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