290 lines
7.2 KiB
Go
290 lines
7.2 KiB
Go
// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package net
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import (
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"bytes"
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"fmt"
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"os"
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"reflect"
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"runtime"
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"testing"
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"time"
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)
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type resolveIPAddrTest struct {
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net string
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litAddrOrName string
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addr *IPAddr
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err error
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}
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var resolveIPAddrTests = []resolveIPAddrTest{
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{"ip", "127.0.0.1", &IPAddr{IP: IPv4(127, 0, 0, 1)}, nil},
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{"ip4", "127.0.0.1", &IPAddr{IP: IPv4(127, 0, 0, 1)}, nil},
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{"ip4:icmp", "127.0.0.1", &IPAddr{IP: IPv4(127, 0, 0, 1)}, nil},
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{"ip", "::1", &IPAddr{IP: ParseIP("::1")}, nil},
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{"ip6", "::1", &IPAddr{IP: ParseIP("::1")}, nil},
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{"ip6:ipv6-icmp", "::1", &IPAddr{IP: ParseIP("::1")}, nil},
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{"ip6:IPv6-ICMP", "::1", &IPAddr{IP: ParseIP("::1")}, nil},
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{"ip", "::1%en0", &IPAddr{IP: ParseIP("::1"), Zone: "en0"}, nil},
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{"ip6", "::1%911", &IPAddr{IP: ParseIP("::1"), Zone: "911"}, nil},
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{"", "127.0.0.1", &IPAddr{IP: IPv4(127, 0, 0, 1)}, nil}, // Go 1.0 behavior
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{"", "::1", &IPAddr{IP: ParseIP("::1")}, nil}, // Go 1.0 behavior
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{"l2tp", "127.0.0.1", nil, UnknownNetworkError("l2tp")},
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{"l2tp:gre", "127.0.0.1", nil, UnknownNetworkError("l2tp:gre")},
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{"tcp", "1.2.3.4:123", nil, UnknownNetworkError("tcp")},
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}
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func init() {
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if ifi := loopbackInterface(); ifi != nil {
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index := fmt.Sprintf("%v", ifi.Index)
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resolveIPAddrTests = append(resolveIPAddrTests, []resolveIPAddrTest{
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{"ip6", "fe80::1%" + ifi.Name, &IPAddr{IP: ParseIP("fe80::1"), Zone: zoneToString(ifi.Index)}, nil},
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{"ip6", "fe80::1%" + index, &IPAddr{IP: ParseIP("fe80::1"), Zone: index}, nil},
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}...)
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}
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if ips, err := LookupIP("localhost"); err == nil && len(ips) > 1 && supportsIPv4 && supportsIPv6 {
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resolveIPAddrTests = append(resolveIPAddrTests, []resolveIPAddrTest{
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{"ip", "localhost", &IPAddr{IP: IPv4(127, 0, 0, 1)}, nil},
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{"ip4", "localhost", &IPAddr{IP: IPv4(127, 0, 0, 1)}, nil},
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{"ip6", "localhost", &IPAddr{IP: IPv6loopback}, nil},
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}...)
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}
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}
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func skipRawSocketTest(t *testing.T) (skip bool, skipmsg string) {
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skip, skipmsg, err := skipRawSocketTests()
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if err != nil {
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t.Fatal(err)
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}
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return skip, skipmsg
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}
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func TestResolveIPAddr(t *testing.T) {
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for _, tt := range resolveIPAddrTests {
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addr, err := ResolveIPAddr(tt.net, tt.litAddrOrName)
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if err != tt.err {
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t.Fatalf("ResolveIPAddr(%v, %v) failed: %v", tt.net, tt.litAddrOrName, err)
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} else if !reflect.DeepEqual(addr, tt.addr) {
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t.Fatalf("got %#v; expected %#v", addr, tt.addr)
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}
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}
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}
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var icmpEchoTests = []struct {
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net string
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laddr string
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raddr string
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}{
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{"ip4:icmp", "0.0.0.0", "127.0.0.1"},
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{"ip6:ipv6-icmp", "::", "::1"},
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}
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func TestConnICMPEcho(t *testing.T) {
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if skip, skipmsg := skipRawSocketTest(t); skip {
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t.Skip(skipmsg)
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}
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for i, tt := range icmpEchoTests {
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net, _, err := parseNetwork(tt.net)
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if err != nil {
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t.Fatalf("parseNetwork failed: %v", err)
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}
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if net == "ip6" && !supportsIPv6 {
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continue
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}
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c, err := Dial(tt.net, tt.raddr)
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if err != nil {
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t.Fatalf("Dial failed: %v", err)
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}
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c.SetDeadline(time.Now().Add(100 * time.Millisecond))
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defer c.Close()
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typ := icmpv4EchoRequest
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if net == "ip6" {
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typ = icmpv6EchoRequest
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}
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xid, xseq := os.Getpid()&0xffff, i+1
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wb, err := (&icmpMessage{
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Type: typ, Code: 0,
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Body: &icmpEcho{
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ID: xid, Seq: xseq,
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Data: bytes.Repeat([]byte("Go Go Gadget Ping!!!"), 3),
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},
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}).Marshal()
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if err != nil {
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t.Fatalf("icmpMessage.Marshal failed: %v", err)
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}
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if _, err := c.Write(wb); err != nil {
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t.Fatalf("Conn.Write failed: %v", err)
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}
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var m *icmpMessage
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rb := make([]byte, 20+len(wb))
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for {
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if _, err := c.Read(rb); err != nil {
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t.Fatalf("Conn.Read failed: %v", err)
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}
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if net == "ip4" {
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rb = ipv4Payload(rb)
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}
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if m, err = parseICMPMessage(rb); err != nil {
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t.Fatalf("parseICMPMessage failed: %v", err)
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}
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switch m.Type {
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case icmpv4EchoRequest, icmpv6EchoRequest:
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continue
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}
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break
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}
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switch p := m.Body.(type) {
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case *icmpEcho:
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if p.ID != xid || p.Seq != xseq {
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t.Fatalf("got id=%v, seqnum=%v; expected id=%v, seqnum=%v", p.ID, p.Seq, xid, xseq)
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}
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default:
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t.Fatalf("got type=%v, code=%v; expected type=%v, code=%v", m.Type, m.Code, typ, 0)
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}
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}
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}
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func TestPacketConnICMPEcho(t *testing.T) {
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if skip, skipmsg := skipRawSocketTest(t); skip {
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t.Skip(skipmsg)
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}
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for i, tt := range icmpEchoTests {
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net, _, err := parseNetwork(tt.net)
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if err != nil {
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t.Fatalf("parseNetwork failed: %v", err)
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}
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if net == "ip6" && !supportsIPv6 {
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continue
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}
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c, err := ListenPacket(tt.net, tt.laddr)
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if err != nil {
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t.Fatalf("ListenPacket failed: %v", err)
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}
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c.SetDeadline(time.Now().Add(100 * time.Millisecond))
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defer c.Close()
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ra, err := ResolveIPAddr(tt.net, tt.raddr)
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if err != nil {
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t.Fatalf("ResolveIPAddr failed: %v", err)
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}
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typ := icmpv4EchoRequest
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if net == "ip6" {
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typ = icmpv6EchoRequest
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}
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xid, xseq := os.Getpid()&0xffff, i+1
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wb, err := (&icmpMessage{
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Type: typ, Code: 0,
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Body: &icmpEcho{
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ID: xid, Seq: xseq,
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Data: bytes.Repeat([]byte("Go Go Gadget Ping!!!"), 3),
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},
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}).Marshal()
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if err != nil {
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t.Fatalf("icmpMessage.Marshal failed: %v", err)
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}
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if _, err := c.WriteTo(wb, ra); err != nil {
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t.Fatalf("PacketConn.WriteTo failed: %v", err)
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}
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var m *icmpMessage
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rb := make([]byte, 20+len(wb))
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for {
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if _, _, err := c.ReadFrom(rb); err != nil {
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t.Fatalf("PacketConn.ReadFrom failed: %v", err)
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}
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// See BUG section.
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//if net == "ip4" {
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// rb = ipv4Payload(rb)
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//}
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if m, err = parseICMPMessage(rb); err != nil {
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t.Fatalf("parseICMPMessage failed: %v", err)
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}
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switch m.Type {
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case icmpv4EchoRequest, icmpv6EchoRequest:
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continue
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}
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break
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}
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switch p := m.Body.(type) {
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case *icmpEcho:
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if p.ID != xid || p.Seq != xseq {
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t.Fatalf("got id=%v, seqnum=%v; expected id=%v, seqnum=%v", p.ID, p.Seq, xid, xseq)
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}
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default:
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t.Fatalf("got type=%v, code=%v; expected type=%v, code=%v", m.Type, m.Code, typ, 0)
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}
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}
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}
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func ipv4Payload(b []byte) []byte {
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if len(b) < 20 {
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return b
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}
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hdrlen := int(b[0]&0x0f) << 2
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return b[hdrlen:]
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}
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var ipConnLocalNameTests = []struct {
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net string
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laddr *IPAddr
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}{
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{"ip4:icmp", &IPAddr{IP: IPv4(127, 0, 0, 1)}},
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{"ip4:icmp", &IPAddr{}},
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{"ip4:icmp", nil},
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}
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func TestIPConnLocalName(t *testing.T) {
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switch runtime.GOOS {
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case "nacl", "plan9", "windows":
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t.Skipf("skipping test on %q", runtime.GOOS)
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default:
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if os.Getuid() != 0 {
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t.Skip("skipping test; must be root")
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}
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}
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for _, tt := range ipConnLocalNameTests {
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c, err := ListenIP(tt.net, tt.laddr)
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if err != nil {
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t.Fatalf("ListenIP failed: %v", err)
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}
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defer c.Close()
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if la := c.LocalAddr(); la == nil {
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t.Fatal("IPConn.LocalAddr failed")
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}
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}
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}
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func TestIPConnRemoteName(t *testing.T) {
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switch runtime.GOOS {
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case "plan9", "windows":
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t.Skipf("skipping test on %q", runtime.GOOS)
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default:
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if os.Getuid() != 0 {
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t.Skip("skipping test; must be root")
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}
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}
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raddr := &IPAddr{IP: IPv4(127, 0, 0, 1).To4()}
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c, err := DialIP("ip:tcp", &IPAddr{IP: IPv4(127, 0, 0, 1)}, raddr)
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if err != nil {
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t.Fatalf("DialIP failed: %v", err)
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}
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defer c.Close()
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if !reflect.DeepEqual(raddr, c.RemoteAddr()) {
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t.Fatalf("got %#v, expected %#v", c.RemoteAddr(), raddr)
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}
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}
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