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// 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"
"fmt"
"os"
"reflect"
"runtime"
"testing"
"time"
)
type resolveIPAddrTest struct {
net string
litAddrOrName string
addr *IPAddr
err error
}
var resolveIPAddrTests = []resolveIPAddrTest{
{"ip", "127.0.0.1", &IPAddr{IP: IPv4(127, 0, 0, 1)}, nil},
{"ip4", "127.0.0.1", &IPAddr{IP: IPv4(127, 0, 0, 1)}, nil},
{"ip4:icmp", "127.0.0.1", &IPAddr{IP: IPv4(127, 0, 0, 1)}, nil},
{"ip", "::1", &IPAddr{IP: ParseIP("::1")}, nil},
{"ip6", "::1", &IPAddr{IP: ParseIP("::1")}, nil},
{"ip6:ipv6-icmp", "::1", &IPAddr{IP: ParseIP("::1")}, nil},
{"ip6:IPv6-ICMP", "::1", &IPAddr{IP: ParseIP("::1")}, nil},
{"ip", "::1%en0", &IPAddr{IP: ParseIP("::1"), Zone: "en0"}, nil},
{"ip6", "::1%911", &IPAddr{IP: ParseIP("::1"), Zone: "911"}, nil},
{"", "127.0.0.1", &IPAddr{IP: IPv4(127, 0, 0, 1)}, nil}, // Go 1.0 behavior
{"", "::1", &IPAddr{IP: ParseIP("::1")}, nil}, // Go 1.0 behavior
{"l2tp", "127.0.0.1", nil, UnknownNetworkError("l2tp")},
{"l2tp:gre", "127.0.0.1", nil, UnknownNetworkError("l2tp:gre")},
{"tcp", "1.2.3.4:123", nil, UnknownNetworkError("tcp")},
}
func init() {
if ifi := loopbackInterface(); ifi != nil {
index := fmt.Sprintf("%v", ifi.Index)
resolveIPAddrTests = append(resolveIPAddrTests, []resolveIPAddrTest{
{"ip6", "fe80::1%" + ifi.Name, &IPAddr{IP: ParseIP("fe80::1"), Zone: zoneToString(ifi.Index)}, nil},
{"ip6", "fe80::1%" + index, &IPAddr{IP: ParseIP("fe80::1"), Zone: index}, nil},
}...)
}
if ips, err := LookupIP("localhost"); err == nil && len(ips) > 1 && supportsIPv4 && supportsIPv6 {
resolveIPAddrTests = append(resolveIPAddrTests, []resolveIPAddrTest{
{"ip", "localhost", &IPAddr{IP: IPv4(127, 0, 0, 1)}, nil},
{"ip4", "localhost", &IPAddr{IP: IPv4(127, 0, 0, 1)}, nil},
{"ip6", "localhost", &IPAddr{IP: IPv6loopback}, nil},
}...)
}
}
func skipRawSocketTest(t *testing.T) (skip bool, skipmsg string) {
skip, skipmsg, err := skipRawSocketTests()
if err != nil {
t.Fatal(err)
}
return skip, skipmsg
}
func TestResolveIPAddr(t *testing.T) {
switch runtime.GOOS {
case "nacl":
t.Skipf("skipping test on %q", runtime.GOOS)
}
for _, tt := range resolveIPAddrTests {
addr, err := ResolveIPAddr(tt.net, tt.litAddrOrName)
if err != tt.err {
t.Fatalf("ResolveIPAddr(%v, %v) failed: %v", tt.net, tt.litAddrOrName, err)
} else if !reflect.DeepEqual(addr, tt.addr) {
t.Fatalf("got %#v; expected %#v", addr, tt.addr)
}
}
}
var icmpEchoTests = []struct {
net string
laddr string
raddr string
}{
{"ip4:icmp", "0.0.0.0", "127.0.0.1"},
{"ip6:ipv6-icmp", "::", "::1"},
}
func TestConnICMPEcho(t *testing.T) {
if skip, skipmsg := skipRawSocketTest(t); skip {
t.Skip(skipmsg)
}
for i, tt := range icmpEchoTests {
net, _, err := parseNetwork(tt.net)
if err != nil {
t.Fatalf("parseNetwork failed: %v", err)
}
if net == "ip6" && !supportsIPv6 {
continue
}
c, err := Dial(tt.net, tt.raddr)
if err != nil {
t.Fatalf("Dial failed: %v", err)
}
c.SetDeadline(time.Now().Add(100 * time.Millisecond))
defer c.Close()
typ := icmpv4EchoRequest
if net == "ip6" {
typ = icmpv6EchoRequest
}
xid, xseq := os.Getpid()&0xffff, i+1
wb, err := (&icmpMessage{
Type: typ, Code: 0,
Body: &icmpEcho{
ID: xid, Seq: xseq,
Data: bytes.Repeat([]byte("Go Go Gadget Ping!!!"), 3),
},
}).Marshal()
if err != nil {
t.Fatalf("icmpMessage.Marshal failed: %v", err)
}
if _, err := c.Write(wb); err != nil {
t.Fatalf("Conn.Write failed: %v", err)
}
var m *icmpMessage
rb := make([]byte, 20+len(wb))
for {
if _, err := c.Read(rb); err != nil {
t.Fatalf("Conn.Read failed: %v", err)
}
if net == "ip4" {
rb = ipv4Payload(rb)
}
if m, err = parseICMPMessage(rb); err != nil {
t.Fatalf("parseICMPMessage failed: %v", err)
}
switch m.Type {
case icmpv4EchoRequest, icmpv6EchoRequest:
continue
}
break
}
switch p := m.Body.(type) {
case *icmpEcho:
if p.ID != xid || p.Seq != xseq {
t.Fatalf("got id=%v, seqnum=%v; expected id=%v, seqnum=%v", p.ID, p.Seq, xid, xseq)
}
default:
t.Fatalf("got type=%v, code=%v; expected type=%v, code=%v", m.Type, m.Code, typ, 0)
}
}
}
func TestPacketConnICMPEcho(t *testing.T) {
if skip, skipmsg := skipRawSocketTest(t); skip {
t.Skip(skipmsg)
}
for i, tt := range icmpEchoTests {
net, _, err := parseNetwork(tt.net)
if err != nil {
t.Fatalf("parseNetwork failed: %v", err)
}
if net == "ip6" && !supportsIPv6 {
continue
}
c, err := ListenPacket(tt.net, tt.laddr)
if err != nil {
t.Fatalf("ListenPacket failed: %v", err)
}
c.SetDeadline(time.Now().Add(100 * time.Millisecond))
defer c.Close()
ra, err := ResolveIPAddr(tt.net, tt.raddr)
if err != nil {
t.Fatalf("ResolveIPAddr failed: %v", err)
}
typ := icmpv4EchoRequest
if net == "ip6" {
typ = icmpv6EchoRequest
}
xid, xseq := os.Getpid()&0xffff, i+1
wb, err := (&icmpMessage{
Type: typ, Code: 0,
Body: &icmpEcho{
ID: xid, Seq: xseq,
Data: bytes.Repeat([]byte("Go Go Gadget Ping!!!"), 3),
},
}).Marshal()
if err != nil {
t.Fatalf("icmpMessage.Marshal failed: %v", err)
}
if _, err := c.WriteTo(wb, ra); err != nil {
t.Fatalf("PacketConn.WriteTo failed: %v", err)
}
var m *icmpMessage
rb := make([]byte, 20+len(wb))
for {
if _, _, err := c.ReadFrom(rb); err != nil {
t.Fatalf("PacketConn.ReadFrom failed: %v", err)
}
// See BUG section.
//if net == "ip4" {
// rb = ipv4Payload(rb)
//}
if m, err = parseICMPMessage(rb); err != nil {
t.Fatalf("parseICMPMessage failed: %v", err)
}
switch m.Type {
case icmpv4EchoRequest, icmpv6EchoRequest:
continue
}
break
}
switch p := m.Body.(type) {
case *icmpEcho:
if p.ID != xid || p.Seq != xseq {
t.Fatalf("got id=%v, seqnum=%v; expected id=%v, seqnum=%v", p.ID, p.Seq, xid, xseq)
}
default:
t.Fatalf("got type=%v, code=%v; expected type=%v, code=%v", m.Type, m.Code, typ, 0)
}
}
}
func ipv4Payload(b []byte) []byte {
if len(b) < 20 {
return b
}
hdrlen := int(b[0]&0x0f) << 2
return b[hdrlen:]
}
var ipConnLocalNameTests = []struct {
net string
laddr *IPAddr
}{
{"ip4:icmp", &IPAddr{IP: IPv4(127, 0, 0, 1)}},
{"ip4:icmp", &IPAddr{}},
{"ip4:icmp", nil},
}
func TestIPConnLocalName(t *testing.T) {
switch runtime.GOOS {
case "nacl", "plan9", "windows":
t.Skipf("skipping test on %q", runtime.GOOS)
default:
if os.Getuid() != 0 {
t.Skip("skipping test; must be root")
}
}
for _, tt := range ipConnLocalNameTests {
c, err := ListenIP(tt.net, tt.laddr)
if err != nil {
t.Fatalf("ListenIP failed: %v", err)
}
defer c.Close()
if la := c.LocalAddr(); la == nil {
t.Fatal("IPConn.LocalAddr failed")
}
}
}
func TestIPConnRemoteName(t *testing.T) {
switch runtime.GOOS {
case "plan9", "windows":
t.Skipf("skipping test on %q", runtime.GOOS)
default:
if os.Getuid() != 0 {
t.Skip("skipping test; must be root")
}
}
raddr := &IPAddr{IP: IPv4(127, 0, 0, 1).To4()}
c, err := DialIP("ip:tcp", &IPAddr{IP: IPv4(127, 0, 0, 1)}, raddr)
if err != nil {
t.Fatalf("DialIP failed: %v", err)
}
defer c.Close()
if !reflect.DeepEqual(raddr, c.RemoteAddr()) {
t.Fatalf("got %#v, expected %#v", c.RemoteAddr(), raddr)
}
}