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Current Path: /opt/golang/1.17.2/src/net

📁 ..
📄 addrselect.go(9.59 KB)
📄 addrselect_test.go(6.28 KB)
📄 cgo_aix.go(603 B)
📄 cgo_android.go(293 B)
📄 cgo_bsd.go(419 B)
📄 cgo_linux.go(672 B)
📄 cgo_netbsd.go(297 B)
📄 cgo_openbsd.go(297 B)
📄 cgo_resnew.go(668 B)
📄 cgo_resold.go(654 B)
📄 cgo_socknew.go(816 B)
📄 cgo_sockold.go(937 B)
📄 cgo_solaris.go(364 B)
📄 cgo_stub.go(1.08 KB)
📄 cgo_unix.go(9.65 KB)
📄 cgo_unix_test.go(2.01 KB)
📄 cgo_windows.go(423 B)
📄 conf.go(8.78 KB)
📄 conf_netcgo.go(387 B)
📄 conf_test.go(9.76 KB)
📄 conn_test.go(1.79 KB)
📄 dial.go(22.72 KB)
📄 dial_test.go(26.02 KB)
📄 dial_unix_test.go(2.83 KB)
📄 dnsclient.go(5.73 KB)
📄 dnsclient_test.go(1.51 KB)
📄 dnsclient_unix.go(22.12 KB)
📄 dnsclient_unix_test.go(54.46 KB)
📄 dnsconfig_unix.go(5.56 KB)
📄 dnsconfig_unix_test.go(6.83 KB)
📄 dnsname_test.go(1.99 KB)
📄 error_plan9.go(224 B)
📄 error_plan9_test.go(398 B)
📄 error_posix.go(700 B)
📄 error_posix_test.go(998 B)
📄 error_test.go(19.59 KB)
📄 error_unix.go(517 B)
📄 error_unix_test.go(702 B)
📄 error_windows.go(355 B)
📄 error_windows_test.go(483 B)
📄 example_test.go(3.88 KB)
📄 external_test.go(4.08 KB)
📄 fcntl_libc_test.go(400 B)
📄 fcntl_syscall_test.go(545 B)
📄 fd_plan9.go(3.56 KB)
📄 fd_posix.go(2.58 KB)
📄 fd_unix.go(5.54 KB)
📄 fd_windows.go(4.62 KB)
📄 file.go(1.69 KB)
📄 file_plan9.go(2.68 KB)
📄 file_stub.go(507 B)
📄 file_test.go(6.55 KB)
📄 file_unix.go(2.6 KB)
📄 file_windows.go(521 B)
📄 hook.go(628 B)
📄 hook_plan9.go(283 B)
📄 hook_unix.go(840 B)
📄 hook_windows.go(875 B)
📄 hosts.go(3.1 KB)
📄 hosts_test.go(4.59 KB)
📁 http
📄 interface.go(7.17 KB)
📄 interface_aix.go(4.41 KB)
📄 interface_bsd.go(2.8 KB)
📄 interface_bsd_test.go(1.48 KB)
📄 interface_bsdvar.go(753 B)
📄 interface_darwin.go(1.29 KB)
📄 interface_freebsd.go(1.42 KB)
📄 interface_linux.go(6.9 KB)
📄 interface_linux_test.go(3.65 KB)
📄 interface_plan9.go(4.68 KB)
📄 interface_solaris.go(2.07 KB)
📄 interface_stub.go(830 B)
📄 interface_test.go(9.68 KB)
📄 interface_unix_test.go(4.79 KB)
📄 interface_windows.go(5.41 KB)
📁 internal
📄 ip.go(17.66 KB)
📄 ip_test.go(25.33 KB)
📄 iprawsock.go(7.08 KB)
📄 iprawsock_plan9.go(874 B)
📄 iprawsock_posix.go(3.56 KB)
📄 iprawsock_test.go(5.63 KB)
📄 ipsock.go(8.97 KB)
📄 ipsock_plan9.go(7.5 KB)
📄 ipsock_plan9_test.go(645 B)
📄 ipsock_posix.go(6.28 KB)
📄 ipsock_test.go(6.81 KB)
📄 listen_test.go(21.34 KB)
📄 lookup.go(21.33 KB)
📄 lookup_fake.go(1.66 KB)
📄 lookup_plan9.go(7.68 KB)
📄 lookup_test.go(31.13 KB)
📄 lookup_unix.go(8.89 KB)
📄 lookup_windows.go(11.72 KB)
📄 lookup_windows_test.go(8.02 KB)
📄 mac.go(1.88 KB)
📄 mac_test.go(3.26 KB)
📁 mail
📄 main_cloexec_test.go(750 B)
📄 main_conf_test.go(952 B)
📄 main_noconf_test.go(537 B)
📄 main_plan9_test.go(392 B)
📄 main_posix_test.go(1.4 KB)
📄 main_test.go(7.13 KB)
📄 main_unix_test.go(1.33 KB)
📄 main_windows_test.go(1.08 KB)
📄 mockserver_test.go(11.39 KB)
📄 net.go(22.37 KB)
📄 net_fake.go(5.37 KB)
📄 net_test.go(13.88 KB)
📄 net_windows_test.go(15.94 KB)
📄 netgo_unix_test.go(741 B)
📄 nss.go(3.8 KB)
📄 nss_test.go(3.42 KB)
📄 packetconn_test.go(3.57 KB)
📄 parse.go(7.33 KB)
📄 parse_test.go(2.14 KB)
📄 pipe.go(5.43 KB)
📄 pipe_test.go(1.2 KB)
📄 platform_test.go(4.57 KB)
📄 port.go(1.46 KB)
📄 port_test.go(1.34 KB)
📄 port_unix.go(1.39 KB)
📄 protoconn_test.go(7.24 KB)
📄 rawconn.go(1.89 KB)
📄 rawconn_stub_test.go(655 B)
📄 rawconn_test.go(4.45 KB)
📄 rawconn_unix_test.go(3.1 KB)
📄 rawconn_windows_test.go(3.12 KB)
📁 rpc
📄 sendfile_linux.go(1.1 KB)
📄 sendfile_stub.go(391 B)
📄 sendfile_test.go(6.91 KB)
📄 sendfile_unix_alt.go(2.02 KB)
📄 sendfile_windows.go(1.02 KB)
📄 server_test.go(11.11 KB)
📁 smtp
📄 sock_bsd.go(968 B)
📄 sock_cloexec.go(1.53 KB)
📄 sock_linux.go(1.53 KB)
📄 sock_linux_test.go(545 B)
📄 sock_plan9.go(262 B)
📄 sock_posix.go(6.92 KB)
📄 sock_stub.go(420 B)
📄 sock_windows.go(1.16 KB)
📄 sockaddr_posix.go(1.05 KB)
📄 sockopt_aix.go(1.43 KB)
📄 sockopt_bsd.go(2.26 KB)
📄 sockopt_linux.go(1.25 KB)
📄 sockopt_plan9.go(406 B)
📄 sockopt_posix.go(2.76 KB)
📄 sockopt_solaris.go(1.25 KB)
📄 sockopt_stub.go(760 B)
📄 sockopt_windows.go(1.51 KB)
📄 sockoptip_bsdvar.go(929 B)
📄 sockoptip_linux.go(735 B)
📄 sockoptip_posix.go(1.53 KB)
📄 sockoptip_stub.go(971 B)
📄 sockoptip_windows.go(819 B)
📄 splice_linux.go(1.09 KB)
📄 splice_stub.go(304 B)
📄 splice_test.go(10.51 KB)
📄 sys_cloexec.go(1 KB)
📄 tcpsock.go(9.88 KB)
📄 tcpsock_plan9.go(2.13 KB)
📄 tcpsock_posix.go(5.39 KB)
📄 tcpsock_test.go(17.53 KB)
📄 tcpsock_unix_test.go(2.41 KB)
📄 tcpsockopt_darwin.go(770 B)
📄 tcpsockopt_dragonfly.go(698 B)
📄 tcpsockopt_openbsd.go(365 B)
📄 tcpsockopt_plan9.go(525 B)
📄 tcpsockopt_posix.go(592 B)
📄 tcpsockopt_solaris.go(1.15 KB)
📄 tcpsockopt_stub.go(415 B)
📄 tcpsockopt_unix.go(757 B)
📄 tcpsockopt_windows.go(741 B)
📁 testdata
📁 textproto
📄 timeout_test.go(23.39 KB)
📄 udpsock.go(9.19 KB)
📄 udpsock_plan9.go(3.79 KB)
📄 udpsock_plan9_test.go(1.31 KB)
📄 udpsock_posix.go(4.27 KB)
📄 udpsock_test.go(12.27 KB)
📄 unixsock.go(10.17 KB)
📄 unixsock_linux_test.go(2.29 KB)
📄 unixsock_plan9.go(1.24 KB)
📄 unixsock_posix.go(6.03 KB)
📄 unixsock_readmsg_cloexec.go(691 B)
📄 unixsock_readmsg_cmsg_cloexec.go(373 B)
📄 unixsock_readmsg_other.go(301 B)
📄 unixsock_readmsg_test.go(2.62 KB)
📄 unixsock_test.go(10.56 KB)
📄 unixsock_windows_test.go(2.09 KB)
📁 url
📄 write_unix_test.go(1.67 KB)
📄 writev_test.go(5.02 KB)
📄 writev_unix.go(797 B)

Editing: interface_test.go

// 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.

//go:build !js
// +build !js

package net

import (
	"fmt"
	"reflect"
	"runtime"
	"testing"
)

// loopbackInterface returns an available logical network interface
// for loopback tests. It returns nil if no suitable interface is
// found.
func loopbackInterface() *Interface {
	ift, err := Interfaces()
	if err != nil {
		return nil
	}
	for _, ifi := range ift {
		if ifi.Flags&FlagLoopback != 0 && ifi.Flags&FlagUp != 0 {
			return &ifi
		}
	}
	return nil
}

// ipv6LinkLocalUnicastAddr returns an IPv6 link-local unicast address
// on the given network interface for tests. It returns "" if no
// suitable address is found.
func ipv6LinkLocalUnicastAddr(ifi *Interface) string {
	if ifi == nil {
		return ""
	}
	ifat, err := ifi.Addrs()
	if err != nil {
		return ""
	}
	for _, ifa := range ifat {
		if ifa, ok := ifa.(*IPNet); ok {
			if ifa.IP.To4() == nil && ifa.IP.IsLinkLocalUnicast() {
				return ifa.IP.String()
			}
		}
	}
	return ""
}

func TestInterfaces(t *testing.T) {
	ift, err := Interfaces()
	if err != nil {
		t.Fatal(err)
	}
	for _, ifi := range ift {
		ifxi, err := InterfaceByIndex(ifi.Index)
		if err != nil {
			t.Fatal(err)
		}
		switch runtime.GOOS {
		case "solaris", "illumos":
			if ifxi.Index != ifi.Index {
				t.Errorf("got %v; want %v", ifxi, ifi)
			}
		default:
			if !reflect.DeepEqual(ifxi, &ifi) {
				t.Errorf("got %v; want %v", ifxi, ifi)
			}
		}
		ifxn, err := InterfaceByName(ifi.Name)
		if err != nil {
			t.Fatal(err)
		}
		if !reflect.DeepEqual(ifxn, &ifi) {
			t.Errorf("got %v; want %v", ifxn, ifi)
		}
		t.Logf("%s: flags=%v index=%d mtu=%d hwaddr=%v", ifi.Name, ifi.Flags, ifi.Index, ifi.MTU, ifi.HardwareAddr)
	}
}

func TestInterfaceAddrs(t *testing.T) {
	ift, err := Interfaces()
	if err != nil {
		t.Fatal(err)
	}
	ifStats := interfaceStats(ift)
	ifat, err := InterfaceAddrs()
	if err != nil {
		t.Fatal(err)
	}
	uniStats, err := validateInterfaceUnicastAddrs(ifat)
	if err != nil {
		t.Fatal(err)
	}
	if err := checkUnicastStats(ifStats, uniStats); err != nil {
		t.Fatal(err)
	}
}

func TestInterfaceUnicastAddrs(t *testing.T) {
	ift, err := Interfaces()
	if err != nil {
		t.Fatal(err)
	}
	ifStats := interfaceStats(ift)
	if err != nil {
		t.Fatal(err)
	}
	var uniStats routeStats
	for _, ifi := range ift {
		ifat, err := ifi.Addrs()
		if err != nil {
			t.Fatal(ifi, err)
		}
		stats, err := validateInterfaceUnicastAddrs(ifat)
		if err != nil {
			t.Fatal(ifi, err)
		}
		uniStats.ipv4 += stats.ipv4
		uniStats.ipv6 += stats.ipv6
	}
	if err := checkUnicastStats(ifStats, &uniStats); err != nil {
		t.Fatal(err)
	}
}

func TestInterfaceMulticastAddrs(t *testing.T) {
	ift, err := Interfaces()
	if err != nil {
		t.Fatal(err)
	}
	ifStats := interfaceStats(ift)
	ifat, err := InterfaceAddrs()
	if err != nil {
		t.Fatal(err)
	}
	uniStats, err := validateInterfaceUnicastAddrs(ifat)
	if err != nil {
		t.Fatal(err)
	}
	var multiStats routeStats
	for _, ifi := range ift {
		ifmat, err := ifi.MulticastAddrs()
		if err != nil {
			t.Fatal(ifi, err)
		}
		stats, err := validateInterfaceMulticastAddrs(ifmat)
		if err != nil {
			t.Fatal(ifi, err)
		}
		multiStats.ipv4 += stats.ipv4
		multiStats.ipv6 += stats.ipv6
	}
	if err := checkMulticastStats(ifStats, uniStats, &multiStats); err != nil {
		t.Fatal(err)
	}
}

type ifStats struct {
	loop  int // # of active loopback interfaces
	other int // # of active other interfaces
}

func interfaceStats(ift []Interface) *ifStats {
	var stats ifStats
	for _, ifi := range ift {
		if ifi.Flags&FlagUp != 0 {
			if ifi.Flags&FlagLoopback != 0 {
				stats.loop++
			} else {
				stats.other++
			}
		}
	}
	return &stats
}

type routeStats struct {
	ipv4, ipv6 int // # of active connected unicast, anycast or multicast routes
}

func validateInterfaceUnicastAddrs(ifat []Addr) (*routeStats, error) {
	// Note: BSD variants allow assigning any IPv4/IPv6 address
	// prefix to IP interface. For example,
	//   - 0.0.0.0/0 through 255.255.255.255/32
	//   - ::/0 through ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff/128
	// In other words, there is no tightly-coupled combination of
	// interface address prefixes and connected routes.
	stats := new(routeStats)
	for _, ifa := range ifat {
		switch ifa := ifa.(type) {
		case *IPNet:
			if ifa == nil || ifa.IP == nil || ifa.IP.IsMulticast() || ifa.Mask == nil {
				return nil, fmt.Errorf("unexpected value: %#v", ifa)
			}
			if len(ifa.IP) != IPv6len {
				return nil, fmt.Errorf("should be internal representation either IPv6 or IPv4-mapped IPv6 address: %#v", ifa)
			}
			prefixLen, maxPrefixLen := ifa.Mask.Size()
			if ifa.IP.To4() != nil {
				if 0 >= prefixLen || prefixLen > 8*IPv4len || maxPrefixLen != 8*IPv4len {
					return nil, fmt.Errorf("unexpected prefix length: %d/%d for %#v", prefixLen, maxPrefixLen, ifa)
				}
				if ifa.IP.IsLoopback() && prefixLen < 8 { // see RFC 1122
					return nil, fmt.Errorf("unexpected prefix length: %d/%d for %#v", prefixLen, maxPrefixLen, ifa)
				}
				stats.ipv4++
			}
			if ifa.IP.To16() != nil && ifa.IP.To4() == nil {
				if 0 >= prefixLen || prefixLen > 8*IPv6len || maxPrefixLen != 8*IPv6len {
					return nil, fmt.Errorf("unexpected prefix length: %d/%d for %#v", prefixLen, maxPrefixLen, ifa)
				}
				if ifa.IP.IsLoopback() && prefixLen != 8*IPv6len { // see RFC 4291
					return nil, fmt.Errorf("unexpected prefix length: %d/%d for %#v", prefixLen, maxPrefixLen, ifa)
				}
				stats.ipv6++
			}
		case *IPAddr:
			if ifa == nil || ifa.IP == nil || ifa.IP.IsMulticast() {
				return nil, fmt.Errorf("unexpected value: %#v", ifa)
			}
			if len(ifa.IP) != IPv6len {
				return nil, fmt.Errorf("should be internal representation either IPv6 or IPv4-mapped IPv6 address: %#v", ifa)
			}
			if ifa.IP.To4() != nil {
				stats.ipv4++
			}
			if ifa.IP.To16() != nil && ifa.IP.To4() == nil {
				stats.ipv6++
			}
		default:
			return nil, fmt.Errorf("unexpected type: %T", ifa)
		}
	}
	return stats, nil
}

func validateInterfaceMulticastAddrs(ifat []Addr) (*routeStats, error) {
	stats := new(routeStats)
	for _, ifa := range ifat {
		switch ifa := ifa.(type) {
		case *IPAddr:
			if ifa == nil || ifa.IP == nil || ifa.IP.IsUnspecified() || !ifa.IP.IsMulticast() {
				return nil, fmt.Errorf("unexpected value: %#v", ifa)
			}
			if len(ifa.IP) != IPv6len {
				return nil, fmt.Errorf("should be internal representation either IPv6 or IPv4-mapped IPv6 address: %#v", ifa)
			}
			if ifa.IP.To4() != nil {
				stats.ipv4++
			}
			if ifa.IP.To16() != nil && ifa.IP.To4() == nil {
				stats.ipv6++
			}
		default:
			return nil, fmt.Errorf("unexpected type: %T", ifa)
		}
	}
	return stats, nil
}

func checkUnicastStats(ifStats *ifStats, uniStats *routeStats) error {
	// Test the existence of connected unicast routes for IPv4.
	if supportsIPv4() && ifStats.loop+ifStats.other > 0 && uniStats.ipv4 == 0 {
		return fmt.Errorf("num IPv4 unicast routes = 0; want >0; summary: %+v, %+v", ifStats, uniStats)
	}
	// Test the existence of connected unicast routes for IPv6.
	// We can assume the existence of ::1/128 when at least one
	// loopback interface is installed.
	if supportsIPv6() && ifStats.loop > 0 && uniStats.ipv6 == 0 {
		return fmt.Errorf("num IPv6 unicast routes = 0; want >0; summary: %+v, %+v", ifStats, uniStats)
	}
	return nil
}

func checkMulticastStats(ifStats *ifStats, uniStats, multiStats *routeStats) error {
	switch runtime.GOOS {
	case "aix", "dragonfly", "netbsd", "openbsd", "plan9", "solaris", "illumos":
	default:
		// Test the existence of connected multicast route
		// clones for IPv4. Unlike IPv6, IPv4 multicast
		// capability is not a mandatory feature, and so IPv4
		// multicast validation is ignored and we only check
		// IPv6 below.
		//
		// Test the existence of connected multicast route
		// clones for IPv6. Some platform never uses loopback
		// interface as the nexthop for multicast routing.
		// We can assume the existence of connected multicast
		// route clones when at least two connected unicast
		// routes, ::1/128 and other, are installed.
		if supportsIPv6() && ifStats.loop > 0 && uniStats.ipv6 > 1 && multiStats.ipv6 == 0 {
			return fmt.Errorf("num IPv6 multicast route clones = 0; want >0; summary: %+v, %+v, %+v", ifStats, uniStats, multiStats)
		}
	}
	return nil
}

func BenchmarkInterfaces(b *testing.B) {
	testHookUninstaller.Do(uninstallTestHooks)

for i := 0; i < b.N; i++ {
		if _, err := Interfaces(); err != nil {
			b.Fatal(err)
		}
	}
}

func BenchmarkInterfaceByIndex(b *testing.B) {
	testHookUninstaller.Do(uninstallTestHooks)

ifi := loopbackInterface()
	if ifi == nil {
		b.Skip("loopback interface not found")
	}
	for i := 0; i < b.N; i++ {
		if _, err := InterfaceByIndex(ifi.Index); err != nil {
			b.Fatal(err)
		}
	}
}

func BenchmarkInterfaceByName(b *testing.B) {
	testHookUninstaller.Do(uninstallTestHooks)

ifi := loopbackInterface()
	if ifi == nil {
		b.Skip("loopback interface not found")
	}
	for i := 0; i < b.N; i++ {
		if _, err := InterfaceByName(ifi.Name); err != nil {
			b.Fatal(err)
		}
	}
}

func BenchmarkInterfaceAddrs(b *testing.B) {
	testHookUninstaller.Do(uninstallTestHooks)

for i := 0; i < b.N; i++ {
		if _, err := InterfaceAddrs(); err != nil {
			b.Fatal(err)
		}
	}
}

func BenchmarkInterfacesAndAddrs(b *testing.B) {
	testHookUninstaller.Do(uninstallTestHooks)

ifi := loopbackInterface()
	if ifi == nil {
		b.Skip("loopback interface not found")
	}
	for i := 0; i < b.N; i++ {
		if _, err := ifi.Addrs(); err != nil {
			b.Fatal(err)
		}
	}
}

func BenchmarkInterfacesAndMulticastAddrs(b *testing.B) {
	testHookUninstaller.Do(uninstallTestHooks)

ifi := loopbackInterface()
	if ifi == nil {
		b.Skip("loopback interface not found")
	}
	for i := 0; i < b.N; i++ {
		if _, err := ifi.MulticastAddrs(); err != nil {
			b.Fatal(err)
		}
	}
}

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Editing: interface_test.go

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