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net/http/httptest: wait for user ConnState hooks

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Ensure that user ConnState callbacks have completed before returning
from (*httptest.Server).Close.

Fixes: #37510
Fixes: #37505
Fixes: #45237
Change-Id: I8fe7baa089fbe4f3836bf6ae9767c7b1270d1331
Reviewed-on: https://go-review.googlesource.com/c/go/+/304829
Trust: Damien Neil <dneil@google.com>
Run-TryBot: Damien Neil <dneil@google.com>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
This commit is contained in:
Damien Neil 2021-03-25 11:11:03 -07:00
parent 7ce361737f
commit 5cec8b85e5
1 changed files with 7 additions and 0 deletions
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7
src/net/http/httptest/server.go
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@ -316,6 +316,13 @@ func (s *Server) wrap() {
s.Config.ConnState = func(c net.Conn, cs http.ConnState) {
s.mu.Lock()
defer s.mu.Unlock()
// Keep Close from returning until the user's ConnState hook
// (if any) finishes. Without this, the call to forgetConn
// below might send the count to 0 before we run the hook.
s.wg.Add(1)
defer s.wg.Done()
switch cs {
case http.StateNew:
s.wg.Add(1)