276 lines
7.4 KiB
Go
276 lines
7.4 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
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import (
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"fmt"
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"reflect"
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"runtime"
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"testing"
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)
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type resolveUDPAddrTest struct {
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net string
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litAddr string
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addr *UDPAddr
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err error
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}
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var resolveUDPAddrTests = []resolveUDPAddrTest{
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{"udp", "127.0.0.1:0", &UDPAddr{IP: IPv4(127, 0, 0, 1), Port: 0}, nil},
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{"udp4", "127.0.0.1:65535", &UDPAddr{IP: IPv4(127, 0, 0, 1), Port: 65535}, nil},
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{"udp", "[::1]:1", &UDPAddr{IP: ParseIP("::1"), Port: 1}, nil},
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{"udp6", "[::1]:65534", &UDPAddr{IP: ParseIP("::1"), Port: 65534}, nil},
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{"udp", "[::1%en0]:1", &UDPAddr{IP: ParseIP("::1"), Port: 1, Zone: "en0"}, nil},
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{"udp6", "[::1%911]:2", &UDPAddr{IP: ParseIP("::1"), Port: 2, Zone: "911"}, nil},
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{"", "127.0.0.1:0", &UDPAddr{IP: IPv4(127, 0, 0, 1), Port: 0}, nil}, // Go 1.0 behavior
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{"", "[::1]:0", &UDPAddr{IP: ParseIP("::1"), Port: 0}, nil}, // Go 1.0 behavior
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{"sip", "127.0.0.1:0", nil, UnknownNetworkError("sip")},
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}
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func init() {
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if ifi := loopbackInterface(); ifi != nil {
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index := fmt.Sprintf("%v", ifi.Index)
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resolveUDPAddrTests = append(resolveUDPAddrTests, []resolveUDPAddrTest{
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{"udp6", "[fe80::1%" + ifi.Name + "]:3", &UDPAddr{IP: ParseIP("fe80::1"), Port: 3, Zone: zoneToString(ifi.Index)}, nil},
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{"udp6", "[fe80::1%" + index + "]:4", &UDPAddr{IP: ParseIP("fe80::1"), Port: 4, Zone: index}, nil},
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}...)
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}
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}
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func TestResolveUDPAddr(t *testing.T) {
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for _, tt := range resolveUDPAddrTests {
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addr, err := ResolveUDPAddr(tt.net, tt.litAddr)
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if err != tt.err {
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t.Fatalf("ResolveUDPAddr(%v, %v) failed: %v", tt.net, tt.litAddr, err)
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}
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if !reflect.DeepEqual(addr, tt.addr) {
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t.Fatalf("got %#v; expected %#v", addr, tt.addr)
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}
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}
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}
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func TestWriteToUDP(t *testing.T) {
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switch runtime.GOOS {
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case "plan9":
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t.Skipf("skipping test on %q", runtime.GOOS)
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}
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l, err := ListenPacket("udp", "127.0.0.1:0")
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if err != nil {
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t.Fatalf("Listen failed: %v", err)
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}
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defer l.Close()
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testWriteToConn(t, l.LocalAddr().String())
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testWriteToPacketConn(t, l.LocalAddr().String())
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}
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func testWriteToConn(t *testing.T, raddr string) {
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c, err := Dial("udp", raddr)
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if err != nil {
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t.Fatalf("Dial failed: %v", err)
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}
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defer c.Close()
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ra, err := ResolveUDPAddr("udp", raddr)
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if err != nil {
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t.Fatalf("ResolveUDPAddr failed: %v", err)
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}
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_, err = c.(*UDPConn).WriteToUDP([]byte("Connection-oriented mode socket"), ra)
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if err == nil {
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t.Fatal("WriteToUDP should fail")
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}
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if err != nil && err.(*OpError).Err != ErrWriteToConnected {
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t.Fatalf("WriteToUDP should fail as ErrWriteToConnected: %v", err)
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}
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_, err = c.(*UDPConn).WriteTo([]byte("Connection-oriented mode socket"), ra)
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if err == nil {
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t.Fatal("WriteTo should fail")
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}
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if err != nil && err.(*OpError).Err != ErrWriteToConnected {
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t.Fatalf("WriteTo should fail as ErrWriteToConnected: %v", err)
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}
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_, err = c.Write([]byte("Connection-oriented mode socket"))
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if err != nil {
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t.Fatalf("Write failed: %v", err)
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}
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}
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func testWriteToPacketConn(t *testing.T, raddr string) {
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c, err := ListenPacket("udp", "127.0.0.1:0")
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if err != nil {
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t.Fatalf("ListenPacket failed: %v", err)
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}
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defer c.Close()
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ra, err := ResolveUDPAddr("udp", raddr)
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if err != nil {
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t.Fatalf("ResolveUDPAddr failed: %v", err)
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}
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_, err = c.(*UDPConn).WriteToUDP([]byte("Connection-less mode socket"), ra)
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if err != nil {
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t.Fatalf("WriteToUDP failed: %v", err)
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}
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_, err = c.WriteTo([]byte("Connection-less mode socket"), ra)
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if err != nil {
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t.Fatalf("WriteTo failed: %v", err)
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}
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_, err = c.(*UDPConn).Write([]byte("Connection-less mode socket"))
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if err == nil {
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t.Fatal("Write should fail")
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}
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}
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var udpConnLocalNameTests = []struct {
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net string
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laddr *UDPAddr
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}{
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{"udp4", &UDPAddr{IP: IPv4(127, 0, 0, 1)}},
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{"udp4", &UDPAddr{}},
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{"udp4", nil},
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}
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func TestUDPConnLocalName(t *testing.T) {
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if testing.Short() || !*testExternal {
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t.Skip("skipping test to avoid external network")
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}
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for _, tt := range udpConnLocalNameTests {
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c, err := ListenUDP(tt.net, tt.laddr)
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if err != nil {
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t.Fatalf("ListenUDP failed: %v", err)
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}
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defer c.Close()
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la := c.LocalAddr()
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if a, ok := la.(*UDPAddr); !ok || a.Port == 0 {
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t.Fatalf("got %v; expected a proper address with non-zero port number", la)
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}
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}
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}
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func TestUDPConnLocalAndRemoteNames(t *testing.T) {
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for _, laddr := range []string{"", "127.0.0.1:0"} {
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c1, err := ListenPacket("udp", "127.0.0.1:0")
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if err != nil {
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t.Fatalf("ListenUDP failed: %v", err)
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}
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defer c1.Close()
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var la *UDPAddr
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if laddr != "" {
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var err error
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if la, err = ResolveUDPAddr("udp", laddr); err != nil {
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t.Fatalf("ResolveUDPAddr failed: %v", err)
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}
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}
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c2, err := DialUDP("udp", la, c1.LocalAddr().(*UDPAddr))
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if err != nil {
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t.Fatalf("DialUDP failed: %v", err)
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}
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defer c2.Close()
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var connAddrs = [4]struct {
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got Addr
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ok bool
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}{
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{c1.LocalAddr(), true},
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{c1.(*UDPConn).RemoteAddr(), false},
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{c2.LocalAddr(), true},
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{c2.RemoteAddr(), true},
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}
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for _, ca := range connAddrs {
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if a, ok := ca.got.(*UDPAddr); ok != ca.ok || ok && a.Port == 0 {
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t.Fatalf("got %v; expected a proper address with non-zero port number", ca.got)
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}
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}
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}
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}
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func TestIPv6LinkLocalUnicastUDP(t *testing.T) {
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if testing.Short() || !*testExternal {
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t.Skip("skipping test to avoid external network")
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}
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if !supportsIPv6 {
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t.Skip("ipv6 is not supported")
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}
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ifi := loopbackInterface()
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if ifi == nil {
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t.Skip("loopback interface not found")
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}
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laddr := ipv6LinkLocalUnicastAddr(ifi)
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if laddr == "" {
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t.Skip("ipv6 unicast address on loopback not found")
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}
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type test struct {
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net, addr string
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nameLookup bool
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}
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var tests = []test{
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{"udp", "[" + laddr + "%" + ifi.Name + "]:0", false},
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{"udp6", "[" + laddr + "%" + ifi.Name + "]:0", false},
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}
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switch runtime.GOOS {
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case "darwin", "freebsd", "openbsd", "netbsd":
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tests = append(tests, []test{
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{"udp", "[localhost%" + ifi.Name + "]:0", true},
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{"udp6", "[localhost%" + ifi.Name + "]:0", true},
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}...)
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case "linux":
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tests = append(tests, []test{
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{"udp", "[ip6-localhost%" + ifi.Name + "]:0", true},
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{"udp6", "[ip6-localhost%" + ifi.Name + "]:0", true},
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}...)
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}
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for _, tt := range tests {
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c1, err := ListenPacket(tt.net, tt.addr)
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if err != nil {
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// It might return "LookupHost returned no
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// suitable address" error on some platforms.
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t.Logf("ListenPacket failed: %v", err)
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continue
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}
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defer c1.Close()
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if la, ok := c1.LocalAddr().(*UDPAddr); !ok || !tt.nameLookup && la.Zone == "" {
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t.Fatalf("got %v; expected a proper address with zone identifier", la)
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}
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c2, err := Dial(tt.net, c1.LocalAddr().String())
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if err != nil {
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t.Fatalf("Dial failed: %v", err)
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}
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defer c2.Close()
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if la, ok := c2.LocalAddr().(*UDPAddr); !ok || !tt.nameLookup && la.Zone == "" {
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t.Fatalf("got %v; expected a proper address with zone identifier", la)
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}
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if ra, ok := c2.RemoteAddr().(*UDPAddr); !ok || !tt.nameLookup && ra.Zone == "" {
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t.Fatalf("got %v; expected a proper address with zone identifier", ra)
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}
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if _, err := c2.Write([]byte("UDP OVER IPV6 LINKLOCAL TEST")); err != nil {
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t.Fatalf("Conn.Write failed: %v", err)
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}
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b := make([]byte, 32)
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if _, from, err := c1.ReadFrom(b); err != nil {
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t.Fatalf("PacketConn.ReadFrom failed: %v", err)
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} else {
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if ra, ok := from.(*UDPAddr); !ok || !tt.nameLookup && ra.Zone == "" {
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t.Fatalf("got %v; expected a proper address with zone identifier", ra)
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}
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}
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}
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}
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