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gcc/libgo/go/net/unicast_posix_test.go
Ian Lance Taylor 6736ef96ea libgo: Merge to master revision 19184. 
The next revision, 19185, renames several runtime files, and
will be handled in a separate change.

From-SVN: r211328
2014-06-06 22:37:27 +00:00

467 lines
15 KiB
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// Copyright 2011 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 !plan9
package net
import (
"runtime"
"syscall"
"testing"
)
var listenerTests = []struct {
net string
laddr string
ipv6 bool // test with underlying AF_INET6 socket
wildcard bool // test with wildcard address
}{
{net: "tcp", laddr: "", wildcard: true},
{net: "tcp", laddr: "0.0.0.0", wildcard: true},
{net: "tcp", laddr: "[::ffff:0.0.0.0]", wildcard: true},
{net: "tcp", laddr: "[::]", ipv6: true, wildcard: true},
{net: "tcp", laddr: "127.0.0.1"},
{net: "tcp", laddr: "[::ffff:127.0.0.1]"},
{net: "tcp", laddr: "[::1]", ipv6: true},
{net: "tcp4", laddr: "", wildcard: true},
{net: "tcp4", laddr: "0.0.0.0", wildcard: true},
{net: "tcp4", laddr: "[::ffff:0.0.0.0]", wildcard: true},
{net: "tcp4", laddr: "127.0.0.1"},
{net: "tcp4", laddr: "[::ffff:127.0.0.1]"},
{net: "tcp6", laddr: "", ipv6: true, wildcard: true},
{net: "tcp6", laddr: "[::]", ipv6: true, wildcard: true},
{net: "tcp6", laddr: "[::1]", ipv6: true},
}
// TestTCPListener tests both single and double listen to a test
// listener with same address family, same listening address and
// same port.
func TestTCPListener(t *testing.T) {
switch runtime.GOOS {
case "plan9":
t.Skipf("skipping test on %q", runtime.GOOS)
}
for _, tt := range listenerTests {
if tt.wildcard && (testing.Short() || !*testExternal) {
continue
}
if tt.ipv6 && !supportsIPv6 {
continue
}
l1, port := usableListenPort(t, tt.net, tt.laddr)
checkFirstListener(t, tt.net, tt.laddr+":"+port, l1)
l2, err := Listen(tt.net, tt.laddr+":"+port)
checkSecondListener(t, tt.net, tt.laddr+":"+port, err, l2)
l1.Close()
}
}
// TestUDPListener tests both single and double listen to a test
// listener with same address family, same listening address and
// same port.
func TestUDPListener(t *testing.T) {
switch runtime.GOOS {
case "plan9":
t.Skipf("skipping test on %q", runtime.GOOS)
}
toudpnet := func(net string) string {
switch net {
case "tcp":
return "udp"
case "tcp4":
return "udp4"
case "tcp6":
return "udp6"
}
return "<nil>"
}
for _, tt := range listenerTests {
if tt.wildcard && (testing.Short() || !*testExternal) {
continue
}
if tt.ipv6 && !supportsIPv6 {
continue
}
tt.net = toudpnet(tt.net)
l1, port := usableListenPacketPort(t, tt.net, tt.laddr)
checkFirstListener(t, tt.net, tt.laddr+":"+port, l1)
l2, err := ListenPacket(tt.net, tt.laddr+":"+port)
checkSecondListener(t, tt.net, tt.laddr+":"+port, err, l2)
l1.Close()
}
}
var dualStackListenerTests = []struct {
net1 string // first listener
laddr1 string
net2 string // second listener
laddr2 string
wildcard bool // test with wildcard address
xerr error // expected error value, nil or other
}{
// Test cases and expected results for the attemping 2nd listen on the same port
// 1st listen 2nd listen darwin freebsd linux openbsd
// ------------------------------------------------------------------------------------
// "tcp" "" "tcp" "" - - - -
// "tcp" "" "tcp" "0.0.0.0" - - - -
// "tcp" "0.0.0.0" "tcp" "" - - - -
// ------------------------------------------------------------------------------------
// "tcp" "" "tcp" "[::]" - - - ok
// "tcp" "[::]" "tcp" "" - - - ok
// "tcp" "0.0.0.0" "tcp" "[::]" - - - ok
// "tcp" "[::]" "tcp" "0.0.0.0" - - - ok
// "tcp" "[::ffff:0.0.0.0]" "tcp" "[::]" - - - ok
// "tcp" "[::]" "tcp" "[::ffff:0.0.0.0]" - - - ok
// ------------------------------------------------------------------------------------
// "tcp4" "" "tcp6" "" ok ok ok ok
// "tcp6" "" "tcp4" "" ok ok ok ok
// "tcp4" "0.0.0.0" "tcp6" "[::]" ok ok ok ok
// "tcp6" "[::]" "tcp4" "0.0.0.0" ok ok ok ok
// ------------------------------------------------------------------------------------
// "tcp" "127.0.0.1" "tcp" "[::1]" ok ok ok ok
// "tcp" "[::1]" "tcp" "127.0.0.1" ok ok ok ok
// "tcp4" "127.0.0.1" "tcp6" "[::1]" ok ok ok ok
// "tcp6" "[::1]" "tcp4" "127.0.0.1" ok ok ok ok
//
// Platform default configurations:
// darwin, kernel version 11.3.0
// net.inet6.ip6.v6only=0 (overridable by sysctl or IPV6_V6ONLY option)
// freebsd, kernel version 8.2
// net.inet6.ip6.v6only=1 (overridable by sysctl or IPV6_V6ONLY option)
// linux, kernel version 3.0.0
// net.ipv6.bindv6only=0 (overridable by sysctl or IPV6_V6ONLY option)
// openbsd, kernel version 5.0
// net.inet6.ip6.v6only=1 (overriding is prohibited)
{net1: "tcp", laddr1: "", net2: "tcp", laddr2: "", wildcard: true, xerr: syscall.EADDRINUSE},
{net1: "tcp", laddr1: "", net2: "tcp", laddr2: "0.0.0.0", wildcard: true, xerr: syscall.EADDRINUSE},
{net1: "tcp", laddr1: "0.0.0.0", net2: "tcp", laddr2: "", wildcard: true, xerr: syscall.EADDRINUSE},
{net1: "tcp", laddr1: "", net2: "tcp", laddr2: "[::]", wildcard: true, xerr: syscall.EADDRINUSE},
{net1: "tcp", laddr1: "[::]", net2: "tcp", laddr2: "", wildcard: true, xerr: syscall.EADDRINUSE},
{net1: "tcp", laddr1: "0.0.0.0", net2: "tcp", laddr2: "[::]", wildcard: true, xerr: syscall.EADDRINUSE},
{net1: "tcp", laddr1: "[::]", net2: "tcp", laddr2: "0.0.0.0", wildcard: true, xerr: syscall.EADDRINUSE},
{net1: "tcp", laddr1: "[::ffff:0.0.0.0]", net2: "tcp", laddr2: "[::]", wildcard: true, xerr: syscall.EADDRINUSE},
{net1: "tcp", laddr1: "[::]", net2: "tcp", laddr2: "[::ffff:0.0.0.0]", wildcard: true, xerr: syscall.EADDRINUSE},
{net1: "tcp4", laddr1: "", net2: "tcp6", laddr2: "", wildcard: true},
{net1: "tcp6", laddr1: "", net2: "tcp4", laddr2: "", wildcard: true},
{net1: "tcp4", laddr1: "0.0.0.0", net2: "tcp6", laddr2: "[::]", wildcard: true},
{net1: "tcp6", laddr1: "[::]", net2: "tcp4", laddr2: "0.0.0.0", wildcard: true},
{net1: "tcp", laddr1: "127.0.0.1", net2: "tcp", laddr2: "[::1]"},
{net1: "tcp", laddr1: "[::1]", net2: "tcp", laddr2: "127.0.0.1"},
{net1: "tcp4", laddr1: "127.0.0.1", net2: "tcp6", laddr2: "[::1]"},
{net1: "tcp6", laddr1: "[::1]", net2: "tcp4", laddr2: "127.0.0.1"},
}
// TestDualStackTCPListener tests both single and double listen
// to a test listener with various address families, different
// listening address and same port.
func TestDualStackTCPListener(t *testing.T) {
if testing.Short() {
t.Skip("skipping in -short mode, see issue 5001")
}
switch runtime.GOOS {
case "plan9":
t.Skipf("skipping test on %q", runtime.GOOS)
}
if !supportsIPv6 {
t.Skip("ipv6 is not supported")
}
for _, tt := range dualStackListenerTests {
if tt.wildcard && !*testExternal {
continue
}
switch runtime.GOOS {
case "openbsd":
if tt.wildcard && differentWildcardAddr(tt.laddr1, tt.laddr2) {
tt.xerr = nil
}
}
l1, port := usableListenPort(t, tt.net1, tt.laddr1)
laddr := tt.laddr1 + ":" + port
checkFirstListener(t, tt.net1, laddr, l1)
laddr = tt.laddr2 + ":" + port
l2, err := Listen(tt.net2, laddr)
checkDualStackSecondListener(t, tt.net2, laddr, tt.xerr, err, l2)
l1.Close()
}
}
// TestDualStackUDPListener tests both single and double listen
// to a test listener with various address families, differnet
// listening address and same port.
func TestDualStackUDPListener(t *testing.T) {
switch runtime.GOOS {
case "plan9":
t.Skipf("skipping test on %q", runtime.GOOS)
}
if !supportsIPv6 {
t.Skip("ipv6 is not supported")
}
toudpnet := func(net string) string {
switch net {
case "tcp":
return "udp"
case "tcp4":
return "udp4"
case "tcp6":
return "udp6"
}
return "<nil>"
}
for _, tt := range dualStackListenerTests {
if tt.wildcard && (testing.Short() || !*testExternal) {
continue
}
tt.net1 = toudpnet(tt.net1)
tt.net2 = toudpnet(tt.net2)
switch runtime.GOOS {
case "openbsd":
if tt.wildcard && differentWildcardAddr(tt.laddr1, tt.laddr2) {
tt.xerr = nil
}
}
l1, port := usableListenPacketPort(t, tt.net1, tt.laddr1)
laddr := tt.laddr1 + ":" + port
checkFirstListener(t, tt.net1, laddr, l1)
laddr = tt.laddr2 + ":" + port
l2, err := ListenPacket(tt.net2, laddr)
checkDualStackSecondListener(t, tt.net2, laddr, tt.xerr, err, l2)
l1.Close()
}
}
func usableListenPort(t *testing.T, net, laddr string) (l Listener, port string) {
var nladdr string
var err error
switch net {
default:
panic("usableListenPort net=" + net)
case "tcp", "tcp4", "tcp6":
l, err = Listen(net, laddr+":0")
if err != nil {
t.Fatalf("Probe Listen(%q, %q) failed: %v", net, laddr, err)
}
nladdr = l.(*TCPListener).Addr().String()
}
_, port, err = SplitHostPort(nladdr)
if err != nil {
t.Fatalf("SplitHostPort failed: %v", err)
}
return l, port
}
func usableListenPacketPort(t *testing.T, net, laddr string) (l PacketConn, port string) {
var nladdr string
var err error
switch net {
default:
panic("usableListenPacketPort net=" + net)
case "udp", "udp4", "udp6":
l, err = ListenPacket(net, laddr+":0")
if err != nil {
t.Fatalf("Probe ListenPacket(%q, %q) failed: %v", net, laddr, err)
}
nladdr = l.(*UDPConn).LocalAddr().String()
}
_, port, err = SplitHostPort(nladdr)
if err != nil {
t.Fatalf("SplitHostPort failed: %v", err)
}
return l, port
}
func differentWildcardAddr(i, j string) bool {
if (i == "" || i == "0.0.0.0" || i == "::ffff:0.0.0.0") && (j == "" || j == "0.0.0.0" || j == "::ffff:0.0.0.0") {
return false
}
if i == "[::]" && j == "[::]" {
return false
}
return true
}
func checkFirstListener(t *testing.T, net, laddr string, l interface{}) {
switch net {
case "tcp":
fd := l.(*TCPListener).fd
checkDualStackAddrFamily(t, net, laddr, fd)
case "tcp4":
fd := l.(*TCPListener).fd
if fd.family != syscall.AF_INET {
t.Fatalf("First Listen(%q, %q) returns address family %v, expected %v", net, laddr, fd.family, syscall.AF_INET)
}
case "tcp6":
fd := l.(*TCPListener).fd
if fd.family != syscall.AF_INET6 {
t.Fatalf("First Listen(%q, %q) returns address family %v, expected %v", net, laddr, fd.family, syscall.AF_INET6)
}
case "udp":
fd := l.(*UDPConn).fd
checkDualStackAddrFamily(t, net, laddr, fd)
case "udp4":
fd := l.(*UDPConn).fd
if fd.family != syscall.AF_INET {
t.Fatalf("First ListenPacket(%q, %q) returns address family %v, expected %v", net, laddr, fd.family, syscall.AF_INET)
}
case "udp6":
fd := l.(*UDPConn).fd
if fd.family != syscall.AF_INET6 {
t.Fatalf("First ListenPacket(%q, %q) returns address family %v, expected %v", net, laddr, fd.family, syscall.AF_INET6)
}
default:
t.Fatalf("Unexpected network: %q", net)
}
}
func checkSecondListener(t *testing.T, net, laddr string, err error, l interface{}) {
switch net {
case "tcp", "tcp4", "tcp6":
if err == nil {
l.(*TCPListener).Close()
t.Fatalf("Second Listen(%q, %q) should fail", net, laddr)
}
case "udp", "udp4", "udp6":
if err == nil {
l.(*UDPConn).Close()
t.Fatalf("Second ListenPacket(%q, %q) should fail", net, laddr)
}
default:
t.Fatalf("Unexpected network: %q", net)
}
}
func checkDualStackSecondListener(t *testing.T, net, laddr string, xerr, err error, l interface{}) {
switch net {
case "tcp", "tcp4", "tcp6":
if xerr == nil && err != nil || xerr != nil && err == nil {
t.Fatalf("Second Listen(%q, %q) returns %v, expected %v", net, laddr, err, xerr)
}
if err == nil {
l.(*TCPListener).Close()
}
case "udp", "udp4", "udp6":
if xerr == nil && err != nil || xerr != nil && err == nil {
t.Fatalf("Second ListenPacket(%q, %q) returns %v, expected %v", net, laddr, err, xerr)
}
if err == nil {
l.(*UDPConn).Close()
}
default:
t.Fatalf("Unexpected network: %q", net)
}
}
func checkDualStackAddrFamily(t *testing.T, net, laddr string, fd *netFD) {
switch a := fd.laddr.(type) {
case *TCPAddr:
// If a node under test supports both IPv6 capability
// and IPv6 IPv4-mapping capability, we can assume
// that the node listens on a wildcard address with an
// AF_INET6 socket.
if supportsIPv4map && fd.laddr.(*TCPAddr).isWildcard() {
if fd.family != syscall.AF_INET6 {
t.Fatalf("Listen(%q, %q) returns address family %v, expected %v", net, laddr, fd.family, syscall.AF_INET6)
}
} else {
if fd.family != a.family() {
t.Fatalf("Listen(%q, %q) returns address family %v, expected %v", net, laddr, fd.family, a.family())
}
}
case *UDPAddr:
// If a node under test supports both IPv6 capability
// and IPv6 IPv4-mapping capability, we can assume
// that the node listens on a wildcard address with an
// AF_INET6 socket.
if supportsIPv4map && fd.laddr.(*UDPAddr).isWildcard() {
if fd.family != syscall.AF_INET6 {
t.Fatalf("ListenPacket(%q, %q) returns address family %v, expected %v", net, laddr, fd.family, syscall.AF_INET6)
}
} else {
if fd.family != a.family() {
t.Fatalf("ListenPacket(%q, %q) returns address family %v, expected %v", net, laddr, fd.family, a.family())
}
}
default:
t.Fatalf("Unexpected protocol address type: %T", a)
}
}
var prohibitionaryDialArgTests = []struct {
net string
addr string
}{
{"tcp6", "127.0.0.1"},
{"tcp6", "[::ffff:127.0.0.1]"},
}
func TestProhibitionaryDialArgs(t *testing.T) {
switch runtime.GOOS {
case "plan9":
t.Skipf("skipping test on %q", runtime.GOOS)
}
// This test requires both IPv6 and IPv6 IPv4-mapping functionality.
if !supportsIPv4map || testing.Short() || !*testExternal {
return
}
l, port := usableListenPort(t, "tcp", "[::]")
defer l.Close()
for _, tt := range prohibitionaryDialArgTests {
c, err := Dial(tt.net, tt.addr+":"+port)
if err == nil {
c.Close()
t.Fatalf("Dial(%q, %q) should fail", tt.net, tt.addr)
}
}
}
func TestWildWildcardListener(t *testing.T) {
switch runtime.GOOS {
case "plan9":
t.Skipf("skipping test on %q", runtime.GOOS)
}
if testing.Short() || !*testExternal {
t.Skip("skipping test to avoid external network")
}
defer func() {
if p := recover(); p != nil {
t.Fatalf("Listen, ListenPacket or protocol-specific Listen panicked: %v", p)
}
}()
if ln, err := Listen("tcp", ""); err == nil {
ln.Close()
}
if ln, err := ListenPacket("udp", ""); err == nil {
ln.Close()
}
if ln, err := ListenTCP("tcp", nil); err == nil {
ln.Close()
}
if ln, err := ListenUDP("udp", nil); err == nil {
ln.Close()
}
if ln, err := ListenIP("ip:icmp", nil); err == nil {
ln.Close()
}
}
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