| // 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) { |
| 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") |
| } |
| |
| 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() |
| } |
| } |
