implement limit connections #1527
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Description
This is an implementation of the MaxConcurrentRequest for the ssh server.
The implementation is a copy/paste of https://cs.opensource.google/go/x/net/+/refs/tags/v0.34.0:netutil/listen.go with an additional timeout.
In fact the LimitListener hangs forever the
Accept()until a seat is made available, making it hard to test and also counter intuitive, because we want to close connection when we reach the limit.The error from the SSH client is:
Note
This is the first simple implementation until we get a better way of doing it by interacting with the gliderlab/ssh server. I am working on a issue + pr to make it possible.
Engineering checklist
Test instructions