Gecko [ 167.86.127.34 ]

Name	Size	Permission
http	[ DIR ]	drwxr-xr-x
internal	[ DIR ]	drwxr-xr-x
mail	[ DIR ]	drwxr-xr-x
rpc	[ DIR ]	drwxr-xr-x
smtp	[ DIR ]	drwxr-xr-x
testdata	[ DIR ]	drwxr-xr-x
textproto	[ DIR ]	drwxr-xr-x
url	[ DIR ]	drwxr-xr-x
addrselect.go	9.51 KB	-rw-r--r--
addrselect_test.go	6.2 KB	-rw-r--r--
cgo_aix.go	578 B	-rw-r--r--
cgo_android.go	268 B	-rw-r--r--
cgo_bsd.go	348 B	-rw-r--r--
cgo_linux.go	635 B	-rw-r--r--
cgo_netbsd.go	272 B	-rw-r--r--
cgo_openbsd.go	272 B	-rw-r--r--
cgo_resnew.go	577 B	-rw-r--r--
cgo_resold.go	571 B	-rw-r--r--
cgo_socknew.go	748 B	-rw-r--r--
cgo_sockold.go	838 B	-rw-r--r--
cgo_solaris.go	339 B	-rw-r--r--
cgo_stub.go	1.06 KB	-rw-r--r--
cgo_unix.go	9.53 KB	-rw-r--r--
cgo_unix_test.go	1.89 KB	-rw-r--r--
cgo_windows.go	398 B	-rw-r--r--
conf.go	8.88 KB	-rw-r--r--
conf_netcgo.go	369 B	-rw-r--r--
conf_test.go	9.59 KB	-rw-r--r--
conn_test.go	1.77 KB	-rw-r--r--
dial.go	22.44 KB	-rw-r--r--
dial_test.go	27 KB	-rw-r--r--
dial_unix_test.go	2.74 KB	-rw-r--r--
dnsclient.go	5.34 KB	-rw-r--r--
dnsclient_test.go	1.54 KB	-rw-r--r--
dnsclient_unix.go	21.86 KB	-rw-r--r--
dnsclient_unix_test.go	45.17 KB	-rw-r--r--
dnsconfig_unix.go	5.47 KB	-rw-r--r--
dnsconfig_unix_test.go	6.73 KB	-rw-r--r--
dnsname_test.go	1.98 KB	-rw-r--r--
error_plan9.go	224 B	-rw-r--r--
error_plan9_test.go	398 B	-rw-r--r--
error_posix.go	583 B	-rw-r--r--
error_posix_test.go	980 B	-rw-r--r--
error_test.go	19.39 KB	-rw-r--r--
error_unix.go	421 B	-rw-r--r--
error_unix_test.go	672 B	-rw-r--r--
error_windows.go	355 B	-rw-r--r--
error_windows_test.go	483 B	-rw-r--r--
example_test.go	3.16 KB	-rw-r--r--
external_test.go	4.07 KB	-rw-r--r--
fd_plan9.go	3.56 KB	-rw-r--r--
fd_unix.go	7.36 KB	-rw-r--r--
fd_windows.go	6.49 KB	-rw-r--r--
file.go	1.69 KB	-rw-r--r--
file_plan9.go	2.68 KB	-rw-r--r--
file_stub.go	485 B	-rw-r--r--
file_test.go	6.53 KB	-rw-r--r--
file_unix.go	2.51 KB	-rw-r--r--
file_windows.go	521 B	-rw-r--r--
hook.go	628 B	-rw-r--r--
hook_plan9.go	283 B	-rw-r--r--
hook_unix.go	734 B	-rw-r--r--
hook_windows.go	875 B	-rw-r--r--
hosts.go	3.1 KB	-rw-r--r--
hosts_test.go	4.65 KB	-rw-r--r--
interface.go	7.14 KB	-rw-r--r--
interface_aix.go	4.41 KB	-rw-r--r--
interface_bsd.go	2.74 KB	-rw-r--r--
interface_bsd_test.go	1.42 KB	-rw-r--r--
interface_bsdvar.go	711 B	-rw-r--r--
interface_darwin.go	1.29 KB	-rw-r--r--
interface_freebsd.go	1.42 KB	-rw-r--r--
interface_linux.go	6.9 KB	-rw-r--r--
interface_linux_test.go	3.65 KB	-rw-r--r--
interface_plan9.go	4.59 KB	-rw-r--r--
interface_solaris.go	2.46 KB	-rw-r--r--
interface_stub.go	808 B	-rw-r--r--
interface_test.go	9.67 KB	-rw-r--r--
interface_unix_test.go	4.69 KB	-rw-r--r--
interface_windows.go	5.41 KB	-rw-r--r--
ip.go	16.61 KB	-rw-r--r--
ip_test.go	23.96 KB	-rw-r--r--
iprawsock.go	7.08 KB	-rw-r--r--
iprawsock_plan9.go	874 B	-rw-r--r--
iprawsock_posix.go	3.45 KB	-rw-r--r--
iprawsock_test.go	5.62 KB	-rw-r--r--
ipsock.go	8.77 KB	-rw-r--r--
ipsock_plan9.go	6.25 KB	-rw-r--r--
ipsock_posix.go	6.16 KB	-rw-r--r--
ipsock_test.go	6.81 KB	-rw-r--r--
listen_test.go	21.32 KB	-rw-r--r--
lookup.go	15.45 KB	-rw-r--r--
lookup_fake.go	1.64 KB	-rw-r--r--
lookup_plan9.go	7.68 KB	-rw-r--r--
lookup_test.go	29.14 KB	-rw-r--r--
lookup_unix.go	8.78 KB	-rw-r--r--
lookup_windows.go	11.74 KB	-rw-r--r--
lookup_windows_test.go	8 KB	-rw-r--r--
mac.go	1.88 KB	-rw-r--r--
mac_test.go	3.26 KB	-rw-r--r--
main_cloexec_test.go	669 B	-rw-r--r--
main_conf_test.go	915 B	-rw-r--r--
main_noconf_test.go	493 B	-rw-r--r--
main_plan9_test.go	392 B	-rw-r--r--
main_posix_test.go	1.37 KB	-rw-r--r--
main_test.go	7.11 KB	-rw-r--r--
main_unix_test.go	1.24 KB	-rw-r--r--
main_windows_test.go	1.08 KB	-rw-r--r--
mockserver_test.go	11.23 KB	-rw-r--r--
net.go	20.9 KB	-rw-r--r--
net_fake.go	5.34 KB	-rw-r--r--
net_test.go	12.1 KB	-rw-r--r--
net_windows_test.go	15.94 KB	-rw-r--r--
netgo_unix_test.go	631 B	-rw-r--r--
nss.go	3.71 KB	-rw-r--r--
nss_test.go	3.33 KB	-rw-r--r--
packetconn_test.go	3.56 KB	-rw-r--r--
parse.go	7.82 KB	-rw-r--r--
parse_test.go	2.14 KB	-rw-r--r--
pipe.go	5.59 KB	-rw-r--r--
pipe_test.go	1.2 KB	-rw-r--r--
platform_test.go	4.59 KB	-rw-r--r--
port.go	1.46 KB	-rw-r--r--
port_test.go	1.34 KB	-rw-r--r--
port_unix.go	1.28 KB	-rw-r--r--
protoconn_test.go	7.22 KB	-rw-r--r--
rawconn.go	1.89 KB	-rw-r--r--
rawconn_stub_test.go	622 B	-rw-r--r--
rawconn_test.go	4.52 KB	-rw-r--r--
rawconn_unix_test.go	3.15 KB	-rw-r--r--
rawconn_windows_test.go	3.26 KB	-rw-r--r--
sendfile_linux.go	1.1 KB	-rw-r--r--
sendfile_stub.go	329 B	-rw-r--r--
sendfile_test.go	5.69 KB	-rw-r--r--
sendfile_unix_alt.go	1.98 KB	-rw-r--r--
sendfile_windows.go	1.02 KB	-rw-r--r--
server_test.go	11.55 KB	-rw-r--r--
sock_bsd.go	898 B	-rw-r--r--
sock_cloexec.go	1.46 KB	-rw-r--r--
sock_linux.go	644 B	-rw-r--r--
sock_plan9.go	262 B	-rw-r--r--
sock_posix.go	6.83 KB	-rw-r--r--
sock_stub.go	378 B	-rw-r--r--
sock_windows.go	1.16 KB	-rw-r--r--
sockaddr_posix.go	955 B	-rw-r--r--
sockopt_aix.go	1.32 KB	-rw-r--r--
sockopt_bsd.go	2.09 KB	-rw-r--r--
sockopt_linux.go	1.14 KB	-rw-r--r--
sockopt_plan9.go	406 B	-rw-r--r--
sockopt_posix.go	2.67 KB	-rw-r--r--
sockopt_solaris.go	1.14 KB	-rw-r--r--
sockopt_stub.go	738 B	-rw-r--r--
sockopt_windows.go	1.34 KB	-rw-r--r--
sockoptip_bsdvar.go	848 B	-rw-r--r--
sockoptip_linux.go	735 B	-rw-r--r--
sockoptip_posix.go	1.43 KB	-rw-r--r--
sockoptip_stub.go	949 B	-rw-r--r--
sockoptip_windows.go	819 B	-rw-r--r--
splice_linux.go	1.09 KB	-rw-r--r--
splice_stub.go	286 B	-rw-r--r--
splice_test.go	10.51 KB	-rw-r--r--
sys_cloexec.go	977 B	-rw-r--r--
tcpsock.go	9.85 KB	-rw-r--r--
tcpsock_plan9.go	2.13 KB	-rw-r--r--
tcpsock_posix.go	5.27 KB	-rw-r--r--
tcpsock_test.go	17.51 KB	-rw-r--r--
tcpsock_unix_test.go	2.38 KB	-rw-r--r--
tcpsockopt_darwin.go	770 B	-rw-r--r--
tcpsockopt_dragonfly.go	698 B	-rw-r--r--
tcpsockopt_openbsd.go	365 B	-rw-r--r--
tcpsockopt_plan9.go	503 B	-rw-r--r--
tcpsockopt_posix.go	491 B	-rw-r--r--
tcpsockopt_solaris.go	1.15 KB	-rw-r--r--
tcpsockopt_stub.go	393 B	-rw-r--r--
tcpsockopt_unix.go	712 B	-rw-r--r--
tcpsockopt_windows.go	741 B	-rw-r--r--
timeout_test.go	23.18 KB	-rw-r--r--
udpsock.go	8.7 KB	-rw-r--r--
udpsock_plan9.go	3.77 KB	-rw-r--r--
udpsock_plan9_test.go	1.31 KB	-rw-r--r--
udpsock_posix.go	4.09 KB	-rw-r--r--
udpsock_test.go	11.18 KB	-rw-r--r--
unixsock.go	10.17 KB	-rw-r--r--
unixsock_linux_test.go	2.29 KB	-rw-r--r--
unixsock_plan9.go	1.24 KB	-rw-r--r--
unixsock_posix.go	5.81 KB	-rw-r--r--
unixsock_test.go	10.58 KB	-rw-r--r--
unixsock_windows_test.go	2.07 KB	-rw-r--r--
write_unix_test.go	1.59 KB	-rw-r--r--
writev_test.go	5.01 KB	-rw-r--r--
writev_unix.go	706 B	-rw-r--r--

Code Editor : udpsock_test.go

// 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":
		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)
		}
	}
}

${this.title}

Code Editor : udpsock_test.go