(Duplicate for CI) Propagate half-closes correctly in forward #165
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Before, the following would not work as you would expect: ```go // # One terminal // $ ncat --recv-only -l 9090 // ngrok-go code fwd, err := sess.ListenAndForward( ctx, "127.0.0.1:9090", config.TCPEndpoint(), ) // fwd.URL() is 0.tcp.jp.ngrok.io:14517 for this example // another terminal // $ ncat --send-only 0.tcp.jp.ngrok.io 14517 < hello-world.txt ``` What we would expect from the above would be for the send side to send "hello world" and exit, and then the recv side to print "hello world" and also exit. This is what happens if you do `ncat --send-only localhost 9090` instead of copying through the ngrok tcp tunnel. Before this change, when copying through ngrok the recv side would not exit because the 'Close' of the connection did not get propagated through the 'join'. I've also added a unit test showing this. Thank you to @abakum for originally noticing this issue and offering a fix over in #137. In the hopes of landing this more quickly, I've written a new version, derived from the internal ngrok agent's join code, which should thus be easier to review etc. To try and give credit correctly, I've maintained the original commits from #137 as well.
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Passed CI, cool, closing so I can go back and merge the original. |
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Duplicate of #163, but as a branch on this repo, to force the build-and-test job to run once.
This is the same code, so if it passes here, the intent is to close this PR and merge the original.
Due to using an authtoken secret, we need a local branch + pull request in order to actually run the CI step, and while I'm fairly confident this should pass CI, it's worth verifying properly before merging, even if juggling branches like this is a bit inconvenient.