net/http: TestServerGracefulClose failures with connection reset by peer

[gopherbot]

#!watchflakes
post <- pkg == "net/http" && test == "TestServerGracefulClose" && `connection reset by peer`

Issue created automatically to collect these failures.

Example (log):

--- FAIL: TestServerGracefulClose (0.00s)
    --- FAIL: TestServerGracefulClose/h1 (4.24s)
        serve_test.go:3153: ReadLine: read tcp 127.0.0.1:33546->127.0.0.1:33545: read: connection reset by peer

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "net/http" && test == "TestServerGracefulClose"

2022-12-02 20:16 freebsd-riscv64-unmatched go@5efa4dab net/http.TestServerGracefulClose (log)

--- FAIL: TestServerGracefulClose (0.00s)
    --- FAIL: TestServerGracefulClose/h1 (4.24s)
        serve_test.go:3153: ReadLine: read tcp 127.0.0.1:33546->127.0.0.1:33545: read: connection reset by peer

— watchflakes

[bcmills]

(attn @neild)

[bcmills]

See also #36178.

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "net/http" && test == "TestServerGracefulClose" && `connection reset by peer`

2022-12-05 16:41 freebsd-arm64-dmgk go@ad55b878 net/http.TestServerGracefulClose (log)

--- FAIL: TestServerGracefulClose (0.00s)
    --- FAIL: TestServerGracefulClose/h1 (4.89s)
        serve_test.go:3153: ReadLine: read tcp 127.0.0.1:29763->127.0.0.1:29762: read: connection reset by peer

2022-12-19 21:44 darwin-amd64-12_0 go@7683c71a net/http.TestServerGracefulClose (log)

2022/12/19 20:58:18 httptest.Server blocked in Close after 5 seconds, waiting for connections:
  *net.TCPConn 0xc00053a008 127.0.0.1:50540 in state active
2022/12/19 20:58:18 httptest.Server blocked in Close after 5 seconds, waiting for connections:
  *net.TCPConn 0xc00053a118 127.0.0.1:50559 in state active
--- FAIL: TestServerGracefulClose (3.00s)
    serve_test.go:3151: ReadLine: read tcp 127.0.0.1:50835->127.0.0.1:50834: read: connection reset by peer

2022-12-21 19:08 darwin-amd64-nocgo go@856ec210 net/http.TestServerGracefulClose (log)

2022/12/21 19:27:32 httptest.Server blocked in Close after 5 seconds, waiting for connections:
  *net.TCPConn 0xc000096040 127.0.0.1:50524 in state active
2022/12/21 19:27:32 httptest.Server blocked in Close after 5 seconds, waiting for connections:
  *net.TCPConn 0xc000203880 127.0.0.1:50527 in state active
2022/12/21 19:27:32 httptest.Server blocked in Close after 5 seconds, waiting for connections:
  *net.TCPConn 0xc000174070 127.0.0.1:50540 in state active
--- FAIL: TestServerGracefulClose (2.41s)
    serve_test.go:3144: ReadLine: read tcp 127.0.0.1:50784->127.0.0.1:50783: read: connection reset by peer

2022-12-22 19:21 darwin-amd64-12_0 go@91bc4cd1 net/http.TestServerGracefulClose (log)

--- FAIL: TestServerGracefulClose (2.75s)
    serve_test.go:3151: ReadLine: read tcp 127.0.0.1:50514->127.0.0.1:50513: read: connection reset by peer

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "net/http" && test == "TestServerGracefulClose" && `connection reset by peer`

2023-01-04 22:23 darwin-amd64-11_0 go@e04be8b2 net/http.TestServerGracefulClose (log)

--- FAIL: TestServerGracefulClose (4.77s)
    serve_test.go:3151: ReadLine: read tcp 127.0.0.1:50617->127.0.0.1:50616: read: connection reset by peer

— watchflakes