404 lines
10 KiB
Go
404 lines
10 KiB
Go
// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package net_test
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import (
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"bytes"
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"net"
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"os"
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"runtime"
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"testing"
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"time"
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)
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var condErrorf = func() func(*testing.T, string, ...interface{}) {
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// A few APIs are not implemented yet on both Plan 9 and Windows.
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switch runtime.GOOS {
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case "plan9", "windows":
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return (*testing.T).Logf
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}
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return (*testing.T).Errorf
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}()
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func TestTCPListenerSpecificMethods(t *testing.T) {
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la, err := net.ResolveTCPAddr("tcp4", "127.0.0.1:0")
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if err != nil {
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t.Fatalf("net.ResolveTCPAddr failed: %v", err)
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}
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ln, err := net.ListenTCP("tcp4", la)
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if err != nil {
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t.Fatalf("net.ListenTCP failed: %v", err)
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}
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ln.Addr()
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ln.SetDeadline(time.Now().Add(30 * time.Nanosecond))
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defer ln.Close()
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if c, err := ln.Accept(); err != nil {
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if !err.(net.Error).Timeout() {
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t.Errorf("net.TCPListener.Accept failed: %v", err)
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return
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}
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} else {
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c.Close()
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}
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if c, err := ln.AcceptTCP(); err != nil {
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if !err.(net.Error).Timeout() {
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t.Errorf("net.TCPListener.AcceptTCP failed: %v", err)
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return
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}
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} else {
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c.Close()
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}
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if f, err := ln.File(); err != nil {
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condErrorf(t, "net.TCPListener.File failed: %v", err)
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return
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} else {
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f.Close()
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}
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}
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func TestTCPConnSpecificMethods(t *testing.T) {
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la, err := net.ResolveTCPAddr("tcp4", "127.0.0.1:0")
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if err != nil {
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t.Fatalf("net.ResolveTCPAddr failed: %v", err)
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}
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ln, err := net.ListenTCP("tcp4", la)
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if err != nil {
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t.Fatalf("net.ListenTCP failed: %v", err)
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}
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ln.Addr()
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defer ln.Close()
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done := make(chan int)
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go transponder(t, ln, done)
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ra, err := net.ResolveTCPAddr("tcp4", ln.Addr().String())
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if err != nil {
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t.Errorf("net.ResolveTCPAddr failed: %v", err)
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return
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}
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c, err := net.DialTCP("tcp4", nil, ra)
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if err != nil {
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t.Errorf("net.DialTCP failed: %v", err)
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return
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}
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c.SetKeepAlive(false)
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c.SetLinger(0)
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c.SetNoDelay(false)
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c.LocalAddr()
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c.RemoteAddr()
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c.SetDeadline(time.Now().Add(100 * time.Millisecond))
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c.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
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c.SetWriteDeadline(time.Now().Add(100 * time.Millisecond))
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defer c.Close()
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if _, err := c.Write([]byte("TCPCONN TEST")); err != nil {
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t.Errorf("net.TCPConn.Write failed: %v", err)
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return
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}
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rb := make([]byte, 128)
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if _, err := c.Read(rb); err != nil {
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t.Errorf("net.TCPConn.Read failed: %v", err)
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return
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}
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<-done
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}
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func TestUDPConnSpecificMethods(t *testing.T) {
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la, err := net.ResolveUDPAddr("udp4", "127.0.0.1:0")
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if err != nil {
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t.Fatalf("net.ResolveUDPAddr failed: %v", err)
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}
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c, err := net.ListenUDP("udp4", la)
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if err != nil {
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t.Fatalf("net.ListenUDP failed: %v", err)
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}
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c.LocalAddr()
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c.RemoteAddr()
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c.SetDeadline(time.Now().Add(100 * time.Millisecond))
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c.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
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c.SetWriteDeadline(time.Now().Add(100 * time.Millisecond))
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c.SetReadBuffer(2048)
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c.SetWriteBuffer(2048)
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defer c.Close()
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wb := []byte("UDPCONN TEST")
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rb := make([]byte, 128)
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if _, err := c.WriteToUDP(wb, c.LocalAddr().(*net.UDPAddr)); err != nil {
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t.Errorf("net.UDPConn.WriteToUDP failed: %v", err)
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return
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}
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if _, _, err := c.ReadFromUDP(rb); err != nil {
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t.Errorf("net.UDPConn.ReadFromUDP failed: %v", err)
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return
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}
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if _, _, err := c.WriteMsgUDP(wb, nil, c.LocalAddr().(*net.UDPAddr)); err != nil {
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condErrorf(t, "net.UDPConn.WriteMsgUDP failed: %v", err)
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return
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}
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if _, _, _, _, err := c.ReadMsgUDP(rb, nil); err != nil {
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condErrorf(t, "net.UDPConn.ReadMsgUDP failed: %v", err)
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return
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}
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if f, err := c.File(); err != nil {
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condErrorf(t, "net.UDPConn.File failed: %v", err)
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return
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} else {
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f.Close()
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}
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}
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func TestIPConnSpecificMethods(t *testing.T) {
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switch runtime.GOOS {
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case "plan9":
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t.Skipf("skipping read test on %q", runtime.GOOS)
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}
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if os.Getuid() != 0 {
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t.Skipf("skipping test; must be root")
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}
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la, err := net.ResolveIPAddr("ip4", "127.0.0.1")
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if err != nil {
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t.Fatalf("net.ResolveIPAddr failed: %v", err)
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}
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c, err := net.ListenIP("ip4:icmp", la)
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if err != nil {
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t.Fatalf("net.ListenIP failed: %v", err)
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}
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c.LocalAddr()
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c.RemoteAddr()
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c.SetDeadline(time.Now().Add(100 * time.Millisecond))
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c.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
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c.SetWriteDeadline(time.Now().Add(100 * time.Millisecond))
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c.SetReadBuffer(2048)
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c.SetWriteBuffer(2048)
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defer c.Close()
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id := os.Getpid() & 0xffff
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wb := newICMPEchoRequest(id, 1, 128, []byte("IPCONN TEST "))
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rb := make([]byte, 20+128)
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if _, err := c.WriteToIP(wb, c.LocalAddr().(*net.IPAddr)); err != nil {
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t.Errorf("net.IPConn.WriteToIP failed: %v", err)
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return
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}
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if _, _, err := c.ReadFromIP(rb); err != nil {
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t.Errorf("net.IPConn.ReadFromIP failed: %v", err)
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return
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}
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if _, _, err := c.WriteMsgIP(wb, nil, c.LocalAddr().(*net.IPAddr)); err != nil {
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condErrorf(t, "net.UDPConn.WriteMsgIP failed: %v", err)
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return
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}
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if _, _, _, _, err := c.ReadMsgIP(rb, nil); err != nil {
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condErrorf(t, "net.UDPConn.ReadMsgIP failed: %v", err)
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return
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}
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if f, err := c.File(); err != nil {
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condErrorf(t, "net.IPConn.File failed: %v", err)
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return
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} else {
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f.Close()
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}
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}
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func TestUnixListenerSpecificMethods(t *testing.T) {
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switch runtime.GOOS {
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case "plan9", "windows":
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t.Skipf("skipping read test on %q", runtime.GOOS)
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}
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p := "/tmp/gotest.net"
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os.Remove(p)
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la, err := net.ResolveUnixAddr("unix", p)
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if err != nil {
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t.Fatalf("net.ResolveUnixAddr failed: %v", err)
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}
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ln, err := net.ListenUnix("unix", la)
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if err != nil {
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t.Fatalf("net.ListenUnix failed: %v", err)
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}
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ln.Addr()
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ln.SetDeadline(time.Now().Add(30 * time.Nanosecond))
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defer ln.Close()
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defer os.Remove(p)
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if c, err := ln.Accept(); err != nil {
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if !err.(net.Error).Timeout() {
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t.Errorf("net.TCPListener.AcceptTCP failed: %v", err)
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return
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}
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} else {
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c.Close()
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}
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if c, err := ln.AcceptUnix(); err != nil {
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if !err.(net.Error).Timeout() {
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t.Errorf("net.TCPListener.AcceptTCP failed: %v", err)
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return
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}
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} else {
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c.Close()
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}
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if f, err := ln.File(); err != nil {
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t.Errorf("net.UnixListener.File failed: %v", err)
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return
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} else {
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f.Close()
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}
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}
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func TestUnixConnSpecificMethods(t *testing.T) {
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switch runtime.GOOS {
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case "plan9", "windows":
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t.Skipf("skipping test on %q", runtime.GOOS)
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}
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p1, p2, p3 := "/tmp/gotest.net1", "/tmp/gotest.net2", "/tmp/gotest.net3"
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os.Remove(p1)
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os.Remove(p2)
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os.Remove(p3)
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a1, err := net.ResolveUnixAddr("unixgram", p1)
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if err != nil {
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t.Fatalf("net.ResolveUnixAddr failed: %v", err)
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}
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c1, err := net.DialUnix("unixgram", a1, nil)
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if err != nil {
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t.Fatalf("net.DialUnix failed: %v", err)
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}
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c1.LocalAddr()
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c1.RemoteAddr()
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c1.SetDeadline(time.Now().Add(100 * time.Millisecond))
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c1.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
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c1.SetWriteDeadline(time.Now().Add(100 * time.Millisecond))
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c1.SetReadBuffer(2048)
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c1.SetWriteBuffer(2048)
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defer c1.Close()
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defer os.Remove(p1)
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a2, err := net.ResolveUnixAddr("unixgram", p2)
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if err != nil {
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t.Errorf("net.ResolveUnixAddr failed: %v", err)
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return
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}
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c2, err := net.DialUnix("unixgram", a2, nil)
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if err != nil {
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t.Errorf("net.DialUnix failed: %v", err)
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return
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}
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c2.LocalAddr()
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c2.RemoteAddr()
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c2.SetDeadline(time.Now().Add(100 * time.Millisecond))
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c2.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
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c2.SetWriteDeadline(time.Now().Add(100 * time.Millisecond))
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c2.SetReadBuffer(2048)
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c2.SetWriteBuffer(2048)
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defer c2.Close()
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defer os.Remove(p2)
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a3, err := net.ResolveUnixAddr("unixgram", p3)
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if err != nil {
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t.Errorf("net.ResolveUnixAddr failed: %v", err)
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return
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}
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c3, err := net.ListenUnixgram("unixgram", a3)
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if err != nil {
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t.Errorf("net.ListenUnixgram failed: %v", err)
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return
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}
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c3.LocalAddr()
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c3.RemoteAddr()
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c3.SetDeadline(time.Now().Add(100 * time.Millisecond))
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c3.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
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c3.SetWriteDeadline(time.Now().Add(100 * time.Millisecond))
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c3.SetReadBuffer(2048)
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c3.SetWriteBuffer(2048)
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defer c3.Close()
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defer os.Remove(p3)
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wb := []byte("UNIXCONN TEST")
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rb1 := make([]byte, 128)
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rb2 := make([]byte, 128)
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rb3 := make([]byte, 128)
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if _, _, err := c1.WriteMsgUnix(wb, nil, a2); err != nil {
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t.Errorf("net.UnixConn.WriteMsgUnix failed: %v", err)
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return
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}
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if _, _, _, _, err := c2.ReadMsgUnix(rb2, nil); err != nil {
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t.Errorf("net.UnixConn.ReadMsgUnix failed: %v", err)
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return
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}
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if _, err := c2.WriteToUnix(wb, a1); err != nil {
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t.Errorf("net.UnixConn.WriteToUnix failed: %v", err)
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return
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}
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if _, _, err := c1.ReadFromUnix(rb1); err != nil {
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t.Errorf("net.UnixConn.ReadFromUnix failed: %v", err)
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return
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}
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if _, err := c3.WriteToUnix(wb, a1); err != nil {
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t.Errorf("net.UnixConn.WriteToUnix failed: %v", err)
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return
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}
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if _, _, err := c1.ReadFromUnix(rb1); err != nil {
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t.Errorf("net.UnixConn.ReadFromUnix failed: %v", err)
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return
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}
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if _, err := c2.WriteToUnix(wb, a3); err != nil {
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t.Errorf("net.UnixConn.WriteToUnix failed: %v", err)
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return
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}
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if _, _, err := c3.ReadFromUnix(rb3); err != nil {
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t.Errorf("net.UnixConn.ReadFromUnix failed: %v", err)
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return
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}
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if f, err := c1.File(); err != nil {
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t.Errorf("net.UnixConn.File failed: %v", err)
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return
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} else {
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f.Close()
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}
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}
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func newICMPEchoRequest(id, seqnum, msglen int, filler []byte) []byte {
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b := newICMPInfoMessage(id, seqnum, msglen, filler)
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b[0] = 8
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// calculate ICMP checksum
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cklen := len(b)
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s := uint32(0)
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for i := 0; i < cklen-1; i += 2 {
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s += uint32(b[i+1])<<8 | uint32(b[i])
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}
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if cklen&1 == 1 {
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s += uint32(b[cklen-1])
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}
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s = (s >> 16) + (s & 0xffff)
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s = s + (s >> 16)
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// place checksum back in header; using ^= avoids the
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// assumption the checksum bytes are zero
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b[2] ^= byte(^s & 0xff)
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b[3] ^= byte(^s >> 8)
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return b
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}
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func newICMPInfoMessage(id, seqnum, msglen int, filler []byte) []byte {
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b := make([]byte, msglen)
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copy(b[8:], bytes.Repeat(filler, (msglen-8)/len(filler)+1))
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b[0] = 0 // type
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b[1] = 0 // code
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b[2] = 0 // checksum
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b[3] = 0 // checksum
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b[4] = byte(id >> 8) // identifier
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b[5] = byte(id & 0xff) // identifier
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b[6] = byte(seqnum >> 8) // sequence number
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b[7] = byte(seqnum & 0xff) // sequence number
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return b
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}
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