251 lines
6.3 KiB
Go
251 lines
6.3 KiB
Go
|
// Copyright 2012 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 ipv4_test
|
||
|
|
|
||
|
|
import (
|
||
|
|
"bytes"
|
||
|
|
"net"
|
||
|
|
"os"
|
||
|
|
"runtime"
|
||
|
|
"testing"
|
||
|
|
"time"
|
||
|
|
|
||
|
|
"golang.org/x/net/icmp"
|
||
|
|
"golang.org/x/net/internal/iana"
|
||
|
|
"golang.org/x/net/internal/nettest"
|
||
|
|
"golang.org/x/net/ipv4"
|
||
|
|
)
|
||
|
|
|
||
|
|
func TestPacketConnReadWriteUnicastUDP(t *testing.T) {
|
||
|
|
switch runtime.GOOS {
|
||
|
|
case "nacl", "plan9", "windows":
|
||
|
|
t.Skipf("not supported on %s", runtime.GOOS)
|
||
|
|
}
|
||
|
|
ifi := nettest.RoutedInterface("ip4", net.FlagUp|net.FlagLoopback)
|
||
|
|
if ifi == nil {
|
||
|
|
t.Skipf("not available on %s", runtime.GOOS)
|
||
|
|
}
|
||
|
|
|
||
|
|
c, err := net.ListenPacket("udp4", "127.0.0.1:0")
|
||
|
|
if err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
defer c.Close()
|
||
|
|
|
||
|
|
dst, err := net.ResolveUDPAddr("udp4", c.LocalAddr().String())
|
||
|
|
if err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
p := ipv4.NewPacketConn(c)
|
||
|
|
defer p.Close()
|
||
|
|
cf := ipv4.FlagTTL | ipv4.FlagDst | ipv4.FlagInterface
|
||
|
|
wb := []byte("HELLO-R-U-THERE")
|
||
|
|
|
||
|
|
for i, toggle := range []bool{true, false, true} {
|
||
|
|
if err := p.SetControlMessage(cf, toggle); err != nil {
|
||
|
|
if nettest.ProtocolNotSupported(err) {
|
||
|
|
t.Logf("not supported on %s", runtime.GOOS)
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
p.SetTTL(i + 1)
|
||
|
|
if err := p.SetWriteDeadline(time.Now().Add(100 * time.Millisecond)); err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
if n, err := p.WriteTo(wb, nil, dst); err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
} else if n != len(wb) {
|
||
|
|
t.Fatalf("got %v; want %v", n, len(wb))
|
||
|
|
}
|
||
|
|
rb := make([]byte, 128)
|
||
|
|
if err := p.SetReadDeadline(time.Now().Add(100 * time.Millisecond)); err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
if n, _, _, err := p.ReadFrom(rb); err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
} else if !bytes.Equal(rb[:n], wb) {
|
||
|
|
t.Fatalf("got %v; want %v", rb[:n], wb)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestPacketConnReadWriteUnicastICMP(t *testing.T) {
|
||
|
|
switch runtime.GOOS {
|
||
|
|
case "nacl", "plan9", "windows":
|
||
|
|
t.Skipf("not supported on %s", runtime.GOOS)
|
||
|
|
}
|
||
|
|
if m, ok := nettest.SupportsRawIPSocket(); !ok {
|
||
|
|
t.Skip(m)
|
||
|
|
}
|
||
|
|
ifi := nettest.RoutedInterface("ip4", net.FlagUp|net.FlagLoopback)
|
||
|
|
if ifi == nil {
|
||
|
|
t.Skipf("not available on %s", runtime.GOOS)
|
||
|
|
}
|
||
|
|
|
||
|
|
c, err := net.ListenPacket("ip4:icmp", "0.0.0.0")
|
||
|
|
if err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
defer c.Close()
|
||
|
|
|
||
|
|
dst, err := net.ResolveIPAddr("ip4", "127.0.0.1")
|
||
|
|
if err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
p := ipv4.NewPacketConn(c)
|
||
|
|
defer p.Close()
|
||
|
|
cf := ipv4.FlagDst | ipv4.FlagInterface
|
||
|
|
if runtime.GOOS != "solaris" {
|
||
|
|
// Solaris never allows to modify ICMP properties.
|
||
|
|
cf |= ipv4.FlagTTL
|
||
|
|
}
|
||
|
|
|
||
|
|
for i, toggle := range []bool{true, false, true} {
|
||
|
|
wb, err := (&icmp.Message{
|
||
|
|
Type: ipv4.ICMPTypeEcho, Code: 0,
|
||
|
|
Body: &icmp.Echo{
|
||
|
|
ID: os.Getpid() & 0xffff, Seq: i + 1,
|
||
|
|
Data: []byte("HELLO-R-U-THERE"),
|
||
|
|
},
|
||
|
|
}).Marshal(nil)
|
||
|
|
if err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
if err := p.SetControlMessage(cf, toggle); err != nil {
|
||
|
|
if nettest.ProtocolNotSupported(err) {
|
||
|
|
t.Logf("not supported on %s", runtime.GOOS)
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
p.SetTTL(i + 1)
|
||
|
|
if err := p.SetWriteDeadline(time.Now().Add(100 * time.Millisecond)); err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
if n, err := p.WriteTo(wb, nil, dst); err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
} else if n != len(wb) {
|
||
|
|
t.Fatalf("got %v; want %v", n, len(wb))
|
||
|
|
}
|
||
|
|
rb := make([]byte, 128)
|
||
|
|
loop:
|
||
|
|
if err := p.SetReadDeadline(time.Now().Add(100 * time.Millisecond)); err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
if n, _, _, err := p.ReadFrom(rb); err != nil {
|
||
|
|
switch runtime.GOOS {
|
||
|
|
case "darwin": // older darwin kernels have some limitation on receiving icmp packet through raw socket
|
||
|
|
t.Logf("not supported on %s", runtime.GOOS)
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
t.Fatal(err)
|
||
|
|
} else {
|
||
|
|
m, err := icmp.ParseMessage(iana.ProtocolICMP, rb[:n])
|
||
|
|
if err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
if runtime.GOOS == "linux" && m.Type == ipv4.ICMPTypeEcho {
|
||
|
|
// On Linux we must handle own sent packets.
|
||
|
|
goto loop
|
||
|
|
}
|
||
|
|
if m.Type != ipv4.ICMPTypeEchoReply || m.Code != 0 {
|
||
|
|
t.Fatalf("got type=%v, code=%v; want type=%v, code=%v", m.Type, m.Code, ipv4.ICMPTypeEchoReply, 0)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestRawConnReadWriteUnicastICMP(t *testing.T) {
|
||
|
|
switch runtime.GOOS {
|
||
|
|
case "nacl", "plan9", "windows":
|
||
|
|
t.Skipf("not supported on %s", runtime.GOOS)
|
||
|
|
}
|
||
|
|
if m, ok := nettest.SupportsRawIPSocket(); !ok {
|
||
|
|
t.Skip(m)
|
||
|
|
}
|
||
|
|
ifi := nettest.RoutedInterface("ip4", net.FlagUp|net.FlagLoopback)
|
||
|
|
if ifi == nil {
|
||
|
|
t.Skipf("not available on %s", runtime.GOOS)
|
||
|
|
}
|
||
|
|
|
||
|
|
c, err := net.ListenPacket("ip4:icmp", "0.0.0.0")
|
||
|
|
if err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
defer c.Close()
|
||
|
|
|
||
|
|
dst, err := net.ResolveIPAddr("ip4", "127.0.0.1")
|
||
|
|
if err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
r, err := ipv4.NewRawConn(c)
|
||
|
|
if err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
defer r.Close()
|
||
|
|
cf := ipv4.FlagTTL | ipv4.FlagDst | ipv4.FlagInterface
|
||
|
|
|
||
|
|
for i, toggle := range []bool{true, false, true} {
|
||
|
|
wb, err := (&icmp.Message{
|
||
|
|
Type: ipv4.ICMPTypeEcho, Code: 0,
|
||
|
|
Body: &icmp.Echo{
|
||
|
|
ID: os.Getpid() & 0xffff, Seq: i + 1,
|
||
|
|
Data: []byte("HELLO-R-U-THERE"),
|
||
|
|
},
|
||
|
|
}).Marshal(nil)
|
||
|
|
if err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
wh := &ipv4.Header{
|
||
|
|
Version: ipv4.Version,
|
||
|
|
Len: ipv4.HeaderLen,
|
||
|
|
TOS: i + 1,
|
||
|
|
TotalLen: ipv4.HeaderLen + len(wb),
|
||
|
|
TTL: i + 1,
|
||
|
|
Protocol: 1,
|
||
|
|
Dst: dst.IP,
|
||
|
|
}
|
||
|
|
if err := r.SetControlMessage(cf, toggle); err != nil {
|
||
|
|
if nettest.ProtocolNotSupported(err) {
|
||
|
|
t.Logf("not supported on %s", runtime.GOOS)
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
if err := r.SetWriteDeadline(time.Now().Add(100 * time.Millisecond)); err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
if err := r.WriteTo(wh, wb, nil); err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
rb := make([]byte, ipv4.HeaderLen+128)
|
||
|
|
loop:
|
||
|
|
if err := r.SetReadDeadline(time.Now().Add(100 * time.Millisecond)); err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
if _, b, _, err := r.ReadFrom(rb); err != nil {
|
||
|
|
switch runtime.GOOS {
|
||
|
|
case "darwin": // older darwin kernels have some limitation on receiving icmp packet through raw socket
|
||
|
|
t.Logf("not supported on %s", runtime.GOOS)
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
t.Fatal(err)
|
||
|
|
} else {
|
||
|
|
m, err := icmp.ParseMessage(iana.ProtocolICMP, b)
|
||
|
|
if err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
if runtime.GOOS == "linux" && m.Type == ipv4.ICMPTypeEcho {
|
||
|
|
// On Linux we must handle own sent packets.
|
||
|
|
goto loop
|
||
|
|
}
|
||
|
|
if m.Type != ipv4.ICMPTypeEchoReply || m.Code != 0 {
|
||
|
|
t.Fatalf("got type=%v, code=%v; want type=%v, code=%v", m.Type, m.Code, ipv4.ICMPTypeEchoReply, 0)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|