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Now the package has a code coverage of 76.1% of statements. Also fixes flaky concurrent test. Fixes golang/go#5696. R=golang-codereviews, dave CC=golang-codereviews https://golang.org/cl/45620043
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,168 @@ | ||
| // Copyright 2013 The Go Authors. All rights reserved. | ||
| // Use of this source code is governed by a BSD-style | ||
| // license that can be found in the LICENSE file. | ||
|
|
||
| package ipv6_test | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "code.google.com/p/go.net/ipv6" | ||
| "net" | ||
| "runtime" | ||
| "sync" | ||
| "testing" | ||
| ) | ||
|
|
||
| func benchmarkUDPListener() (net.PacketConn, net.Addr, error) { | ||
| c, err := net.ListenPacket("udp6", "[::1]:0") | ||
| if err != nil { | ||
| return nil, nil, err | ||
| } | ||
| dst, err := net.ResolveUDPAddr("udp6", c.LocalAddr().String()) | ||
| if err != nil { | ||
| c.Close() | ||
| return nil, nil, err | ||
| } | ||
| return c, dst, nil | ||
| } | ||
|
|
||
| func BenchmarkReadWriteNetUDP(b *testing.B) { | ||
| c, dst, err := benchmarkUDPListener() | ||
| if err != nil { | ||
| b.Fatalf("benchmarkUDPListener failed: %v", err) | ||
| } | ||
| defer c.Close() | ||
|
|
||
| wb, rb := []byte("HELLO-R-U-THERE"), make([]byte, 128) | ||
| b.ResetTimer() | ||
| for i := 0; i < b.N; i++ { | ||
| benchmarkReadWriteNetUDP(b, c, wb, rb, dst) | ||
| } | ||
| } | ||
|
|
||
| func benchmarkReadWriteNetUDP(b *testing.B, c net.PacketConn, wb, rb []byte, dst net.Addr) { | ||
| if _, err := c.WriteTo(wb, dst); err != nil { | ||
| b.Fatalf("net.PacketConn.WriteTo failed: %v", err) | ||
| } | ||
| if _, _, err := c.ReadFrom(rb); err != nil { | ||
| b.Fatalf("net.PacketConn.ReadFrom failed: %v", err) | ||
| } | ||
| } | ||
|
|
||
| func BenchmarkReadWriteIPv6UDP(b *testing.B) { | ||
| c, dst, err := benchmarkUDPListener() | ||
| if err != nil { | ||
| b.Fatalf("benchmarkUDPListener failed: %v", err) | ||
| } | ||
| defer c.Close() | ||
|
|
||
| p := ipv6.NewPacketConn(c) | ||
| cf := ipv6.FlagTrafficClass | ipv6.FlagHopLimit | ipv6.FlagInterface | ipv6.FlagPathMTU | ||
| if err := p.SetControlMessage(cf, true); err != nil { | ||
| b.Fatalf("ipv6.PacketConn.SetControlMessage failed: %v", err) | ||
| } | ||
| ifi := loopbackInterface() | ||
|
|
||
| wb, rb := []byte("HELLO-R-U-THERE"), make([]byte, 128) | ||
| b.ResetTimer() | ||
| for i := 0; i < b.N; i++ { | ||
| benchmarkReadWriteIPv6UDP(b, p, wb, rb, dst, ifi) | ||
| } | ||
| } | ||
|
|
||
| func benchmarkReadWriteIPv6UDP(b *testing.B, p *ipv6.PacketConn, wb, rb []byte, dst net.Addr, ifi *net.Interface) { | ||
| cm := ipv6.ControlMessage{ | ||
| TrafficClass: DiffServAF11 | CongestionExperienced, | ||
| HopLimit: 1, | ||
| } | ||
| if ifi != nil { | ||
| cm.IfIndex = ifi.Index | ||
| } | ||
| if n, err := p.WriteTo(wb, &cm, dst); err != nil { | ||
| b.Fatalf("ipv6.PacketConn.WriteTo failed: %v", err) | ||
| } else if n != len(wb) { | ||
| b.Fatalf("ipv6.PacketConn.WriteTo failed: short write: %v", n) | ||
| } | ||
| if _, _, _, err := p.ReadFrom(rb); err != nil { | ||
| b.Fatalf("ipv6.PacketConn.ReadFrom failed: %v", err) | ||
| } | ||
| } | ||
|
|
||
| func TestPacketConnConcurrentReadWriteUnicastUDP(t *testing.T) { | ||
| switch runtime.GOOS { | ||
| case "plan9", "windows": | ||
| t.Skipf("not supported on %q", runtime.GOOS) | ||
| } | ||
| if !supportsIPv6 { | ||
| t.Skip("ipv6 is not supported") | ||
| } | ||
|
|
||
| c, err := net.ListenPacket("udp6", "[::1]:0") | ||
| if err != nil { | ||
| t.Fatalf("net.ListenPacket failed: %v", err) | ||
| } | ||
| defer c.Close() | ||
| p := ipv6.NewPacketConn(c) | ||
| defer p.Close() | ||
|
|
||
| dst, err := net.ResolveUDPAddr("udp6", c.LocalAddr().String()) | ||
| if err != nil { | ||
| t.Fatalf("net.ResolveUDPAddr failed: %v", err) | ||
| } | ||
|
|
||
| ifi := loopbackInterface() | ||
| cf := ipv6.FlagTrafficClass | ipv6.FlagHopLimit | ipv6.FlagSrc | ipv6.FlagDst | ipv6.FlagInterface | ipv6.FlagPathMTU | ||
| wb := []byte("HELLO-R-U-THERE") | ||
|
|
||
| var wg sync.WaitGroup | ||
| reader := func() { | ||
| defer wg.Done() | ||
| rb := make([]byte, 128) | ||
| if n, cm, _, err := p.ReadFrom(rb); err != nil { | ||
| t.Errorf("ipv6.PacketConn.ReadFrom failed: %v", err) | ||
| return | ||
| } else if !bytes.Equal(rb[:n], wb) { | ||
| t.Errorf("got %v; expected %v", rb[:n], wb) | ||
| return | ||
| } else { | ||
| t.Logf("rcvd cmsg: %v", cm) | ||
| } | ||
| } | ||
| writer := func(toggle bool) { | ||
| defer wg.Done() | ||
| cm := ipv6.ControlMessage{ | ||
| TrafficClass: DiffServAF11 | CongestionExperienced, | ||
| Src: net.IPv6loopback, | ||
| Dst: net.IPv6loopback, | ||
| } | ||
| if ifi != nil { | ||
| cm.IfIndex = ifi.Index | ||
| } | ||
| if err := p.SetControlMessage(cf, toggle); err != nil { | ||
| t.Errorf("ipv6.PacketConn.SetControlMessage failed: %v", err) | ||
| return | ||
| } | ||
| if n, err := p.WriteTo(wb, &cm, dst); err != nil { | ||
| t.Errorf("ipv6.PacketConn.WriteTo failed: %v", err) | ||
| return | ||
| } else if n != len(wb) { | ||
| t.Errorf("ipv6.PacketConn.WriteTo failed: short write: %v", n) | ||
| return | ||
| } | ||
| } | ||
|
|
||
| const N = 10 | ||
| wg.Add(N) | ||
| for i := 0; i < N; i++ { | ||
| go reader() | ||
| } | ||
| wg.Add(2 * N) | ||
| for i := 0; i < 2*N; i++ { | ||
| go writer(i%2 != 0) | ||
| } | ||
| wg.Add(N) | ||
| for i := 0; i < N; i++ { | ||
| go reader() | ||
| } | ||
| wg.Wait() | ||
| } |
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