uint256(tx1));
+                foreach (var input in tx.Inputs)
+                {
+                    input.ScriptSig = Script.Empty; //Strip signatures
+                }
+                var change = tx.Outputs.First(o => o.Value != payment1);
+                var output = tx.Outputs.First(o => o.Value == payment1);
+                output.Value = payment2;
+                output.ScriptPubKey = invoiceAddress.ScriptPubKey;
+                change.Value -= (payment2 - payment1) * 2; //Add more fees
+                var replaced = tester.ExplorerNode.SignRawTransaction(tx);
+                tester.ExplorerNode.SendRawTransaction(replaced);
+                var test = tester.ExplorerClient.Sync(user.DerivationScheme, null);
+                Eventually(() =>
+                {
+                    tester.SimulateCallback(invoiceAddress);
+                    invoice = user.BitPay.GetInvoice(invoice.Id);
+                    Assert.Equal(payment2, invoice.BtcPaid);
+                });
+            }
+        }
+
+        [Fact]
+        public void CanParseFilter()
+        {
+            var filter = "storeid:abc status:abed blabhbalh ";
+            var search = new SearchString(filter);
+            Assert.Equal("storeid:abc status:abed blabhbalh", search.ToString());
+            Assert.Equal("blabhbalh", search.TextSearch);
+            Assert.Equal("abc", search.Filters["storeid"]);
+            Assert.Equal("abed", search.Filters["status"]);
+        }
+
         [Fact]
         public void InvoiceFlowThroughDifferentStatesCorrectly()
         {
@@ -217,19 +304,23 @@ namespace BTCPayServer.Tests
                 }, Facade.Merchant);
                 var repo = tester.PayTester.GetService<InvoiceRepository>();
                 var ctx = tester.PayTester.GetService<ApplicationDbContextFactory>().CreateContext();
-                var textSearchResult = tester.PayTester.Runtime.InvoiceRepository.GetInvoices(new InvoiceQuery()
-                {
-                    StoreId = user.StoreId,
-                    TextSearch = invoice.OrderId
-                }).GetAwaiter().GetResult();
-                Assert.Equal(1, textSearchResult.Length);
-                textSearchResult = tester.PayTester.Runtime.InvoiceRepository.GetInvoices(new InvoiceQuery()
-                {
-                    StoreId = user.StoreId,
-                    TextSearch = invoice.Id
-                }).GetAwaiter().GetResult();
 
-                Assert.Equal(1, textSearchResult.Length);
+                Eventually(() =>
+                {
+                    var textSearchResult = tester.PayTester.InvoiceRepository.GetInvoices(new InvoiceQuery()
+                    {
+                        StoreId = user.StoreId,
+                        TextSearch = invoice.OrderId
+                    }).GetAwaiter().GetResult();
+                    Assert.Equal(1, textSearchResult.Length);
+                    textSearchResult = tester.PayTester.InvoiceRepository.GetInvoices(new InvoiceQuery()
+                    {
+                        StoreId = user.StoreId,
+                        TextSearch = invoice.Id
+                    }).GetAwaiter().GetResult();
+
+                    Assert.Equal(1, textSearchResult.Length);
+                });
 
                 invoice = user.BitPay.GetInvoice(invoice.Id, Facade.Merchant);
                 Assert.Equal(Money.Coins(0), invoice.BtcPaid);

BTCPayServer.Tests/docker-compose.yml

@@ -1,5 +1,8 @@
 version: "3"
 
+# Run `docker-compose up dev` for bootstrapping your development environment
+# Doing so will expose eclair API, NBXplorer, Bitcoind RPC and postgres port to the host so that tests can Run,
+# The Visual Studio launch setting `Docker-Regtest` is configured to use this environment.
 services:
 
   tests:
@@ -10,18 +13,36 @@ services:
       TESTS_RPCCONNECTION: server=http://bitcoind:43782;ceiwHEbqWI83:DwubwWsoo3
       TESTS_NBXPLORERURL: http://nbxplorer:32838/
       TESTS_POSTGRES: User ID=postgres;Host=postgres;Port=5432;Database=btcpayserver
-      TESTS_FAKECALLBACK: 'true'
+      TESTS_FAKECALLBACK: 'false'
       TESTS_PORT: 80
       TESTS_HOSTNAME: tests
+      TEST_ECLAIR1: http://eclair1:8080/
+      TEST_ECLAIR2: http://eclair2:8080/
     expose:
       - "80"
     links:
+      - bitcoind
       - nbxplorer
+      - eclair1
+      - eclair2
     extra_hosts: 
       - "tests:127.0.0.1"
 
+  # The dev container is not actually used, it is just handy to run `docker-compose up dev` to start all services
+  dev: 
+    image: nicolasdorier/docker-bitcoin:0.15.0.1
+    environment:
+      BITCOIN_EXTRA_ARGS: |
+        regtest=1
+        connect=bitcoind:39388
+    links:
+      - bitcoind
+      - nbxplorer
+      - eclair1
+      - eclair2
+
   nbxplorer:
-    image: nicolasdorier/nbxplorer:1.0.0.18
+    image: nicolasdorier/nbxplorer:1.0.0.32
     ports:
       - "32838:32838"
     expose: 
@@ -33,24 +54,79 @@ services:
       NBXPLORER_RPCPASSWORD: DwubwWsoo3
       NBXPLORER_NODEENDPOINT: bitcoind:39388
       NBXPLORER_BIND: 0.0.0.0:32838
+      NBXPLORER_VERBOSE: 1
       NBXPLORER_NOAUTH: 1
     links:
       - bitcoind
       - postgres
 
+  eclair1:
+    image: acinq/eclair:latest
+    environment:
+      JAVA_OPTS: >
+        -Xmx512m 
+        -Declair.printToConsole 
+        -Declair.bitcoind.host=bitcoind 
+        -Declair.bitcoind.rpcport=43782 
+        -Declair.bitcoind.rpcuser=ceiwHEbqWI83 
+        -Declair.bitcoind.rpcpassword=DwubwWsoo3 
+        -Declair.bitcoind.zmq=tcp://bitcoind:29000
+        -Declair.chain=regtest
+        -Declair.api.binding-ip=0.0.0.0
+    links:
+      - bitcoind
+    ports:
+      - "30992:8080" # api port
+    expose:
+      - "9735" # server port
+      - "8080" # api port
+
+  eclair2:
+    image: acinq/eclair:latest
+    environment:
+      JAVA_OPTS: >
+        -Xmx512m 
+        -Declair.printToConsole 
+        -Declair.bitcoind.host=bitcoind 
+        -Declair.bitcoind.rpcport=43782 
+        -Declair.bitcoind.rpcuser=ceiwHEbqWI83 
+        -Declair.bitcoind.rpcpassword=DwubwWsoo3 
+        -Declair.bitcoind.zmq=tcp://bitcoind:29000
+        -Declair.chain=regtest
+        -Declair.api.binding-ip=0.0.0.0
+    links:
+      - bitcoind
+    ports:
+      - "30993:8080" # api port
+    expose:
+      - "9735" # server port
+      - "8080" # api port
+
   bitcoind:
     container_name: btcpayserver_dev_bitcoind
     image: nicolasdorier/docker-bitcoin:0.15.0.1
-    ports:
-      - "43782:43782"
-      - "39388:39388"
     environment:
-      BITCOIN_EXTRA_ARGS: "rpcuser=ceiwHEbqWI83\nrpcpassword=DwubwWsoo3\nregtest=1\nrpcport=43782\nport=39388\nwhitelist=0.0.0.0/0"
+      BITCOIN_EXTRA_ARGS: |
+        rpcuser=ceiwHEbqWI83
+        rpcpassword=DwubwWsoo3
+        regtest=1
+        server=1
+        rpcport=43782
+        port=39388
+        whitelist=0.0.0.0/0
+        zmqpubrawblock=tcp://0.0.0.0:29000
+        zmqpubrawtx=tcp://0.0.0.0:29000
+        txindex=1
+    ports:
+      - "43782:43782" # RPC
     expose:
-      - "43782"
-      - "39388"
+      - "43782" # RPC
+      - "39388" # P2P
+      - "29000" # zmq
 
   postgres:
     image:  postgres:9.6.5
     ports:
-      - "39372:5432"
+      - "39372:5432"
+    expose:
+      - "5432"

BTCPayServer/Authentication/TokenRepository.cs

@@ -69,7 +69,7 @@ namespace BTCPayServer.Authentication
             {
                 var now = DateTime.UtcNow;
                 var expiration = DateTime.UtcNow + TimeSpan.FromMinutes(15);
-                await ctx.PairingCodes.AddAsync(new PairingCodeData()
+                ctx.PairingCodes.Add(new PairingCodeData()
                 {
                     Id = pairingCodeId,
                     DateCreated = now,

BTCPayServer/BTCPayServer.csproj

@@ -2,7 +2,7 @@
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <TargetFramework>netcoreapp2.0</TargetFramework>
-		<Version>1.0.0.26</Version>
+		<Version>1.0.0.45</Version>
   </PropertyGroup>
   <ItemGroup>
     <Compile Remove="Build\dockerfiles\**" />
@@ -18,13 +18,13 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Hangfire" Version="1.6.17" />
-    <PackageReference Include="Hangfire.MemoryStorage" Version="1.5.1" />
+    <PackageReference Include="Hangfire.MemoryStorage" Version="1.5.2" />
     <PackageReference Include="Hangfire.PostgreSql" Version="1.4.8.1" />
     <PackageReference Include="Microsoft.Extensions.Logging.Filter" Version="1.1.2" />
-    <PackageReference Include="NBitcoin" Version="4.0.0.38" />
-    <PackageReference Include="NBitpayClient" Version="1.0.0.12" />	  
+    <PackageReference Include="NBitcoin" Version="4.0.0.50" />
+    <PackageReference Include="NBitpayClient" Version="1.0.0.13" />	  
     <PackageReference Include="DBreeze" Version="1.87.0" />
-    <PackageReference Include="NBXplorer.Client" Version="1.0.0.17" />
+    <PackageReference Include="NBXplorer.Client" Version="1.0.0.20" />
     <PackageReference Include="NicolasDorier.CommandLine" Version="1.0.0.1" />
     <PackageReference Include="NicolasDorier.CommandLine.Configuration" Version="1.0.0.2" />
     <PackageReference Include="NicolasDorier.StandardConfiguration" Version="1.0.0.13" />
@@ -34,9 +34,9 @@
   </ItemGroup>
 
 	<ItemGroup>
-		<PackageReference Include="Microsoft.AspNetCore.All" Version="2.0.0" />
-		<PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="2.0.0" PrivateAssets="All" />
-		<PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="2.0.0" PrivateAssets="All" />
+		<PackageReference Include="Microsoft.AspNetCore.All" Version="2.0.3" />
+		<PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="2.0.1" PrivateAssets="All" />
+		<PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="2.0.1" PrivateAssets="All" />
 	</ItemGroup>
 
 	<ItemGroup>

BTCPayServer/CompositeDisposable.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace BTCPayServer
+{
+    public class CompositeDisposable : IDisposable
+    {
+        List<IDisposable> _Disposables = new List<IDisposable>();
+        public void Add(IDisposable disposable) { _Disposables.Add(disposable); }
+        public void Dispose()
+        {
+            foreach (var d in _Disposables)
+                d.Dispose();
+            _Disposables.Clear();
+        }
+    }
+}

BTCPayServer/Configuration/BTCPayServerOptions.cs

@@ -55,18 +55,20 @@ namespace BTCPayServer.Configuration
 
             Explorer = conf.GetOrDefault<Uri>("explorer.url", networkInfo.DefaultExplorerUrl);
             CookieFile = conf.GetOrDefault<string>("explorer.cookiefile", networkInfo.DefaultExplorerCookieFile);
-            RequireHttps = conf.GetOrDefault<bool>("requirehttps", false);
             PostgresConnectionString = conf.GetOrDefault<string>("postgres", null);
-        }
-
-        public bool RequireHttps
-        {
-            get; set;
+            ExternalUrl = conf.GetOrDefault<Uri>("externalurl", null);
+            InternalUrl = conf.GetOrDefault<Uri>("internalurl", null);
         }
         public string PostgresConnectionString
         {
             get;
             set;
         }
+        public Uri ExternalUrl
+        {
+            get;
+            set;
+        }
+        public Uri InternalUrl { get; private set; }
     }
 }

BTCPayServer/Configuration/BTCPayServerRuntime.cs

@@ -1,113 +0,0 @@
-using BTCPayServer.Authentication;
-using Microsoft.Extensions.Logging;
-using BTCPayServer.Logging;
-using DBreeze;
-using NBitcoin;
-using NBXplorer;
-using NBXplorer.DerivationStrategy;
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Text;
-using System.Threading;
-using System.Threading.Tasks;
-using Microsoft.EntityFrameworkCore;
-using BTCPayServer.Data;
-using BTCPayServer.Services.Invoices;
-using BTCPayServer.Services.Wallets;
-
-namespace BTCPayServer.Configuration
-{
-    public class BTCPayServerRuntime : IDisposable
-    {
-        public ExplorerClient Explorer
-        {
-            get;
-            private set;
-        }
-
-        public void Configure(BTCPayServerOptions opts)
-        {
-            ConfigureAsync(opts).GetAwaiter().GetResult();
-        }
-        public async Task ConfigureAsync(BTCPayServerOptions opts)
-        {
-            Network = opts.Network;
-            Explorer = new ExplorerClient(opts.Network, opts.Explorer);
-
-            if (!Explorer.SetCookieAuth(opts.CookieFile))
-                Explorer.SetNoAuth();
-
-            CancellationTokenSource cts = new CancellationTokenSource(30000);
-            try
-            {
-                Logs.Configuration.LogInformation("Trying to connect to explorer " + Explorer.Address.AbsoluteUri);
-                await Explorer.WaitServerStartedAsync(cts.Token).ConfigureAwait(false);
-                Logs.Configuration.LogInformation("Connection successfull");
-            }
-            catch (Exception ex)
-            {
-                throw new ConfigException($"Could not connect to NBXplorer, {ex.Message}");
-            }
-            DBreezeEngine db = new DBreezeEngine(CreateDBPath(opts, "TokensDB"));
-            _Resources.Add(db);
-
-            db = new DBreezeEngine(CreateDBPath(opts, "InvoiceDB"));
-            _Resources.Add(db);
-
-            ApplicationDbContextFactory dbContext = null;
-            if (opts.PostgresConnectionString == null)
-            {
-                var connStr = "Data Source=" + Path.Combine(opts.DataDir, "sqllite.db");
-                Logs.Configuration.LogInformation($"SQLite DB used ({connStr})");
-                dbContext = new ApplicationDbContextFactory(DatabaseType.Sqlite, connStr);
-            }
-            else
-            {
-                Logs.Configuration.LogInformation($"Postgres DB used ({opts.PostgresConnectionString})");
-                dbContext = new ApplicationDbContextFactory(DatabaseType.Postgres, opts.PostgresConnectionString);
-            }
-            DBFactory = dbContext;
-            InvoiceRepository = new InvoiceRepository(dbContext, db, Network);
-        }
-
-        private static string CreateDBPath(BTCPayServerOptions opts, string name)
-        {
-            var dbpath = Path.Combine(opts.DataDir, name);
-            if (!Directory.Exists(dbpath))
-                Directory.CreateDirectory(dbpath);
-            return dbpath;
-        }
-
-        List<IDisposable> _Resources = new List<IDisposable>();
-
-        public void Dispose()
-        {
-            lock (_Resources)
-            {
-                foreach (var r in _Resources)
-                {
-                    r.Dispose();
-                }
-                _Resources.Clear();
-            }
-        }
-
-        public Network Network
-        {
-            get;
-            private set;
-        }
-        public InvoiceRepository InvoiceRepository
-        {
-            get;
-            set;
-        }
-        public ApplicationDbContextFactory DBFactory
-        {
-            get;
-            set;
-        }
-    }
-
-}

BTCPayServer/Configuration/DefaultConfiguration.cs

@@ -19,18 +19,18 @@ namespace BTCPayServer.Configuration
         {
             CommandLineApplication app = new CommandLineApplication(true)
             {
-                FullName = "NBXplorer\r\nLightweight block explorer for tracking HD wallets",
-                Name = "NBXplorer"
+                FullName = "BTCPay\r\nOpen source, self-hosted payment processor.",
+                Name = "BTCPay"
             };
             app.HelpOption("-? | -h | --help");
             app.Option("-n | --network", $"Set the network among ({NetworkInformation.ToStringAll()}) (default: {Network.Main.ToString()})", CommandOptionType.SingleValue);
             app.Option("--testnet | -testnet", $"Use testnet", CommandOptionType.BoolValue);
             app.Option("--regtest | -regtest", $"Use regtest", CommandOptionType.BoolValue);
-            app.Option("--requirehttps", $"Will redirect to https version of the website (default: false)", CommandOptionType.BoolValue);
             app.Option("--postgres", $"Connection string to postgres database (default: sqlite is used)", CommandOptionType.SingleValue);
             app.Option("--explorerurl", $"Url of the NBxplorer (default: : Default setting of NBXplorer for the network)", CommandOptionType.SingleValue);
             app.Option("--explorercookiefile", $"Path to the cookie file (default: Default setting of NBXplorer for the network)", CommandOptionType.SingleValue);
-
+            app.Option("--externalurl", $"The expected external url of this service, to use if BTCPay is behind a reverse proxy (default: empty, use the incoming HTTP request to figure out)", CommandOptionType.SingleValue);
+            app.Option("--internalurl", $"The expected internal url of this service, this set NBXplorer callback addresses (default: empty, use the incoming HTTP request to figure out)", CommandOptionType.SingleValue);
             return app;
         }
 
@@ -77,7 +77,6 @@ namespace BTCPayServer.Configuration
             builder.AppendLine("#regtest=0");
             builder.AppendLine();
             builder.AppendLine("### Server settings ###");
-            builder.AppendLine("#requirehttps=0");
             builder.AppendLine("#port=" + network.DefaultPort);
             builder.AppendLine("#bind=127.0.0.1");
             builder.AppendLine();

BTCPayServer/Controllers/AccountController.cs

@@ -235,8 +235,11 @@ namespace BTCPayServer.Controllers
 
         [HttpGet]
         [AllowAnonymous]
-        public IActionResult Register(string returnUrl = null)
+        public async Task<IActionResult> Register(string returnUrl = null)
         {
+            var policies = await _SettingsRepository.GetSettingAsync<PoliciesSettings>() ?? new PoliciesSettings();
+            if (policies.LockSubscription)
+                return RedirectToAction(nameof(HomeController.Index), "Home");
             ViewData["ReturnUrl"] = returnUrl;
             return View();
         }
@@ -247,9 +250,11 @@ namespace BTCPayServer.Controllers
         public async Task<IActionResult> Register(RegisterViewModel model, string returnUrl = null)
         {
             ViewData["ReturnUrl"] = returnUrl;
+            var policies = await _SettingsRepository.GetSettingAsync<PoliciesSettings>() ?? new PoliciesSettings();
+            if (policies.LockSubscription)
+                return RedirectToAction(nameof(HomeController.Index), "Home");
             if (ModelState.IsValid)
             {
-                var policies = await _SettingsRepository.GetSettingAsync<PoliciesSettings>() ?? new PoliciesSettings();
                 var user = new ApplicationUser { UserName = model.Email, Email = model.Email, RequiresEmailConfirmation = policies.RequiresConfirmedEmail };
                 var result = await _userManager.CreateAsync(user, model.Password);
                 if (result.Succeeded)

BTCPayServer/Controllers/CallbackController.cs

@@ -15,6 +15,11 @@ using System.IO;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using BTCPayServer.Configuration;
+using BTCPayServer.Events;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Hosting.Server.Features;
+using Microsoft.AspNetCore.Hosting.Server;
 
 namespace BTCPayServer.Controllers
 {
@@ -29,18 +34,23 @@ namespace BTCPayServer.Controllers
         }
         SettingsRepository _Settings;
         Network _Network;
-        InvoiceWatcher _Watcher;
         ExplorerClient _Explorer;
-
+        BTCPayServerOptions _Options;
+        EventAggregator _EventAggregator;
+        IServer _Server;
         public CallbackController(SettingsRepository repo,
                                   ExplorerClient explorer,
-                                  InvoiceWatcher watcher,
+                                  EventAggregator eventAggregator,
+                                  BTCPayServerOptions options,
+                                  IServer server,
                                   Network network)
         {
             _Settings = repo;
             _Network = network;
-            _Watcher = watcher;
             _Explorer = explorer;
+            _Options = options;
+            _EventAggregator = eventAggregator;
+            _Server = server;
         }
 
         [Route("callbacks/transactions")]
@@ -48,7 +58,6 @@ namespace BTCPayServer.Controllers
         public async Task NewTransaction(string token)
         {
             await AssertToken(token);
-            Logs.PayServer.LogInformation("New transaction callback");
             //We don't want to register all the json converter at MVC level, so we parse here
             var serializer = new NBXplorer.Serializer(_Network);
             var content = await new StreamReader(Request.Body, new UTF8Encoding(false), false, 1024, true).ReadToEndAsync();
@@ -56,7 +65,10 @@ namespace BTCPayServer.Controllers
 
             foreach (var output in match.Outputs)
             {
-                await _Watcher.NotifyReceived(output.ScriptPubKey);
+                var evt = new TxOutReceivedEvent();
+                evt.ScriptPubKey = output.ScriptPubKey;
+                evt.Address = output.ScriptPubKey.GetDestinationAddress(_Network);
+                _EventAggregator.Publish(evt);
             }
         }
 
@@ -65,8 +77,7 @@ namespace BTCPayServer.Controllers
         public async Task NewBlock(string token)
         {
             await AssertToken(token);
-            Logs.PayServer.LogInformation("New block callback");
-            await _Watcher.NotifyBlock();
+            _EventAggregator.Publish(new NewBlockEvent());
         }
 
         private async Task AssertToken(string token)
@@ -76,15 +87,15 @@ namespace BTCPayServer.Controllers
                 throw new BTCPayServer.BitpayHttpException(400, "invalid-callback-token");
         }
 
-        public async Task<Uri> GetCallbackUriAsync(HttpRequest request)
+        public async Task<Uri> GetCallbackUriAsync()
         {
             string token = await GetToken();
-            return new Uri(request.GetAbsoluteRoot() + "/callbacks/transactions?token=" + token);
+            return BuildCallbackUri("callbacks/transactions?token=" + token);
         }
 
-        public async Task RegisterCallbackUriAsync(DerivationStrategyBase derivationScheme, HttpRequest request)
+        public async Task RegisterCallbackUriAsync(DerivationStrategyBase derivationScheme)
         {
-            var uri = await GetCallbackUriAsync(request);
+            var uri = await GetCallbackUriAsync();
             await _Explorer.SubscribeToWalletAsync(uri, derivationScheme);
         }
 
@@ -100,15 +111,31 @@ namespace BTCPayServer.Controllers
             return token;
         }
 
-        public async Task<Uri> GetCallbackBlockUriAsync(HttpRequest request)
+        public async Task<Uri> GetCallbackBlockUriAsync()
         {
             string token = await GetToken();
-            return new Uri(request.GetAbsoluteRoot() + "/callbacks/blocks?token=" + token);
+            return BuildCallbackUri("callbacks/blocks?token=" + token);
         }
 
-        public async Task<Uri> RegisterCallbackBlockUriAsync(HttpRequest request)
+        private Uri BuildCallbackUri(string callbackPath)
+        {
+            var address = _Server.Features.Get<IServerAddressesFeature>().Addresses
+                                 .Select(c => new Uri(TransformToRoutable(c)))
+                                 .First();
+            var baseUrl = _Options.InternalUrl == null ? address.AbsoluteUri : _Options.InternalUrl.AbsoluteUri;
+            baseUrl = baseUrl.WithTrailingSlash();
+            return new Uri(baseUrl + callbackPath);
+        }
+
+        private string TransformToRoutable(string host)
+        {
+            if (host.StartsWith("http://0.0.0.0"))
+                host = host.Replace("http://0.0.0.0", "http://127.0.0.1");
+            return host;
+        }
+
+        public async Task<Uri> RegisterCallbackBlockUriAsync(Uri uri)
         {
-            var uri = await GetCallbackBlockUriAsync(request);
             await _Explorer.SubscribeToBlocksAsync(uri);
             return uri;
         }

BTCPayServer/Controllers/InvoiceController.UI.cs

@@ -15,19 +15,22 @@ using System.Linq;
 using System.Security.Claims;
 using System.Text;
 using System.Threading.Tasks;
+using BTCPayServer.Services.Rates;
+using System.Net.WebSockets;
+using System.Threading;
+using BTCPayServer.Events;
 
 namespace BTCPayServer.Controllers
 {
     public partial class InvoiceController
     {
-
         [HttpPost]
         [Route("invoices/{invoiceId}")]
-        public async Task<IActionResult> Invoice(string invoiceId, string command)
+        public IActionResult Invoice(string invoiceId, string command)
         {
             if (command == "refresh")
             {
-                await _Watcher.WatchAsync(invoiceId, true);
+                _Watcher.Watch(invoiceId);
             }
             StatusMessage = "Invoice is state is being refreshed, please refresh the page soon...";
             return RedirectToAction(nameof(Invoice), new
@@ -92,27 +95,6 @@ namespace BTCPayServer.Controllers
             return View(model);
         }
 
-
-        static Dictionary<string, CultureInfo> _CurrencyProviders = new Dictionary<string, CultureInfo>();
-        private IFormatProvider GetCurrencyProvider(string currency)
-        {
-            lock (_CurrencyProviders)
-            {
-                if (_CurrencyProviders.Count == 0)
-                {
-                    foreach (var culture in CultureInfo.GetCultures(CultureTypes.AllCultures).Where(c => !c.IsNeutralCulture))
-                    {
-                        try
-                        {
-                            _CurrencyProviders.TryAdd(new RegionInfo(culture.LCID).ISOCurrencySymbol, culture);
-                        }
-                        catch { }
-                    }
-                }
-                return _CurrencyProviders.TryGet(currency);
-            }
-        }
-
         [HttpGet]
         [Route("i/{invoiceId}")]
         [Route("invoice")]
@@ -139,7 +121,7 @@ namespace BTCPayServer.Controllers
                 return null;
             var store = await _StoreRepository.FindStore(invoice.StoreId);
             var dto = invoice.EntityToDTO();
-
+            var currency = invoice.ProductInformation.Currency;
             var model = new PaymentModel()
             {
                 ServerUrl = HttpContext.Request.GetAbsoluteRoot(),
@@ -153,7 +135,7 @@ namespace BTCPayServer.Controllers
                 ExpirationSeconds = Math.Max(0, (int)(invoice.ExpirationTime - DateTimeOffset.UtcNow).TotalSeconds),
                 MaxTimeSeconds = (int)(invoice.ExpirationTime - invoice.InvoiceTime).TotalSeconds,
                 ItemDesc = invoice.ProductInformation.ItemDesc,
-                Rate = invoice.Rate.ToString("C", GetCurrencyProvider(invoice.ProductInformation.Currency)),
+                Rate = invoice.Rate.ToString("C", _CurrencyNameTable.GetCurrencyProvider(currency)) + $" ({currency})",
                 MerchantRefLink = invoice.RedirectURL ?? "/",
                 StoreName = store.StoreName,
                 TxFees = invoice.TxFee.ToString(),
@@ -189,6 +171,73 @@ namespace BTCPayServer.Controllers
             return Json(model);
         }
 
+        [HttpGet]
+        [Route("i/{invoiceId}/status/ws")]
+        public async Task<IActionResult> GetStatusWebSocket(string invoiceId)
+        {
+            if (!HttpContext.WebSockets.IsWebSocketRequest)
+                return NotFound();
+            var invoice = await _InvoiceRepository.GetInvoice(null, invoiceId);
+            if (invoice == null || invoice.Status == "complete" || invoice.Status == "invalid" || invoice.Status == "expired")
+                return NotFound();
+            var webSocket = await HttpContext.WebSockets.AcceptWebSocketAsync();
+            CompositeDisposable leases = new CompositeDisposable();
+            try
+            {
+                _EventAggregator.Subscribe<Events.InvoiceDataChangedEvent>(async o => await NotifySocket(webSocket, o.InvoiceId, invoiceId));
+                _EventAggregator.Subscribe<Events.InvoicePaymentEvent>(async o => await NotifySocket(webSocket, o.InvoiceId, invoiceId));
+                _EventAggregator.Subscribe<Events.InvoiceStatusChangedEvent>(async o => await NotifySocket(webSocket, o.InvoiceId, invoiceId));
+                while (true)
+                {
+                    var message = await webSocket.ReceiveAsync(DummyBuffer, default(CancellationToken));
+                    if (message.MessageType == WebSocketMessageType.Close)
+                        break;
+                }
+            }
+            finally
+            {
+                leases.Dispose();
+                await CloseSocket(webSocket);
+            }
+            return new NoResponse();
+        }
+
+        class NoResponse : IActionResult
+        {
+            public Task ExecuteResultAsync(ActionContext context)
+            {
+                return Task.CompletedTask;
+            }
+        }
+
+        ArraySegment<Byte> DummyBuffer = new ArraySegment<Byte>(new Byte[1]);
+        private async Task NotifySocket(WebSocket webSocket, string invoiceId, string expectedId)
+        {
+            if (invoiceId != expectedId || webSocket.State != WebSocketState.Open)
+                return;
+            CancellationTokenSource cts = new CancellationTokenSource();
+            cts.CancelAfter(5000);
+            try
+            {
+                await webSocket.SendAsync(DummyBuffer, WebSocketMessageType.Binary, true, cts.Token);
+            }
+            catch { await CloseSocket(webSocket); }
+        }
+
+        private static async Task CloseSocket(WebSocket webSocket)
+        {
+            try
+            {
+                if (webSocket.State == WebSocketState.Open)
+                {
+                    CancellationTokenSource cts = new CancellationTokenSource();
+                    cts.CancelAfter(5000);
+                    await webSocket.CloseAsync(WebSocketCloseStatus.NormalClosure, "Closing", cts.Token);
+                }
+            }
+            finally { webSocket.Dispose(); }
+        }
+
         [HttpPost]
         [Route("i/{invoiceId}/UpdateCustomer")]
         public async Task<IActionResult> UpdateCustomer(string invoiceId, [FromBody]UpdateCustomerModel data)
@@ -208,12 +257,15 @@ namespace BTCPayServer.Controllers
         public async Task<IActionResult> ListInvoices(string searchTerm = null, int skip = 0, int count = 20)
         {
             var model = new InvoicesModel();
+            var filterString = new SearchString(searchTerm);
             foreach (var invoice in await _InvoiceRepository.GetInvoices(new InvoiceQuery()
             {
-                TextSearch = searchTerm,
+                TextSearch = filterString.TextSearch,
                 Count = count,
                 Skip = skip,
-                UserId = GetUserId()
+                UserId = GetUserId(),
+                Status = filterString.Filters.TryGet("status"),
+                StoreId = filterString.Filters.TryGet("storeid")
             }))
             {
                 model.SearchTerm = searchTerm;
@@ -252,9 +304,9 @@ namespace BTCPayServer.Controllers
         [BitpayAPIConstraint(false)]
         public async Task<IActionResult> CreateInvoice(CreateInvoiceModel model)
         {
+            model.Stores = await GetStores(GetUserId(), model.StoreId);
             if (!ModelState.IsValid)
             {
-                model.Stores = await GetStores(GetUserId(), model.StoreId);
                 return View(model);
             }
             var store = await _StoreRepository.FindStore(model.StoreId, GetUserId());
@@ -266,21 +318,30 @@ namespace BTCPayServer.Controllers
                     storeId = store.Id
                 });
             }
-            var result = await CreateInvoiceCore(new Invoice()
-            {
-                Price = model.Amount.Value,
-                Currency = "USD",
-                PosData = model.PosData,
-                OrderId = model.OrderId,
-                //RedirectURL = redirect + "redirect",
-                NotificationURL = model.NotificationUrl,
-                ItemDesc = model.ItemDesc,
-                FullNotifications = true,
-                BuyerEmail = model.BuyerEmail,
-            }, store, HttpContext.Request.GetAbsoluteRoot());
 
-            StatusMessage = $"Invoice {result.Data.Id} just created!";
-            return RedirectToAction(nameof(ListInvoices));
+            try
+            {
+                var result = await CreateInvoiceCore(new Invoice()
+                {
+                    Price = model.Amount.Value,
+                    Currency = model.Currency,
+                    PosData = model.PosData,
+                    OrderId = model.OrderId,
+                    //RedirectURL = redirect + "redirect",
+                    NotificationURL = model.NotificationUrl,
+                    ItemDesc = model.ItemDesc,
+                    FullNotifications = true,
+                    BuyerEmail = model.BuyerEmail,
+                }, store, HttpContext.Request.GetAbsoluteRoot());
+
+                StatusMessage = $"Invoice {result.Data.Id} just created!";
+                return RedirectToAction(nameof(ListInvoices));
+            }
+            catch (RateUnavailableException)
+            {
+                ModelState.TryAddModelError(nameof(model.Currency), "Unsupported currency");
+                return View(model);
+            }
         }
 
         private async Task<SelectList> GetStores(string userId, string storeId = null)
@@ -301,6 +362,16 @@ namespace BTCPayServer.Controllers
             });
         }
 
+        [HttpPost]
+        [Route("invoices/invalidatepaid")]
+        [Authorize(AuthenticationSchemes = "Identity.Application")]
+        [BitpayAPIConstraint(false)]
+        public async Task<IActionResult> InvalidatePaidInvoice(string invoiceId)
+        {
+            await _InvoiceRepository.UpdatePaidInvoiceToInvalid(invoiceId);
+            return RedirectToAction(nameof(ListInvoices));
+        }
+
         [TempData]
         public string StatusMessage
         {

BTCPayServer/Controllers/InvoiceController.cs

@@ -51,31 +51,36 @@ namespace BTCPayServer.Controllers
         Network _Network;
         UserManager<ApplicationUser> _UserManager;
         IFeeProvider _FeeProvider;
+        private CurrencyNameTable _CurrencyNameTable;
         ExplorerClient _Explorer;
-
+        EventAggregator _EventAggregator;
         public InvoiceController(
             Network network,
             InvoiceRepository invoiceRepository,
+            CurrencyNameTable currencyNameTable,
             UserManager<ApplicationUser> userManager,
             BTCPayWallet wallet,
             IRateProvider rateProvider,
             StoreRepository storeRepository,
-            InvoiceWatcher watcher,
+            EventAggregator eventAggregator,
+            InvoiceWatcherAccessor watcher,
             ExplorerClient explorerClient,
             IFeeProvider feeProvider)
         {
+            _CurrencyNameTable = currencyNameTable ?? throw new ArgumentNullException(nameof(currencyNameTable));
             _Explorer = explorerClient ?? throw new ArgumentNullException(nameof(explorerClient));
             _StoreRepository = storeRepository ?? throw new ArgumentNullException(nameof(storeRepository));
             _Network = network ?? throw new ArgumentNullException(nameof(network));
             _InvoiceRepository = invoiceRepository ?? throw new ArgumentNullException(nameof(invoiceRepository));
             _Wallet = wallet ?? throw new ArgumentNullException(nameof(wallet));
             _RateProvider = rateProvider ?? throw new ArgumentNullException(nameof(rateProvider));
-            _Watcher = watcher ?? throw new ArgumentNullException(nameof(watcher));
+            _Watcher = (watcher ?? throw new ArgumentNullException(nameof(watcher))).Instance;
             _UserManager = userManager;
             _FeeProvider = feeProvider ?? throw new ArgumentNullException(nameof(feeProvider));
+            _EventAggregator = eventAggregator;
         }
 
-        internal async Task<DataWrapper<InvoiceResponse>> CreateInvoiceCore(Invoice invoice, StoreData store, string serverUrl, double expiryMinutes = 15, double monitoringMinutes = 60)
+        internal async Task<DataWrapper<InvoiceResponse>> CreateInvoiceCore(Invoice invoice, StoreData store, string serverUrl, double expiryMinutes = 15)
         {
             //TODO: expiryMinutes (time before a new invoice can become paid) and monitoringMinutes (time before a paid invoice becomes invalid)  should be configurable at store level
             var derivationStrategy = store.DerivationStrategy;
@@ -84,12 +89,13 @@ namespace BTCPayServer.Controllers
                 InvoiceTime = DateTimeOffset.UtcNow,
                 DerivationStrategy = derivationStrategy ?? throw new BitpayHttpException(400, "This store has not configured the derivation strategy")
             };
+            var storeBlob = store.GetStoreBlob(_Network);
             Uri notificationUri = Uri.IsWellFormedUriString(invoice.NotificationURL, UriKind.Absolute) ? new Uri(invoice.NotificationURL, UriKind.Absolute) : null;
             if (notificationUri == null || (notificationUri.Scheme != "http" && notificationUri.Scheme != "https")) //TODO: Filer non routable addresses ?
                 notificationUri = null;
             EmailAddressAttribute emailValidator = new EmailAddressAttribute();
             entity.ExpirationTime = entity.InvoiceTime.AddMinutes(expiryMinutes);
-            entity.MonitoringExpiration = entity.InvoiceTime.AddMinutes(monitoringMinutes);
+            entity.MonitoringExpiration = entity.ExpirationTime + TimeSpan.FromMinutes(storeBlob.MonitoringExpiration);
             entity.OrderId = invoice.OrderId;
             entity.ServerUrl = serverUrl;
             entity.FullNotifications = invoice.FullNotifications;
@@ -107,13 +113,16 @@ namespace BTCPayServer.Controllers
             entity.RedirectURL = invoice.RedirectURL ?? store.StoreWebsite;
             entity.Status = "new";
             entity.SpeedPolicy = ParseSpeedPolicy(invoice.TransactionSpeed, store.SpeedPolicy);
-            entity.TxFee = store.GetStoreBlob(_Network).NetworkFeeDisabled ? Money.Zero : (await _FeeProvider.GetFeeRateAsync()).GetFee(100); // assume price for 100 bytes
-            entity.Rate = (double)await _RateProvider.GetRateAsync(invoice.Currency);
-            entity.PosData = invoice.PosData;
-            entity.DepositAddress = await _Wallet.ReserveAddressAsync(ParseDerivationStrategy(derivationStrategy));
 
+            var getFeeRate = _FeeProvider.GetFeeRateAsync();
+            var getRate = _RateProvider.GetRateAsync(invoice.Currency);
+            var getAddress = _Wallet.ReserveAddressAsync(ParseDerivationStrategy(derivationStrategy));
+            entity.TxFee = storeBlob.NetworkFeeDisabled ? Money.Zero : (await getFeeRate).GetFee(100); // assume price for 100 bytes
+            entity.Rate = (double)await getRate;
+            entity.PosData = invoice.PosData;
+            entity.DepositAddress = await getAddress;
             entity = await _InvoiceRepository.CreateInvoiceAsync(store.Id, entity);
-            await _Watcher.WatchAsync(entity.Id);
+            _Watcher.Watch(entity.Id);
             var resp = entity.EntityToDTO();
             return new DataWrapper<InvoiceResponse>(resp) { Facade = "pos/invoice" };
         }

BTCPayServer/Controllers/ServerController.cs

@@ -32,15 +32,50 @@ namespace BTCPayServer.Controllers
         public IActionResult ListUsers()
         {
             var users = new UsersViewModel();
+            users.StatusMessage = StatusMessage;
             users.Users
                 = _UserManager.Users.Select(u => new UsersViewModel.UserViewModel()
                 {
                     Name = u.UserName,
-                    Email = u.Email
+                    Email = u.Email,
+                    Id = u.Id
                 }).ToList();
             return View(users);
         }
 
+
+        [Route("server/users/{userId}/delete")]
+        public async Task<IActionResult> DeleteUser(string userId)
+        {
+            var user = userId == null ? null : await _UserManager.FindByIdAsync(userId);
+            if (user == null)
+                return NotFound();
+            return View("Confirm", new ConfirmModel()
+            {
+                Title = "Delete user " + user.Email,
+                Description = "This user will be permanently deleted",
+                Action = "Delete"
+            });
+        }
+
+        [Route("server/users/{userId}/delete")]
+        [HttpPost]
+        public async Task<IActionResult> DeleteUserPost(string userId)
+        {
+            var user = userId == null ? null : await _UserManager.FindByIdAsync(userId);
+            if (user == null)
+                return NotFound();
+            await _UserManager.DeleteAsync(user);
+            StatusMessage = "User deleted";
+            return RedirectToAction(nameof(ListUsers));
+        }
+
+        [TempData]
+        public string StatusMessage
+        {
+            get; set;
+        }
+
         [Route("server/emails")]
         public async Task<IActionResult> Emails()
         {

BTCPayServer/Controllers/StoresController.cs

@@ -11,6 +11,7 @@ using Microsoft.AspNetCore.Identity;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.Rendering;
 using NBitcoin;
+using NBitcoin.DataEncoders;
 using NBitpayClient;
 using NBXplorer.DerivationStrategy;
 using System;
@@ -92,7 +93,7 @@ namespace BTCPayServer.Controllers
             StoresViewModel result = new StoresViewModel();
             result.StatusMessage = StatusMessage;
             var stores = await _Repo.GetStoresByUserId(GetUserId());
-            var balances = stores.Select(async s => string.IsNullOrEmpty(s.DerivationStrategy) ? Money.Zero : await _Wallet.GetBalance(ParseDerivationStrategy(s.DerivationStrategy))).ToArray();
+            var balances = stores.Select(async s => string.IsNullOrEmpty(s.DerivationStrategy) ? Money.Zero : await _Wallet.GetBalance(ParseDerivationStrategy(s.DerivationStrategy, null))).ToArray();
 
             for (int i = 0; i < stores.Length; i++)
             {
@@ -144,13 +145,16 @@ namespace BTCPayServer.Controllers
             if (store == null)
                 return NotFound();
 
+            var storeBlob = store.GetStoreBlob(_Network);
             var vm = new StoreViewModel();
+            vm.Id = store.Id;
             vm.StoreName = store.StoreName;
             vm.StoreWebsite = store.StoreWebsite;
-            vm.NetworkFee = !store.GetStoreBlob(_Network).NetworkFeeDisabled;
+            vm.NetworkFee = !storeBlob.NetworkFeeDisabled;
             vm.SpeedPolicy = store.SpeedPolicy;
             vm.DerivationScheme = store.DerivationStrategy;
             vm.StatusMessage = StatusMessage;
+            vm.MonitoringExpiration = storeBlob.MonitoringExpiration;
             return View(vm);
         }
 
@@ -190,9 +194,13 @@ namespace BTCPayServer.Controllers
                     needUpdate = true;
                     try
                     {
-                        var strategy = ParseDerivationStrategy(model.DerivationScheme);
-                        await _Wallet.TrackAsync(strategy);
-                        await _CallbackController.RegisterCallbackUriAsync(strategy, Request);
+                        if (!string.IsNullOrEmpty(model.DerivationScheme))
+                        {
+                            var strategy = ParseDerivationStrategy(model.DerivationScheme, model.DerivationSchemeFormat);
+                            await _Wallet.TrackAsync(strategy);
+                            await _CallbackController.RegisterCallbackUriAsync(strategy);
+                            model.DerivationScheme = strategy.ToString();
+                        }
                         store.DerivationStrategy = model.DerivationScheme;
                     }
                     catch
@@ -202,11 +210,12 @@ namespace BTCPayServer.Controllers
                     }
                 }
 
-                if (store.GetStoreBlob(_Network).NetworkFeeDisabled != !model.NetworkFee)
+                var blob = store.GetStoreBlob(_Network);
+                blob.NetworkFeeDisabled = !model.NetworkFee;
+                blob.MonitoringExpiration = model.MonitoringExpiration;
+
+                if (store.SetStoreBlob(blob, _Network))
                 {
-                    var blob = store.GetStoreBlob(_Network);
-                    blob.NetworkFeeDisabled = !model.NetworkFee;
-                    store.SetStoreBlob(blob, _Network);
                     needUpdate = true;
                 }
 
@@ -223,21 +232,62 @@ namespace BTCPayServer.Controllers
             }
             else
             {
-                var facto = new DerivationStrategyFactory(_Network);
-                var scheme = facto.Parse(model.DerivationScheme);
-                var line = scheme.GetLineFor(DerivationFeature.Deposit);
-
-                for (int i = 0; i < 10; i++)
+                if (!string.IsNullOrEmpty(model.DerivationScheme))
                 {
-                    var address = line.Derive((uint)i);
-                    model.AddressSamples.Add((line.Path.Derive((uint)i).ToString(), address.ScriptPubKey.GetDestinationAddress(_Network).ToString()));
+                    try
+                    {
+                        var scheme = ParseDerivationStrategy(model.DerivationScheme, model.DerivationSchemeFormat);
+                        var line = scheme.GetLineFor(DerivationFeature.Deposit);
+
+                        for (int i = 0; i < 10; i++)
+                        {
+                            var address = line.Derive((uint)i);
+                            model.AddressSamples.Add((line.Path.Derive((uint)i).ToString(), address.ScriptPubKey.GetDestinationAddress(_Network).ToString()));
+                        }
+                    }
+                    catch
+                    {
+                        ModelState.AddModelError(nameof(model.DerivationScheme), "Invalid Derivation Scheme");
+                    }
                 }
                 return View(model);
             }
         }
 
-        private DerivationStrategyBase ParseDerivationStrategy(string derivationScheme)
+        private DerivationStrategyBase ParseDerivationStrategy(string derivationScheme, string format)
         {
+            if (format == "Electrum")
+            {
+                //Unsupported Electrum
+                //var p2wsh_p2sh = 0x295b43fU;
+                //var p2wsh = 0x2aa7ed3U;
+                Dictionary<uint, string[]> electrumMapping = new Dictionary<uint, string[]>();
+                //Source https://github.com/spesmilo/electrum/blob/9edffd17542de5773e7284a8c8a2673c766bb3c3/lib/bitcoin.py
+                var standard = 0x0488b21eU;
+                electrumMapping.Add(standard, new[] { "legacy" });
+                var p2wpkh_p2sh = 0x049d7cb2U;
+                electrumMapping.Add(p2wpkh_p2sh, new string[] { "p2sh" });
+                var p2wpkh = 0x4b24746U;
+                electrumMapping.Add(p2wpkh, new string[] { });
+
+                var data = Encoders.Base58Check.DecodeData(derivationScheme);
+                if (data.Length < 4)
+                    throw new FormatException("data.Length < 4");
+                var prefix = Utils.ToUInt32(data, false);
+                if (!electrumMapping.TryGetValue(prefix, out string[] labels))
+                    throw new FormatException("!electrumMapping.TryGetValue(prefix, out string[] labels)");
+                var standardPrefix = Utils.ToBytes(_Network == Network.Main ? 0x0488b21eU : 0x043587cf, false);
+
+                for (int i = 0; i < 4; i++)
+                    data[i] = standardPrefix[i];
+
+                derivationScheme = new BitcoinExtPubKey(Encoders.Base58Check.EncodeData(data), _Network).ToString();
+                foreach (var label in labels)
+                {
+                    derivationScheme = derivationScheme + $"-[{label}]";
+                }
+            }
+
             return new DerivationStrategyFactory(_Network).Parse(derivationScheme);
         }
 

BTCPayServer/CustomThreadPool.cs

@@ -0,0 +1,98 @@
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace BTCPayServer
+{
+    class CustomThreadPool : IDisposable
+    {
+        CancellationTokenSource _Cancel = new CancellationTokenSource();
+        TaskCompletionSource<bool> _Exited;
+        int _ExitedCount = 0;
+        Thread[] _Threads;
+        Exception _UnhandledException;
+        BlockingCollection<(Action, TaskCompletionSource<object>)> _Actions = new BlockingCollection<(Action, TaskCompletionSource<object>)>(new ConcurrentQueue<(Action, TaskCompletionSource<object>)>());
+
+        public CustomThreadPool(int threadCount, string threadName)
+        {
+            if (threadCount <= 0)
+                throw new ArgumentOutOfRangeException(nameof(threadCount));
+            _Exited = new TaskCompletionSource<bool>();
+            _Threads = Enumerable.Range(0, threadCount).Select(_ => new Thread(RunLoop) { Name = threadName }).ToArray();
+            foreach (var t in _Threads)
+                t.Start();
+        }
+
+        public void Do(Action act)
+        {
+            DoAsync(act).GetAwaiter().GetResult();
+        }
+
+        public T Do<T>(Func<T> act)
+        {
+            return DoAsync(act).GetAwaiter().GetResult();
+        }
+
+        public async Task<T> DoAsync<T>(Func<T> act)
+        {
+            TaskCompletionSource<object> done = new TaskCompletionSource<object>();
+            _Actions.Add((() =>
+            {
+                try
+                {
+                    done.TrySetResult(act());
+                }
+                catch (Exception ex) { done.TrySetException(ex); }
+            }
+            , done));
+            return (T)(await done.Task.ConfigureAwait(false));
+        }
+
+        public Task DoAsync(Action act)
+        {
+            return DoAsync<object>(() =>
+            {
+                act();
+                return null;
+            });
+        }
+
+        void RunLoop()
+        {
+            try
+            {
+                foreach (var act in _Actions.GetConsumingEnumerable(_Cancel.Token))
+                {
+                    act.Item1();
+                }
+            }
+            catch (OperationCanceledException) when (_Cancel.IsCancellationRequested) { }
+            catch (Exception ex)
+            {
+                _Cancel.Cancel();
+                _UnhandledException = ex;
+            }
+            if (Interlocked.Increment(ref _ExitedCount) == _Threads.Length)
+            {
+                foreach (var action in _Actions)
+                {
+                    try
+                    {
+                        action.Item2.TrySetCanceled();
+                    }
+                    catch { }
+                }
+                _Exited.TrySetResult(true);
+            }
+        }
+
+        public void Dispose()
+        {
+            _Cancel.Cancel();
+            _Exited.Task.GetAwaiter().GetResult();
+        }
+    }
+}

BTCPayServer/Data/InvoiceData.cs

@@ -71,5 +71,9 @@ namespace BTCPayServer.Data
             get;
             set;
         }
+        public List<AddressInvoiceData> AddressInvoices
+        {
+            get; set;
+        }
     }
 }

BTCPayServer/Data/PaymentData.cs

@@ -25,5 +25,9 @@ namespace BTCPayServer.Data
         {
             get; set;
         }
+        public bool Accounted
+        {
+            get; set;
+        }
     }
 }

BTCPayServer/Data/StoreData.cs

@@ -8,6 +8,8 @@ using System.ComponentModel.DataAnnotations.Schema;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using System.ComponentModel;
+using Newtonsoft.Json;
 
 namespace BTCPayServer.Data
 {
@@ -65,17 +67,33 @@ namespace BTCPayServer.Data
             return StoreBlob == null ? new StoreBlob() : new Serializer(network).ToObject<StoreBlob>(Encoding.UTF8.GetString(StoreBlob));
         }
 
-        public void SetStoreBlob(StoreBlob storeBlob, Network network)
+        public bool SetStoreBlob(StoreBlob storeBlob, Network network)
         {
-            StoreBlob = Encoding.UTF8.GetBytes(new Serializer(network).ToString(storeBlob));
+            var original = new Serializer(network).ToString(GetStoreBlob(network));
+            var newBlob = new Serializer(network).ToString(storeBlob);
+            if (original == newBlob)
+                return false;
+            StoreBlob = Encoding.UTF8.GetBytes(newBlob);
+            return true;
         }
     }
 
     public class StoreBlob
     {
+        public StoreBlob()
+        {
+            MonitoringExpiration = 60;
+        }
         public bool NetworkFeeDisabled
         {
             get; set;
         }
+        [DefaultValue(60)]
+        [JsonProperty(DefaultValueHandling = DefaultValueHandling.Populate)]
+        public int MonitoringExpiration
+        {
+            get;
+            set;
+        }
     }
 }

BTCPayServer/Eclair/AllChannelResponse.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace BTCPayServer.Eclair
+{
+    public class AllChannelResponse
+    {
+        public string ShortChannelId { get; set; }
+        public string NodeId1 { get; set; }
+        public string NodeId2 { get; set; }
+    }
+}

BTCPayServer/Eclair/ChannelResponse.cs

@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace BTCPayServer.Eclair
+{
+    public class ChannelResponse
+    {
+
+        public string NodeId { get; set; }
+        public string ChannelId { get; set; }
+        public string State { get; set; }
+    }
+    public static class ChannelStates
+    {
+        public const string WAIT_FOR_FUNDING_CONFIRMED = "WAIT_FOR_FUNDING_CONFIRMED";
+
+        public const string NORMAL = "NORMAL";
+    }
+}

BTCPayServer/Eclair/EclairRPCClient.cs

@@ -0,0 +1,230 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Net;
+using System.Text;
+using System.Threading.Tasks;
+using NBitcoin;
+using NBitcoin.JsonConverters;
+using NBitcoin.RPC;
+
+namespace BTCPayServer.Eclair
+{
+    public class EclairRPCClient
+    {
+        public EclairRPCClient(Uri address, Network network)
+        {
+            if (address == null)
+                throw new ArgumentNullException(nameof(address));
+            if (network == null)
+                throw new ArgumentNullException(nameof(network));
+            Address = address;
+            Network = network;
+        }
+
+        public Network Network { get; private set; }
+
+
+        public GetInfoResponse GetInfo()
+        {
+            return GetInfoAsync().GetAwaiter().GetResult();
+        }
+
+        public Task<GetInfoResponse> GetInfoAsync()
+        {
+            return SendCommandAsync<GetInfoResponse>(new RPCRequest("getinfo", new object[] { }));
+        }
+
+        public async Task<T> SendCommandAsync<T>(RPCRequest request, bool throwIfRPCError = true)
+        {
+            var response = await SendCommandAsync(request, throwIfRPCError);
+            return Serializer.ToObject<T>(response.ResultString, Network);
+        }
+
+        public async Task<RPCResponse> SendCommandAsync(RPCRequest request, bool throwIfRPCError = true)
+        {
+            RPCResponse response = null;
+            HttpWebRequest webRequest = response == null ? CreateWebRequest() : null;
+            if (response == null)
+            {
+                var writer = new StringWriter();
+                request.WriteJSON(writer);
+                writer.Flush();
+                var json = writer.ToString();
+                var bytes = Encoding.UTF8.GetBytes(json);
+#if !(PORTABLE || NETCORE)
+                webRequest.ContentLength = bytes.Length;
+#endif
+                var dataStream = await webRequest.GetRequestStreamAsync().ConfigureAwait(false);
+                await dataStream.WriteAsync(bytes, 0, bytes.Length).ConfigureAwait(false);
+                await dataStream.FlushAsync().ConfigureAwait(false);
+                dataStream.Dispose();
+            }
+            WebResponse webResponse = null;
+            WebResponse errorResponse = null;
+            try
+            {
+                webResponse = response == null ? await webRequest.GetResponseAsync().ConfigureAwait(false) : null;
+                response = response ?? RPCResponse.Load(await ToMemoryStreamAsync(webResponse.GetResponseStream()).ConfigureAwait(false));
+
+                if (throwIfRPCError)
+                    response.ThrowIfError();
+            }
+            catch (WebException ex)
+            {
+                if (ex.Response == null || ex.Response.ContentLength == 0 ||
+                    !ex.Response.ContentType.Equals("application/json", StringComparison.Ordinal))
+                    throw;
+                errorResponse = ex.Response;
+                response = RPCResponse.Load(await ToMemoryStreamAsync(errorResponse.GetResponseStream()).ConfigureAwait(false));
+                if (throwIfRPCError)
+                    response.ThrowIfError();
+            }
+            finally
+            {
+                if (errorResponse != null)
+                {
+                    errorResponse.Dispose();
+                    errorResponse = null;
+                }
+                if (webResponse != null)
+                {
+                    webResponse.Dispose();
+                    webResponse = null;
+                }
+            }
+            return response;
+        }
+
+        public AllChannelResponse[] AllChannels()
+        {
+            return AllChannelsAsync().GetAwaiter().GetResult();
+        }
+
+        public async Task<AllChannelResponse[]> AllChannelsAsync()
+        {
+            return await SendCommandAsync<AllChannelResponse[]>(new RPCRequest("allchannels", new object[] { })).ConfigureAwait(false);
+        }
+
+        public string[] Channels()
+        {
+            return ChannelsAsync().GetAwaiter().GetResult();
+        }
+
+        public async Task<string[]> ChannelsAsync()
+        {
+            return await SendCommandAsync<string[]>(new RPCRequest("channels", new object[] { })).ConfigureAwait(false);
+        }
+
+        public void Close(string channelId)
+        {
+            CloseAsync(channelId).GetAwaiter().GetResult();
+        }
+
+        public async Task CloseAsync(string channelId)
+        {
+            if (channelId == null)
+                throw new ArgumentNullException(nameof(channelId));
+            try
+            {
+                await SendCommandAsync(new RPCRequest("close", new object[] { channelId })).ConfigureAwait(false);
+            }
+            catch (RPCException ex) when (ex.Message == "closing already in progress")
+            {
+                
+            }
+        }
+
+        public ChannelResponse Channel(string channelId)
+        {
+            return ChannelAsync(channelId).GetAwaiter().GetResult();
+        }
+
+        public async Task<ChannelResponse> ChannelAsync(string channelId)
+        {
+            if (channelId == null)
+                throw new ArgumentNullException(nameof(channelId));
+            return await SendCommandAsync<ChannelResponse>(new RPCRequest("channel", new object[] { channelId })).ConfigureAwait(false);
+        }
+
+        public string[] AllNodes()
+        {
+            return AllNodesAsync().GetAwaiter().GetResult();
+        }
+
+        public async Task<string[]> AllNodesAsync()
+        {
+            return await SendCommandAsync<string[]>(new RPCRequest("allnodes", new object[] { })).ConfigureAwait(false);
+        }
+
+        public Uri Address { get; private set; }
+
+        private HttpWebRequest CreateWebRequest()
+        {
+            var webRequest = (HttpWebRequest)WebRequest.Create(Address.AbsoluteUri);
+            webRequest.ContentType = "application/json";
+            webRequest.Method = "POST";
+            return webRequest;
+        }
+
+
+        private async Task<Stream> ToMemoryStreamAsync(Stream stream)
+        {
+            MemoryStream ms = new MemoryStream();
+            await stream.CopyToAsync(ms).ConfigureAwait(false);
+            ms.Position = 0;
+            return ms;
+        }
+
+        public string Open(NodeInfo node, Money fundingSatoshi, LightMoney pushAmount = null)
+        {
+            return OpenAsync(node, fundingSatoshi, pushAmount).GetAwaiter().GetResult();
+        }
+
+        public string Connect(NodeInfo node)
+        {
+            return ConnectAsync(node).GetAwaiter().GetResult();
+        }
+
+        public async Task<string> ConnectAsync(NodeInfo node)
+        {
+            if (node == null)
+                throw new ArgumentNullException(nameof(node));
+            return (await SendCommandAsync(new RPCRequest("connect", new object[] { node.NodeId, node.Host, node.Port })).ConfigureAwait(false)).ResultString;
+        }
+
+        public string Receive(LightMoney amount, string description = null)
+        {
+            return ReceiveAsync(amount, description).GetAwaiter().GetResult();
+        }
+
+        public async Task<string> ReceiveAsync(LightMoney amount, string description = null)
+        {
+            if (amount == null)
+                throw new ArgumentNullException(nameof(amount));
+            List<object> args = new List<object>();
+            args.Add(amount.MilliSatoshi);
+            if(description != null)
+            {
+                args.Add(description);
+            }
+            return (await SendCommandAsync(new RPCRequest("receive", args.ToArray())).ConfigureAwait(false)).ResultString;
+        }
+
+        public async Task<string> OpenAsync(NodeInfo node, Money fundingSatoshi, LightMoney pushAmount = null)
+        {
+            if (fundingSatoshi == null)
+                throw new ArgumentNullException(nameof(fundingSatoshi));
+            if (node == null)
+                throw new ArgumentNullException(nameof(node));
+            pushAmount = pushAmount ?? LightMoney.Zero;
+
+            var result = await SendCommandAsync(new RPCRequest("open", new object[] { node.NodeId, node.Host, node.Port, fundingSatoshi.Satoshi, pushAmount.MilliSatoshi }));
+
+            return result.ResultString;
+        }
+
+
+    }
+}

BTCPayServer/Eclair/GetInfoResponse.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using NBitcoin;
+using Newtonsoft.Json;
+
+namespace BTCPayServer.Eclair
+{
+    public class GetInfoResponse
+    {
+        public string NodeId { get; set; }
+        public string Alias { get; set; }
+        public int Port { get; set; }
+        public uint256 ChainHash { get; set; }
+        public int BlockHeight { get; set; }
+    }
+}

BTCPayServer/Eclair/LightMoney.cs

@@ -0,0 +1,569 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace BTCPayServer.Eclair
+{
+    public enum LightMoneyUnit : ulong
+    {
+        BTC = 100000000000,
+        MilliBTC = 100000000,
+        Bit = 100000,
+        Satoshi = 1000,
+        MilliSatoshi = 1
+    }
+
+    public class LightMoney : IComparable, IComparable<LightMoney>, IEquatable<LightMoney>
+    {
+
+
+        // for decimal.TryParse. None of the NumberStyles' composed values is useful for bitcoin style
+        private const NumberStyles BitcoinStyle =
+                          NumberStyles.AllowLeadingWhite | NumberStyles.AllowTrailingWhite
+                        | NumberStyles.AllowLeadingSign | NumberStyles.AllowDecimalPoint;
+
+
+        /// <summary>
+        /// Parse a bitcoin amount (Culture Invariant)
+        /// </summary>
+        /// <param name="bitcoin"></param>
+        /// <param name="nRet"></param>
+        /// <returns></returns>
+        public static bool TryParse(string bitcoin, out LightMoney nRet)
+        {
+            nRet = null;
+
+            decimal value;
+            if (!decimal.TryParse(bitcoin, BitcoinStyle, CultureInfo.InvariantCulture, out value))
+            {
+                return false;
+            }
+
+            try
+            {
+                nRet = new LightMoney(value, LightMoneyUnit.BTC);
+                return true;
+            }
+            catch (OverflowException)
+            {
+                return false;
+            }
+        }
+
+        /// <summary>
+        /// Parse a bitcoin amount (Culture Invariant)
+        /// </summary>
+        /// <param name="bitcoin"></param>
+        /// <returns></returns>
+        public static LightMoney Parse(string bitcoin)
+        {
+            LightMoney result;
+            if (TryParse(bitcoin, out result))
+            {
+                return result;
+            }
+            throw new FormatException("Impossible to parse the string in a bitcoin amount");
+        }
+
+        long _MilliSatoshis;
+        public long MilliSatoshi
+        {
+            get
+            {
+                return _MilliSatoshis;
+            }
+            // used as a central point where long.MinValue checking can be enforced 
+            private set
+            {
+                CheckLongMinValue(value);
+                _MilliSatoshis = value;
+            }
+        }
+
+        /// <summary>
+        /// Get absolute value of the instance
+        /// </summary>
+        /// <returns></returns>
+        public LightMoney Abs()
+        {
+            var a = this;
+            if (a < LightMoney.Zero)
+                a = -a;
+            return a;
+        }
+
+        public LightMoney(int satoshis)
+        {
+            MilliSatoshi = satoshis;
+        }
+
+        public LightMoney(uint satoshis)
+        {
+            MilliSatoshi = satoshis;
+        }
+
+        public LightMoney(long satoshis)
+        {
+            MilliSatoshi = satoshis;
+        }
+
+        public LightMoney(ulong satoshis)
+        {
+            // overflow check. 
+            // ulong.MaxValue is greater than long.MaxValue
+            checked
+            {
+                MilliSatoshi = (long)satoshis;
+            }
+        }
+
+        public LightMoney(decimal amount, LightMoneyUnit unit)
+        {
+            // sanity check. Only valid units are allowed
+            CheckMoneyUnit(unit, "unit");
+            checked
+            {
+                var satoshi = amount * (long)unit;
+                MilliSatoshi = (long)satoshi;
+            }
+        }
+
+
+        /// <summary>
+        /// Split the Money in parts without loss
+        /// </summary>
+        /// <param name="parts">The number of parts (must be more than 0)</param>
+        /// <returns>The splitted money</returns>
+        public IEnumerable<LightMoney> Split(int parts)
+        {
+            if (parts <= 0)
+                throw new ArgumentOutOfRangeException("Parts should be more than 0", "parts");
+            long remain;
+            long result = DivRem(_MilliSatoshis, parts, out remain);
+
+            for (int i = 0; i < parts; i++)
+            {
+                yield return LightMoney.Satoshis(result + (remain > 0 ? 1 : 0));
+                remain--;
+            }
+        }
+
+        private static long DivRem(long a, long b, out long result)
+        {
+            result = a % b;
+            return a / b;
+        }
+
+        public static LightMoney FromUnit(decimal amount, LightMoneyUnit unit)
+        {
+            return new LightMoney(amount, unit);
+        }
+
+        /// <summary>
+        /// Convert Money to decimal (same as ToDecimal)
+        /// </summary>
+        /// <param name="unit"></param>
+        /// <returns></returns>
+        public decimal ToUnit(LightMoneyUnit unit)
+        {
+            CheckMoneyUnit(unit, "unit");
+            // overflow safe because (long / int) always fit in decimal 
+            // decimal operations are checked by default
+            return (decimal)MilliSatoshi / (int)unit;
+        }
+        /// <summary>
+        /// Convert Money to decimal (same as ToUnit)
+        /// </summary>
+        /// <param name="unit"></param>
+        /// <returns></returns>
+        public decimal ToDecimal(LightMoneyUnit unit)
+        {
+            return ToUnit(unit);
+        }
+
+        public static LightMoney Coins(decimal coins)
+        {
+            // overflow safe.
+            // decimal operations are checked by default
+            return new LightMoney(coins * (ulong)LightMoneyUnit.BTC, LightMoneyUnit.MilliBTC);
+        }
+
+        public static LightMoney Bits(decimal bits)
+        {
+            // overflow safe.
+            // decimal operations are checked by default
+            return new LightMoney(bits * (ulong)LightMoneyUnit.Bit, LightMoneyUnit.MilliBTC);
+        }
+
+        public static LightMoney Cents(decimal cents)
+        {
+            // overflow safe.
+            // decimal operations are checked by default
+            return new LightMoney(cents * (ulong)LightMoneyUnit.Bit, LightMoneyUnit.MilliBTC);
+        }
+
+        public static LightMoney Satoshis(decimal sats)
+        {
+            return new LightMoney(sats * (ulong)LightMoneyUnit.Satoshi, LightMoneyUnit.MilliBTC);
+        }
+
+        public static LightMoney Satoshis(ulong sats)
+        {
+            return new LightMoney(sats);
+        }
+
+        public static LightMoney Satoshis(long sats)
+        {
+            return new LightMoney(sats);
+        }
+
+        public static LightMoney MilliSatoshis(long msats)
+        {
+            return new LightMoney(msats);
+        }
+
+        public static LightMoney MilliSatoshis(ulong msats)
+        {
+            return new LightMoney(msats);
+        }
+
+        #region IEquatable<Money> Members
+
+        public bool Equals(LightMoney other)
+        {
+            if (other == null)
+                return false;
+            return _MilliSatoshis.Equals(other._MilliSatoshis);
+        }
+
+        public int CompareTo(LightMoney other)
+        {
+            if (other == null)
+                return 1;
+            return _MilliSatoshis.CompareTo(other._MilliSatoshis);
+        }
+
+        #endregion
+
+        #region IComparable Members
+
+        public int CompareTo(object obj)
+        {
+            if (obj == null)
+                return 1;
+            LightMoney m = obj as LightMoney;
+            if (m != null)
+                return _MilliSatoshis.CompareTo(m._MilliSatoshis);
+#if !(PORTABLE || NETCORE)
+            return _MilliSatoshis.CompareTo(obj);
+#else
+			return _Satoshis.CompareTo((long)obj);
+#endif
+        }
+
+        #endregion
+
+        public static LightMoney operator -(LightMoney left, LightMoney right)
+        {
+            if (left == null)
+                throw new ArgumentNullException("left");
+            if (right == null)
+                throw new ArgumentNullException("right");
+            return new LightMoney(checked(left._MilliSatoshis - right._MilliSatoshis));
+        }
+        public static LightMoney operator -(LightMoney left)
+        {
+            if (left == null)
+                throw new ArgumentNullException("left");
+            return new LightMoney(checked(-left._MilliSatoshis));
+        }
+        public static LightMoney operator +(LightMoney left, LightMoney right)
+        {
+            if (left == null)
+                throw new ArgumentNullException("left");
+            if (right == null)
+                throw new ArgumentNullException("right");
+            return new LightMoney(checked(left._MilliSatoshis + right._MilliSatoshis));
+        }
+        public static LightMoney operator *(int left, LightMoney right)
+        {
+            if (right == null)
+                throw new ArgumentNullException("right");
+            return LightMoney.Satoshis(checked(left * right._MilliSatoshis));
+        }
+
+        public static LightMoney operator *(LightMoney right, int left)
+        {
+            if (right == null)
+                throw new ArgumentNullException("right");
+            return LightMoney.Satoshis(checked(right._MilliSatoshis * left));
+        }
+        public static LightMoney operator *(long left, LightMoney right)
+        {
+            if (right == null)
+                throw new ArgumentNullException("right");
+            return LightMoney.Satoshis(checked(left * right._MilliSatoshis));
+        }
+        public static LightMoney operator *(LightMoney right, long left)
+        {
+            if (right == null)
+                throw new ArgumentNullException("right");
+            return LightMoney.Satoshis(checked(left * right._MilliSatoshis));
+        }
+
+        public static LightMoney operator /(LightMoney left, long right)
+        {
+            if (left == null)
+                throw new ArgumentNullException("left");
+            return new LightMoney(checked(left._MilliSatoshis / right));
+        }
+
+        public static bool operator <(LightMoney left, LightMoney right)
+        {
+            if (left == null)
+                throw new ArgumentNullException("left");
+            if (right == null)
+                throw new ArgumentNullException("right");
+            return left._MilliSatoshis < right._MilliSatoshis;
+        }
+        public static bool operator >(LightMoney left, LightMoney right)
+        {
+            if (left == null)
+                throw new ArgumentNullException("left");
+            if (right == null)
+                throw new ArgumentNullException("right");
+            return left._MilliSatoshis > right._MilliSatoshis;
+        }
+        public static bool operator <=(LightMoney left, LightMoney right)
+        {
+            if (left == null)
+                throw new ArgumentNullException("left");
+            if (right == null)
+                throw new ArgumentNullException("right");
+            return left._MilliSatoshis <= right._MilliSatoshis;
+        }
+        public static bool operator >=(LightMoney left, LightMoney right)
+        {
+            if (left == null)
+                throw new ArgumentNullException("left");
+            if (right == null)
+                throw new ArgumentNullException("right");
+            return left._MilliSatoshis >= right._MilliSatoshis;
+        }
+
+        public static implicit operator LightMoney(long value)
+        {
+            return new LightMoney(value);
+        }
+        public static implicit operator LightMoney(int value)
+        {
+            return new LightMoney(value);
+        }
+
+        public static implicit operator LightMoney(uint value)
+        {
+            return new LightMoney(value);
+        }
+
+        public static implicit operator LightMoney(ulong value)
+        {
+            return new LightMoney(checked((long)value));
+        }
+
+        public static implicit operator long(LightMoney value)
+        {
+            return value.MilliSatoshi;
+        }
+
+        public static implicit operator ulong(LightMoney value)
+        {
+            return checked((ulong)value.MilliSatoshi);
+        }
+
+        public static implicit operator LightMoney(string value)
+        {
+            return LightMoney.Parse(value);
+        }
+
+        public override bool Equals(object obj)
+        {
+            LightMoney item = obj as LightMoney;
+            if (item == null)
+                return false;
+            return _MilliSatoshis.Equals(item._MilliSatoshis);
+        }
+        public static bool operator ==(LightMoney a, LightMoney b)
+        {
+            if (Object.ReferenceEquals(a, b))
+                return true;
+            if (((object)a == null) || ((object)b == null))
+                return false;
+            return a._MilliSatoshis == b._MilliSatoshis;
+        }
+
+        public static bool operator !=(LightMoney a, LightMoney b)
+        {
+            return !(a == b);
+        }
+
+        public override int GetHashCode()
+        {
+            return _MilliSatoshis.GetHashCode();
+        }
+
+
+        /// <summary>
+        /// Returns a culture invariant string representation of Bitcoin amount
+        /// </summary>
+        /// <returns></returns>
+        public override string ToString()
+        {
+            return ToString(false, false);
+        }
+
+        /// <summary>
+        /// Returns a culture invariant string representation of Bitcoin amount
+        /// </summary>
+        /// <param name="fplus">True if show + for a positive amount</param>
+        /// <param name="trimExcessZero">True if trim excess zeroes</param>
+        /// <returns></returns>
+        public string ToString(bool fplus, bool trimExcessZero = true)
+        {
+            var fmt = string.Format("{{0:{0}{1}B}}",
+                                    (fplus ? "+" : null),
+                                    (trimExcessZero ? "2" : "11"));
+            return string.Format(BitcoinFormatter.Formatter, fmt, _MilliSatoshis);
+        }
+
+
+        static LightMoney _Zero = new LightMoney(0);
+        public static LightMoney Zero
+        {
+            get
+            {
+                return _Zero;
+            }
+        }
+
+        internal class BitcoinFormatter : IFormatProvider, ICustomFormatter
+        {
+            public static readonly BitcoinFormatter Formatter = new BitcoinFormatter();
+
+            public object GetFormat(Type formatType)
+            {
+                return formatType == typeof(ICustomFormatter) ? this : null;
+            }
+
+            public string Format(string format, object arg, IFormatProvider formatProvider)
+            {
+                if (!this.Equals(formatProvider))
+                {
+                    return null;
+                }
+                var i = 0;
+                var plus = format[i] == '+';
+                if (plus)
+                    i++;
+                int decPos = 0;
+                if (int.TryParse(format.Substring(i, 1), out decPos))
+                {
+                    i++;
+                }
+                var unit = format[i];
+                var unitToUseInCalc = LightMoneyUnit.BTC;
+                switch (unit)
+                {
+                    case 'B':
+                        unitToUseInCalc = LightMoneyUnit.BTC;
+                        break;
+                }
+                var val = Convert.ToDecimal(arg) / (long)unitToUseInCalc;
+                var zeros = new string('0', decPos);
+                var rest = new string('#', 11 - decPos);
+                var fmt = plus && val > 0 ? "+" : string.Empty;
+
+                fmt += "{0:0" + (decPos > 0 ? "." + zeros + rest : string.Empty) + "}";
+                return string.Format(CultureInfo.InvariantCulture, fmt, val);
+            }
+        }
+
+        /// <summary>
+        /// Tell if amount is almost equal to this instance
+        /// </summary>
+        /// <param name="amount"></param>
+        /// <param name="dust">more or less amount</param>
+        /// <returns>true if equals, else false</returns>
+        public bool Almost(LightMoney amount, LightMoney dust)
+        {
+            if (amount == null)
+                throw new ArgumentNullException("amount");
+            if (dust == null)
+                throw new ArgumentNullException("dust");
+            return (amount - this).Abs() <= dust;
+        }
+
+        /// <summary>
+        /// Tell if amount is almost equal to this instance
+        /// </summary>
+        /// <param name="amount"></param>
+        /// <param name="margin">error margin (between 0 and 1)</param>
+        /// <returns>true if equals, else false</returns>
+        public bool Almost(LightMoney amount, decimal margin)
+        {
+            if (amount == null)
+                throw new ArgumentNullException("amount");
+            if (margin < 0.0m || margin > 1.0m)
+                throw new ArgumentOutOfRangeException("margin", "margin should be between 0 and 1");
+            var dust = LightMoney.Satoshis((decimal)this.MilliSatoshi * margin);
+            return Almost(amount, dust);
+        }
+
+        public static LightMoney Min(LightMoney a, LightMoney b)
+        {
+            if (a == null)
+                throw new ArgumentNullException("a");
+            if (b == null)
+                throw new ArgumentNullException("b");
+            if (a <= b)
+                return a;
+            return b;
+        }
+
+        public static LightMoney Max(LightMoney a, LightMoney b)
+        {
+            if (a == null)
+                throw new ArgumentNullException("a");
+            if (b == null)
+                throw new ArgumentNullException("b");
+            if (a >= b)
+                return a;
+            return b;
+        }
+
+        private static void CheckLongMinValue(long value)
+        {
+            if (value == long.MinValue)
+                throw new OverflowException("satoshis amount should be greater than long.MinValue");
+        }
+
+        private static void CheckMoneyUnit(LightMoneyUnit value, string paramName)
+        {
+            var typeOfMoneyUnit = typeof(LightMoneyUnit);
+            if (!Enum.IsDefined(typeOfMoneyUnit, value))
+            {
+                throw new ArgumentException("Invalid value for MoneyUnit", paramName);
+            }
+        }
+
+        #region IComparable Members
+
+        int IComparable.CompareTo(object obj)
+        {
+            return this.CompareTo(obj);
+        }
+
+        #endregion
+    }
+}

BTCPayServer/Eclair/NodeInfo.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace BTCPayServer.Eclair
+{
+    public class NodeInfo
+    {
+        public NodeInfo(string nodeId, string host, int port)
+        {
+            if (host == null)
+                throw new ArgumentNullException(nameof(host));
+            if (nodeId == null)
+                throw new ArgumentNullException(nameof(nodeId));
+            Port = port;
+            Host = host;
+            NodeId = nodeId;
+        }
+        public string NodeId { get; private set; }
+        public string Host { get; private set; }
+        public int Port { get; private set; }
+    }
+}

BTCPayServer/EventAggregator.cs

@@ -0,0 +1,130 @@
+using System;
+using Microsoft.Extensions.Logging;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using BTCPayServer.Logging;
+
+namespace BTCPayServer
+{
+    public interface IEventAggregatorSubscription : IDisposable
+    {
+        void Unsubscribe();
+        void Resubscribe();
+    }
+    public class EventAggregator : IDisposable
+    {
+        class Subscription : IEventAggregatorSubscription
+        {
+            private EventAggregator aggregator;
+            Type t;
+            Action<object> act;
+            public Subscription(EventAggregator aggregator, Type t)
+            {
+                this.aggregator = aggregator;
+                this.t = t;
+            }
+
+            public Action<Object> Act { get; set; }
+
+            public void Dispose()
+            {
+                lock (this.aggregator._Subscriptions)
+                {
+                    if (this.aggregator._Subscriptions.TryGetValue(t, out Dictionary<Subscription, Action<object>> actions))
+                    {
+                        if (actions.Remove(this))
+                        {
+                            if (actions.Count == 0)
+                                this.aggregator._Subscriptions.Remove(t);
+                        }
+                    }
+                }
+            }
+
+            public void Resubscribe()
+            {
+                aggregator.Subscribe(t, this);
+            }
+
+            public void Unsubscribe()
+            {
+                Dispose();
+            }
+        }
+
+        public void Publish<T>(T evt) where T : class
+        {
+            if (evt == null)
+                throw new ArgumentNullException(nameof(evt));
+            List<Action<object>> actionList = new List<Action<object>>();
+            lock (_Subscriptions)
+            {
+                if (_Subscriptions.TryGetValue(typeof(T), out Dictionary<Subscription, Action<object>> actions))
+                {
+                    actionList = actions.Values.ToList();
+                }
+            }
+
+            Logs.Events.LogInformation($"New event: {evt.ToString()}");
+            foreach (var sub in actionList)
+            {
+                try
+                {
+                    sub(evt);
+                }
+                catch (Exception ex)
+                {
+                    Logs.Events.LogError(ex, $"Error while calling event handler");
+                }
+            }
+        }
+
+        public IEventAggregatorSubscription Subscribe<T>(Action<IEventAggregatorSubscription, T> subscription)
+        {
+            var eventType = typeof(T);
+            var s = new Subscription(this, eventType);
+            s.Act = (o) => subscription(s, (T)o);
+            return Subscribe(eventType, s);
+        }
+
+        private IEventAggregatorSubscription Subscribe(Type eventType, Subscription subscription)
+        {
+            lock (_Subscriptions)
+            {
+                if (!_Subscriptions.TryGetValue(eventType, out Dictionary<Subscription, Action<object>> actions))
+                {
+                    actions = new Dictionary<Subscription, Action<object>>();
+                    _Subscriptions.Add(eventType, actions);
+                }
+                actions.Add(subscription, subscription.Act);
+            }
+            return subscription;
+        }
+
+        Dictionary<Type, Dictionary<Subscription, Action<object>>> _Subscriptions = new Dictionary<Type, Dictionary<Subscription, Action<object>>>();
+
+        public IEventAggregatorSubscription Subscribe<T, TReturn>(Func<T, TReturn> subscription)
+        {
+            return Subscribe(new Action<T>((t) => subscription(t)));
+        }
+
+        public IEventAggregatorSubscription Subscribe<T, TReturn>(Func<IEventAggregatorSubscription, T, TReturn> subscription)
+        {
+            return Subscribe(new Action<IEventAggregatorSubscription, T>((sub, t) => subscription(sub, t)));
+        }
+
+        public IEventAggregatorSubscription Subscribe<T>(Action<T> subscription)
+        {
+            return Subscribe(new Action<IEventAggregatorSubscription, T>((sub, t) => subscription(t)));
+        }
+
+        public void Dispose()
+        {
+            lock (_Subscriptions)
+            {
+                _Subscriptions.Clear();
+            }
+        }
+    }
+}

BTCPayServer/Events/InvoiceDataChangedEvent.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace BTCPayServer.Events
+{
+    public class InvoiceDataChangedEvent
+    {
+        public string InvoiceId { get; set; }
+
+        public override string ToString()
+        {
+            return $"Invoice {InvoiceId} data changed";
+        }
+    }
+}

BTCPayServer/Events/InvoicePaymentEvent.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using BTCPayServer.Services.Invoices;
+
+namespace BTCPayServer.Events
+{
+    public class InvoicePaymentEvent
+    {
+        
+        public InvoicePaymentEvent(string invoiceId)
+        {
+            InvoiceId = invoiceId;
+        }
+
+        public string InvoiceId { get; set; }
+
+        public override string ToString()
+        {
+            return $"Invoice {InvoiceId} received a payment";
+        }
+    }
+}

BTCPayServer/Events/InvoiceStatusChangedEvent.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using BTCPayServer.Services.Invoices;
+
+namespace BTCPayServer.Events
+{
+    public class InvoiceStatusChangedEvent
+    {
+        public InvoiceStatusChangedEvent()
+        {
+
+        }
+        public InvoiceStatusChangedEvent(InvoiceEntity invoice, string newState)
+        {
+            OldState = invoice.Status;
+            InvoiceId = invoice.Id;
+            NewState = newState;
+        }
+        public string InvoiceId { get; set; }
+        public string OldState { get; set; }
+        public string NewState { get; set; }
+
+        public override string ToString()
+        {
+            return $"Invoice {InvoiceId} changed status: {OldState} => {NewState}";
+        }
+    }
+}

BTCPayServer/Events/NBXplorerStateChangedEvent.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace BTCPayServer.Events
+{
+    public class NBXplorerStateChangedEvent
+    {
+        public NBXplorerStateChangedEvent(NBXplorerState old, NBXplorerState newState)
+        {
+            NewState = newState;
+            OldState = old;
+        }
+
+        public NBXplorerState NewState { get; set; }
+        public NBXplorerState OldState { get; set; }
+
+        public override string ToString()
+        {
+            return $"NBXplorer: {OldState} => {NewState}";
+        }
+    }
+}

BTCPayServer/Events/NewBlockEvent.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace BTCPayServer.Events
+{
+    public class NewBlockEvent
+    {
+        public override string ToString()
+        {
+            return "New block";
+        }
+    }
+}

BTCPayServer/Events/TxOutReceivedEvent.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using NBitcoin;
+
+namespace BTCPayServer.Events
+{
+    public class TxOutReceivedEvent
+    {
+        public Script ScriptPubKey { get; set; }
+        public BitcoinAddress Address { get; set; }
+
+        public override string ToString()
+        {
+            String address = Address?.ToString() ?? ScriptPubKey.ToHex();
+            return $"{address} received a transaction";
+        }
+    }
+}

BTCPayServer/Extensions.cs

@@ -11,11 +11,26 @@ using System;
 using System.Collections.Generic;
 using System.Text;
 using System.Text.Encodings.Web;
+using NBitcoin;
+using System.Threading.Tasks;
+using NBXplorer;
+using NBXplorer.Models;
+using System.Linq;
+using System.Threading;
 
 namespace BTCPayServer
 {
     public static class Extensions
     {
+        public static async Task<Dictionary<uint256, TransactionResult>> GetTransactions(this ExplorerClient client, uint256[] hashes, CancellationToken cts = default(CancellationToken))
+        {
+            hashes = hashes.Distinct().ToArray();
+            var transactions = hashes
+                                        .Select(async o => await client.GetTransactionAsync(o, cts))
+                                        .ToArray();
+            await Task.WhenAll(transactions).ConfigureAwait(false);
+            return transactions.Select(t => t.Result).Where(t => t != null).ToDictionary(o => o.Transaction.GetHash());
+        }
         public static string WithTrailingSlash(this string str)
         {
             if (str.EndsWith("/"))
@@ -56,10 +71,10 @@ namespace BTCPayServer
             return res;
         }
 
-        public static HtmlString ToSrvModel(this object o)
+        public static HtmlString ToJSVariableModel(this object o, string variableName)
         {
             var encodedJson = JavaScriptEncoder.Default.Encode(o.ToJson());
-            return new HtmlString("var srvModel = JSON.parse('" + encodedJson + "');");
+            return new HtmlString($"var {variableName} = JSON.parse('" + encodedJson + "');");
         }
 
 

BTCPayServer/Hosting/BTCPayServerServices.cs

@@ -1,4 +1,5 @@
 using BTCPayServer.Configuration;
+using Microsoft.Extensions.Logging;
 using Microsoft.AspNetCore.Hosting;
 using System;
 using System.Collections.Generic;
@@ -34,6 +35,7 @@ using System.Threading;
 using BTCPayServer.Services.Wallets;
 using BTCPayServer.Authentication;
 using Microsoft.Extensions.Caching.Memory;
+using BTCPayServer.Logging;
 
 namespace BTCPayServer.Hosting
 {
@@ -83,19 +85,6 @@ namespace BTCPayServer.Hosting
                 }
             }
         }
-        class BTCPayServerConfigureOptions : IConfigureOptions<MvcOptions>
-        {
-            BTCPayServerOptions _Options;
-            public BTCPayServerConfigureOptions(BTCPayServerOptions options)
-            {
-                _Options = options;
-            }
-            public void Configure(MvcOptions options)
-            {
-                if (_Options.RequireHttps)
-                    options.Filters.Add(new RequireHttpsAttribute());
-            }
-        }
         public static IServiceCollection AddBTCPayServer(this IServiceCollection services)
         {
             services.AddDbContext<ApplicationDbContext>((provider, o) =>
@@ -106,18 +95,36 @@ namespace BTCPayServer.Hosting
             services.TryAddSingleton<SettingsRepository>();
             services.TryAddSingleton<InvoicePaymentNotification>();
             services.TryAddSingleton<BTCPayServerOptions>(o => o.GetRequiredService<IOptions<BTCPayServerOptions>>().Value);
-            services.TryAddSingleton<IConfigureOptions<MvcOptions>, BTCPayServerConfigureOptions>();
-            services.TryAddSingleton(o =>
+            services.TryAddSingleton<InvoiceRepository>(o =>
             {
-                var runtime = new BTCPayServerRuntime();
-                runtime.Configure(o.GetRequiredService<BTCPayServerOptions>());
-                return runtime;
+                var opts = o.GetRequiredService<BTCPayServerOptions>();
+                var dbContext = o.GetRequiredService<ApplicationDbContextFactory>();
+                var dbpath = Path.Combine(opts.DataDir, "InvoiceDB");
+                if (!Directory.Exists(dbpath))
+                    Directory.CreateDirectory(dbpath);
+                return new InvoiceRepository(dbContext, dbpath, opts.Network);
             });
             services.AddSingleton<BTCPayServerEnvironment>();
             services.TryAddSingleton<TokenRepository>();
-            services.TryAddSingleton(o => o.GetRequiredService<BTCPayServerRuntime>().InvoiceRepository);
+            services.TryAddSingleton<EventAggregator>();
             services.TryAddSingleton<Network>(o => o.GetRequiredService<BTCPayServerOptions>().Network);
-            services.TryAddSingleton<ApplicationDbContextFactory>(o => o.GetRequiredService<BTCPayServerRuntime>().DBFactory);
+            services.TryAddSingleton<ApplicationDbContextFactory>(o => 
+            {
+                var opts = o.GetRequiredService<BTCPayServerOptions>();
+                ApplicationDbContextFactory dbContext = null;
+                if (opts.PostgresConnectionString == null)
+                {
+                    var connStr = "Data Source=" + Path.Combine(opts.DataDir, "sqllite.db");
+                    Logs.Configuration.LogInformation($"SQLite DB used ({connStr})");
+                    dbContext = new ApplicationDbContextFactory(DatabaseType.Sqlite, connStr);
+                }
+                else
+                {
+                    Logs.Configuration.LogInformation($"Postgres DB used ({opts.PostgresConnectionString})");
+                    dbContext = new ApplicationDbContextFactory(DatabaseType.Postgres, opts.PostgresConnectionString);
+                }
+                return dbContext;
+            });
             services.TryAddSingleton<StoreRepository>();
             services.TryAddSingleton<BTCPayWallet>();
             services.TryAddSingleton<CurrencyNameTable>();
@@ -127,10 +134,16 @@ namespace BTCPayServer.Hosting
                 BlockTarget = 20,
                 ExplorerClient = o.GetRequiredService<ExplorerClient>()
             });
+
+            services.TryAddSingleton<NBXplorerWaiterAccessor>();
+            services.AddSingleton<IHostedService, NBXplorerWaiter>();
             services.TryAddSingleton<ExplorerClient>(o =>
             {
-                var runtime = o.GetRequiredService<BTCPayServerRuntime>();
-                return runtime.Explorer;
+                var opts = o.GetRequiredService<BTCPayServerOptions>();
+                var explorer = new ExplorerClient(opts.Network, opts.Explorer);
+                if (!explorer.SetCookieAuth(opts.CookieFile))
+                    explorer.SetNoAuth();
+                return explorer;
             });
             services.TryAddSingleton<Bitpay>(o =>
             {
@@ -141,11 +154,16 @@ namespace BTCPayServer.Hosting
             });
             services.TryAddSingleton<IRateProvider>(o =>
             {
-                return new CachedRateProvider(new CoinAverageRateProvider(), o.GetRequiredService<IMemoryCache>()) { CacheSpan = TimeSpan.FromMinutes(1.0) };
+                var coinaverage = new CoinAverageRateProvider();
+                var bitpay = new BitpayRateProvider(new Bitpay(new Key(), new Uri("https://bitpay.com/")));
+                return new CachedRateProvider(new FallbackRateProvider(new IRateProvider[] { coinaverage, bitpay }), o.GetRequiredService<IMemoryCache>()) { CacheSpan = TimeSpan.FromMinutes(1.0) };
             });
-            services.TryAddSingleton<InvoiceWatcher>();
-            services.TryAddSingleton<InvoiceNotificationManager>();
-            services.TryAddSingleton<IHostedService>(o => o.GetRequiredService<InvoiceWatcher>());
+            
+            services.AddSingleton<IHostedService, InvoiceNotificationManager>();
+
+            services.TryAddSingleton<InvoiceWatcherAccessor>();
+            services.AddSingleton<IHostedService, InvoiceWatcher>();
+            services.TryAddSingleton<Initializer>();
             services.TryAddScoped<IHttpContextAccessor, HttpContextAccessor>();
             services.TryAddSingleton<IAuthorizationHandler, OwnStoreHandler>();
             services.AddTransient<AccessTokenController>();
@@ -172,12 +190,6 @@ namespace BTCPayServer.Hosting
 
         public static IApplicationBuilder UsePayServer(this IApplicationBuilder app)
         {
-            if (app.ApplicationServices.GetRequiredService<BTCPayServerOptions>().RequireHttps)
-            {
-                var options = new RewriteOptions().AddRedirectToHttps();
-                app.UseRewriter(options);
-            }
-
             using (var scope = app.ApplicationServices.GetService<IServiceScopeFactory>().CreateScope())
             {
                 //Wait the DB is ready
@@ -186,6 +198,11 @@ namespace BTCPayServer.Hosting
                     scope.ServiceProvider.GetRequiredService<ApplicationDbContext>().Database.Migrate();
                 });
             }
+
+
+
+            var initialize = app.ApplicationServices.GetService<Initializer>();
+            initialize.Init();
             app.UseMiddleware<BTCPayMiddleware>();
             return app;
         }

BTCPayServer/Hosting/BTCpayMiddleware.cs

@@ -29,27 +29,21 @@ namespace BTCPayServer.Hosting
     {
         TokenRepository _TokenRepository;
         RequestDelegate _Next;
-        CallbackController _CallbackController;
+        BTCPayServerOptions _Options;
+
         public BTCPayMiddleware(RequestDelegate next,
             TokenRepository tokenRepo,
-            CallbackController callbackController)
+            BTCPayServerOptions options)
         {
             _TokenRepository = tokenRepo ?? throw new ArgumentNullException(nameof(tokenRepo));
             _Next = next ?? throw new ArgumentNullException(nameof(next));
-            _CallbackController = callbackController;
+            _Options = options ?? throw new ArgumentNullException(nameof(options));
         }
 
 
-        bool _Registered;
         public async Task Invoke(HttpContext httpContext)
         {
-            if (!_Registered)
-            {
-                var callback = await _CallbackController.RegisterCallbackBlockUriAsync(httpContext.Request);
-                Logs.PayServer.LogInformation($"Registering block callback to " + callback);
-                _Registered = true;
-            }
-
+            RewriteHostIfNeeded(httpContext);
             httpContext.Request.Headers.TryGetValue("x-signature", out StringValues values);
             var sig = values.FirstOrDefault();
             httpContext.Request.Headers.TryGetValue("x-identity", out values);
@@ -103,6 +97,53 @@ namespace BTCPayServer.Hosting
             }
         }
 
+        private void RewriteHostIfNeeded(HttpContext httpContext)
+        {
+            // Make sure that code executing after this point think that the external url has been hit.
+            if (_Options.ExternalUrl != null)
+            {
+                httpContext.Request.Scheme = _Options.ExternalUrl.Scheme;
+                if (_Options.ExternalUrl.IsDefaultPort)
+                    httpContext.Request.Host = new HostString(_Options.ExternalUrl.Host);
+                else
+                    httpContext.Request.Host = new HostString(_Options.ExternalUrl.Host, _Options.ExternalUrl.Port);
+            }
+            // NGINX pass X-Forwarded-Proto and X-Forwarded-Port, so let's use that to have better guess of the real domain
+            else
+            {
+                ushort? p = null;
+                if (httpContext.Request.Headers.TryGetValue("X-Forwarded-Proto", out StringValues proto))
+                {
+                    var scheme = proto.SingleOrDefault();
+                    if (scheme != null)
+                    {
+                        httpContext.Request.Scheme = scheme;
+                        if (scheme == "http")
+                            p = 80;
+                        if (scheme == "https")
+                            p = 443;
+                    }
+                }
+                if (httpContext.Request.Headers.TryGetValue("X-Forwarded-Port", out StringValues port))
+                {
+                    var portString = port.SingleOrDefault();
+                    if (portString != null && ushort.TryParse(portString, out ushort pp))
+                    {
+                        p = pp;
+                    }
+                }
+                if (p.HasValue)
+                {
+                    bool isDefault = httpContext.Request.Scheme == "http" && p.Value == 80;
+                    isDefault |= httpContext.Request.Scheme == "https" && p.Value == 443;
+                    if (isDefault)
+                        httpContext.Request.Host = new HostString(httpContext.Request.Host.Host);
+                    else
+                        httpContext.Request.Host = new HostString(httpContext.Request.Host.Host, p.Value);
+                }
+            }
+        }
+
         private static async Task HandleBitpayHttpException(HttpContext httpContext, BitpayHttpException ex)
         {
             httpContext.Response.StatusCode = ex.StatusCode;

BTCPayServer/Hosting/Startup.cs

@@ -144,6 +144,7 @@ namespace BTCPayServer.Hosting
             app.UseAuthentication();
             app.UseHangfireServer();
             app.UseHangfireDashboard("/hangfire", new DashboardOptions() { Authorization = new[] { new NeedRole(Roles.ServerAdmin) } });
+            app.UseWebSockets();
             app.UseMvc(routes =>
             {
                 routes.MapRoute(

BTCPayServer/Initializer.cs

@@ -0,0 +1,45 @@
+using System;
+using Microsoft.Extensions.Logging;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using BTCPayServer.Controllers;
+using BTCPayServer.Logging;
+using BTCPayServer.Events;
+
+namespace BTCPayServer
+{
+    public class Initializer
+    {
+        EventAggregator _Aggregator;
+        CallbackController _CallbackController;
+        public Initializer(EventAggregator aggregator, 
+            CallbackController callbackController
+            )
+        {
+            _Aggregator = aggregator;
+            _CallbackController = callbackController;
+        }
+        public void Init()
+        {
+            _Aggregator.Subscribe<NBXplorerStateChangedEvent>(async (s, evt) =>
+            {
+                if (evt.NewState == NBXplorerState.Ready)
+                {
+                    s.Unsubscribe();
+                    try
+                    {
+                        var callback = await _CallbackController.GetCallbackBlockUriAsync();
+                        await _CallbackController.RegisterCallbackBlockUriAsync(callback);
+                        Logs.PayServer.LogInformation($"Registering block callback to " + callback);
+                    }
+                    catch (Exception ex)
+                    {
+                        Logs.PayServer.LogError(ex, "Could not register block callback");
+                        s.Resubscribe();
+                    }
+                }
+            });
+        }
+    }
+}

BTCPayServer/Logging/Logs.cs

@@ -17,6 +17,7 @@ namespace BTCPayServer.Logging
         {
             Configuration = factory.CreateLogger("Configuration");
             PayServer = factory.CreateLogger("PayServer");
+            Events = factory.CreateLogger("PayServer");
         }
         public static ILogger Configuration
         {
@@ -26,6 +27,12 @@ namespace BTCPayServer.Logging
         {
             get; set;
         }
+
+        public static ILogger Events
+        {
+            get; set;
+        }
+
         public const int ColumnLength = 16;
     }
 

BTCPayServer/Migrations/20171105235734_PaymentAccounted.Designer.cs

@@ -0,0 +1,479 @@
+// <auto-generated />
+using BTCPayServer.Data;
+using BTCPayServer.Services.Invoices;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage;
+using Microsoft.EntityFrameworkCore.Storage.Internal;
+using System;
+
+namespace BTCPayServer.Migrations
+{
+    [DbContext(typeof(ApplicationDbContext))]
+    [Migration("20171105235734_PaymentAccounted")]
+    partial class PaymentAccounted
+    {
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "2.0.0-rtm-26452");
+
+            modelBuilder.Entity("BTCPayServer.Data.AddressInvoiceData", b =>
+                {
+                    b.Property<string>("Address")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<DateTimeOffset?>("CreatedTime");
+
+                    b.Property<string>("InvoiceDataId");
+
+                    b.HasKey("Address");
+
+                    b.HasIndex("InvoiceDataId");
+
+                    b.ToTable("AddressInvoices");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.HistoricalAddressInvoiceData", b =>
+                {
+                    b.Property<string>("InvoiceDataId");
+
+                    b.Property<string>("Address");
+
+                    b.Property<DateTimeOffset>("Assigned");
+
+                    b.Property<DateTimeOffset?>("UnAssigned");
+
+                    b.HasKey("InvoiceDataId", "Address");
+
+                    b.ToTable("HistoricalAddressInvoices");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.InvoiceData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<byte[]>("Blob");
+
+                    b.Property<DateTimeOffset>("Created");
+
+                    b.Property<string>("CustomerEmail");
+
+                    b.Property<string>("ExceptionStatus");
+
+                    b.Property<string>("ItemCode");
+
+                    b.Property<string>("OrderId");
+
+                    b.Property<string>("Status");
+
+                    b.Property<string>("StoreDataId");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("StoreDataId");
+
+                    b.ToTable("Invoices");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.PairedSINData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("Facade");
+
+                    b.Property<string>("Label");
+
+                    b.Property<DateTimeOffset>("PairingTime");
+
+                    b.Property<string>("SIN");
+
+                    b.Property<string>("StoreDataId");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SIN");
+
+                    b.HasIndex("StoreDataId");
+
+                    b.ToTable("PairedSINData");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.PairingCodeData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<DateTime>("DateCreated");
+
+                    b.Property<DateTimeOffset>("Expiration");
+
+                    b.Property<string>("Facade");
+
+                    b.Property<string>("Label");
+
+                    b.Property<string>("SIN");
+
+                    b.Property<string>("StoreDataId");
+
+                    b.Property<string>("TokenValue");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("PairingCodes");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.PaymentData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<bool>("Accounted");
+
+                    b.Property<byte[]>("Blob");
+
+                    b.Property<string>("InvoiceDataId");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("InvoiceDataId");
+
+                    b.ToTable("Payments");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.PendingInvoiceData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.HasKey("Id");
+
+                    b.ToTable("PendingInvoices");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.RefundAddressesData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<byte[]>("Blob");
+
+                    b.Property<string>("InvoiceDataId");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("InvoiceDataId");
+
+                    b.ToTable("RefundAddresses");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.SettingData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("Value");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Settings");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.StoreData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("DerivationStrategy");
+
+                    b.Property<int>("SpeedPolicy");
+
+                    b.Property<byte[]>("StoreBlob");
+
+                    b.Property<byte[]>("StoreCertificate");
+
+                    b.Property<string>("StoreName");
+
+                    b.Property<string>("StoreWebsite");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Stores");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.UserStore", b =>
+                {
+                    b.Property<string>("ApplicationUserId");
+
+                    b.Property<string>("StoreDataId");
+
+                    b.Property<string>("Role");
+
+                    b.HasKey("ApplicationUserId", "StoreDataId");
+
+                    b.HasIndex("StoreDataId");
+
+                    b.ToTable("UserStore");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Models.ApplicationUser", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<int>("AccessFailedCount");
+
+                    b.Property<string>("ConcurrencyStamp")
+                        .IsConcurrencyToken();
+
+                    b.Property<string>("Email")
+                        .HasMaxLength(256);
+
+                    b.Property<bool>("EmailConfirmed");
+
+                    b.Property<bool>("LockoutEnabled");
+
+                    b.Property<DateTimeOffset?>("LockoutEnd");
+
+                    b.Property<string>("NormalizedEmail")
+                        .HasMaxLength(256);
+
+                    b.Property<string>("NormalizedUserName")
+                        .HasMaxLength(256);
+
+                    b.Property<string>("PasswordHash");
+
+                    b.Property<string>("PhoneNumber");
+
+                    b.Property<bool>("PhoneNumberConfirmed");
+
+                    b.Property<bool>("RequiresEmailConfirmation");
+
+                    b.Property<string>("SecurityStamp");
+
+                    b.Property<bool>("TwoFactorEnabled");
+
+                    b.Property<string>("UserName")
+                        .HasMaxLength(256);
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("NormalizedEmail")
+                        .HasName("EmailIndex");
+
+                    b.HasIndex("NormalizedUserName")
+                        .IsUnique()
+                        .HasName("UserNameIndex");
+
+                    b.ToTable("AspNetUsers");
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityRole", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("ConcurrencyStamp")
+                        .IsConcurrencyToken();
+
+                    b.Property<string>("Name")
+                        .HasMaxLength(256);
+
+                    b.Property<string>("NormalizedName")
+                        .HasMaxLength(256);
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("NormalizedName")
+                        .IsUnique()
+                        .HasName("RoleNameIndex");
+
+                    b.ToTable("AspNetRoles");
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityRoleClaim<string>", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("ClaimType");
+
+                    b.Property<string>("ClaimValue");
+
+                    b.Property<string>("RoleId")
+                        .IsRequired();
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("RoleId");
+
+                    b.ToTable("AspNetRoleClaims");
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserClaim<string>", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("ClaimType");
+
+                    b.Property<string>("ClaimValue");
+
+                    b.Property<string>("UserId")
+                        .IsRequired();
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("AspNetUserClaims");
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserLogin<string>", b =>
+                {
+                    b.Property<string>("LoginProvider");
+
+                    b.Property<string>("ProviderKey");
+
+                    b.Property<string>("ProviderDisplayName");
+
+                    b.Property<string>("UserId")
+                        .IsRequired();
+
+                    b.HasKey("LoginProvider", "ProviderKey");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("AspNetUserLogins");
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserRole<string>", b =>
+                {
+                    b.Property<string>("UserId");
+
+                    b.Property<string>("RoleId");
+
+                    b.HasKey("UserId", "RoleId");
+
+                    b.HasIndex("RoleId");
+
+                    b.ToTable("AspNetUserRoles");
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserToken<string>", b =>
+                {
+                    b.Property<string>("UserId");
+
+                    b.Property<string>("LoginProvider");
+
+                    b.Property<string>("Name");
+
+                    b.Property<string>("Value");
+
+                    b.HasKey("UserId", "LoginProvider", "Name");
+
+                    b.ToTable("AspNetUserTokens");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.AddressInvoiceData", b =>
+                {
+                    b.HasOne("BTCPayServer.Data.InvoiceData", "InvoiceData")
+                        .WithMany()
+                        .HasForeignKey("InvoiceDataId");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.HistoricalAddressInvoiceData", b =>
+                {
+                    b.HasOne("BTCPayServer.Data.InvoiceData")
+                        .WithMany("HistoricalAddressInvoices")
+                        .HasForeignKey("InvoiceDataId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.InvoiceData", b =>
+                {
+                    b.HasOne("BTCPayServer.Data.StoreData", "StoreData")
+                        .WithMany()
+                        .HasForeignKey("StoreDataId");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.PaymentData", b =>
+                {
+                    b.HasOne("BTCPayServer.Data.InvoiceData", "InvoiceData")
+                        .WithMany("Payments")
+                        .HasForeignKey("InvoiceDataId");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.RefundAddressesData", b =>
+                {
+                    b.HasOne("BTCPayServer.Data.InvoiceData", "InvoiceData")
+                        .WithMany("RefundAddresses")
+                        .HasForeignKey("InvoiceDataId");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.UserStore", b =>
+                {
+                    b.HasOne("BTCPayServer.Models.ApplicationUser", "ApplicationUser")
+                        .WithMany("UserStores")
+                        .HasForeignKey("ApplicationUserId")
+                        .OnDelete(DeleteBehavior.Cascade);
+
+                    b.HasOne("BTCPayServer.Data.StoreData", "StoreData")
+                        .WithMany("UserStores")
+                        .HasForeignKey("StoreDataId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityRoleClaim<string>", b =>
+                {
+                    b.HasOne("Microsoft.AspNetCore.Identity.IdentityRole")
+                        .WithMany()
+                        .HasForeignKey("RoleId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserClaim<string>", b =>
+                {
+                    b.HasOne("BTCPayServer.Models.ApplicationUser")
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserLogin<string>", b =>
+                {
+                    b.HasOne("BTCPayServer.Models.ApplicationUser")
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserRole<string>", b =>
+                {
+                    b.HasOne("Microsoft.AspNetCore.Identity.IdentityRole")
+                        .WithMany()
+                        .HasForeignKey("RoleId")
+                        .OnDelete(DeleteBehavior.Cascade);
+
+                    b.HasOne("BTCPayServer.Models.ApplicationUser")
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserToken<string>", b =>
+                {
+                    b.HasOne("BTCPayServer.Models.ApplicationUser")
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

BTCPayServer/Migrations/20171105235734_PaymentAccounted.cs

@@ -0,0 +1,25 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+using System;
+using System.Collections.Generic;
+
+namespace BTCPayServer.Migrations
+{
+    public partial class PaymentAccounted : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<bool>(
+                name: "Accounted",
+                table: "Payments",
+                nullable: false,
+                defaultValue: false);
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "Accounted",
+                table: "Payments");
+        }
+    }
+}

BTCPayServer/Migrations/ApplicationDbContextModelSnapshot.cs

@@ -132,6 +132,8 @@ namespace BTCPayServer.Migrations
                     b.Property<string>("Id")
                         .ValueGeneratedOnAdd();
 
+                    b.Property<bool>("Accounted");
+
                     b.Property<byte[]>("Blob");
 
                     b.Property<string>("InvoiceDataId");

BTCPayServer/Models/InvoicingModels/CreateInvoiceModel.cs

@@ -9,12 +9,22 @@ namespace BTCPayServer.Models.InvoicingModels
 {
     public class CreateInvoiceModel
     {
+        public CreateInvoiceModel()
+        {
+            Currency = "USD";
+        }
         [Required]
         public double? Amount
         {
             get; set;
         }
 
+        [Required]
+        public string Currency
+        {
+            get; set;
+        }
+
         [Required]
         public string StoreId
         {

BTCPayServer/Models/ServerViewModels/UsersViewModel.cs

@@ -9,6 +9,7 @@ namespace BTCPayServer.Models.ServerViewModels
     {
         public class UserViewModel
         {
+            public string Id { get; set; }
             public string Name
             {
                 get; set;

BTCPayServer/Models/StoreViewModels/StoreViewModel.cs

@@ -1,5 +1,6 @@
 using BTCPayServer.Services.Invoices;
 using BTCPayServer.Validations;
+using Microsoft.AspNetCore.Mvc.Rendering;
 using System;
 using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
@@ -10,6 +11,22 @@ namespace BTCPayServer.Models.StoreViewModels
 {
     public class StoreViewModel
     {
+        class Format
+        {
+            public string Name { get; set; }
+            public string Value { get; set; }
+        }
+        public StoreViewModel()
+        {
+            var btcPay = new Format { Name = "BTCPay", Value = "BTCPay" };
+            DerivationSchemeFormat = btcPay.Value;
+            DerivationSchemeFormats = new SelectList(new Format[]
+            {
+                btcPay,
+                new Format { Name = "Electrum", Value = "Electrum" },
+            }, nameof(btcPay.Value), nameof(btcPay.Name), btcPay);
+        }
+        public string Id { get; set; }
         [Display(Name = "Store Name")]
         [Required]
         [MaxLength(50)]
@@ -28,12 +45,28 @@ namespace BTCPayServer.Models.StoreViewModels
             set;
         }
 
-        [DerivationStrategyValidator]
         public string DerivationScheme
         {
             get; set;
         }
 
+        [Display(Name = "Derivation Scheme format")]
+        public string DerivationSchemeFormat
+        {
+            get;
+            set;
+        }
+
+        public SelectList DerivationSchemeFormats { get; set; }
+
+        [Display(Name = "Payment invalid if transactions fails to confirm after ... minutes")]
+        [Range(10, 60 * 24 * 31)]
+        public int MonitoringExpiration
+        {
+            get;
+            set;
+        }
+
         [Display(Name = "Consider the invoice confirmed when the payment transaction...")]
         public SpeedPolicy SpeedPolicy
         {

BTCPayServer/NBXplorerWaiter.cs

@@ -0,0 +1,175 @@
+using System;
+using Microsoft.Extensions.Logging;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using BTCPayServer.Logging;
+using Microsoft.Extensions.Hosting;
+using NBXplorer;
+using NBXplorer.Models;
+using System.Collections.Concurrent;
+using BTCPayServer.Events;
+
+namespace BTCPayServer
+{
+    public class NBXplorerWaiterAccessor
+    {
+        public NBXplorerWaiter Instance { get; set; }
+    }
+    public enum NBXplorerState
+    {
+        NotConnected,
+        Synching,
+        Ready
+    }
+
+    public class NBXplorerWaiter : IHostedService
+    {
+        public NBXplorerWaiter(ExplorerClient client, EventAggregator aggregator, NBXplorerWaiterAccessor accessor)
+        {
+            _Client = client;
+            _Aggregator = aggregator;
+            accessor.Instance = this;
+        }
+
+        EventAggregator _Aggregator;
+        ExplorerClient _Client;
+        Timer _Timer;
+        ManualResetEventSlim _Idle = new ManualResetEventSlim(true);
+        public Task StartAsync(CancellationToken cancellationToken)
+        {
+            _Timer = new Timer(Callback, null, 0, (int)TimeSpan.FromMinutes(1.0).TotalMilliseconds);
+            return Task.CompletedTask;
+        }
+
+        void Callback(object state)
+        {
+            if (!_Idle.IsSet)
+                return;
+            try
+            {
+                _Idle.Reset();
+                CheckStatus().GetAwaiter().GetResult();
+            }
+            catch (Exception ex)
+            {
+                Logs.PayServer.LogError(ex, "Error while checking NBXplorer state");
+            }
+            finally
+            {
+                _Idle.Set();
+            }
+        }
+
+        async Task CheckStatus()
+        {
+            while (await StepAsync())
+            {
+
+            }
+        }
+
+        private async Task<bool> StepAsync()
+        {
+            var oldState = State;
+
+            StatusResult status = null;
+            switch (State)
+            {
+                case NBXplorerState.NotConnected:
+                    status = await GetStatusWithTimeout();
+                    if (status != null)
+                    {
+                        if (status.IsFullySynched())
+                        {
+                            State = NBXplorerState.Ready;
+                        }
+                        else
+                        {
+                            State = NBXplorerState.Synching;
+                        }
+                    }
+                    break;
+                case NBXplorerState.Synching:
+                    status = await GetStatusWithTimeout();
+                    if (status == null)
+                    {
+                        State = NBXplorerState.NotConnected;
+                    }
+                    else if (status.IsFullySynched())
+                    {
+                        State = NBXplorerState.Ready;
+                    }
+                    break;
+                case NBXplorerState.Ready:
+                    status = await GetStatusWithTimeout();
+                    if (status == null)
+                    {
+                        State = NBXplorerState.NotConnected;
+                    }
+                    else if (!status.IsFullySynched())
+                    {
+                        State = NBXplorerState.Synching;
+                    }
+                    break;
+            }
+
+            LastStatus = status;
+            if (oldState != State)
+            {
+                if (State == NBXplorerState.Synching)
+                {
+                    SetInterval(TimeSpan.FromSeconds(10));
+                }
+                else
+                {
+                    SetInterval(TimeSpan.FromMinutes(1));
+                }
+                _Aggregator.Publish(new NBXplorerStateChangedEvent(oldState, State));
+            }
+            return oldState != State;
+        }
+
+        private void SetInterval(TimeSpan interval)
+        {
+            try
+            {
+                _Timer.Change(0, (int)interval.TotalMilliseconds);
+            }
+            catch { }
+        }
+
+        private async Task<StatusResult> GetStatusWithTimeout()
+        {
+            CancellationTokenSource cts = new CancellationTokenSource();
+            using (cts)
+            {
+                var cancellation = cts.Token;
+                while (!cancellation.IsCancellationRequested)
+                {
+                    try
+                    {
+                        var status = await _Client.GetStatusAsync(cancellation).ConfigureAwait(false);
+                        return status;
+                    }
+                    catch (OperationCanceledException) { }
+                    catch { }
+                }
+            }
+            return null;
+        }
+
+        public NBXplorerState State { get; private set; }
+
+        public StatusResult LastStatus { get; private set; }
+
+        public Task StopAsync(CancellationToken cancellationToken)
+        {
+            _Timer.Dispose();
+            _Timer = null;
+            _Idle.Wait();
+            return Task.CompletedTask;
+        }
+    }
+}

BTCPayServer/SearchString.cs

@@ -0,0 +1,49 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+
+namespace BTCPayServer
+{
+    public class SearchString
+    {
+        string _OriginalString;
+        public SearchString(string str)
+        {
+            str = str ?? string.Empty;
+            str = str.Trim();
+            _OriginalString = str.Trim();
+            TextSearch = _OriginalString;
+            var splitted = str.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
+            Filters
+                = splitted
+                    .Select(t => t.Split(new char[] { ':' }, StringSplitOptions.RemoveEmptyEntries))
+                    .Where(kv => kv.Length == 2)
+                    .Select(kv => new KeyValuePair<string, string>(kv[0].ToLowerInvariant(), kv[1]))
+                    .ToDictionary(o => o.Key, o => o.Value);
+
+            foreach(var filter in splitted)
+            {
+                if(filter.Split(new char[] { ':' }, StringSplitOptions.RemoveEmptyEntries).Length == 2)
+                { 
+                    TextSearch = TextSearch.Replace(filter, string.Empty);
+                }
+            }
+            TextSearch = TextSearch.Trim();
+        }
+
+        public string TextSearch
+        {
+            get;
+            private set;
+        }
+
+        public Dictionary<string, string> Filters { get; private set; }
+
+        public override string ToString()
+        {
+            return _OriginalString;
+        }
+    }
+}

BTCPayServer/Services/Invoices/InvoiceEntity.cs

@@ -9,6 +9,7 @@ using NBitpayClient;
 using Newtonsoft.Json.Linq;
 using NBitcoin.DataEncoders;
 using BTCPayServer.Data;
+using NBXplorer.Models;
 
 namespace BTCPayServer.Services.Invoices
 {
@@ -132,6 +133,7 @@ namespace BTCPayServer.Services.Invoices
             int txCount = 1;
             var payments =
                 Payments
+                .Where(p => p.Accounted)
                 .OrderByDescending(p => p.ReceivedTime)
                 .Select(_ =>
                 {
@@ -249,7 +251,8 @@ namespace BTCPayServer.Services.Invoices
             get;
             set;
         }
-        public DateTimeOffset? MonitoringExpiration
+        [JsonProperty(DefaultValueHandling = DefaultValueHandling.Populate)]
+        public DateTimeOffset MonitoringExpiration
         {
             get;
             set;
@@ -260,6 +263,12 @@ namespace BTCPayServer.Services.Invoices
             set;
         }
 
+        public HashSet<string> AvailableAddressHashes
+        {
+            get;
+            set;
+        }
+
         public bool IsExpired()
         {
             return DateTimeOffset.UtcNow > ExpirationTime;
@@ -277,7 +286,7 @@ namespace BTCPayServer.Services.Invoices
                 CurrentTime = DateTimeOffset.UtcNow,
                 InvoiceTime = InvoiceTime,
                 ExpirationTime = ExpirationTime,
-                BTCPrice = Money.Coins((decimal)(1.0 / Rate)).ToString(),
+                BTCPrice = Money.Coins((decimal)(ProductInformation.Price / Rate)).ToString(),
                 Status = Status,
                 Url = ServerUrl.WithTrailingSlash() + "invoice?id=" + Id,
                 Currency = ProductInformation.Currency,
@@ -300,7 +309,7 @@ namespace BTCPayServer.Services.Invoices
             dto.Token = Encoders.Base58.EncodeData(RandomUtils.GetBytes(16)); //No idea what it is useful for
             dto.Guid = Guid.NewGuid().ToString();
 
-            var paid = Payments.Select(p => p.Output.Value).Sum();
+            var paid = Payments.Where(p => p.Accounted).Select(p => p.Output.Value).Sum();
             dto.BTCPaid = paid.ToString();
             dto.BTCDue = GetCryptoDue().ToString();
 
@@ -321,6 +330,17 @@ namespace BTCPayServer.Services.Invoices
         }
     }
 
+    public class AccountedPaymentEntity
+    {
+        public int Confirmations
+        {
+            get;
+            set;
+        }
+        public PaymentEntity Payment { get; set; }
+        public Transaction Transaction { get; set; }
+    }
+
     public class PaymentEntity
     {
         public DateTimeOffset ReceivedTime
@@ -335,5 +355,9 @@ namespace BTCPayServer.Services.Invoices
         {
             get; set;
         }
+        public bool Accounted
+        {
+            get; set;
+        }
     }
 }

BTCPayServer/Services/Invoices/InvoiceNotificationManager.cs

@@ -15,10 +15,12 @@ using NBitpayClient;
 using Newtonsoft.Json.Linq;
 using Newtonsoft.Json;
 using System.Collections.Concurrent;
+using Microsoft.Extensions.Hosting;
+using BTCPayServer.Events;
 
 namespace BTCPayServer.Services.Invoices
 {
-    public class InvoiceNotificationManager
+    public class InvoiceNotificationManager : IHostedService
     {
         public static HttpClient _Client = new HttpClient();
 
@@ -41,16 +43,32 @@ namespace BTCPayServer.Services.Invoices
         }
 
         IBackgroundJobClient _JobClient;
+        EventAggregator _EventAggregator;
+        InvoiceRepository _InvoiceRepository;
+
         public InvoiceNotificationManager(
             IBackgroundJobClient jobClient,
+            EventAggregator eventAggregator,
+            InvoiceRepository invoiceRepository,
             ILogger<InvoiceNotificationManager> logger)
         {
             Logger = logger as ILogger ?? NullLogger.Instance;
             _JobClient = jobClient;
+            _EventAggregator = eventAggregator;
+            _InvoiceRepository = invoiceRepository;
         }
 
-        public void Notify(InvoiceEntity invoice)
+        async Task Notify(InvoiceEntity invoice)
         {
+            CancellationTokenSource cts = new CancellationTokenSource(10000);
+            try
+            {
+                await SendNotification(invoice, cts.Token);
+                return;
+            }
+            catch // It fails, it is OK because we try with hangfire after
+            {
+            }
             var invoiceStr = NBitcoin.JsonConverters.Serializer.ToString(new ScheduledJob() { TryCount = 0, Invoice = invoice });
             if (!string.IsNullOrEmpty(invoice.NotificationURL))
                 _JobClient.Schedule(() => NotifyHttp(invoiceStr), TimeSpan.Zero);
@@ -70,31 +88,7 @@ namespace BTCPayServer.Services.Invoices
             CancellationTokenSource cts = new CancellationTokenSource(10000);
             try
             {
-                var request = new HttpRequestMessage();
-                request.Method = HttpMethod.Post;
-
-                var dto = job.Invoice.EntityToDTO();
-                InvoicePaymentNotification notification = new InvoicePaymentNotification()
-                {
-                    Id = dto.Id,
-                    Url = dto.Url,
-                    BTCDue = dto.BTCDue,
-                    BTCPaid = dto.BTCPaid,
-                    BTCPrice = dto.BTCPrice,
-                    Currency = dto.Currency,
-                    CurrentTime = dto.CurrentTime,
-                    ExceptionStatus = dto.ExceptionStatus,
-                    ExpirationTime = dto.ExpirationTime,
-                    InvoiceTime = dto.InvoiceTime,
-                    PosData = dto.PosData,
-                    Price = dto.Price,
-                    Rate = dto.Rate,
-                    Status = dto.Status,
-                    BuyerFields = job.Invoice.RefundMail == null ? null : new Newtonsoft.Json.Linq.JObject() { new JProperty("buyerEmail", job.Invoice.RefundMail) }
-                };
-                request.RequestUri = new Uri(job.Invoice.NotificationURL, UriKind.Absolute);
-                request.Content = new StringContent(JsonConvert.SerializeObject(notification), Encoding.UTF8, "application/json");
-                var response = await _Client.SendAsync(request, cts.Token);
+                HttpResponseMessage response = await SendNotification(job.Invoice, cts.Token);
                 reschedule = response.StatusCode != System.Net.HttpStatusCode.OK;
                 Logger.LogInformation("Job " + jobId + " returned " + response.StatusCode);
             }
@@ -116,11 +110,73 @@ namespace BTCPayServer.Services.Invoices
             }
         }
 
+        private static async Task<HttpResponseMessage> SendNotification(InvoiceEntity invoice, CancellationToken cancellation)
+        {
+            var request = new HttpRequestMessage();
+            request.Method = HttpMethod.Post;
+
+            var dto = invoice.EntityToDTO();
+            InvoicePaymentNotification notification = new InvoicePaymentNotification()
+            {
+                Id = dto.Id,
+                Url = dto.Url,
+                BTCDue = dto.BTCDue,
+                BTCPaid = dto.BTCPaid,
+                BTCPrice = dto.BTCPrice,
+                Currency = dto.Currency,
+                CurrentTime = dto.CurrentTime,
+                ExceptionStatus = dto.ExceptionStatus,
+                ExpirationTime = dto.ExpirationTime,
+                InvoiceTime = dto.InvoiceTime,
+                PosData = dto.PosData,
+                Price = dto.Price,
+                Rate = dto.Rate,
+                Status = dto.Status,
+                BuyerFields = invoice.RefundMail == null ? null : new Newtonsoft.Json.Linq.JObject() { new JProperty("buyerEmail", invoice.RefundMail) }
+            };
+            request.RequestUri = new Uri(invoice.NotificationURL, UriKind.Absolute);
+            request.Content = new StringContent(JsonConvert.SerializeObject(notification), Encoding.UTF8, "application/json");
+            var response = await _Client.SendAsync(request, cancellation);
+            return response;
+        }
+
         int MaxTry = 6;
 
         private static string GetHttpJobId(InvoiceEntity invoice)
         {
             return $"{invoice.Id}-{invoice.Status}-HTTP";
         }
+
+        CompositeDisposable leases = new CompositeDisposable();
+        public Task StartAsync(CancellationToken cancellationToken)
+        {
+            leases.Add(_EventAggregator.Subscribe<InvoiceStatusChangedEvent>(async e => 
+            {
+                var invoice = await _InvoiceRepository.GetInvoice(null, e.InvoiceId);
+
+                // we need to use the status in the event and not in the invoice. The invoice might now be in another status.
+                if (invoice.FullNotifications)
+                {
+                    if (e.NewState == "expired" ||
+                       e.NewState == "paid" ||
+                       e.NewState == "invalid" ||
+                       e.NewState == "complete"
+                     )
+                        await Notify(invoice);
+                }
+                
+                if(e.NewState == "confirmed")
+                {
+                    await Notify(invoice);
+                }
+            }));
+            return Task.CompletedTask;
+        }
+
+        public Task StopAsync(CancellationToken cancellationToken)
+        {
+            leases.Dispose();
+            return Task.CompletedTask;
+        }
     }
 }

BTCPayServer/Services/Invoices/InvoiceRepository.cs

@@ -19,7 +19,7 @@ using BTCPayServer.Models.InvoicingModels;
 
 namespace BTCPayServer.Services.Invoices
 {
-    public class InvoiceRepository
+    public class InvoiceRepository : IDisposable
     {
 
 
@@ -45,24 +45,17 @@ namespace BTCPayServer.Services.Invoices
                 _Network = value;
             }
         }
-
+        
         private ApplicationDbContextFactory _ContextFactory;
-        public InvoiceRepository(ApplicationDbContextFactory contextFactory, DBreezeEngine engine, Network network)
+        private CustomThreadPool _IndexerThread;
+        public InvoiceRepository(ApplicationDbContextFactory contextFactory, string dbreezePath, Network network)
         {
-            _Engine = engine;
+            _Engine = new DBreezeEngine(dbreezePath);
+            _IndexerThread = new CustomThreadPool(1, "Invoice Indexer");
             _Network = network;
             _ContextFactory = contextFactory;
         }
 
-        public async Task AddPendingInvoice(string invoiceId)
-        {
-            using (var ctx = _ContextFactory.CreateContext())
-            {
-                ctx.PendingInvoices.Add(new PendingInvoiceData() { Id = invoiceId });
-                await ctx.SaveChangesAsync();
-            }
-        }
-
         public async Task<bool> RemovePendingInvoice(string invoiceId)
         {
             using (var ctx = _ContextFactory.CreateContext())
@@ -117,7 +110,7 @@ namespace BTCPayServer.Services.Invoices
             invoice.StoreId = storeId;
             using (var context = _ContextFactory.CreateContext())
             {
-                await context.AddAsync(new InvoiceData()
+                context.Invoices.Add(new InvoiceData()
                 {
                     StoreDataId = storeId,
                     Id = invoice.Id,
@@ -127,21 +120,20 @@ namespace BTCPayServer.Services.Invoices
                     Status = invoice.Status,
                     ItemCode = invoice.ProductInformation.ItemCode,
                     CustomerEmail = invoice.RefundMail
-                }).ConfigureAwait(false);
-
+                });
                 context.AddressInvoices.Add(new AddressInvoiceData()
                 {
                     Address = invoice.DepositAddress.ScriptPubKey.Hash.ToString(),
                     InvoiceDataId = invoice.Id,
                     CreatedTime = DateTimeOffset.UtcNow,
                 });
-
                 context.HistoricalAddressInvoices.Add(new HistoricalAddressInvoiceData()
                 {
                     InvoiceDataId = invoice.Id,
                     Address = invoice.DepositAddress.ToString(),
                     Assigned = DateTimeOffset.UtcNow
                 });
+                context.PendingInvoices.Add(new PendingInvoiceData() { Id = invoice.Id });
                 await context.SaveChangesAsync().ConfigureAwait(false);
             }
 
@@ -231,11 +223,14 @@ namespace BTCPayServer.Services.Invoices
 
         void AddToTextSearch(string invoiceId, params string[] terms)
         {
-            using (var tx = _Engine.GetTransaction())
+            _IndexerThread.DoAsync(() => 
             {
-                tx.TextInsert("InvoiceSearch", Encoders.Base58.DecodeData(invoiceId), string.Join(" ", terms.Where(t => !String.IsNullOrWhiteSpace(t))));
-                tx.Commit();
-            }
+                using (var tx = _Engine.GetTransaction())
+                {
+                    tx.TextInsert("InvoiceSearch", Encoders.Base58.DecodeData(invoiceId), string.Join(" ", terms.Where(t => !String.IsNullOrWhiteSpace(t))));
+                    tx.Commit();
+                }
+            });
         }
 
         public async Task UpdateInvoiceStatus(string invoiceId, string status, string exceptionStatus)
@@ -251,7 +246,18 @@ namespace BTCPayServer.Services.Invoices
             }
         }
 
-        public async Task<InvoiceEntity> GetInvoice(string storeId, string id, bool includeHistoricalAddresses = false)
+        public async Task UpdatePaidInvoiceToInvalid(string invoiceId)
+        {
+            using (var context = _ContextFactory.CreateContext())
+            {
+                var invoiceData = await context.FindAsync<InvoiceData>(invoiceId).ConfigureAwait(false);
+                if (invoiceData?.Status != "paid")
+                    return;
+                invoiceData.Status = "invalid";
+                await context.SaveChangesAsync().ConfigureAwait(false);
+            }
+        }
+        public async Task<InvoiceEntity> GetInvoice(string storeId, string id, bool inludeAddressData = false)
         {
             using (var context = _ContextFactory.CreateContext())
             {
@@ -260,8 +266,8 @@ namespace BTCPayServer.Services.Invoices
                     .Invoices
                     .Include(o => o.Payments)
                     .Include(o => o.RefundAddresses);
-                if (includeHistoricalAddresses)
-                    query = query.Include(o => o.HistoricalAddressInvoices);
+                if (inludeAddressData)
+                    query = query.Include(o => o.HistoricalAddressInvoices).Include(o => o.AddressInvoices);
                 query = query.Where(i => i.Id == id);
 
                 if (storeId != null)
@@ -278,7 +284,12 @@ namespace BTCPayServer.Services.Invoices
         private InvoiceEntity ToEntity(InvoiceData invoice)
         {
             var entity = ToObject<InvoiceEntity>(invoice.Blob);
-            entity.Payments = invoice.Payments.Select(p => ToObject<PaymentEntity>(p.Blob)).ToList();
+            entity.Payments = invoice.Payments.Select(p => 
+            {
+                var paymentEntity = ToObject<PaymentEntity>(p.Blob);
+                paymentEntity.Accounted = p.Accounted;
+                return paymentEntity;
+            }).ToList();
             entity.ExceptionStatus = invoice.ExceptionStatus;
             entity.Status = invoice.Status;
             entity.RefundMail = invoice.CustomerEmail;
@@ -287,6 +298,10 @@ namespace BTCPayServer.Services.Invoices
             {
                 entity.HistoricalAddresses = invoice.HistoricalAddressInvoices.ToArray();
             }
+            if (invoice.AddressInvoices != null)
+            {
+                entity.AvailableAddressHashes = invoice.AddressInvoices.Select(a => a.Address).ToHashSet();
+            }
             return entity;
         }
 
@@ -364,12 +379,12 @@ namespace BTCPayServer.Services.Invoices
                 int i = 0;
                 foreach (var output in outputs)
                 {
-                    await context.RefundAddresses.AddAsync(new RefundAddressesData()
+                    context.RefundAddresses.Add(new RefundAddressesData()
                     {
                         Id = invoiceId + "-" + i,
                         InvoiceDataId = invoiceId,
                         Blob = ToBytes(output)
-                    }).ConfigureAwait(false);
+                    });
                     i++;
                 }
                 await context.SaveChangesAsync().ConfigureAwait(false);
@@ -397,13 +412,32 @@ namespace BTCPayServer.Services.Invoices
                     InvoiceDataId = invoiceId
                 };
 
-                await context.Payments.AddAsync(data).ConfigureAwait(false);
+                context.Payments.Add(data);
 
                 await context.SaveChangesAsync().ConfigureAwait(false);
+                AddToTextSearch(invoiceId, receivedCoin.Outpoint.Hash.ToString());
                 return entity;
             }
         }
 
+        public async Task UpdatePayments(List<AccountedPaymentEntity> payments)
+        {
+            if (payments.Count == 0)
+                return;
+            using (var context = _ContextFactory.CreateContext())
+            {
+                foreach (var payment in payments)
+                {
+                    var data = new PaymentData();
+                    data.Id = payment.Payment.Outpoint.ToString();
+                    data.Accounted = payment.Payment.Accounted;
+                    context.Attach(data);
+                    context.Entry(data).Property(o => o.Accounted).IsModified = true;
+                }
+                await context.SaveChangesAsync().ConfigureAwait(false);
+            }
+        }
+
         private T ToObject<T>(byte[] value)
         {
             return NBitcoin.JsonConverters.Serializer.ToObject<T>(ZipUtils.Unzip(value), Network);
@@ -423,6 +457,14 @@ namespace BTCPayServer.Services.Invoices
         {
             return NBitcoin.JsonConverters.Serializer.ToString(data, Network);
         }
+
+        public void Dispose()
+        {
+            if (_Engine != null)
+                _Engine.Dispose();
+            if (_IndexerThread != null)
+                _IndexerThread.Dispose();
+        }
     }
 
     public class InvoiceQuery

BTCPayServer/Services/Invoices/InvoiceWatcher.cs

@@ -13,21 +13,29 @@ using Microsoft.Extensions.Hosting;
 using System.Collections.Concurrent;
 using Hangfire;
 using BTCPayServer.Services.Wallets;
+using BTCPayServer.Controllers;
+using BTCPayServer.Events;
 
 namespace BTCPayServer.Services.Invoices
 {
+    public class InvoiceWatcherAccessor
+    {
+        public InvoiceWatcher Instance { get; set; }
+    }
     public class InvoiceWatcher : IHostedService
     {
         InvoiceRepository _InvoiceRepository;
         ExplorerClient _ExplorerClient;
         DerivationStrategyFactory _DerivationFactory;
-        InvoiceNotificationManager _NotificationManager;
+        EventAggregator _EventAggregator;
         BTCPayWallet _Wallet;
+        
 
         public InvoiceWatcher(ExplorerClient explorerClient,
             InvoiceRepository invoiceRepository,
+            EventAggregator eventAggregator,
             BTCPayWallet wallet,
-            InvoiceNotificationManager notificationManager)
+            InvoiceWatcherAccessor accessor)
         {
             LongPollingMode = explorerClient.Network == Network.RegTest;
             PollInterval = explorerClient.Network == Network.RegTest ? TimeSpan.FromSeconds(10.0) : TimeSpan.FromMinutes(1.0);
@@ -35,22 +43,24 @@ namespace BTCPayServer.Services.Invoices
             _ExplorerClient = explorerClient ?? throw new ArgumentNullException(nameof(explorerClient));
             _DerivationFactory = new DerivationStrategyFactory(_ExplorerClient.Network);
             _InvoiceRepository = invoiceRepository ?? throw new ArgumentNullException(nameof(invoiceRepository));
-            _NotificationManager = notificationManager ?? throw new ArgumentNullException(nameof(notificationManager));
+            _EventAggregator = eventAggregator ?? throw new ArgumentNullException(nameof(eventAggregator));
+            accessor.Instance = this;
         }
+        CompositeDisposable leases = new CompositeDisposable();
 
         public bool LongPollingMode
         {
             get; set;
         }
 
-        public async Task NotifyReceived(Script scriptPubKey)
+        async Task NotifyReceived(Script scriptPubKey)
         {
             var invoice = await _InvoiceRepository.GetInvoiceIdFromScriptPubKey(scriptPubKey);
             if (invoice != null)
                 _WatchRequests.Add(invoice);
         }
 
-        public async Task NotifyBlock()
+        async Task NotifyBlock()
         {
             foreach (var invoice in await _InvoiceRepository.GetPendingInvoices())
             {
@@ -65,24 +75,28 @@ namespace BTCPayServer.Services.Invoices
             {
                 try
                 {
-                    var invoice = await _InvoiceRepository.GetInvoice(null, invoiceId).ConfigureAwait(false);
+                    var invoice = await _InvoiceRepository.GetInvoice(null, invoiceId, true).ConfigureAwait(false);
                     if (invoice == null)
                         break;
                     var stateBefore = invoice.Status;
-                    var result = await UpdateInvoice(changes, invoice).ConfigureAwait(false);
+                    var postSaveActions = new List<Action>();
+                    var result = await UpdateInvoice(changes, invoice, postSaveActions).ConfigureAwait(false);
                     changes = result.Changes;
                     if (result.NeedSave)
+                    { 
                         await _InvoiceRepository.UpdateInvoiceStatus(invoice.Id, invoice.Status, invoice.ExceptionStatus).ConfigureAwait(false);
-
-                    var changed = stateBefore != invoice.Status;
-                    if (changed)
-                    {
-                        Logs.PayServer.LogInformation($"Invoice {invoice.Id}: {stateBefore} => {invoice.Status}");
+                        _EventAggregator.Publish(new InvoiceDataChangedEvent() { InvoiceId = invoice.Id });
                     }
 
-                    var expirationMonitoring = invoice.MonitoringExpiration.HasValue ? invoice.MonitoringExpiration.Value : invoice.InvoiceTime + TimeSpan.FromMinutes(60);
+                    var changed = stateBefore != invoice.Status;
+
+                    foreach(var saveAction in postSaveActions)
+                    {
+                        saveAction();
+                    }
+                    
                     if (invoice.Status == "complete" ||
-                       ((invoice.Status == "invalid" || invoice.Status == "expired") && expirationMonitoring < DateTimeOffset.UtcNow))
+                       ((invoice.Status == "invalid" || invoice.Status == "expired") && invoice.MonitoringExpiration < DateTimeOffset.UtcNow))
                     {
                         if (await _InvoiceRepository.RemovePendingInvoice(invoice.Id).ConfigureAwait(false))
                             Logs.PayServer.LogInformation("Stopped watching invoice " + invoiceId);
@@ -105,7 +119,7 @@ namespace BTCPayServer.Services.Invoices
         }
 
 
-        private async Task<(bool NeedSave, UTXOChanges Changes)> UpdateInvoice(UTXOChanges changes, InvoiceEntity invoice)
+        private async Task<(bool NeedSave, UTXOChanges Changes)> UpdateInvoice(UTXOChanges changes, InvoiceEntity invoice, List<Action> postSaveActions)
         {
             bool needSave = false;
             //Fetch unknown payments
@@ -113,28 +127,19 @@ namespace BTCPayServer.Services.Invoices
             changes = await _ExplorerClient.SyncAsync(strategy, changes, !LongPollingMode, _Cts.Token).ConfigureAwait(false);
 
             var utxos = changes.Confirmed.UTXOs.Concat(changes.Unconfirmed.UTXOs).ToArray();
-            var invoiceIds = utxos.Select(u => _InvoiceRepository.GetInvoiceIdFromScriptPubKey(u.Output.ScriptPubKey)).ToArray();
-            utxos =
-                utxos
-                .Where((u, i) => invoiceIds[i].GetAwaiter().GetResult() == invoice.Id)
-                .ToArray();
-
             List<Coin> receivedCoins = new List<Coin>();
             foreach (var received in utxos)
-                if (received.Output.ScriptPubKey == invoice.DepositAddress.ScriptPubKey)
+                if (invoice.AvailableAddressHashes.Contains(received.Output.ScriptPubKey.Hash.ToString()))
                     receivedCoins.Add(new Coin(received.Outpoint, received.Output));
 
             var alreadyAccounted = new HashSet<OutPoint>(invoice.Payments.Select(p => p.Outpoint));
-            BitcoinAddress generatedAddress = null;
             bool dirtyAddress = false;
             foreach (var coin in receivedCoins.Where(c => !alreadyAccounted.Contains(c.Outpoint)))
             {
                 var payment = await _InvoiceRepository.AddPayment(invoice.Id, coin).ConfigureAwait(false);
                 invoice.Payments.Add(payment);
-                if (coin.ScriptPubKey == invoice.DepositAddress.ScriptPubKey && generatedAddress == null)
-                {
-                    dirtyAddress = true;
-                }
+                postSaveActions.Add(() => _EventAggregator.Publish(new InvoicePaymentEvent(invoice.Id)));
+                dirtyAddress = true;
             }
             //////
 
@@ -142,21 +147,20 @@ namespace BTCPayServer.Services.Invoices
             {
                 needSave = true;
                 await _InvoiceRepository.UnaffectAddress(invoice.Id);
+
+                postSaveActions.Add(() => _EventAggregator.Publish(new InvoiceStatusChangedEvent(invoice, "expired")));
                 invoice.Status = "expired";
             }
 
             if (invoice.Status == "new" || invoice.Status == "expired")
             {
-                var totalPaid = invoice.Payments.Select(p => p.Output.Value).Sum();
+                var totalPaid = (await GetPaymentsWithTransaction(invoice)).Select(p => p.Payment.Output.Value).Sum();
                 if (totalPaid >= invoice.GetTotalCryptoDue())
                 {
                     if (invoice.Status == "new")
                     {
+                        postSaveActions.Add(() => _EventAggregator.Publish(new InvoiceStatusChangedEvent(invoice, "paid")));
                         invoice.Status = "paid";
-                        if (invoice.FullNotifications)
-                        {
-                            _NotificationManager.Notify(invoice);
-                        }
                         invoice.ExceptionStatus = null;
                         await _InvoiceRepository.UnaffectAddress(invoice.Id);
                         needSave = true;
@@ -191,64 +195,115 @@ namespace BTCPayServer.Services.Invoices
 
             if (invoice.Status == "paid")
             {
-                if (!invoice.MonitoringExpiration.HasValue || invoice.MonitoringExpiration > DateTimeOffset.UtcNow)
+                var transactions = await GetPaymentsWithTransaction(invoice);
+                var chainConfirmedTransactions = transactions.Where(t => t.Confirmations >= 1);
+                if (invoice.SpeedPolicy == SpeedPolicy.HighSpeed)
                 {
-                    var transactions = await GetPaymentsWithTransaction(invoice);
-                    if (invoice.SpeedPolicy == SpeedPolicy.HighSpeed)
-                    {
-                        transactions = transactions.Where(t => !t.Transaction.Transaction.RBF);
-                    }
-                    else if (invoice.SpeedPolicy == SpeedPolicy.MediumSpeed)
-                    {
-                        transactions = transactions.Where(t => t.Transaction.Confirmations >= 1);
-                    }
-                    else if (invoice.SpeedPolicy == SpeedPolicy.LowSpeed)
-                    {
-                        transactions = transactions.Where(t => t.Transaction.Confirmations >= 6);
-                    }
+                    transactions = transactions.Where(t => !t.Transaction.RBF);
+                }
+                else if (invoice.SpeedPolicy == SpeedPolicy.MediumSpeed)
+                {
+                    transactions = transactions.Where(t => t.Confirmations >= 1);
+                }
+                else if (invoice.SpeedPolicy == SpeedPolicy.LowSpeed)
+                {
+                    transactions = transactions.Where(t => t.Confirmations >= 6);
+                }
 
+                var chainTotalConfirmed = chainConfirmedTransactions.Select(t => t.Payment.Output.Value).Sum();
+
+                if (// Is after the monitoring deadline
+                   (invoice.MonitoringExpiration < DateTimeOffset.UtcNow)
+                   &&
+                   // And not enough amount confirmed
+                   (chainTotalConfirmed < invoice.GetTotalCryptoDue()))
+                {
+                    await _InvoiceRepository.UnaffectAddress(invoice.Id);
+                    postSaveActions.Add(() => _EventAggregator.Publish(new InvoiceStatusChangedEvent(invoice, "invalid")));
+                    invoice.Status = "invalid";
+                    needSave = true;
+                }
+                else
+                {
                     var totalConfirmed = transactions.Select(t => t.Payment.Output.Value).Sum();
                     if (totalConfirmed >= invoice.GetTotalCryptoDue())
                     {
                         await _InvoiceRepository.UnaffectAddress(invoice.Id);
+                        postSaveActions.Add(() => _EventAggregator.Publish(new InvoiceStatusChangedEvent(invoice, "confirmed")));
                         invoice.Status = "confirmed";
-                        _NotificationManager.Notify(invoice);
                         needSave = true;
                     }
                 }
-                else
-                {
-                    await _InvoiceRepository.UnaffectAddress(invoice.Id);
-                    invoice.Status = "invalid";
-                    needSave = true;
-                }
             }
 
             if (invoice.Status == "confirmed")
             {
                 var transactions = await GetPaymentsWithTransaction(invoice);
-                transactions = transactions.Where(t => t.Transaction.Confirmations >= 6);
+                transactions = transactions.Where(t => t.Confirmations >= 6);
                 var totalConfirmed = transactions.Select(t => t.Payment.Output.Value).Sum();
                 if (totalConfirmed >= invoice.GetTotalCryptoDue())
                 {
+                    postSaveActions.Add(() => _EventAggregator.Publish(new InvoiceStatusChangedEvent(invoice, "complete")));
                     invoice.Status = "complete";
-                    if (invoice.FullNotifications)
-                        _NotificationManager.Notify(invoice);
                     needSave = true;
                 }
             }
-
             return (needSave, changes);
         }
 
-        private async Task<IEnumerable<(PaymentEntity Payment, TransactionResult Transaction)>> GetPaymentsWithTransaction(InvoiceEntity invoice)
+        private async Task<IEnumerable<AccountedPaymentEntity>> GetPaymentsWithTransaction(InvoiceEntity invoice)
         {
-            var getPayments = invoice.Payments
-                                                 .Select(async o => (Payment: o, Transaction: await _ExplorerClient.GetTransactionAsync(o.Outpoint.Hash, _Cts.Token)))
-                                                 .ToArray();
-            await Task.WhenAll(getPayments).ConfigureAwait(false);
-            var transactions = getPayments.Select(c => (Payment: c.Result.Payment, Transaction: c.Result.Transaction));
-            return transactions;
+            var transactions = await _ExplorerClient.GetTransactions(invoice.Payments.Select(t => t.Outpoint.Hash).ToArray());
+
+            var spentTxIn = new Dictionary<OutPoint, AccountedPaymentEntity>();
+            var result = invoice.Payments.Select(p => p.Outpoint).ToHashSet();
+            List<AccountedPaymentEntity> payments = new List<AccountedPaymentEntity>();
+            foreach (var payment in invoice.Payments)
+            {
+                TransactionResult tx;
+                if (!transactions.TryGetValue(payment.Outpoint.Hash, out tx))
+                {
+                    result.Remove(payment.Outpoint);
+                    continue;
+                }
+                AccountedPaymentEntity accountedPayment = new AccountedPaymentEntity()
+                {
+                    Confirmations = tx.Confirmations,
+                    Transaction = tx.Transaction,
+                    Payment = payment
+                };
+                payments.Add(accountedPayment);
+                foreach (var txin in tx.Transaction.Inputs)
+                {
+                    if (!spentTxIn.TryAdd(txin.PrevOut, accountedPayment))
+                    {
+                        //We get a double spend
+                        var existing = spentTxIn[txin.PrevOut];
+
+                        //Take the most recent, the full node is already comparing fees correctly so we have the most likely to be confirmed
+                        if (accountedPayment.Confirmations > 1 || existing.Payment.ReceivedTime < accountedPayment.Payment.ReceivedTime)
+                        {
+                            spentTxIn[txin.PrevOut] = accountedPayment;
+                            result.Remove(existing.Payment.Outpoint);
+                        }
+                    }
+                }
+            }
+
+            List<PaymentEntity> updated = new List<PaymentEntity>();
+            var accountedPayments = payments.Where(p =>
+            {
+                var accounted = result.Contains(p.Payment.Outpoint);
+                if (p.Payment.Accounted != accounted)
+                {
+                    p.Payment.Accounted = accounted;
+                    updated.Add(p.Payment);
+                }
+                return accounted;
+            }).ToArray();
+
+            await _InvoiceRepository.UpdatePayments(payments);
+            return accountedPayments;
         }
 
         TimeSpan _PollInterval;
@@ -268,12 +323,10 @@ namespace BTCPayServer.Services.Invoices
             }
         }
 
-        public async Task WatchAsync(string invoiceId, bool singleShot = false)
+        public void Watch(string invoiceId)
         {
             if (invoiceId == null)
                 throw new ArgumentNullException(nameof(invoiceId));
-            if (!singleShot)
-                await _InvoiceRepository.AddPendingInvoice(invoiceId).ConfigureAwait(false);
             _WatchRequests.Add(invoiceId);
         }
 
@@ -303,6 +356,10 @@ namespace BTCPayServer.Services.Invoices
                     _WatchRequests.Add(pending);
                 }
             }, null, 0, (int)PollInterval.TotalMilliseconds);
+
+            leases.Add(_EventAggregator.Subscribe<NewBlockEvent>(async b => { await NotifyBlock(); }));
+            leases.Add(_EventAggregator.Subscribe<TxOutReceivedEvent>(async b => { await NotifyReceived(b.ScriptPubKey); }));
+
             return Task.CompletedTask;
         }
 
@@ -349,6 +406,7 @@ namespace BTCPayServer.Services.Invoices
 
         public Task StopAsync(CancellationToken cancellationToken)
         {
+            leases.Dispose();
             _UpdatePendingInvoices.Dispose();
             _Cts.Cancel();
             return Task.WhenAny(_RunningTask.Task, Task.Delay(-1, cancellationToken));

BTCPayServer/Services/PoliciesSettings.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
+using Newtonsoft.Json;
 
 namespace BTCPayServer.Services
 {
@@ -11,5 +12,8 @@ namespace BTCPayServer.Services
         {
             get; set;
         }
+
+        [JsonProperty(DefaultValueHandling = DefaultValueHandling.Populate)]
+        public bool LockSubscription { get; set; }
     }
 }

BTCPayServer/Services/Rates/CoinAverageRateProvider.cs

@@ -17,61 +17,6 @@ namespace BTCPayServer.Services.Rates
     }
     public class CoinAverageRateProvider : IRateProvider
     {
-        public class RatesJson
-        {
-            public class RateJson
-            {
-                public string Code
-                {
-                    get; set;
-                }
-                public decimal Rate
-                {
-                    get; set;
-                }
-            }
-
-            [JsonProperty("rates")]
-            public JObject RatesInternal
-            {
-                get; set;
-            }
-            [JsonIgnore]
-            public List<RateJson> Rates
-            {
-                get; set;
-            }
-
-            [JsonIgnore]
-            public Dictionary<string, decimal> RatesByCurrency
-            {
-                get; set;
-            }
-
-            public decimal GetRate(string currency)
-            {
-                if (!RatesByCurrency.TryGetValue(currency.ToUpperInvariant(), out decimal currUSD))
-                    throw new RateUnavailableException(currency);
-
-                if (!RatesByCurrency.TryGetValue("BTC", out decimal btcUSD))
-                    throw new RateUnavailableException(currency);
-
-                return currUSD / btcUSD;
-            }
-            public void CalculateDictionary()
-            {
-                RatesByCurrency = new Dictionary<string, decimal>();
-                Rates = new List<RateJson>();
-                foreach (var rate in RatesInternal.OfType<JProperty>())
-                {
-                    var rateJson = new RateJson();
-                    rateJson.Code = rate.Name;
-                    rateJson.Rate = rate.Value["rate"].Value<decimal>();
-                    RatesByCurrency.Add(rate.Name, rateJson.Rate);
-                    Rates.Add(rateJson);
-                }
-            }
-        }
         static HttpClient _Client = new HttpClient();
 
         public string Market
@@ -80,13 +25,20 @@ namespace BTCPayServer.Services.Rates
         } = "global";
         public async Task<decimal> GetRateAsync(string currency)
         {
-            RatesJson rates = await GetRatesCore();
-            return rates.GetRate(currency);
+            var rates = await GetRatesCore();
+            return GetRate(rates, currency);
         }
 
-        private async Task<RatesJson> GetRatesCore()
+        private decimal GetRate(Dictionary<string, decimal> rates, string currency)
         {
-            var resp = await _Client.GetAsync("https://apiv2.bitcoinaverage.com/constants/exchangerates/" + Market);
+            if (rates.TryGetValue(currency, out decimal result))
+                return result;
+            throw new RateUnavailableException(currency);
+        }
+
+        private async Task<Dictionary<string, decimal>> GetRatesCore()
+        {
+            var resp = await _Client.GetAsync($"https://apiv2.bitcoinaverage.com/indices/{Market}/ticker/short");
             using (resp)
             {
 
@@ -97,19 +49,25 @@ namespace BTCPayServer.Services.Rates
                 if ((int)resp.StatusCode == 403)
                     throw new CoinAverageException("Unauthorized access to the API, premium plan needed");
                 resp.EnsureSuccessStatusCode();
-                var rates = JsonConvert.DeserializeObject<RatesJson>(await resp.Content.ReadAsStringAsync());
-                rates.CalculateDictionary();
-                return rates;
+                var rates = JObject.Parse(await resp.Content.ReadAsStringAsync());
+                return rates.Properties()
+                              .Where(p => p.Name.StartsWith("BTC", StringComparison.OrdinalIgnoreCase))
+                              .ToDictionary(p => p.Name.Substring(3, 3), p => ToDecimal(p.Value["last"]));
             }
         }
 
+        private decimal ToDecimal(JToken token)
+        {
+            return decimal.Parse(token.Value<string>(), System.Globalization.NumberStyles.AllowExponent | System.Globalization.NumberStyles.AllowDecimalPoint);
+        }
+
         public async Task<ICollection<Rate>> GetRatesAsync()
         {
-            RatesJson rates = await GetRatesCore();
-            return rates.Rates.Select(o => new Rate()
+            var rates = await GetRatesCore();
+            return rates.Select(o => new Rate()
             {
-                Currency = o.Code,
-                Value = rates.GetRate(o.Code)
+                Currency = o.Key,
+                Value = o.Value
             }).ToList();
         }
     }

BTCPayServer/Services/Rates/CurrencyNameTable.cs

@@ -1,9 +1,11 @@
 using System;
+using NBitcoin;
 using System.Collections.Generic;
 using System.IO;
 using System.Reflection;
 using System.Linq;
 using System.Text;
+using System.Globalization;
 
 namespace BTCPayServer.Services.Rates
 {
@@ -37,6 +39,41 @@ namespace BTCPayServer.Services.Rates
             _Currencies = LoadCurrency().ToDictionary(k => k.Code);
         }
 
+        static Dictionary<string, IFormatProvider> _CurrencyProviders = new Dictionary<string, IFormatProvider>();
+        public IFormatProvider GetCurrencyProvider(string currency)
+        {
+            lock (_CurrencyProviders)
+            {
+                if (_CurrencyProviders.Count == 0)
+                {
+                    foreach (var culture in CultureInfo.GetCultures(CultureTypes.AllCultures).Where(c => !c.IsNeutralCulture))
+                    {
+                        try
+                        {
+                            _CurrencyProviders.TryAdd(new RegionInfo(culture.LCID).ISOCurrencySymbol, culture);
+                        }
+                        catch { }
+                    }
+                    AddCurrency(_CurrencyProviders, "BTC", 8, "BTC");
+                }
+                return _CurrencyProviders.TryGet(currency);
+            }
+        }
+
+        private void AddCurrency(Dictionary<string, IFormatProvider> currencyProviders, string code, int divisibility, string symbol)
+        {
+            var culture = new CultureInfo("en-US");
+            var number = new NumberFormatInfo();
+            number.CurrencyDecimalDigits = divisibility;
+            number.CurrencySymbol = symbol;
+            number.CurrencyDecimalSeparator = culture.NumberFormat.CurrencyDecimalSeparator;
+            number.CurrencyGroupSeparator = culture.NumberFormat.CurrencyGroupSeparator;
+            number.CurrencyGroupSizes = culture.NumberFormat.CurrencyGroupSizes;
+            number.CurrencyNegativePattern = 8;
+            number.CurrencyPositivePattern = 3;
+            number.NegativeSign = culture.NumberFormat.NegativeSign;
+            currencyProviders.TryAdd(code, number);
+        }
 
         Dictionary<string, CurrencyData> _Currencies;
 

BTCPayServer/Services/Rates/FallbackRateProvider.cs

@@ -0,0 +1,43 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace BTCPayServer.Services.Rates
+{
+    public class FallbackRateProvider : IRateProvider
+    {
+        IRateProvider[] _Providers;
+        public FallbackRateProvider(IRateProvider[] providers)
+        {
+            if (providers == null)
+                throw new ArgumentNullException(nameof(providers));
+            _Providers = providers;
+        }
+        public async Task<decimal> GetRateAsync(string currency)
+        {
+            foreach(var p in _Providers)
+            {
+                try
+                {
+                    return await p.GetRateAsync(currency).ConfigureAwait(false);
+                }
+                catch { }
+            }
+            throw new RateUnavailableException(currency);
+        }
+
+        public async Task<ICollection<Rate>> GetRatesAsync()
+        {
+            foreach (var p in _Providers)
+            {
+                try
+                {
+                    return await p.GetRatesAsync().ConfigureAwait(false);
+                }
+                catch { }
+            }
+            throw new RateUnavailableException("ALL");
+        }
+    }
+}

BTCPayServer/Services/Stores/StoreRepository.cs

@@ -76,8 +76,8 @@ namespace BTCPayServer.Services.Stores
                     ApplicationUserId = ownerId,
                     Role = "Owner"
                 };
-                await ctx.AddAsync(store).ConfigureAwait(false);
-                await ctx.AddAsync(userStore).ConfigureAwait(false);
+                ctx.Add(store);
+                ctx.Add(userStore);
                 await ctx.SaveChangesAsync().ConfigureAwait(false);
                 return store;
             }

BTCPayServer/TransactionComparer.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using NBitcoin;
+
+namespace BTCPayServer
+{
+    public class TransactionComparer : IEqualityComparer<Transaction>
+    {
+
+        private static TransactionComparer _Instance = new TransactionComparer();
+        public static TransactionComparer Instance
+        {
+            get
+            {
+                return _Instance;
+            }
+        }
+        public bool Equals(Transaction x, Transaction y)
+        {
+            return x.GetHash() == y.GetHash();
+        }
+
+        public int GetHashCode(Transaction obj)
+        {
+            return obj.GetHash().GetHashCode();
+        }
+    }
+}

BTCPayServer/Validations/DerivationStrategyValidatorAttribute.cs

@@ -1,32 +0,0 @@
-using NBitcoin;
-using NBXplorer.DerivationStrategy;
-using System;
-using System.Collections.Generic;
-using System.ComponentModel.DataAnnotations;
-using System.Text;
-
-namespace BTCPayServer.Validations
-{
-    public class DerivationStrategyValidatorAttribute : ValidationAttribute
-    {
-        protected override ValidationResult IsValid(object value, ValidationContext validationContext)
-        {
-            if (value == null)
-            {
-                return ValidationResult.Success;
-            }
-            var network = (Network)validationContext.GetService(typeof(Network));
-            if (network == null)
-                return new ValidationResult("No Network specified");
-            try
-            {
-                new DerivationStrategyFactory(network).Parse((string)value);
-                return ValidationResult.Success;
-            }
-            catch (Exception ex)
-            {
-                return new ValidationResult(ex.Message);
-            }
-        }
-    }
-}

BTCPayServer/Views/Home/Home.cshtml

@@ -54,8 +54,15 @@
 
 <div class="call-to-action bg-dark">
     <div class="container text-center">
-        <h2>You don't want to depend on us? Self-Host it yourself!</h2>
-        <a style="background-color: #fff;color: #222;display:inline-block;text-align: center;white-space: nowrap;vertical-align: middle;user-select: none;line-height: 1.25;font-size: 1rem;text-decoration:none;font-weight: 700;    text-transform: uppercase;border: none;border-radius: 300px;padding: 15px 30px;" href="https://github.com/btcpayserver/btcpayserver-doc">Read The Doc!</a>
+        <h2>Video tutorials</h2>
+        <div class="row">
+            <div class="col-md-6 text-center">
+                <iframe width="560" height="315" src="https://www.youtube.com/embed/xh3Eac66qc4" frameborder="0" allowfullscreen></iframe>
+            </div>
+            <div class="col-md-6 text-center">
+                <iframe width="560" height="315" src="https://www.youtube.com/embed/Xo_vApXTZBU" frameborder="0" allowfullscreen></iframe>
+            </div>
+        </div>
     </div>
 </div>
 
@@ -115,10 +122,18 @@
         </div>
         <div class="row">
             <div class="col-lg-4 ml-auto text-center">
-                <a href="http://13.79.159.103:3000/">
+                <a href="http://52.191.212.129:3000/">
                     <img src="~/img/slack.png" height="100" />
                 </a>
-                <p><a href="http://13.79.159.103:3000/">On Slack</a></p>
+                <p><a href="http://52.191.212.129:3000/">On Slack</a></p>
+            </div>
+            <div class="col-lg-4 mr-auto text-center">
+                <a href="https://twitter.com/BtcpayServer">
+                    <img src="~/img/twitter.png" height="100" />
+                </a>
+                <p>
+                    <a href="https://twitter.com/BtcpayServer">On Twitter</a>
+                </p>
             </div>
             <div class="col-lg-4 mr-auto text-center">
                 <a href="https://github.com/btcpayserver/btcpayserver">

BTCPayServer/Views/Invoice/Checkout.cshtml

@@ -10,7 +10,7 @@
     <!-- base href="/" -->
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
-    <title>BitPay Invoice</title>
+    <title>BTCPay Invoice</title>
 
     <environment include="Development">
         <link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.css" />
@@ -26,7 +26,7 @@
     <script src="https://code.jquery.com/jquery-3.2.1.min.js"
             crossorigin="anonymous"></script>
     <script type="text/javascript">
-		@Model.ToSrvModel()
+		@Model.ToJSVariableModel("srvModel")
     </script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/1.7.1/clipboard.min.js"></script>
     <script src="~/js/vue.js" type="text/javascript" defer="defer"></script>

BTCPayServer/Views/Invoice/CreateInvoice.cshtml

@@ -19,6 +19,11 @@
                         <input asp-for="Amount" class="form-control" />
                         <span asp-validation-for="Amount" class="text-danger"></span>
                     </div>
+                    <div class="form-group">
+                        <label asp-for="Currency" class="control-label"></label>*
+                        <input asp-for="Currency" class="form-control" />
+                        <span asp-validation-for="Currency" class="text-danger"></span>
+                    </div>
                     <div class="form-group">
                         <label asp-for="OrderId" class="control-label"></label>
                         <input asp-for="OrderId" class="form-control" />

BTCPayServer/Views/Invoice/ListInvoices.cshtml

@@ -16,13 +16,21 @@
             <div class="col-lg-12 text-center">
                 <h2 class="section-heading">@ViewData["Title"]</h2>
                 <hr class="primary">
-                <p>Create, search or pay an invoice.</p>
+                <p>Create, search or pay an invoice. (<a href="#help" data-toggle="collapse">Help</a>)</p>
+                <div id="help" class="collapse text-left">
+                    <p>You can search for invoice Id, deposit address, price, order id, store id, any buyer information and any product information.</br>
+                    You can also apply filters to your search by searching for `filtername:value`, here is a list of supported filters</p>
+                    <ul>
+                        <li><b>storeid:id</b> for filtering a specific store</li>
+                        <li><b>status:(expired|invalid|complete|confirmed|paid|new)</b> for filtering a specific status</li>
+                    </ul>
+                </div>
                 <div class="form-group">
                     <form asp-action="SearchInvoice" method="post">
                         <input asp-for="SearchTerm" class="form-control" />
                         <input type="hidden" asp-for="Count" />
                         <span asp-validation-for="SearchTerm" class="text-danger"></span>
-                        <button type="button" class="btn btn-default" title="Search invoice">
+                        <button type="submit" class="btn btn-default" title="Search invoice">
                             <span class="glyphicon glyphicon-search"></span> Search
                         </button>
                     </form>
@@ -48,7 +56,23 @@
                         <tr>
                             <td>@invoice.Date</td>
                             <td>@invoice.InvoiceId</td>
-                            <td>@invoice.Status</td>
+                            @if(invoice.Status == "paid")
+                            {
+                                <td>
+                                    <div class="btn-group">
+                                        <a class="dropdown-toggle dropdown-toggle-split" style="cursor: pointer;" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+                                            @invoice.Status <span class="sr-only">Toggle Dropdown</span>
+                                        </a>
+                                        <div class="dropdown-menu pull-right">
+                                            <button class="dropdown-item small" data-toggle="modal" data-target="#myModal" onclick="$('#invoiceId').val('@invoice.InvoiceId')">Make Invalid</button>
+                                        </div>
+                                    </div>
+                                </td>
+                            }
+                            else
+                            {
+                                <td>@invoice.Status</td>
+                            }
                             <td>@invoice.AmountCurrency</td>
                             <td><a asp-action="Checkout" asp-route-invoiceId="@invoice.InvoiceId">Checkout</a> - <a asp-action="Invoice" asp-route-invoiceId="@invoice.InvoiceId">Details</a></td>
                         </tr>
@@ -59,20 +83,45 @@
                 @if(Model.Skip != 0)
                 {
                     <a href="@Url.Action("ListInvoices", new
-		{
-			searchTerm = Model.SearchTerm,
-			skip = Math.Max(0, Model.Skip - Model.Count),
-			count = Model.Count,
-		})"><<</a><span> - </span>
+                        {
+                            searchTerm = Model.SearchTerm,
+                            skip = Math.Max(0, Model.Skip - Model.Count),
+                            count = Model.Count,
+                        })"><<</a><span> - </span>
                 }
                 <a href="@Url.Action("ListInvoices", new
-		{
-			searchTerm = Model.SearchTerm,
-			skip = Model.Skip + Model.Count,
-			count = Model.Count,
-		})">>></a>
+                    {
+                        searchTerm = Model.SearchTerm,
+                        skip = Model.Skip + Model.Count,
+                        count = Model.Count,
+                    })">>></a>
             </span>
         </div>
 
     </div>
 </section>
+
+<!-- Modal -->
+<div id="myModal" class="modal fade" role="dialog">
+    <form method="post" action="/invoices/invalidatepaid">
+        <input id="invoiceId" name="invoiceId" type="hidden" />
+        <div class="modal-dialog">
+
+            <!-- Modal content-->
+            <div class="modal-content">
+                <div class="modal-header">
+                    <h4 class="modal-title">Set Invoice status to Invalid</h4>
+                    <button type="button" class="close" data-dismiss="modal">&times;</button>
+                </div>
+                <div class="modal-body">
+                    <p>Are you sure you want to invalidate this transaction? This action is NOT undoable!</p>
+                </div>
+                <div class="modal-footer">
+                    <button type="submit" class="btn btn-danger">Yes, make invoice Invalid</button>
+                    <button type="button" class="btn btn-default" data-dismiss="modal">Cancel</button>
+                </div>
+            </div>
+
+        </div>
+    </form>
+</div>

BTCPayServer/Views/Server/ListUsers.cshtml

@@ -14,6 +14,7 @@
         <tr>
             <th>Name</th>
             <th>Email</th>
+            <th>Actions</th>
         </tr>
     </thead>
     <tbody>
@@ -22,6 +23,7 @@
             <tr>
                 <td>@user.Name</td>
                 <td>@user.Email</td>
+                <td><a asp-action="DeleteUser" asp-route-userId="@user.Id">Remove</a></td>
             </tr>}
     </tbody>
 </table>

BTCPayServer/Views/Server/Policies.cshtml

@@ -19,6 +19,10 @@
                 <label asp-for="RequiresConfirmedEmail"></label>
                 <input asp-for="RequiresConfirmedEmail" type="checkbox" class="form-check-inline" />
             </div>
+            <div class="form-group">
+                <label asp-for="LockSubscription"></label>
+                <input asp-for="LockSubscription" type="checkbox" class="form-check-inline" />
+            </div>
             <button type="submit" class="btn btn-success" name="command" value="Save">Save</button>
         </form>
     </div>

BTCPayServer/Views/Shared/_Layout.cshtml

@@ -2,6 +2,19 @@
 @inject UserManager<ApplicationUser> UserManager
 @inject RoleManager<IdentityRole> RoleManager
 @inject BTCPayServer.Services.BTCPayServerEnvironment env
+@inject BTCPayServer.NBXplorerWaiterAccessor waiter
+
+@{
+    var waiterState = waiter.Instance.State;
+    var lastStatus = waiter.Instance.LastStatus;
+
+    var synching = waiterState == NBXplorerState.Synching &&
+        lastStatus != null &&
+        lastStatus.NodeBlocks.HasValue &&
+        lastStatus.NodeHeaders.HasValue &&
+        lastStatus.VerificationProgress.HasValue;
+    var verificationProgress = lastStatus != null && lastStatus.VerificationProgress.HasValue ? lastStatus.VerificationProgress.Value * 100 : 0.0;
+}
 
 <!DOCTYPE html>
 <html lang="en">
@@ -78,6 +91,63 @@
     </nav>
 
     @RenderBody()
+
+
+    @if(waiterState == NBXplorerState.NotConnected)
+    {
+        <!-- Modal -->
+        <div id="no-nbxplorer" class="modal fade" role="dialog">
+            <div class="modal-dialog">
+
+                <!-- Modal content-->
+                <div class="modal-content">
+                    <div class="modal-header">
+                        <h4 class="modal-title">NBXplorer is not running</h4>
+                        <button type="button" class="close" data-dismiss="modal">&times;</button>
+                    </div>
+                    <div class="modal-body">
+                        <p>NBXplorer is not running, BTCPay Server will not be functional.</p>
+                    </div>
+                    <div class="modal-footer">
+                        <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
+                    </div>
+                </div>
+
+            </div>
+        </div>
+    }
+
+    @if(synching)
+    {
+        <!-- Modal -->
+        <div id="synching-modal" class="modal fade" role="dialog">
+            <div class="modal-dialog">
+
+                <!-- Modal content-->
+                <div class="modal-content">
+                    <div class="modal-header">
+                        <h4 class="modal-title">Bitcoin Core node is synching...</h4>
+                        <button type="button" class="close" data-dismiss="modal">&times;</button>
+                    </div>
+                    <div class="modal-body">
+                        <p>Bitcoin Core is synching (Chain height: @lastStatus.NodeHeaders, Block height: @lastStatus.NodeBlocks)</p>
+                        <p>BTCPay Server will not work correctly until it is over.</p>
+                        <div class="progress">
+                            <div class="progress-bar" role="progressbar" aria-valuenow="@((int)verificationProgress)"
+                                 aria-valuemin="0" aria-valuemax="100" style="width:@((int)verificationProgress)%">
+                                @((int)verificationProgress)%
+                            </div>
+                        </div>
+                    </div>
+                    <div class="modal-footer">
+                        <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
+                    </div>
+                </div>
+
+            </div>
+        </div>
+    }
+
     <footer class="bg-dark">
         <div class="container text-right"><span style="font-size:8px;">@env.ToString()</span></div>
     </footer>
@@ -95,6 +165,23 @@
     <!-- Custom scripts for this template -->
     <script src="~/js/creative.js"></script>
 
+    @if(waiterState == NBXplorerState.NotConnected)
+    {
+        <script type="text/javascript">
+            $(function () {
+                $("#no-nbxplorer").modal();
+            });
+        </script>
+    }
+    @if(synching)
+    {
+        <script type="text/javascript">
+            $(function () {
+                $("#synching-modal").modal();
+            });
+        </script>
+    }
+
     @RenderSection("Scripts", required: false)
 </body>
 

BTCPayServer/Views/Stores/UpdateStore.cshtml

@@ -16,6 +16,15 @@
 <div class="row">
     <div class="col-md-6">
         <form method="post">
+            <div class="form-group">
+                <label asp-for="Id"></label>
+                <input asp-for="Id" readonly class="form-control" />
+            </div>
+            <div class="form-group">
+                <label asp-for="StoreName"></label>
+                <input asp-for="StoreName" class="form-control" />
+                <span asp-validation-for="StoreName" class="text-danger"></span>
+            </div>
             <div class="form-group">
                 <label asp-for="StoreName"></label>
                 <input asp-for="StoreName" class="form-control" />
@@ -30,6 +39,11 @@
                 <label asp-for="NetworkFee"></label>
                 <input asp-for="NetworkFee" type="checkbox" class="form-check" />
             </div>
+            <div class="form-group">
+                <label asp-for="MonitoringExpiration"></label>
+                <input asp-for="MonitoringExpiration" class="form-control" />
+                <span asp-validation-for="MonitoringExpiration" class="text-danger"></span>
+            </div>
             <div class="form-group">
                 <label asp-for="SpeedPolicy"></label>
                 <select asp-for="SpeedPolicy" class="form-control">
@@ -42,72 +56,77 @@
             <div class="form-group">
                 <h5>Derivation Scheme</h5>
                 @if(Model.AddressSamples.Count == 0)
-                {
-                    <span>The DerivationScheme represents the destination of the funds received by your invoice. It is generated by your wallet software. Please, verify that you are generating the right addresses by clicking on 'Check ExtPubKey'</span>
-                }
+        {
+            <span>The DerivationScheme represents the destination of the funds received by your invoice. It is generated by your wallet software. Please, verify that you are generating the right addresses by clicking on 'Check ExtPubKey'</span>
+}
             </div>
             <div class="form-group">
                 <input asp-for="DerivationScheme" class="form-control" />
                 <span asp-validation-for="DerivationScheme" class="text-danger"></span>
             </div>
+            <div class="form-group">
+                <label asp-for="DerivationSchemeFormat"></label>
+                <select asp-for="DerivationSchemeFormat" asp-items="Model.DerivationSchemeFormats" class="form-control"></select>
+            </div>
             <div class="form-group">
                 @if(Model.AddressSamples.Count == 0)
-                {
-                    <table class="table">
-                        <thead class="thead-inverse">
-                            <tr>
-                                <th>Address type</th>
-                                <th>Example</th>
-                            </tr>
-                        </thead>
-                        <tbody>
-                            <tr>
-                                <td>P2WPKH</td>
-                                <td>xpub</td>
-                            </tr>
-                            <tr>
-                                <td>P2SH-P2WPKH</td>
-                                <td>xpub-[p2sh]</td>
-                            </tr>
-                            <tr>
-                                <td>P2PKH</td>
-                                <td>xpub-[legacy]</td>
-                            </tr>
-                            <tr>
-                                <td>Multi-sig P2WSH</td>
-                                <td>2-of-xpub1-xpub2</td>
-                            </tr>
-                            <tr>
-                                <td>Multi-sig P2SH-P2WSH</td>
-                                <td>2-of-xpub1-xpub2-[p2sh]</td>
-                            </tr>
-                            <tr>
-                                <td>Multi-sig P2SH</td>
-                                <td>2-of-xpub1-xpub2-[legacy]</td>
-                            </tr>
-                        </tbody>
-                    </table>
-                }
-                else
-                {
-                    <table class="table">
-                        <thead class="thead-inverse">
-                            <tr>
-                                <th>Key path</th>
-                                <th>Address</th>
-                            </tr>
-                        </thead>
-                        <tbody>
-                            @foreach(var sample in Model.AddressSamples)
-                            {
-                                <tr>
-                                    <td>@sample.KeyPath</td>
-                                    <td>@sample.Address</td>
-                                </tr>
-                            }
-                        </tbody>
-                    </table>
-                }
+        {
+                    <span>BTCPay format memo</span>
+            <table class="table">
+                <thead class="thead-inverse">
+                    <tr>
+                        <th>Address type</th>
+                        <th>Example</th>
+                    </tr>
+                </thead>
+                <tbody>
+                    <tr>
+                        <td>P2WPKH</td>
+                        <td>xpub</td>
+                    </tr>
+                    <tr>
+                        <td>P2SH-P2WPKH</td>
+                        <td>xpub-[p2sh]</td>
+                    </tr>
+                    <tr>
+                        <td>P2PKH</td>
+                        <td>xpub-[legacy]</td>
+                    </tr>
+                    <tr>
+                        <td>Multi-sig P2WSH</td>
+                        <td>2-of-xpub1-xpub2</td>
+                    </tr>
+                    <tr>
+                        <td>Multi-sig P2SH-P2WSH</td>
+                        <td>2-of-xpub1-xpub2-[p2sh]</td>
+                    </tr>
+                    <tr>
+                        <td>Multi-sig P2SH</td>
+                        <td>2-of-xpub1-xpub2-[legacy]</td>
+                    </tr>
+                </tbody>
+            </table>
+}
+else
+{
+        <table class="table">
+            <thead class="thead-inverse">
+                <tr>
+                    <th>Key path</th>
+                    <th>Address</th>
+                </tr>
+            </thead>
+            <tbody>
+                @foreach(var sample in Model.AddressSamples)
+        {
+            <tr>
+                <td>@sample.KeyPath</td>
+                <td>@sample.Address</td>
+            </tr>
+}
+            </tbody>
+        </table>
+}
             </div>
             <button name="command" type="submit" class="btn btn-success" value="Save">Save</button>
             <button name="command" type="submit" class="btn btn-default" value="Check">Check ExtPubKey</button>

BTCPayServer/wwwroot/js/core.js

@@ -191,7 +191,7 @@ function onDataCallback(jsonData) {
     checkoutCtrl.srvModel = jsonData;
 }
 
-var watcher = setInterval(function () {
+function fetchStatus() {
     var path = srvModel.serverUrl + "/i/" + srvModel.invoiceId + "/status";
     $.ajax({
         url: path,
@@ -201,6 +201,27 @@ var watcher = setInterval(function () {
     }).fail(function (jqXHR, textStatus, errorThrown) {
 
     });
+}
+
+var supportsWebSockets = 'WebSocket' in window && window.WebSocket.CLOSING === 2;
+if (supportsWebSockets) {
+    var path = srvModel.serverUrl + "/i/" + srvModel.invoiceId + "/status/ws";
+    path = path.replace("https://", "wss://");
+    path = path.replace("http://", "ws://");
+    try {
+        var socket = new WebSocket(path);
+        socket.onmessage = function (e) {
+            fetchStatus();
+        };
+    }
+    catch
+    {
+        console.error("Error while connecting to websocket for invoice notifictions");
+    }
+}
+
+var watcher = setInterval(function () {
+    fetchStatus();
 }, 2000);
 
 $(".menu__item").click(function () {

Dockerfile

@@ -6,7 +6,7 @@ RUN dotnet restore
 COPY BTCPayServer/. .
 RUN dotnet publish --output /app/ --configuration Release
 
-FROM microsoft/aspnetcore:2.0.0
+FROM microsoft/aspnetcore:2.0.3
 WORKDIR /app
 
 RUN mkdir /datadir
@@ -14,4 +14,4 @@ ENV BTCPAY_DATADIR=/datadir
 VOLUME /datadir
 
 COPY --from=builder "/app" .
-ENTRYPOINT ["dotnet", "BTCPayServer.dll"]
+ENTRYPOINT ["dotnet", "BTCPayServer.dll"]

btcpayserver.sln

@@ -1,7 +1,7 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 15
-VisualStudioVersion = 15.0.26730.16
+VisualStudioVersion = 15.0.27004.2005
 MinimumVisualStudioVersion = 15.0.26124.0
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BTCPayServer", "BTCPayServer\BTCPayServer.csproj", "{949A0870-8D8C-4DE5-8845-DDD560489177}"
 EndProject