1 // Copyright 2011 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package proxy 6 7 import ( 8 "io" 9 "net" 10 "net/url" 11 "strconv" 12 "sync" 13 "testing" 14 ) 15 16 func TestFromURL(t *testing.T) { 17 endSystem, err := net.Listen("tcp", "127.0.0.1:0") 18 if err != nil { 19 t.Fatalf("net.Listen failed: %v", err) 20 } 21 defer endSystem.Close() 22 gateway, err := net.Listen("tcp", "127.0.0.1:0") 23 if err != nil { 24 t.Fatalf("net.Listen failed: %v", err) 25 } 26 defer gateway.Close() 27 28 var wg sync.WaitGroup 29 wg.Add(1) 30 go socks5Gateway(t, gateway, endSystem, socks5Domain, &wg) 31 32 url, err := url.Parse("socks5://user:password@" + gateway.Addr().String()) 33 if err != nil { 34 t.Fatalf("url.Parse failed: %v", err) 35 } 36 proxy, err := FromURL(url, Direct) 37 if err != nil { 38 t.Fatalf("FromURL failed: %v", err) 39 } 40 _, port, err := net.SplitHostPort(endSystem.Addr().String()) 41 if err != nil { 42 t.Fatalf("net.SplitHostPort failed: %v", err) 43 } 44 if c, err := proxy.Dial("tcp", "localhost:"+port); err != nil { 45 t.Fatalf("FromURL.Dial failed: %v", err) 46 } else { 47 c.Close() 48 } 49 50 wg.Wait() 51 } 52 53 func TestSOCKS5(t *testing.T) { 54 endSystem, err := net.Listen("tcp", "127.0.0.1:0") 55 if err != nil { 56 t.Fatalf("net.Listen failed: %v", err) 57 } 58 defer endSystem.Close() 59 gateway, err := net.Listen("tcp", "127.0.0.1:0") 60 if err != nil { 61 t.Fatalf("net.Listen failed: %v", err) 62 } 63 defer gateway.Close() 64 65 var wg sync.WaitGroup 66 wg.Add(1) 67 go socks5Gateway(t, gateway, endSystem, socks5IP4, &wg) 68 69 proxy, err := SOCKS5("tcp", gateway.Addr().String(), nil, Direct) 70 if err != nil { 71 t.Fatalf("SOCKS5 failed: %v", err) 72 } 73 if c, err := proxy.Dial("tcp", endSystem.Addr().String()); err != nil { 74 t.Fatalf("SOCKS5.Dial failed: %v", err) 75 } else { 76 c.Close() 77 } 78 79 wg.Wait() 80 } 81 82 func socks5Gateway(t *testing.T, gateway, endSystem net.Listener, typ byte, wg *sync.WaitGroup) { 83 defer wg.Done() 84 85 c, err := gateway.Accept() 86 if err != nil { 87 t.Errorf("net.Listener.Accept failed: %v", err) 88 return 89 } 90 defer c.Close() 91 92 b := make([]byte, 32) 93 var n int 94 if typ == socks5Domain { 95 n = 4 96 } else { 97 n = 3 98 } 99 if _, err := io.ReadFull(c, b[:n]); err != nil { 100 t.Errorf("io.ReadFull failed: %v", err) 101 return 102 } 103 if _, err := c.Write([]byte{socks5Version, socks5AuthNone}); err != nil { 104 t.Errorf("net.Conn.Write failed: %v", err) 105 return 106 } 107 if typ == socks5Domain { 108 n = 16 109 } else { 110 n = 10 111 } 112 if _, err := io.ReadFull(c, b[:n]); err != nil { 113 t.Errorf("io.ReadFull failed: %v", err) 114 return 115 } 116 if b[0] != socks5Version || b[1] != socks5Connect || b[2] != 0x00 || b[3] != typ { 117 t.Errorf("got an unexpected packet: %#02x %#02x %#02x %#02x", b[0], b[1], b[2], b[3]) 118 return 119 } 120 if typ == socks5Domain { 121 copy(b[:5], []byte{socks5Version, 0x00, 0x00, socks5Domain, 9}) 122 b = append(b, []byte("localhost")...) 123 } else { 124 copy(b[:4], []byte{socks5Version, 0x00, 0x00, socks5IP4}) 125 } 126 host, port, err := net.SplitHostPort(endSystem.Addr().String()) 127 if err != nil { 128 t.Errorf("net.SplitHostPort failed: %v", err) 129 return 130 } 131 b = append(b, []byte(net.ParseIP(host).To4())...) 132 p, err := strconv.Atoi(port) 133 if err != nil { 134 t.Errorf("strconv.Atoi failed: %v", err) 135 return 136 } 137 b = append(b, []byte{byte(p >> 8), byte(p)}...) 138 if _, err := c.Write(b); err != nil { 139 t.Errorf("net.Conn.Write failed: %v", err) 140 return 141 } 142 } 143
