mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
3b92384394
Was able to get 2s wait times with 500 concurrent requests on a fast machine; a slower machine could possibly see similar delays with a single connection. Fixes #6220
104 lines
2.4 KiB
Go
104 lines
2.4 KiB
Go
// Copyright 2015 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package transport
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import (
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"net"
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"testing"
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"time"
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)
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func TestReadWriteTimeoutDialer(t *testing.T) {
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stop := make(chan struct{})
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ln, err := net.Listen("tcp", "127.0.0.1:0")
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if err != nil {
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t.Fatalf("unexpected listen error: %v", err)
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}
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ts := testBlockingServer{ln, 2, stop}
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go ts.Start(t)
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d := rwTimeoutDialer{
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wtimeoutd: 10 * time.Millisecond,
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rdtimeoutd: 10 * time.Millisecond,
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}
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conn, err := d.Dial("tcp", ln.Addr().String())
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if err != nil {
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t.Fatalf("unexpected dial error: %v", err)
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}
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defer conn.Close()
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// fill the socket buffer
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data := make([]byte, 5*1024*1024)
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done := make(chan struct{})
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go func() {
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_, err = conn.Write(data)
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done <- struct{}{}
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}()
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select {
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case <-done:
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// Wait 5s more than timeout to avoid delay in low-end systems;
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// the slack was 1s extra, but that wasn't enough for CI.
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case <-time.After(d.wtimeoutd*10 + 5*time.Second):
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t.Fatal("wait timeout")
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}
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if operr, ok := err.(*net.OpError); !ok || operr.Op != "write" || !operr.Timeout() {
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t.Errorf("err = %v, want write i/o timeout error", err)
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}
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conn, err = d.Dial("tcp", ln.Addr().String())
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if err != nil {
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t.Fatalf("unexpected dial error: %v", err)
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}
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defer conn.Close()
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buf := make([]byte, 10)
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go func() {
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_, err = conn.Read(buf)
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done <- struct{}{}
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}()
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select {
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case <-done:
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case <-time.After(d.rdtimeoutd * 10):
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t.Fatal("wait timeout")
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}
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if operr, ok := err.(*net.OpError); !ok || operr.Op != "read" || !operr.Timeout() {
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t.Errorf("err = %v, want write i/o timeout error", err)
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}
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stop <- struct{}{}
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}
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type testBlockingServer struct {
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ln net.Listener
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n int
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stop chan struct{}
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}
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func (ts *testBlockingServer) Start(t *testing.T) {
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for i := 0; i < ts.n; i++ {
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conn, err := ts.ln.Accept()
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if err != nil {
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t.Fatal(err)
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}
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defer conn.Close()
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}
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<-ts.stop
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}
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