Adding upstream version 1.16.10.upstream/1.16.10upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 446 insertions, 0 deletions

diff --git a/src/net/udpsock_test.go b/src/net/udpsock_test.go
new file mode 100644
index 0000000..327eba6
--- /dev/null
+++ b/src/net/udpsock_test.go
@@ -0,0 +1,446 @@
+// 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.
+
+// +build !js
+
+package net
+
+import (
+	"internal/testenv"
+	"reflect"
+	"runtime"
+	"testing"
+	"time"
+)
+
+func BenchmarkUDP6LinkLocalUnicast(b *testing.B) {
+	testHookUninstaller.Do(uninstallTestHooks)
+
+	if !supportsIPv6() {
+		b.Skip("IPv6 is not supported")
+	}
+	ifi := loopbackInterface()
+	if ifi == nil {
+		b.Skip("loopback interface not found")
+	}
+	lla := ipv6LinkLocalUnicastAddr(ifi)
+	if lla == "" {
+		b.Skip("IPv6 link-local unicast address not found")
+	}
+
+	c1, err := ListenPacket("udp6", JoinHostPort(lla+"%"+ifi.Name, "0"))
+	if err != nil {
+		b.Fatal(err)
+	}
+	defer c1.Close()
+	c2, err := ListenPacket("udp6", JoinHostPort(lla+"%"+ifi.Name, "0"))
+	if err != nil {
+		b.Fatal(err)
+	}
+	defer c2.Close()
+
+	var buf [1]byte
+	for i := 0; i < b.N; i++ {
+		if _, err := c1.WriteTo(buf[:], c2.LocalAddr()); err != nil {
+			b.Fatal(err)
+		}
+		if _, _, err := c2.ReadFrom(buf[:]); err != nil {
+			b.Fatal(err)
+		}
+	}
+}
+
+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")},
+
+	{"udp", "127.0.0.1:domain", &UDPAddr{IP: ParseIP("127.0.0.1"), Port: 53}, nil},
+	{"udp", "[::ffff:127.0.0.1]:domain", &UDPAddr{IP: ParseIP("::ffff:127.0.0.1"), Port: 53}, nil},
+	{"udp", "[2001:db8::1]:domain", &UDPAddr{IP: ParseIP("2001:db8::1"), Port: 53}, nil},
+	{"udp4", "127.0.0.1:domain", &UDPAddr{IP: ParseIP("127.0.0.1"), Port: 53}, nil},
+	{"udp4", "[::ffff:127.0.0.1]:domain", &UDPAddr{IP: ParseIP("127.0.0.1"), Port: 53}, nil},
+	{"udp6", "[2001:db8::1]:domain", &UDPAddr{IP: ParseIP("2001:db8::1"), Port: 53}, nil},
+
+	{"udp4", "[2001:db8::1]:domain", nil, &AddrError{Err: errNoSuitableAddress.Error(), Addr: "2001:db8::1"}},
+	{"udp6", "127.0.0.1:domain", nil, &AddrError{Err: errNoSuitableAddress.Error(), Addr: "127.0.0.1"}},
+	{"udp6", "[::ffff:127.0.0.1]:domain", nil, &AddrError{Err: errNoSuitableAddress.Error(), Addr: "::ffff:127.0.0.1"}},
+}
+
+func TestResolveUDPAddr(t *testing.T) {
+	origTestHookLookupIP := testHookLookupIP
+	defer func() { testHookLookupIP = origTestHookLookupIP }()
+	testHookLookupIP = lookupLocalhost
+
+	for _, tt := range resolveUDPAddrTests {
+		addr, err := ResolveUDPAddr(tt.network, tt.litAddrOrName)
+		if !reflect.DeepEqual(addr, tt.addr) || !reflect.DeepEqual(err, tt.err) {
+			t.Errorf("ResolveUDPAddr(%q, %q) = %#v, %v, want %#v, %v", tt.network, tt.litAddrOrName, addr, err, tt.addr, tt.err)
+			continue
+		}
+		if err == nil {
+			addr2, err := ResolveUDPAddr(addr.Network(), addr.String())
+			if !reflect.DeepEqual(addr2, tt.addr) || err != tt.err {
+				t.Errorf("(%q, %q): ResolveUDPAddr(%q, %q) = %#v, %v, want %#v, %v", tt.network, tt.litAddrOrName, addr.Network(), addr.String(), addr2, err, tt.addr, tt.err)
+			}
+		}
+	}
+}
+
+func TestWriteToUDP(t *testing.T) {
+	switch runtime.GOOS {
+	case "plan9":
+		t.Skipf("not supported on %s", 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)
+	}
+
+	b := []byte("CONNECTED-MODE SOCKET")
+	_, err = c.(*UDPConn).WriteToUDP(b, ra)
+	if err == nil {
+		t.Fatal("should fail")
+	}
+	if err != nil && err.(*OpError).Err != ErrWriteToConnected {
+		t.Fatalf("should fail as ErrWriteToConnected: %v", err)
+	}
+	_, err = c.(*UDPConn).WriteTo(b, ra)
+	if err == nil {
+		t.Fatal("should fail")
+	}
+	if err != nil && err.(*OpError).Err != ErrWriteToConnected {
+		t.Fatalf("should fail as ErrWriteToConnected: %v", err)
+	}
+	_, err = c.Write(b)
+	if err != nil {
+		t.Fatal(err)
+	}
+	_, _, err = c.(*UDPConn).WriteMsgUDP(b, nil, ra)
+	if err == nil {
+		t.Fatal("should fail")
+	}
+	if err != nil && err.(*OpError).Err != ErrWriteToConnected {
+		t.Fatalf("should fail as ErrWriteToConnected: %v", err)
+	}
+	_, _, err = c.(*UDPConn).WriteMsgUDP(b, nil, nil)
+	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)
+	}
+
+	b := []byte("UNCONNECTED-MODE SOCKET")
+	_, err = c.(*UDPConn).WriteToUDP(b, ra)
+	if err != nil {
+		t.Fatal(err)
+	}
+	_, err = c.WriteTo(b, ra)
+	if err != nil {
+		t.Fatal(err)
+	}
+	_, err = c.(*UDPConn).Write(b)
+	if err == nil {
+		t.Fatal("should fail")
+	}
+	_, _, err = c.(*UDPConn).WriteMsgUDP(b, nil, nil)
+	if err == nil {
+		t.Fatal("should fail")
+	}
+	if err != nil && err.(*OpError).Err != errMissingAddress {
+		t.Fatalf("should fail as errMissingAddress: %v", err)
+	}
+	_, _, err = c.(*UDPConn).WriteMsgUDP(b, nil, ra)
+	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) {
+	testenv.MustHaveExternalNetwork(t)
+
+	for _, tt := range udpConnLocalNameTests {
+		c, err := ListenUDP(tt.net, tt.laddr)
+		if err != nil {
+			t.Fatal(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.Fatal(err)
+		}
+		defer c1.Close()
+
+		var la *UDPAddr
+		if laddr != "" {
+			var err error
+			if la, err = ResolveUDPAddr("udp", laddr); err != nil {
+				t.Fatal(err)
+			}
+		}
+		c2, err := DialUDP("udp", la, c1.LocalAddr().(*UDPAddr))
+		if err != nil {
+			t.Fatal(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) {
+	testenv.MustHaveExternalNetwork(t)
+
+	if !supportsIPv6() {
+		t.Skip("IPv6 is not supported")
+	}
+
+	for i, tt := range ipv6LinkLocalUnicastUDPTests {
+		c1, err := ListenPacket(tt.network, tt.address)
+		if err != nil {
+			// It might return "LookupHost returned no
+			// suitable address" error on some platforms.
+			t.Log(err)
+			continue
+		}
+		ls, err := (&packetListener{PacketConn: c1}).newLocalServer()
+		if err != nil {
+			t.Fatal(err)
+		}
+		defer ls.teardown()
+		ch := make(chan error, 1)
+		handler := func(ls *localPacketServer, c PacketConn) { packetTransponder(c, ch) }
+		if err := ls.buildup(handler); err != nil {
+			t.Fatal(err)
+		}
+		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.network, ls.PacketConn.LocalAddr().String())
+		if err != nil {
+			t.Fatal(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.Fatal(err)
+		}
+		b := make([]byte, 32)
+		if _, err := c2.Read(b); err != nil {
+			t.Fatal(err)
+		}
+
+		for err := range ch {
+			t.Errorf("#%d: %v", i, err)
+		}
+	}
+}
+
+func TestUDPZeroBytePayload(t *testing.T) {
+	switch runtime.GOOS {
+	case "plan9":
+		t.Skipf("not supported on %s", runtime.GOOS)
+	case "darwin", "ios":
+		testenv.SkipFlaky(t, 29225)
+	}
+
+	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(30 * time.Second))
+		var b [1]byte
+		var name string
+		if genericRead {
+			_, err = c.(Conn).Read(b[:])
+			name = "Read"
+		} else {
+			_, _, err = c.ReadFrom(b[:])
+			name = "ReadFrom"
+		}
+		if err != nil {
+			t.Errorf("%s of zero byte packet failed: %v", name, err)
+		}
+	}
+}
+
+func TestUDPZeroByteBuffer(t *testing.T) {
+	switch runtime.GOOS {
+	case "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 TEST")
+	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 returns WSAEMSGSIZE
+				t.Fatal(err)
+			}
+		}
+	}
+}
+
+func TestUDPReadSizeError(t *testing.T) {
+	switch runtime.GOOS {
+	case "plan9":
+		t.Skipf("not supported on %s", runtime.GOOS)
+	}
+
+	c1, err := newLocalPacketListener("udp")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer c1.Close()
+
+	c2, err := Dial("udp", c1.LocalAddr().String())
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer c2.Close()
+
+	b1 := []byte("READ SIZE ERROR TEST")
+	for _, genericRead := range []bool{false, true} {
+		n, err := c2.Write(b1)
+		if err != nil {
+			t.Fatal(err)
+		}
+		if n != len(b1) {
+			t.Errorf("got %d; want %d", n, len(b1))
+		}
+		c1.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
+		b2 := make([]byte, len(b1)-1)
+		if genericRead {
+			n, err = c1.(Conn).Read(b2)
+		} else {
+			n, _, err = c1.ReadFrom(b2)
+		}
+		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 returns WSAEMSGSIZE
+				t.Fatal(err)
+			}
+		}
+		if n != len(b1)-1 {
+			t.Fatalf("got %d; want %d", n, len(b1)-1)
+		}
+	}
+}