This PR replaces the use of the **container** ID with the
**devcontainer** ID. This is a breaking change. This allows rebuilding a
devcontainer when there is no valid container ID.
This change introduces a refactor of the devcontainers recreation logic
which is now handled asynchronously rather than being request scoped.
The response was consequently changed from "No Content" to "Accepted" to
reflect this.
A new `Status` field was introduced to the devcontainer struct which
replaces `Running` (bool). This reflects that the devcontainer can now
be in various states (starting, running, stopped or errored).
The status field also protects against multiple concurrent recrations,
as long as they are initiated via the API.
Updates #16424
Closes https://github.com/coder/vscode-coder/issues/447
Closes https://github.com/coder/jetbrains-coder/issues/543
Closes https://github.com/coder/coder-jetbrains-toolbox/issues/21
This PR adds Coder Connect support to `coder ssh --stdio`.
When connecting to a workspace, if `--force-new-tunnel` is not passed, the CLI will first do a DNS lookup for `<agent>.<workspace>.<owner>.<hostname-suffix>`. If an IP address is returned, and it's within the Coder service prefix, the CLI will not create a new tailnet connection to the workspace, and instead dial the SSH server running on port 22 on the workspace directly over TCP.
This allows IDE extensions to use the Coder Connect tunnel, without requiring any modifications to the extensions themselves.
Additionally, `using_coder_connect` is added to the `sshNetworkStats` file, which the VS Code extension (and maybe Jetbrains?) will be able to read, and indicate to the user that they are using Coder Connect.
One advantage of this approach is that running `coder ssh --stdio` on an offline workspace with Coder Connect enabled will have the CLI wait for the workspace to build, the agent to connect (and optionally, for the startup scripts to finish), before finally connecting using the Coder Connect tunnel.
As a result, `coder ssh --stdio` has the overhead of looking up the workspace and agent, and checking if they are running. On my device, this meant `coder ssh --stdio <workspace>` was approximately a second slower than just connecting to the workspace directly using `ssh <workspace>.coder` (I would assume anyone serious about their Coder Connect usage would know to just do the latter anyway).
To ensure this doesn't come at a significant performance cost, I've also benchmarked this PR.
<details>
<summary>Benchmark</summary>
## Methodology
All tests were completed on `dev.coder.com`, where a Linux workspace running in AWS `us-west1` was created.
The machine running Coder Desktop (the 'client') was a Windows VM running in the same AWS region and VPC as the workspace.
To test the performance of specifically the SSH connection, a port was forwarded between the client and workspace using:
```
ssh -p 22 -L7001:localhost:7001 <host>
```
where `host` was either an alias for an SSH ProxyCommand that called `coder ssh`, or a Coder Connect hostname.
For latency, [`tcping`](https://www.elifulkerson.com/projects/tcping.php) was used against the forwarded port:
```
tcping -n 100 localhost 7001
```
For throughput, [`iperf3`](https://iperf.fr/iperf-download.php) was used:
```
iperf3 -c localhost -p 7001
```
where an `iperf3` server was running on the workspace on port 7001.
## Test Cases
### Testcase 1: `coder ssh` `ProxyCommand` that bicopies from Coder Connect
This case tests the implementation in this PR, such that we can write a config like:
```
Host codercliconnect
ProxyCommand /path/to/coder ssh --stdio workspace
```
With Coder Connect enabled, `ssh -p 22 -L7001:localhost:7001 codercliconnect` will use the Coder Connect tunnel. The results were as follows:
**Throughput, 10 tests, back to back:**
- Average throughput across all tests: 788.20 Mbits/sec
- Minimum average throughput: 731 Mbits/sec
- Maximum average throughput: 871 Mbits/sec
- Standard Deviation: 38.88 Mbits/sec
**Latency, 100 RTTs:**
- Average: 0.369ms
- Minimum: 0.290ms
- Maximum: 0.473ms
### Testcase 2: `ssh` dialing Coder Connect directly without a `ProxyCommand`
This is what we assume to be the 'best' way to use Coder Connect
**Throughput, 10 tests, back to back:**
- Average throughput across all tests: 789.50 Mbits/sec
- Minimum average throughput: 708 Mbits/sec
- Maximum average throughput: 839 Mbits/sec
- Standard Deviation: 39.98 Mbits/sec
**Latency, 100 RTTs:**
- Average: 0.369ms
- Minimum: 0.267ms
- Maximum: 0.440ms
### Testcase 3: `coder ssh` `ProxyCommand` that creates its own Tailnet connection in-process
This is what normally happens when you run `coder ssh`:
**Throughput, 10 tests, back to back:**
- Average throughput across all tests: 610.20 Mbits/sec
- Minimum average throughput: 569 Mbits/sec
- Maximum average throughput: 664 Mbits/sec
- Standard Deviation: 27.29 Mbits/sec
**Latency, 100 RTTs:**
- Average: 0.335ms
- Minimum: 0.262ms
- Maximum: 0.452ms
## Analysis
Performing a two-tailed, unpaired t-test against the throughput of testcases 1 and 2, we find a P value of `0.9450`. This suggests the difference between the data sets is not statistically significant. In other words, there is a 94.5% chance that the difference between the data sets is due to chance.
## Conclusion
From the t-test, and by comparison to the status quo (regular `coder ssh`, which uses gvisor, and is noticeably slower), I think it's safe to say any impact on throughput or latency by the `ProxyCommand` performing a bicopy against Coder Connect is negligible. Users are very much unlikely to run into performance issues as a result of using Coder Connect via `coder ssh`, as implemented in this PR.
Less scientifically, I ran these same tests on my home network with my Sydney workspace, and both throughput and latency were consistent across testcases 1 and 2.
</details>
- Update go.mod to use Go 1.24.1
- Update GitHub Actions setup-go action to use Go 1.24.1
- Fix linting issues with golangci-lint by:
- Updating to golangci-lint v1.57.1 (more compatible with Go 1.24.1)
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
---------
Co-authored-by: Claude <claude@anthropic.com>
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Fixes: https://github.com/coder/internal/issues/377
Added an additional SSH listener on port 22, so the agent now listens on both, port one and port 22.
---
Change-Id: Ifd986b260f8ac317e37d65111cd4e0bd1dc38af8
Signed-off-by: Thomas Kosiewski <tk@coder.com>
Builds on top of https://github.com/coder/coder/pull/16623/ and wires up
the ReconnectingPTY server. This does nothing to wire up the web
terminal yet but the added test demonstrates the functionality working.
Other changes:
* Refactors and moves the `SystemEnvInfo` interface to the
`agent/usershell` package to address follow-up from
https://github.com/coder/coder/pull/16623#discussion_r1967580249
* Marks `usershellinfo.Get` as deprecated. Consumers should use the
`EnvInfoer` interface instead.
---------
Co-authored-by: Mathias Fredriksson <mafredri@gmail.com>
Co-authored-by: Danny Kopping <danny@coder.com>
Fixes https://github.com/coder/coder/issues/16268
- Adds `/api/v2/workspaceagents/:id/containers` coderd endpoint that allows listing containers
visible to the agent. Optional filtering by labels is supported.
- Adds go tools to the `coder-dylib` CI step so we can generate mocks if needed
re: #14715
This PR introduces the Coder service prefix: `fd60:627a:a42b::/48` and refactors our existing code as calling the Tailscale service prefix explicitly (rather than implicitly).
Removes the unused `Addresses` agent option. All clients today assume they can compute the Agent's IP address based on its UUID, so an agent started with a custom address would break things.
First PR to address #14244.
Adds common potential reasons as to why a direct connection to the workspace agent couldn't be established to `coder ping`:
- If the Coder deployment administrator has blocked direction connections (`CODER_BLOCK_DIRECT`).
- If the client has no STUN servers within it's DERP map.
- If the client or agent appears to be behind a hard NAT, as per Tailscale `netInfo.MappingVariesByDestIP`
Also adds a warning if the client or agent has a network interface below the 'safe' MTU for tailnet. This warning is always displayed at the end of a `coder ping`.
Currently, importing `codersdk` just to interact with the API requires
importing tailscale, which causes builds to fail unless manually using
our fork.
