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-rw-r--r--src/net/net_windows_test.go631
1 files changed, 631 insertions, 0 deletions
diff --git a/src/net/net_windows_test.go b/src/net/net_windows_test.go
new file mode 100644
index 0000000..947dda5
--- /dev/null
+++ b/src/net/net_windows_test.go
@@ -0,0 +1,631 @@
+// Copyright 2014 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 (
+ "bufio"
+ "bytes"
+ "fmt"
+ "internal/testenv"
+ "io"
+ "os"
+ "os/exec"
+ "regexp"
+ "sort"
+ "strings"
+ "syscall"
+ "testing"
+ "time"
+)
+
+func toErrno(err error) (syscall.Errno, bool) {
+ operr, ok := err.(*OpError)
+ if !ok {
+ return 0, false
+ }
+ syserr, ok := operr.Err.(*os.SyscallError)
+ if !ok {
+ return 0, false
+ }
+ errno, ok := syserr.Err.(syscall.Errno)
+ if !ok {
+ return 0, false
+ }
+ return errno, true
+}
+
+// TestAcceptIgnoreSomeErrors tests that windows TCPListener.AcceptTCP
+// handles broken connections. It verifies that broken connections do
+// not affect future connections.
+func TestAcceptIgnoreSomeErrors(t *testing.T) {
+ recv := func(ln Listener, ignoreSomeReadErrors bool) (string, error) {
+ c, err := ln.Accept()
+ if err != nil {
+ // Display windows errno in error message.
+ errno, ok := toErrno(err)
+ if !ok {
+ return "", err
+ }
+ return "", fmt.Errorf("%v (windows errno=%d)", err, errno)
+ }
+ defer c.Close()
+
+ b := make([]byte, 100)
+ n, err := c.Read(b)
+ if err == nil || err == io.EOF {
+ return string(b[:n]), nil
+ }
+ errno, ok := toErrno(err)
+ if ok && ignoreSomeReadErrors && (errno == syscall.ERROR_NETNAME_DELETED || errno == syscall.WSAECONNRESET) {
+ return "", nil
+ }
+ return "", err
+ }
+
+ send := func(addr string, data string) error {
+ c, err := Dial("tcp", addr)
+ if err != nil {
+ return err
+ }
+ defer c.Close()
+
+ b := []byte(data)
+ n, err := c.Write(b)
+ if err != nil {
+ return err
+ }
+ if n != len(b) {
+ return fmt.Errorf(`Only %d chars of string "%s" sent`, n, data)
+ }
+ return nil
+ }
+
+ if envaddr := os.Getenv("GOTEST_DIAL_ADDR"); envaddr != "" {
+ // In child process.
+ c, err := Dial("tcp", envaddr)
+ if err != nil {
+ t.Fatal(err)
+ }
+ fmt.Printf("sleeping\n")
+ time.Sleep(time.Minute) // process will be killed here
+ c.Close()
+ }
+
+ ln, err := Listen("tcp", "127.0.0.1:0")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer ln.Close()
+
+ // Start child process that connects to our listener.
+ cmd := exec.Command(os.Args[0], "-test.run=TestAcceptIgnoreSomeErrors")
+ cmd.Env = append(os.Environ(), "GOTEST_DIAL_ADDR="+ln.Addr().String())
+ stdout, err := cmd.StdoutPipe()
+ if err != nil {
+ t.Fatalf("cmd.StdoutPipe failed: %v", err)
+ }
+ err = cmd.Start()
+ if err != nil {
+ t.Fatalf("cmd.Start failed: %v\n", err)
+ }
+ outReader := bufio.NewReader(stdout)
+ for {
+ s, err := outReader.ReadString('\n')
+ if err != nil {
+ t.Fatalf("reading stdout failed: %v", err)
+ }
+ if s == "sleeping\n" {
+ break
+ }
+ }
+ defer cmd.Wait() // ignore error - we know it is getting killed
+
+ const alittle = 100 * time.Millisecond
+ time.Sleep(alittle)
+ cmd.Process.Kill() // the only way to trigger the errors
+ time.Sleep(alittle)
+
+ // Send second connection data (with delay in a separate goroutine).
+ result := make(chan error)
+ go func() {
+ time.Sleep(alittle)
+ err := send(ln.Addr().String(), "abc")
+ if err != nil {
+ result <- err
+ }
+ result <- nil
+ }()
+ defer func() {
+ err := <-result
+ if err != nil {
+ t.Fatalf("send failed: %v", err)
+ }
+ }()
+
+ // Receive first or second connection.
+ s, err := recv(ln, true)
+ if err != nil {
+ t.Fatalf("recv failed: %v", err)
+ }
+ switch s {
+ case "":
+ // First connection data is received, let's get second connection data.
+ case "abc":
+ // First connection is lost forever, but that is ok.
+ return
+ default:
+ t.Fatalf(`"%s" received from recv, but "" or "abc" expected`, s)
+ }
+
+ // Get second connection data.
+ s, err = recv(ln, false)
+ if err != nil {
+ t.Fatalf("recv failed: %v", err)
+ }
+ if s != "abc" {
+ t.Fatalf(`"%s" received from recv, but "abc" expected`, s)
+ }
+}
+
+func runCmd(args ...string) ([]byte, error) {
+ removeUTF8BOM := func(b []byte) []byte {
+ if len(b) >= 3 && b[0] == 0xEF && b[1] == 0xBB && b[2] == 0xBF {
+ return b[3:]
+ }
+ return b
+ }
+ f, err := os.CreateTemp("", "netcmd")
+ if err != nil {
+ return nil, err
+ }
+ f.Close()
+ defer os.Remove(f.Name())
+ cmd := fmt.Sprintf(`%s | Out-File "%s" -encoding UTF8`, strings.Join(args, " "), f.Name())
+ out, err := exec.Command("powershell", "-Command", cmd).CombinedOutput()
+ if err != nil {
+ if len(out) != 0 {
+ return nil, fmt.Errorf("%s failed: %v: %q", args[0], err, string(removeUTF8BOM(out)))
+ }
+ var err2 error
+ out, err2 = os.ReadFile(f.Name())
+ if err2 != nil {
+ return nil, err2
+ }
+ if len(out) != 0 {
+ return nil, fmt.Errorf("%s failed: %v: %q", args[0], err, string(removeUTF8BOM(out)))
+ }
+ return nil, fmt.Errorf("%s failed: %v", args[0], err)
+ }
+ out, err = os.ReadFile(f.Name())
+ if err != nil {
+ return nil, err
+ }
+ return removeUTF8BOM(out), nil
+}
+
+func checkNetsh(t *testing.T) {
+ if testenv.Builder() == "windows-arm64-10" {
+ // netsh was observed to sometimes hang on this builder.
+ // We have not observed failures on windows-arm64-11, so for the
+ // moment we are leaving the test enabled elsewhere on the theory
+ // that it may have been a platform bug fixed in Windows 11.
+ testenv.SkipFlaky(t, 52082)
+ }
+ out, err := runCmd("netsh", "help")
+ if err != nil {
+ t.Fatal(err)
+ }
+ if bytes.Contains(out, []byte("The following helper DLL cannot be loaded")) {
+ t.Skipf("powershell failure:\n%s", err)
+ }
+ if !bytes.Contains(out, []byte("The following commands are available:")) {
+ t.Skipf("powershell does not speak English:\n%s", out)
+ }
+}
+
+func netshInterfaceIPShowInterface(ipver string, ifaces map[string]bool) error {
+ out, err := runCmd("netsh", "interface", ipver, "show", "interface", "level=verbose")
+ if err != nil {
+ return err
+ }
+ // interface information is listed like:
+ //
+ //Interface Local Area Connection Parameters
+ //----------------------------------------------
+ //IfLuid : ethernet_6
+ //IfIndex : 11
+ //State : connected
+ //Metric : 10
+ //...
+ var name string
+ lines := bytes.Split(out, []byte{'\r', '\n'})
+ for _, line := range lines {
+ if bytes.HasPrefix(line, []byte("Interface ")) && bytes.HasSuffix(line, []byte(" Parameters")) {
+ f := line[len("Interface "):]
+ f = f[:len(f)-len(" Parameters")]
+ name = string(f)
+ continue
+ }
+ var isup bool
+ switch string(line) {
+ case "State : connected":
+ isup = true
+ case "State : disconnected":
+ isup = false
+ default:
+ continue
+ }
+ if name != "" {
+ if v, ok := ifaces[name]; ok && v != isup {
+ return fmt.Errorf("%s:%s isup=%v: ipv4 and ipv6 report different interface state", ipver, name, isup)
+ }
+ ifaces[name] = isup
+ name = ""
+ }
+ }
+ return nil
+}
+
+func TestInterfacesWithNetsh(t *testing.T) {
+ checkNetsh(t)
+
+ toString := func(name string, isup bool) string {
+ if isup {
+ return name + ":up"
+ }
+ return name + ":down"
+ }
+
+ ift, err := Interfaces()
+ if err != nil {
+ t.Fatal(err)
+ }
+ have := make([]string, 0)
+ for _, ifi := range ift {
+ have = append(have, toString(ifi.Name, ifi.Flags&FlagUp != 0))
+ }
+ sort.Strings(have)
+
+ ifaces := make(map[string]bool)
+ err = netshInterfaceIPShowInterface("ipv6", ifaces)
+ if err != nil {
+ t.Fatal(err)
+ }
+ err = netshInterfaceIPShowInterface("ipv4", ifaces)
+ if err != nil {
+ t.Fatal(err)
+ }
+ want := make([]string, 0)
+ for name, isup := range ifaces {
+ want = append(want, toString(name, isup))
+ }
+ sort.Strings(want)
+
+ if strings.Join(want, "/") != strings.Join(have, "/") {
+ t.Fatalf("unexpected interface list %q, want %q", have, want)
+ }
+}
+
+func netshInterfaceIPv4ShowAddress(name string, netshOutput []byte) []string {
+ // Address information is listed like:
+ //
+ //Configuration for interface "Local Area Connection"
+ // DHCP enabled: Yes
+ // IP Address: 10.0.0.2
+ // Subnet Prefix: 10.0.0.0/24 (mask 255.255.255.0)
+ // IP Address: 10.0.0.3
+ // Subnet Prefix: 10.0.0.0/24 (mask 255.255.255.0)
+ // Default Gateway: 10.0.0.254
+ // Gateway Metric: 0
+ // InterfaceMetric: 10
+ //
+ //Configuration for interface "Loopback Pseudo-Interface 1"
+ // DHCP enabled: No
+ // IP Address: 127.0.0.1
+ // Subnet Prefix: 127.0.0.0/8 (mask 255.0.0.0)
+ // InterfaceMetric: 50
+ //
+ addrs := make([]string, 0)
+ var addr, subnetprefix string
+ var processingOurInterface bool
+ lines := bytes.Split(netshOutput, []byte{'\r', '\n'})
+ for _, line := range lines {
+ if !processingOurInterface {
+ if !bytes.HasPrefix(line, []byte("Configuration for interface")) {
+ continue
+ }
+ if !bytes.Contains(line, []byte(`"`+name+`"`)) {
+ continue
+ }
+ processingOurInterface = true
+ continue
+ }
+ if len(line) == 0 {
+ break
+ }
+ if bytes.Contains(line, []byte("Subnet Prefix:")) {
+ f := bytes.Split(line, []byte{':'})
+ if len(f) == 2 {
+ f = bytes.Split(f[1], []byte{'('})
+ if len(f) == 2 {
+ f = bytes.Split(f[0], []byte{'/'})
+ if len(f) == 2 {
+ subnetprefix = string(bytes.TrimSpace(f[1]))
+ if addr != "" && subnetprefix != "" {
+ addrs = append(addrs, addr+"/"+subnetprefix)
+ }
+ }
+ }
+ }
+ }
+ addr = ""
+ if bytes.Contains(line, []byte("IP Address:")) {
+ f := bytes.Split(line, []byte{':'})
+ if len(f) == 2 {
+ addr = string(bytes.TrimSpace(f[1]))
+ }
+ }
+ }
+ return addrs
+}
+
+func netshInterfaceIPv6ShowAddress(name string, netshOutput []byte) []string {
+ // Address information is listed like:
+ //
+ //Address ::1 Parameters
+ //---------------------------------------------------------
+ //Interface Luid : Loopback Pseudo-Interface 1
+ //Scope Id : 0.0
+ //Valid Lifetime : infinite
+ //Preferred Lifetime : infinite
+ //DAD State : Preferred
+ //Address Type : Other
+ //Skip as Source : false
+ //
+ //Address XXXX::XXXX:XXXX:XXXX:XXXX%11 Parameters
+ //---------------------------------------------------------
+ //Interface Luid : Local Area Connection
+ //Scope Id : 0.11
+ //Valid Lifetime : infinite
+ //Preferred Lifetime : infinite
+ //DAD State : Preferred
+ //Address Type : Other
+ //Skip as Source : false
+ //
+
+ // TODO: need to test ipv6 netmask too, but netsh does not outputs it
+ var addr string
+ addrs := make([]string, 0)
+ lines := bytes.Split(netshOutput, []byte{'\r', '\n'})
+ for _, line := range lines {
+ if addr != "" {
+ if len(line) == 0 {
+ addr = ""
+ continue
+ }
+ if string(line) != "Interface Luid : "+name {
+ continue
+ }
+ addrs = append(addrs, addr)
+ addr = ""
+ continue
+ }
+ if !bytes.HasPrefix(line, []byte("Address")) {
+ continue
+ }
+ if !bytes.HasSuffix(line, []byte("Parameters")) {
+ continue
+ }
+ f := bytes.Split(line, []byte{' '})
+ if len(f) != 3 {
+ continue
+ }
+ // remove scope ID if present
+ f = bytes.Split(f[1], []byte{'%'})
+
+ // netsh can create IPv4-embedded IPv6 addresses, like fe80::5efe:192.168.140.1.
+ // Convert these to all hexadecimal fe80::5efe:c0a8:8c01 for later string comparisons.
+ ipv4Tail := regexp.MustCompile(`:\d+\.\d+\.\d+\.\d+$`)
+ if ipv4Tail.Match(f[0]) {
+ f[0] = []byte(ParseIP(string(f[0])).String())
+ }
+
+ addr = string(bytes.ToLower(bytes.TrimSpace(f[0])))
+ }
+ return addrs
+}
+
+func TestInterfaceAddrsWithNetsh(t *testing.T) {
+ checkNetsh(t)
+
+ outIPV4, err := runCmd("netsh", "interface", "ipv4", "show", "address")
+ if err != nil {
+ t.Fatal(err)
+ }
+ outIPV6, err := runCmd("netsh", "interface", "ipv6", "show", "address", "level=verbose")
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ ift, err := Interfaces()
+ if err != nil {
+ t.Fatal(err)
+ }
+ for _, ifi := range ift {
+ // Skip the interface if it's down.
+ if (ifi.Flags & FlagUp) == 0 {
+ continue
+ }
+ have := make([]string, 0)
+ addrs, err := ifi.Addrs()
+ if err != nil {
+ t.Fatal(err)
+ }
+ for _, addr := range addrs {
+ switch addr := addr.(type) {
+ case *IPNet:
+ if addr.IP.To4() != nil {
+ have = append(have, addr.String())
+ }
+ if addr.IP.To16() != nil && addr.IP.To4() == nil {
+ // netsh does not output netmask for ipv6, so ignore ipv6 mask
+ have = append(have, addr.IP.String())
+ }
+ case *IPAddr:
+ if addr.IP.To4() != nil {
+ have = append(have, addr.String())
+ }
+ if addr.IP.To16() != nil && addr.IP.To4() == nil {
+ // netsh does not output netmask for ipv6, so ignore ipv6 mask
+ have = append(have, addr.IP.String())
+ }
+ }
+ }
+ sort.Strings(have)
+
+ want := netshInterfaceIPv4ShowAddress(ifi.Name, outIPV4)
+ wantIPv6 := netshInterfaceIPv6ShowAddress(ifi.Name, outIPV6)
+ want = append(want, wantIPv6...)
+ sort.Strings(want)
+
+ if strings.Join(want, "/") != strings.Join(have, "/") {
+ t.Errorf("%s: unexpected addresses list %q, want %q", ifi.Name, have, want)
+ }
+ }
+}
+
+// check that getmac exists as a powershell command, and that it
+// speaks English.
+func checkGetmac(t *testing.T) {
+ out, err := runCmd("getmac", "/?")
+ if err != nil {
+ if strings.Contains(err.Error(), "term 'getmac' is not recognized as the name of a cmdlet") {
+ t.Skipf("getmac not available")
+ }
+ t.Fatal(err)
+ }
+ if !bytes.Contains(out, []byte("network adapters on a system")) {
+ t.Skipf("skipping test on non-English system")
+ }
+}
+
+func TestInterfaceHardwareAddrWithGetmac(t *testing.T) {
+ checkGetmac(t)
+
+ ift, err := Interfaces()
+ if err != nil {
+ t.Fatal(err)
+ }
+ have := make(map[string]string)
+ for _, ifi := range ift {
+ if ifi.Flags&FlagLoopback != 0 {
+ // no MAC address for loopback interfaces
+ continue
+ }
+ have[ifi.Name] = ifi.HardwareAddr.String()
+ }
+
+ out, err := runCmd("getmac", "/fo", "list", "/v")
+ if err != nil {
+ t.Fatal(err)
+ }
+ // getmac output looks like:
+ //
+ //Connection Name: Local Area Connection
+ //Network Adapter: Intel Gigabit Network Connection
+ //Physical Address: XX-XX-XX-XX-XX-XX
+ //Transport Name: \Device\Tcpip_{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}
+ //
+ //Connection Name: Wireless Network Connection
+ //Network Adapter: Wireles WLAN Card
+ //Physical Address: XX-XX-XX-XX-XX-XX
+ //Transport Name: Media disconnected
+ //
+ //Connection Name: Bluetooth Network Connection
+ //Network Adapter: Bluetooth Device (Personal Area Network)
+ //Physical Address: N/A
+ //Transport Name: Hardware not present
+ //
+ //Connection Name: VMware Network Adapter VMnet8
+ //Network Adapter: VMware Virtual Ethernet Adapter for VMnet8
+ //Physical Address: Disabled
+ //Transport Name: Disconnected
+ //
+ want := make(map[string]string)
+ group := make(map[string]string) // name / values for single adapter
+ getValue := func(name string) string {
+ value, found := group[name]
+ if !found {
+ t.Fatalf("%q has no %q line in it", group, name)
+ }
+ if value == "" {
+ t.Fatalf("%q has empty %q value", group, name)
+ }
+ return value
+ }
+ processGroup := func() {
+ if len(group) == 0 {
+ return
+ }
+ tname := strings.ToLower(getValue("Transport Name"))
+ if tname == "n/a" {
+ // skip these
+ return
+ }
+ addr := strings.ToLower(getValue("Physical Address"))
+ if addr == "disabled" || addr == "n/a" {
+ // skip these
+ return
+ }
+ addr = strings.ReplaceAll(addr, "-", ":")
+ cname := getValue("Connection Name")
+ want[cname] = addr
+ group = make(map[string]string)
+ }
+ lines := bytes.Split(out, []byte{'\r', '\n'})
+ for _, line := range lines {
+ if len(line) == 0 {
+ processGroup()
+ continue
+ }
+ i := bytes.IndexByte(line, ':')
+ if i == -1 {
+ t.Fatalf("line %q has no : in it", line)
+ }
+ group[string(line[:i])] = string(bytes.TrimSpace(line[i+1:]))
+ }
+ processGroup()
+
+ dups := make(map[string][]string)
+ for name, addr := range want {
+ if _, ok := dups[addr]; !ok {
+ dups[addr] = make([]string, 0)
+ }
+ dups[addr] = append(dups[addr], name)
+ }
+
+nextWant:
+ for name, wantAddr := range want {
+ if haveAddr, ok := have[name]; ok {
+ if haveAddr != wantAddr {
+ t.Errorf("unexpected MAC address for %q - %v, want %v", name, haveAddr, wantAddr)
+ }
+ continue
+ }
+ // We could not find the interface in getmac output by name.
+ // But sometimes getmac lists many interface names
+ // for the same MAC address. If that is the case here,
+ // and we can match at least one of those names,
+ // let's ignore the other names.
+ if dupNames, ok := dups[wantAddr]; ok && len(dupNames) > 1 {
+ for _, dupName := range dupNames {
+ if haveAddr, ok := have[dupName]; ok && haveAddr == wantAddr {
+ continue nextWant
+ }
+ }
+ }
+ t.Errorf("getmac lists %q, but it could not be found among Go interfaces %v", name, have)
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-29 13:36:52 +0000