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chore: refactor TestServer_X11 to use inproc networking#18564
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base:spike/testutil-in-proc-net
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spikecurtis commentedJun 25, 2025 • edited
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Warning This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stackon Graphite.
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1e438a6 tob39371fCompareb60589d to212e2a5Compare| // It is intended mainly for testing; production code uses the default | ||
| // implementation backed by the operating system networking stack. | ||
| type X11Network interface { | ||
| Listen(network, address string) (net.Listener, error) |
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Suggestion: It'd be nice to keep this as aListen(ctx, ...) as previously via ListenConfig.
| if originPort == 0 { | ||
| p := X11StartPort + session.display | ||
| if p > math.MaxUint32 { | ||
| panic("overflow") |
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I don't think we should panic here as that risks killing the whole agent in the unlikely event that we don't have aTCPConn. Logging and closing the connection seems more appropriate especially considering the comment above "or non-TCP connections" suggesting it's not only for tests.
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relates to#18263
Refactors the x11Forwarder to accept a networking
interfacethat we can fake out for testing. This isolates the unit tests from other processes listening in the port range used by X11 forwarding. This will become extremely important in up-stack PRs where we listen on every port in the range and need to control which ports have conflicts.