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Bryan C. Mills 33d4ad0176 internal/jsonrpc2_v2: eliminate a potential Accept/Dial race in TestIdleTimeout
The only explanation I can think of for the failure in
https://go.dev/issue/49387#issuecomment-1303979877 is that maybe the
idle timeout started as soon as conn1 was closed, without waiting for
conn2 to be closed. That might be possible if the connection returned
by Dial was still in the server's accept queue, but never actually
accepted.

To eliminate that possibility, we can send an RPC on that connection
and wait for a response, as we already do with conn1. Since the conn1
RPC succeeded, we know that the connection is non-idle, conn2 should
be accepted, and the request on conn2 should succeed unconditionally.

Fixes golang/go#49387 (hopefully for real this time).

Change-Id: Ie3e74f91d322223d82c000fdf1f3a0ed08afd20d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/448096
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
2022-11-09 14:00:02 +00:00
internal internal/jsonrpc2_v2: eliminate a potential Accept/Dial race in TestIdleTimeout 2022-11-09 14:00:02 +00:00