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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: lookup_windows_test.go

// Copyright 2009 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.

package net

import (
	"bytes"
	"encoding/json"
	"errors"
	"fmt"
	"internal/testenv"
	"os/exec"
	"reflect"
	"regexp"
	"sort"
	"strings"
	"testing"
)

var nslookupTestServers = []string{"mail.golang.com", "gmail.com"}
var lookupTestIPs = []string{"8.8.8.8", "1.1.1.1"}

func toJson(v interface{}) string {
	data, _ := json.Marshal(v)
	return string(data)
}

func TestNSLookupMX(t *testing.T) {
	testenv.MustHaveExternalNetwork(t)

for _, server := range nslookupTestServers {
		mx, err := LookupMX(server)
		if err != nil {
			t.Error(err)
			continue
		}
		if len(mx) == 0 {
			t.Errorf("no results")
			continue
		}
		expected, err := nslookupMX(server)
		if err != nil {
			t.Logf("skipping failed nslookup %s test: %s", server, err)
		}
		sort.Sort(byPrefAndHost(expected))
		sort.Sort(byPrefAndHost(mx))
		if !reflect.DeepEqual(expected, mx) {
			t.Errorf("different results %s:\texp:%v\tgot:%v", server, toJson(expected), toJson(mx))
		}
	}
}

func TestNSLookupCNAME(t *testing.T) {
	testenv.MustHaveExternalNetwork(t)

for _, server := range nslookupTestServers {
		cname, err := LookupCNAME(server)
		if err != nil {
			t.Errorf("failed %s: %s", server, err)
			continue
		}
		if cname == "" {
			t.Errorf("no result %s", server)
		}
		expected, err := nslookupCNAME(server)
		if err != nil {
			t.Logf("skipping failed nslookup %s test: %s", server, err)
			continue
		}
		if expected != cname {
			t.Errorf("different results %s:\texp:%v\tgot:%v", server, expected, cname)
		}
	}
}

func TestNSLookupNS(t *testing.T) {
	testenv.MustHaveExternalNetwork(t)

for _, server := range nslookupTestServers {
		ns, err := LookupNS(server)
		if err != nil {
			t.Errorf("failed %s: %s", server, err)
			continue
		}
		if len(ns) == 0 {
			t.Errorf("no results")
			continue
		}
		expected, err := nslookupNS(server)
		if err != nil {
			t.Logf("skipping failed nslookup %s test: %s", server, err)
			continue
		}
		sort.Sort(byHost(expected))
		sort.Sort(byHost(ns))
		if !reflect.DeepEqual(expected, ns) {
			t.Errorf("different results %s:\texp:%v\tgot:%v", toJson(server), toJson(expected), ns)
		}
	}
}

func TestNSLookupTXT(t *testing.T) {
	testenv.MustHaveExternalNetwork(t)

for _, server := range nslookupTestServers {
		txt, err := LookupTXT(server)
		if err != nil {
			t.Errorf("failed %s: %s", server, err)
			continue
		}
		if len(txt) == 0 {
			t.Errorf("no results")
			continue
		}
		expected, err := nslookupTXT(server)
		if err != nil {
			t.Logf("skipping failed nslookup %s test: %s", server, err)
			continue
		}
		sort.Strings(expected)
		sort.Strings(txt)
		if !reflect.DeepEqual(expected, txt) {
			t.Errorf("different results %s:\texp:%v\tgot:%v", server, toJson(expected), toJson(txt))
		}
	}
}

func TestLookupLocalPTR(t *testing.T) {
	testenv.MustHaveExternalNetwork(t)

addr, err := localIP()
	if err != nil {
		t.Errorf("failed to get local ip: %s", err)
	}
	names, err := LookupAddr(addr.String())
	if err != nil {
		t.Errorf("failed %s: %s", addr, err)
	}
	if len(names) == 0 {
		t.Errorf("no results")
	}
	expected, err := lookupPTR(addr.String())
	if err != nil {
		t.Logf("skipping failed lookup %s test: %s", addr.String(), err)
	}
	sort.Strings(expected)
	sort.Strings(names)
	if !reflect.DeepEqual(expected, names) {
		t.Errorf("different results %s:\texp:%v\tgot:%v", addr, toJson(expected), toJson(names))
	}
}

func TestLookupPTR(t *testing.T) {
	testenv.MustHaveExternalNetwork(t)

for _, addr := range lookupTestIPs {
		names, err := LookupAddr(addr)
		if err != nil {
			t.Errorf("failed %s: %s", addr, err)
		}
		if len(names) == 0 {
			t.Errorf("no results")
		}
		expected, err := lookupPTR(addr)
		if err != nil {
			t.Logf("skipping failed lookup %s test: %s", addr, err)
		}
		sort.Strings(expected)
		sort.Strings(names)
		if !reflect.DeepEqual(expected, names) {
			t.Errorf("different results %s:\texp:%v\tgot:%v", addr, toJson(expected), toJson(names))
		}
	}
}

type byPrefAndHost []*MX

func (s byPrefAndHost) Len() int { return len(s) }
func (s byPrefAndHost) Less(i, j int) bool {
	if s[i].Pref != s[j].Pref {
		return s[i].Pref < s[j].Pref
	}
	return s[i].Host < s[j].Host
}
func (s byPrefAndHost) Swap(i, j int) { s[i], s[j] = s[j], s[i] }

type byHost []*NS

func (s byHost) Len() int           { return len(s) }
func (s byHost) Less(i, j int) bool { return s[i].Host < s[j].Host }
func (s byHost) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }

func nslookup(qtype, name string) (string, error) {
	var out bytes.Buffer
	var err bytes.Buffer
	cmd := exec.Command("nslookup", "-querytype="+qtype, name)
	cmd.Stdout = &out
	cmd.Stderr = &err
	if err := cmd.Run(); err != nil {
		return "", err
	}
	r := strings.ReplaceAll(out.String(), "\r\n", "\n")
	// nslookup stderr output contains also debug information such as
	// "Non-authoritative answer" and it doesn't return the correct errcode
	if strings.Contains(err.String(), "can't find") {
		return r, errors.New(err.String())
	}
	return r, nil
}

func nslookupMX(name string) (mx []*MX, err error) {
	var r string
	if r, err = nslookup("mx", name); err != nil {
		return
	}
	mx = make([]*MX, 0, 10)
	// linux nslookup syntax
	// golang.org      mail exchanger = 2 alt1.aspmx.l.google.com.
	rx := regexp.MustCompile(`(?m)^([a-z0-9.\-]+)\s+mail exchanger\s*=\s*([0-9]+)\s*([a-z0-9.\-]+)$`)
	for _, ans := range rx.FindAllStringSubmatch(r, -1) {
		pref, _, _ := dtoi(ans[2])
		mx = append(mx, &MX{absDomainName([]byte(ans[3])), uint16(pref)})
	}
	// windows nslookup syntax
	// gmail.com       MX preference = 30, mail exchanger = alt3.gmail-smtp-in.l.google.com
	rx = regexp.MustCompile(`(?m)^([a-z0-9.\-]+)\s+MX preference\s*=\s*([0-9]+)\s*,\s*mail exchanger\s*=\s*([a-z0-9.\-]+)$`)
	for _, ans := range rx.FindAllStringSubmatch(r, -1) {
		pref, _, _ := dtoi(ans[2])
		mx = append(mx, &MX{absDomainName([]byte(ans[3])), uint16(pref)})
	}
	return
}

func nslookupNS(name string) (ns []*NS, err error) {
	var r string
	if r, err = nslookup("ns", name); err != nil {
		return
	}
	ns = make([]*NS, 0, 10)
	// golang.org      nameserver = ns1.google.com.
	rx := regexp.MustCompile(`(?m)^([a-z0-9.\-]+)\s+nameserver\s*=\s*([a-z0-9.\-]+)$`)
	for _, ans := range rx.FindAllStringSubmatch(r, -1) {
		ns = append(ns, &NS{absDomainName([]byte(ans[2]))})
	}
	return
}

func nslookupCNAME(name string) (cname string, err error) {
	var r string
	if r, err = nslookup("cname", name); err != nil {
		return
	}
	// mail.golang.com canonical name = golang.org.
	rx := regexp.MustCompile(`(?m)^([a-z0-9.\-]+)\s+canonical name\s*=\s*([a-z0-9.\-]+)$`)
	// assumes the last CNAME is the correct one
	last := name
	for _, ans := range rx.FindAllStringSubmatch(r, -1) {
		last = ans[2]
	}
	return absDomainName([]byte(last)), nil
}

func nslookupTXT(name string) (txt []string, err error) {
	var r string
	if r, err = nslookup("txt", name); err != nil {
		return
	}
	txt = make([]string, 0, 10)
	// linux
	// golang.org      text = "v=spf1 redirect=_spf.google.com"

// windows
	// golang.org      text =
	//
	//    "v=spf1 redirect=_spf.google.com"
	rx := regexp.MustCompile(`(?m)^([a-z0-9.\-]+)\s+text\s*=\s*"(.*)"$`)
	for _, ans := range rx.FindAllStringSubmatch(r, -1) {
		txt = append(txt, ans[2])
	}
	return
}

func ping(name string) (string, error) {
	cmd := exec.Command("ping", "-n", "1", "-a", name)
	stdoutStderr, err := cmd.CombinedOutput()
	if err != nil {
		return "", fmt.Errorf("%v: %v", err, string(stdoutStderr))
	}
	r := strings.ReplaceAll(string(stdoutStderr), "\r\n", "\n")
	return r, nil
}

func lookupPTR(name string) (ptr []string, err error) {
	var r string
	if r, err = ping(name); err != nil {
		return
	}
	ptr = make([]string, 0, 10)
	rx := regexp.MustCompile(`(?m)^Pinging\s+([a-zA-Z0-9.\-]+)\s+\[.*$`)
	for _, ans := range rx.FindAllStringSubmatch(r, -1) {
		ptr = append(ptr, absDomainName([]byte(ans[1])))
	}
	return
}

func localIP() (ip IP, err error) {
	conn, err := Dial("udp", "golang.org:80")
	if err != nil {
		return nil, err
	}
	defer conn.Close()

localAddr := conn.LocalAddr().(*UDPAddr)

return localAddr.IP, nil
}

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Editing: lookup_windows_test.go

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