Initial contribution
diff --git a/src/net/udp_test.go b/src/net/udp_test.go
new file mode 100644
index 0000000..125bbca
--- /dev/null
+++ b/src/net/udp_test.go
@@ -0,0 +1,298 @@
+// Copyright 2012 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 net
+
+import (
+ "reflect"
+ "runtime"
+ "strings"
+ "testing"
+ "time"
+)
+
+func TestResolveUDPAddr(t *testing.T) {
+ for _, tt := range resolveTCPAddrTests {
+ net := strings.Replace(tt.net, "tcp", "udp", -1)
+ addr, err := ResolveUDPAddr(net, tt.litAddrOrName)
+ if err != tt.err {
+ t.Fatalf("ResolveUDPAddr(%q, %q) failed: %v", net, tt.litAddrOrName, err)
+ }
+ if !reflect.DeepEqual(addr, (*UDPAddr)(tt.addr)) {
+ t.Fatalf("ResolveUDPAddr(%q, %q) = %#v, want %#v", net, tt.litAddrOrName, addr, tt.addr)
+ }
+ if err == nil {
+ str := addr.String()
+ addr1, err := ResolveUDPAddr(net, str)
+ if err != nil {
+ t.Fatalf("ResolveUDPAddr(%q, %q) [from %q]: %v", net, str, tt.litAddrOrName, err)
+ }
+ if !reflect.DeepEqual(addr1, addr) {
+ t.Fatalf("ResolveUDPAddr(%q, %q) [from %q] = %#v, want %#v", net, str, tt.litAddrOrName, addr1, addr)
+ }
+ }
+ }
+}
+
+func TestReadFromUDP(t *testing.T) {
+ switch runtime.GOOS {
+ case "nacl", "plan9":
+ t.Skipf("skipping test on %q, see issue 8916", runtime.GOOS)
+ }
+
+ ra, err := ResolveUDPAddr("udp", "127.0.0.1:7")
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ la, err := ResolveUDPAddr("udp", "127.0.0.1:0")
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ c, err := ListenUDP("udp", la)
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer c.Close()
+
+ _, err = c.WriteToUDP([]byte("a"), ra)
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ err = c.SetDeadline(time.Now().Add(100 * time.Millisecond))
+ if err != nil {
+ t.Fatal(err)
+ }
+ b := make([]byte, 1)
+ _, _, err = c.ReadFromUDP(b)
+ if err == nil {
+ t.Fatal("ReadFromUDP should fail")
+ } else if !isTimeout(err) {
+ t.Fatal(err)
+ }
+}
+
+func TestWriteToUDP(t *testing.T) {
+ switch runtime.GOOS {
+ case "plan9":
+ t.Skipf("skipping test on %q", runtime.GOOS)
+ }
+
+ l, err := ListenPacket("udp", "127.0.0.1:0")
+ if err != nil {
+ t.Fatalf("Listen failed: %v", err)
+ }
+ defer l.Close()
+
+ testWriteToConn(t, l.LocalAddr().String())
+ testWriteToPacketConn(t, l.LocalAddr().String())
+}
+
+func testWriteToConn(t *testing.T, raddr string) {
+ c, err := Dial("udp", raddr)
+ if err != nil {
+ t.Fatalf("Dial failed: %v", err)
+ }
+ defer c.Close()
+
+ ra, err := ResolveUDPAddr("udp", raddr)
+ if err != nil {
+ t.Fatalf("ResolveUDPAddr failed: %v", err)
+ }
+
+ _, err = c.(*UDPConn).WriteToUDP([]byte("Connection-oriented mode socket"), ra)
+ if err == nil {
+ t.Fatal("WriteToUDP should fail")
+ }
+ if err != nil && err.(*OpError).Err != ErrWriteToConnected {
+ t.Fatalf("WriteToUDP should fail as ErrWriteToConnected: %v", err)
+ }
+
+ _, err = c.(*UDPConn).WriteTo([]byte("Connection-oriented mode socket"), ra)
+ if err == nil {
+ t.Fatal("WriteTo should fail")
+ }
+ if err != nil && err.(*OpError).Err != ErrWriteToConnected {
+ t.Fatalf("WriteTo should fail as ErrWriteToConnected: %v", err)
+ }
+
+ _, err = c.Write([]byte("Connection-oriented mode socket"))
+ if err != nil {
+ t.Fatalf("Write failed: %v", err)
+ }
+}
+
+func testWriteToPacketConn(t *testing.T, raddr string) {
+ c, err := ListenPacket("udp", "127.0.0.1:0")
+ if err != nil {
+ t.Fatalf("ListenPacket failed: %v", err)
+ }
+ defer c.Close()
+
+ ra, err := ResolveUDPAddr("udp", raddr)
+ if err != nil {
+ t.Fatalf("ResolveUDPAddr failed: %v", err)
+ }
+
+ _, err = c.(*UDPConn).WriteToUDP([]byte("Connection-less mode socket"), ra)
+ if err != nil {
+ t.Fatalf("WriteToUDP failed: %v", err)
+ }
+
+ _, err = c.WriteTo([]byte("Connection-less mode socket"), ra)
+ if err != nil {
+ t.Fatalf("WriteTo failed: %v", err)
+ }
+
+ _, err = c.(*UDPConn).Write([]byte("Connection-less mode socket"))
+ if err == nil {
+ t.Fatal("Write should fail")
+ }
+}
+
+var udpConnLocalNameTests = []struct {
+ net string
+ laddr *UDPAddr
+}{
+ {"udp4", &UDPAddr{IP: IPv4(127, 0, 0, 1)}},
+ {"udp4", &UDPAddr{}},
+ {"udp4", nil},
+}
+
+func TestUDPConnLocalName(t *testing.T) {
+ if testing.Short() || !*testExternal {
+ t.Skip("skipping test to avoid external network")
+ }
+
+ for _, tt := range udpConnLocalNameTests {
+ c, err := ListenUDP(tt.net, tt.laddr)
+ if err != nil {
+ t.Fatalf("ListenUDP failed: %v", err)
+ }
+ defer c.Close()
+ la := c.LocalAddr()
+ if a, ok := la.(*UDPAddr); !ok || a.Port == 0 {
+ t.Fatalf("got %v; expected a proper address with non-zero port number", la)
+ }
+ }
+}
+
+func TestUDPConnLocalAndRemoteNames(t *testing.T) {
+ for _, laddr := range []string{"", "127.0.0.1:0"} {
+ c1, err := ListenPacket("udp", "127.0.0.1:0")
+ if err != nil {
+ t.Fatalf("ListenUDP failed: %v", err)
+ }
+ defer c1.Close()
+
+ var la *UDPAddr
+ if laddr != "" {
+ var err error
+ if la, err = ResolveUDPAddr("udp", laddr); err != nil {
+ t.Fatalf("ResolveUDPAddr failed: %v", err)
+ }
+ }
+ c2, err := DialUDP("udp", la, c1.LocalAddr().(*UDPAddr))
+ if err != nil {
+ t.Fatalf("DialUDP failed: %v", err)
+ }
+ defer c2.Close()
+
+ var connAddrs = [4]struct {
+ got Addr
+ ok bool
+ }{
+ {c1.LocalAddr(), true},
+ {c1.(*UDPConn).RemoteAddr(), false},
+ {c2.LocalAddr(), true},
+ {c2.RemoteAddr(), true},
+ }
+ for _, ca := range connAddrs {
+ if a, ok := ca.got.(*UDPAddr); ok != ca.ok || ok && a.Port == 0 {
+ t.Fatalf("got %v; expected a proper address with non-zero port number", ca.got)
+ }
+ }
+ }
+}
+
+func TestIPv6LinkLocalUnicastUDP(t *testing.T) {
+ if testing.Short() || !*testExternal {
+ t.Skip("skipping test to avoid external network")
+ }
+ if !supportsIPv6 {
+ t.Skip("ipv6 is not supported")
+ }
+ ifi := loopbackInterface()
+ if ifi == nil {
+ t.Skip("loopback interface not found")
+ }
+ laddr := ipv6LinkLocalUnicastAddr(ifi)
+ if laddr == "" {
+ t.Skip("ipv6 unicast address on loopback not found")
+ }
+
+ type test struct {
+ net, addr string
+ nameLookup bool
+ }
+ var tests = []test{
+ {"udp", "[" + laddr + "%" + ifi.Name + "]:0", false},
+ {"udp6", "[" + laddr + "%" + ifi.Name + "]:0", false},
+ }
+ // The first udp test fails on DragonFly - see issue 7473.
+ if runtime.GOOS == "dragonfly" {
+ tests = tests[1:]
+ }
+ switch runtime.GOOS {
+ case "darwin", "dragonfly", "freebsd", "openbsd", "netbsd":
+ tests = append(tests, []test{
+ {"udp", "[localhost%" + ifi.Name + "]:0", true},
+ {"udp6", "[localhost%" + ifi.Name + "]:0", true},
+ }...)
+ case "linux":
+ tests = append(tests, []test{
+ {"udp", "[ip6-localhost%" + ifi.Name + "]:0", true},
+ {"udp6", "[ip6-localhost%" + ifi.Name + "]:0", true},
+ }...)
+ }
+ for _, tt := range tests {
+ c1, err := ListenPacket(tt.net, tt.addr)
+ if err != nil {
+ // It might return "LookupHost returned no
+ // suitable address" error on some platforms.
+ t.Logf("ListenPacket failed: %v", err)
+ continue
+ }
+ defer c1.Close()
+ if la, ok := c1.LocalAddr().(*UDPAddr); !ok || !tt.nameLookup && la.Zone == "" {
+ t.Fatalf("got %v; expected a proper address with zone identifier", la)
+ }
+
+ c2, err := Dial(tt.net, c1.LocalAddr().String())
+ if err != nil {
+ t.Fatalf("Dial failed: %v", err)
+ }
+ defer c2.Close()
+ if la, ok := c2.LocalAddr().(*UDPAddr); !ok || !tt.nameLookup && la.Zone == "" {
+ t.Fatalf("got %v; expected a proper address with zone identifier", la)
+ }
+ if ra, ok := c2.RemoteAddr().(*UDPAddr); !ok || !tt.nameLookup && ra.Zone == "" {
+ t.Fatalf("got %v; expected a proper address with zone identifier", ra)
+ }
+
+ if _, err := c2.Write([]byte("UDP OVER IPV6 LINKLOCAL TEST")); err != nil {
+ t.Fatalf("Conn.Write failed: %v", err)
+ }
+ b := make([]byte, 32)
+ if _, from, err := c1.ReadFrom(b); err != nil {
+ t.Fatalf("PacketConn.ReadFrom failed: %v", err)
+ } else {
+ if ra, ok := from.(*UDPAddr); !ok || !tt.nameLookup && ra.Zone == "" {
+ t.Fatalf("got %v; expected a proper address with zone identifier", ra)
+ }
+ }
+ }
+}
