| // 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" |
| "testing" |
| "time" |
| ) |
| |
| type resolveUDPAddrTest struct { |
| network string |
| litAddrOrName string |
| addr *UDPAddr |
| err error |
| } |
| |
| var resolveUDPAddrTests = []resolveUDPAddrTest{ |
| {"udp", "127.0.0.1:0", &UDPAddr{IP: IPv4(127, 0, 0, 1), Port: 0}, nil}, |
| {"udp4", "127.0.0.1:65535", &UDPAddr{IP: IPv4(127, 0, 0, 1), Port: 65535}, nil}, |
| |
| {"udp", "[::1]:0", &UDPAddr{IP: ParseIP("::1"), Port: 0}, nil}, |
| {"udp6", "[::1]:65535", &UDPAddr{IP: ParseIP("::1"), Port: 65535}, nil}, |
| |
| {"udp", "[::1%en0]:1", &UDPAddr{IP: ParseIP("::1"), Port: 1, Zone: "en0"}, nil}, |
| {"udp6", "[::1%911]:2", &UDPAddr{IP: ParseIP("::1"), Port: 2, Zone: "911"}, nil}, |
| |
| {"", "127.0.0.1:0", &UDPAddr{IP: IPv4(127, 0, 0, 1), Port: 0}, nil}, // Go 1.0 behavior |
| {"", "[::1]:0", &UDPAddr{IP: ParseIP("::1"), Port: 0}, nil}, // Go 1.0 behavior |
| |
| {"udp", ":12345", &UDPAddr{Port: 12345}, nil}, |
| |
| {"http", "127.0.0.1:0", nil, UnknownNetworkError("http")}, |
| } |
| |
| func TestResolveUDPAddr(t *testing.T) { |
| origTestHookLookupIP := testHookLookupIP |
| defer func() { testHookLookupIP = origTestHookLookupIP }() |
| testHookLookupIP = lookupLocalhost |
| |
| for i, tt := range resolveUDPAddrTests { |
| addr, err := ResolveUDPAddr(tt.network, tt.litAddrOrName) |
| if err != tt.err { |
| t.Errorf("#%d: %v", i, err) |
| } else if !reflect.DeepEqual(addr, tt.addr) { |
| t.Errorf("#%d: got %#v; want %#v", i, addr, tt.addr) |
| } |
| if err != nil { |
| continue |
| } |
| rtaddr, err := ResolveUDPAddr(addr.Network(), addr.String()) |
| if err != nil { |
| t.Errorf("#%d: %v", i, err) |
| } else if !reflect.DeepEqual(rtaddr, addr) { |
| t.Errorf("#%d: got %#v; want %#v", i, rtaddr, 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 !isTimeoutError(err) { |
| t.Fatal(err) |
| } |
| } |
| |
| func TestWriteToUDP(t *testing.T) { |
| switch runtime.GOOS { |
| case "plan9": |
| t.Skipf("skipping test on %q", runtime.GOOS) |
| } |
| |
| c, err := ListenPacket("udp", "127.0.0.1:0") |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer c.Close() |
| |
| testWriteToConn(t, c.LocalAddr().String()) |
| testWriteToPacketConn(t, c.LocalAddr().String()) |
| } |
| |
| func testWriteToConn(t *testing.T, raddr string) { |
| c, err := Dial("udp", raddr) |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer c.Close() |
| |
| ra, err := ResolveUDPAddr("udp", raddr) |
| if err != nil { |
| t.Fatal(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.Fatal(err) |
| } |
| |
| _, _, err = c.(*UDPConn).WriteMsgUDP([]byte("Connection-oriented mode socket"), nil, ra) |
| if err == nil { |
| t.Fatal("WriteMsgUDP should fail") |
| } |
| if err != nil && err.(*OpError).Err != ErrWriteToConnected { |
| t.Fatalf("WriteMsgUDP should fail as ErrWriteToConnected: %v", err) |
| } |
| _, _, err = c.(*UDPConn).WriteMsgUDP([]byte("Connection-oriented mode socket"), nil, nil) |
| switch runtime.GOOS { |
| case "nacl", "windows": // see golang.org/issue/9252 |
| t.Skipf("not implemented yet on %s", runtime.GOOS) |
| default: |
| if err != nil { |
| t.Fatal(err) |
| } |
| } |
| } |
| |
| func testWriteToPacketConn(t *testing.T, raddr string) { |
| c, err := ListenPacket("udp", "127.0.0.1:0") |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer c.Close() |
| |
| ra, err := ResolveUDPAddr("udp", raddr) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| _, err = c.(*UDPConn).WriteToUDP([]byte("Connection-less mode socket"), ra) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| _, err = c.WriteTo([]byte("Connection-less mode socket"), ra) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| _, err = c.(*UDPConn).Write([]byte("Connection-less mode socket")) |
| if err == nil { |
| t.Fatal("Write should fail") |
| } |
| |
| _, _, err = c.(*UDPConn).WriteMsgUDP([]byte("Connection-less mode socket"), nil, nil) |
| if err == nil { |
| t.Fatal("WriteMsgUDP should fail") |
| } |
| if err != nil && err.(*OpError).Err != errMissingAddress { |
| t.Fatalf("WriteMsgUDP should fail as errMissingAddress: %v", err) |
| } |
| _, _, err = c.(*UDPConn).WriteMsgUDP([]byte("Connection-less mode socket"), nil, ra) |
| switch runtime.GOOS { |
| case "nacl", "windows": // see golang.org/issue/9252 |
| t.Skipf("not implemented yet on %s", runtime.GOOS) |
| default: |
| if err != nil { |
| t.Fatal(err) |
| } |
| } |
| } |
| |
| 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) |
| } |
| } |
| } |
| } |
| |
| func TestUDPZeroBytePayload(t *testing.T) { |
| switch runtime.GOOS { |
| case "nacl", "plan9": |
| t.Skipf("not supported on %s", runtime.GOOS) |
| } |
| |
| c, err := newLocalPacketListener("udp") |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer c.Close() |
| |
| for _, genericRead := range []bool{false, true} { |
| n, err := c.WriteTo(nil, c.LocalAddr()) |
| if err != nil { |
| t.Fatal(err) |
| } |
| if n != 0 { |
| t.Errorf("got %d; want 0", n) |
| } |
| c.SetReadDeadline(time.Now().Add(100 * time.Millisecond)) |
| var b [1]byte |
| if genericRead { |
| _, err = c.(Conn).Read(b[:]) |
| } else { |
| _, _, err = c.ReadFrom(b[:]) |
| } |
| switch err { |
| case nil: // ReadFrom succeeds |
| default: // Read may timeout, it depends on the platform |
| if nerr, ok := err.(Error); !ok || !nerr.Timeout() { |
| t.Fatal(err) |
| } |
| } |
| } |
| } |
| |
| func TestUDPZeroByteBuffer(t *testing.T) { |
| switch runtime.GOOS { |
| case "nacl", "plan9": |
| t.Skipf("not supported on %s", runtime.GOOS) |
| } |
| |
| c, err := newLocalPacketListener("udp") |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer c.Close() |
| |
| b := []byte("UDP ZERO BYTE BUFFER") |
| for _, genericRead := range []bool{false, true} { |
| n, err := c.WriteTo(b, c.LocalAddr()) |
| if err != nil { |
| t.Fatal(err) |
| } |
| if n != len(b) { |
| t.Errorf("got %d; want %d", n, len(b)) |
| } |
| c.SetReadDeadline(time.Now().Add(100 * time.Millisecond)) |
| if genericRead { |
| _, err = c.(Conn).Read(nil) |
| } else { |
| _, _, err = c.ReadFrom(nil) |
| } |
| switch err { |
| case nil: // ReadFrom succeeds |
| default: // Read may timeout, it depends on the platform |
| if nerr, ok := err.(Error); (!ok || !nerr.Timeout()) && runtime.GOOS != "windows" { // Windows retruns WSAEMSGSIZ |
| t.Fatal(err) |
| } |
| } |
| } |
| } |
