// 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) } }