Example #1
0
func TestSocksConformance(t *testing.T) {
	assert := assert.On(t)

	tcpServer := tcp.Server{
		MsgProcessor: xor,
	}
	dest, err := tcpServer.Start()
	assert.Error(err).IsNil()
	defer tcpServer.Close()

	authPort := pickPort()
	noAuthPort := pickPort()
	serverConfig := &core.Config{
		Inbound: []*proxyman.InboundHandlerConfig{
			{
				ReceiverSettings: serial.ToTypedMessage(&proxyman.ReceiverConfig{
					PortRange: v2net.SinglePortRange(authPort),
					Listen:    v2net.NewIPOrDomain(v2net.LocalHostIP),
				}),
				ProxySettings: serial.ToTypedMessage(&socks.ServerConfig{
					AuthType: socks.AuthType_PASSWORD,
					Accounts: map[string]string{
						"Test Account": "Test Password",
					},
					Address:    v2net.NewIPOrDomain(v2net.LocalHostIP),
					UdpEnabled: false,
				}),
			},
			{
				ReceiverSettings: serial.ToTypedMessage(&proxyman.ReceiverConfig{
					PortRange: v2net.SinglePortRange(noAuthPort),
					Listen:    v2net.NewIPOrDomain(v2net.LocalHostIP),
				}),
				ProxySettings: serial.ToTypedMessage(&socks.ServerConfig{
					AuthType: socks.AuthType_NO_AUTH,
					Accounts: map[string]string{
						"Test Account": "Test Password",
					},
					Address:    v2net.NewIPOrDomain(v2net.LocalHostIP),
					UdpEnabled: false,
				}),
			},
		},
		Outbound: []*proxyman.OutboundHandlerConfig{
			{
				ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
			},
		},
	}

	assert.Error(InitializeServerConfig(serverConfig)).IsNil()

	{
		noAuthDialer, err := xproxy.SOCKS5("tcp", v2net.TCPDestination(v2net.LocalHostIP, noAuthPort).NetAddr(), nil, xproxy.Direct)
		assert.Error(err).IsNil()
		conn, err := noAuthDialer.Dial("tcp", dest.NetAddr())
		assert.Error(err).IsNil()

		payload := "test payload"
		nBytes, err := conn.Write([]byte(payload))
		assert.Error(err).IsNil()
		assert.Int(nBytes).Equals(len(payload))

		response := make([]byte, 1024)
		nBytes, err = conn.Read(response)
		assert.Error(err).IsNil()
		assert.Bytes(response[:nBytes]).Equals(xor([]byte(payload)))
		assert.Error(conn.Close()).IsNil()
	}

	{
		authDialer, err := xproxy.SOCKS5("tcp", v2net.TCPDestination(v2net.LocalHostIP, authPort).NetAddr(), &xproxy.Auth{User: "******", Password: "******"}, xproxy.Direct)
		assert.Error(err).IsNil()
		conn, err := authDialer.Dial("tcp", dest.NetAddr())
		assert.Error(err).IsNil()

		payload := "test payload"
		nBytes, err := conn.Write([]byte(payload))
		assert.Error(err).IsNil()
		assert.Int(nBytes).Equals(len(payload))

		response := make([]byte, 1024)
		nBytes, err = conn.Read(response)
		assert.Error(err).IsNil()
		assert.Bytes(response[:nBytes]).Equals(xor([]byte(payload)))
		assert.Error(conn.Close()).IsNil()
	}

	{
		dialer := socks4.DialSocksProxy(socks4.SOCKS4, v2net.TCPDestination(v2net.LocalHostIP, noAuthPort).NetAddr())
		conn, err := dialer("tcp", dest.NetAddr())
		assert.Error(err).IsNil()

		payload := "test payload"
		nBytes, err := conn.Write([]byte(payload))
		assert.Error(err).IsNil()
		assert.Int(nBytes).Equals(len(payload))

		response := make([]byte, 1024)
		nBytes, err = conn.Read(response)
		assert.Error(err).IsNil()
		assert.Bytes(response[:nBytes]).Equals(xor([]byte(payload)))
		assert.Error(conn.Close()).IsNil()
	}

	{
		dialer := socks4.DialSocksProxy(socks4.SOCKS4A, v2net.TCPDestination(v2net.LocalHostIP, noAuthPort).NetAddr())
		conn, err := dialer("tcp", v2net.TCPDestination(v2net.LocalHostDomain, tcpServer.Port).NetAddr())
		assert.Error(err).IsNil()

		payload := "test payload"
		nBytes, err := conn.Write([]byte(payload))
		assert.Error(err).IsNil()
		assert.Int(nBytes).Equals(len(payload))

		response := make([]byte, 1024)
		nBytes, err = conn.Read(response)
		assert.Error(err).IsNil()
		assert.Bytes(response[:nBytes]).Equals(xor([]byte(payload)))
		assert.Error(conn.Close()).IsNil()
	}

	CloseAllServers()
}
Example #2
0
func TestResolveIP(t *testing.T) {
	assert := assert.On(t)

	tcpServer := tcp.Server{
		MsgProcessor: xor,
	}
	dest, err := tcpServer.Start()
	assert.Error(err).IsNil()
	defer tcpServer.Close()

	serverPort := pickPort()
	serverConfig := &core.Config{
		App: []*serial.TypedMessage{
			serial.ToTypedMessage(&dns.Config{
				Hosts: map[string]*v2net.IPOrDomain{
					"google.com": v2net.NewIPOrDomain(dest.Address),
				},
			}),
			serial.ToTypedMessage(&router.Config{
				DomainStrategy: router.Config_IpIfNonMatch,
				Rule: []*router.RoutingRule{
					{
						Cidr: []*router.CIDR{
							{
								Ip:     []byte{127, 0, 0, 0},
								Prefix: 8,
							},
						},
						Tag: "direct",
					},
				},
			}),
		},
		Inbound: []*proxyman.InboundHandlerConfig{
			{
				ReceiverSettings: serial.ToTypedMessage(&proxyman.ReceiverConfig{
					PortRange: v2net.SinglePortRange(serverPort),
					Listen:    v2net.NewIPOrDomain(v2net.LocalHostIP),
				}),
				ProxySettings: serial.ToTypedMessage(&socks.ServerConfig{
					AuthType: socks.AuthType_NO_AUTH,
					Accounts: map[string]string{
						"Test Account": "Test Password",
					},
					Address:    v2net.NewIPOrDomain(v2net.LocalHostIP),
					UdpEnabled: false,
				}),
			},
		},
		Outbound: []*proxyman.OutboundHandlerConfig{
			{
				ProxySettings: serial.ToTypedMessage(&blackhole.Config{}),
			},
			{
				Tag: "direct",
				ProxySettings: serial.ToTypedMessage(&freedom.Config{
					DomainStrategy: freedom.Config_USE_IP,
				}),
			},
		},
	}

	assert.Error(InitializeServerConfig(serverConfig)).IsNil()

	{
		noAuthDialer, err := xproxy.SOCKS5("tcp", v2net.TCPDestination(v2net.LocalHostIP, serverPort).NetAddr(), nil, xproxy.Direct)
		assert.Error(err).IsNil()
		conn, err := noAuthDialer.Dial("tcp", fmt.Sprintf("google.com:%d", dest.Port))
		assert.Error(err).IsNil()

		payload := "test payload"
		nBytes, err := conn.Write([]byte(payload))
		assert.Error(err).IsNil()
		assert.Int(nBytes).Equals(len(payload))

		response := make([]byte, 1024)
		nBytes, err = conn.Read(response)
		assert.Error(err).IsNil()
		assert.Bytes(response[:nBytes]).Equals(xor([]byte(payload)))
		assert.Error(conn.Close()).IsNil()
	}

	CloseAllServers()
}
Example #3
0
func TestSocksBridgeTCP(t *testing.T) {
	assert := assert.On(t)

	tcpServer := tcp.Server{
		MsgProcessor: xor,
	}
	dest, err := tcpServer.Start()
	assert.Error(err).IsNil()
	defer tcpServer.Close()

	serverPort := pickPort()
	serverConfig := &core.Config{
		Inbound: []*proxyman.InboundHandlerConfig{
			{
				ReceiverSettings: serial.ToTypedMessage(&proxyman.ReceiverConfig{
					PortRange: v2net.SinglePortRange(serverPort),
					Listen:    v2net.NewIPOrDomain(v2net.LocalHostIP),
				}),
				ProxySettings: serial.ToTypedMessage(&socks.ServerConfig{
					AuthType: socks.AuthType_PASSWORD,
					Accounts: map[string]string{
						"Test Account": "Test Password",
					},
					Address:    v2net.NewIPOrDomain(v2net.LocalHostIP),
					UdpEnabled: false,
				}),
			},
		},
		Outbound: []*proxyman.OutboundHandlerConfig{
			{
				ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
			},
		},
	}

	clientPort := pickPort()
	clientConfig := &core.Config{
		Inbound: []*proxyman.InboundHandlerConfig{
			{
				ReceiverSettings: serial.ToTypedMessage(&proxyman.ReceiverConfig{
					PortRange: v2net.SinglePortRange(clientPort),
					Listen:    v2net.NewIPOrDomain(v2net.LocalHostIP),
				}),
				ProxySettings: serial.ToTypedMessage(&dokodemo.Config{
					Address: v2net.NewIPOrDomain(dest.Address),
					Port:    uint32(dest.Port),
					NetworkList: &v2net.NetworkList{
						Network: []v2net.Network{v2net.Network_TCP},
					},
				}),
			},
		},
		Outbound: []*proxyman.OutboundHandlerConfig{
			{
				ProxySettings: serial.ToTypedMessage(&socks.ClientConfig{
					Server: []*protocol.ServerEndpoint{
						{
							Address: v2net.NewIPOrDomain(v2net.LocalHostIP),
							Port:    uint32(serverPort),
							User: []*protocol.User{
								{
									Account: serial.ToTypedMessage(&socks.Account{
										Username: "******",
										Password: "******",
									}),
								},
							},
						},
					},
				}),
			},
		},
	}

	assert.Error(InitializeServerConfig(serverConfig)).IsNil()
	assert.Error(InitializeServerConfig(clientConfig)).IsNil()

	conn, err := net.DialTCP("tcp", nil, &net.TCPAddr{
		IP:   []byte{127, 0, 0, 1},
		Port: int(clientPort),
	})
	assert.Error(err).IsNil()

	payload := "test payload"
	nBytes, err := conn.Write([]byte(payload))
	assert.Error(err).IsNil()
	assert.Int(nBytes).Equals(len(payload))

	response := make([]byte, 1024)
	nBytes, err = conn.Read(response)
	assert.Error(err).IsNil()
	assert.Bytes(response[:nBytes]).Equals(xor([]byte(payload)))
	assert.Error(conn.Close()).IsNil()

	CloseAllServers()
}
Example #4
0
func TestNoOpConnectionHeader(t *testing.T) {
	assert := assert.On(t)

	tcpServer := tcp.Server{
		MsgProcessor: xor,
	}
	dest, err := tcpServer.Start()
	assert.Error(err).IsNil()
	defer tcpServer.Close()

	userID := protocol.NewID(uuid.New())
	serverPort := pickPort()
	serverConfig := &core.Config{
		Inbound: []*proxyman.InboundHandlerConfig{
			{
				ReceiverSettings: serial.ToTypedMessage(&proxyman.ReceiverConfig{
					PortRange: v2net.SinglePortRange(serverPort),
					Listen:    v2net.NewIPOrDomain(v2net.LocalHostIP),
					StreamSettings: &internet.StreamConfig{
						TransportSettings: []*internet.TransportConfig{
							{
								Protocol: internet.TransportProtocol_TCP,
								Settings: serial.ToTypedMessage(&tcptransport.Config{
									HeaderSettings: serial.ToTypedMessage(&http.Config{}),
								}),
							},
						},
					},
				}),
				ProxySettings: serial.ToTypedMessage(&inbound.Config{
					User: []*protocol.User{
						{
							Account: serial.ToTypedMessage(&vmess.Account{
								Id: userID.String(),
							}),
						},
					},
				}),
			},
		},
		Outbound: []*proxyman.OutboundHandlerConfig{
			{
				ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
			},
		},
	}

	clientPort := pickPort()
	clientConfig := &core.Config{
		Inbound: []*proxyman.InboundHandlerConfig{
			{
				ReceiverSettings: serial.ToTypedMessage(&proxyman.ReceiverConfig{
					PortRange: v2net.SinglePortRange(clientPort),
					Listen:    v2net.NewIPOrDomain(v2net.LocalHostIP),
				}),
				ProxySettings: serial.ToTypedMessage(&dokodemo.Config{
					Address: v2net.NewIPOrDomain(dest.Address),
					Port:    uint32(dest.Port),
					NetworkList: &v2net.NetworkList{
						Network: []v2net.Network{v2net.Network_TCP},
					},
				}),
			},
		},
		Outbound: []*proxyman.OutboundHandlerConfig{
			{
				ProxySettings: serial.ToTypedMessage(&outbound.Config{
					Receiver: []*protocol.ServerEndpoint{
						{
							Address: v2net.NewIPOrDomain(v2net.LocalHostIP),
							Port:    uint32(serverPort),
							User: []*protocol.User{
								{
									Account: serial.ToTypedMessage(&vmess.Account{
										Id: userID.String(),
									}),
								},
							},
						},
					},
				}),
				SenderSettings: serial.ToTypedMessage(&proxyman.SenderConfig{
					StreamSettings: &internet.StreamConfig{
						TransportSettings: []*internet.TransportConfig{
							{
								Protocol: internet.TransportProtocol_TCP,
								Settings: serial.ToTypedMessage(&tcptransport.Config{
									HeaderSettings: serial.ToTypedMessage(&http.Config{}),
								}),
							},
						},
					},
				}),
			},
		},
	}

	assert.Error(InitializeServerConfig(serverConfig)).IsNil()
	assert.Error(InitializeServerConfig(clientConfig)).IsNil()

	conn, err := net.DialTCP("tcp", nil, &net.TCPAddr{
		IP:   []byte{127, 0, 0, 1},
		Port: int(clientPort),
	})
	assert.Error(err).IsNil()

	payload := "dokodemo request."
	nBytes, err := conn.Write([]byte(payload))
	assert.Error(err).IsNil()
	assert.Int(nBytes).Equals(len(payload))

	response := readFrom(conn, time.Second*2, len(payload))
	assert.Bytes(response).Equals(xor([]byte(payload)))
	assert.Error(conn.Close()).IsNil()

	CloseAllServers()
}
Example #5
0
func TestDokodemoTCP(t *testing.T) {
	assert := assert.On(t)

	tcpServer := tcp.Server{
		MsgProcessor: xor,
	}
	dest, err := tcpServer.Start()
	assert.Error(err).IsNil()
	defer tcpServer.Close()

	userID := protocol.NewID(uuid.New())
	serverPort := pickPort()
	serverConfig := &core.Config{
		Inbound: []*proxyman.InboundHandlerConfig{
			{
				ReceiverSettings: serial.ToTypedMessage(&proxyman.ReceiverConfig{
					PortRange: v2net.SinglePortRange(serverPort),
					Listen:    v2net.NewIPOrDomain(v2net.LocalHostIP),
				}),
				ProxySettings: serial.ToTypedMessage(&inbound.Config{
					User: []*protocol.User{
						{
							Account: serial.ToTypedMessage(&vmess.Account{
								Id: userID.String(),
							}),
						},
					},
				}),
			},
		},
		Outbound: []*proxyman.OutboundHandlerConfig{
			{
				ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
			},
		},
	}

	clientPort := uint32(pickPort())
	clientPortRange := uint32(5)
	clientConfig := &core.Config{
		Inbound: []*proxyman.InboundHandlerConfig{
			{
				ReceiverSettings: serial.ToTypedMessage(&proxyman.ReceiverConfig{
					PortRange: &v2net.PortRange{From: clientPort, To: clientPort + clientPortRange},
					Listen:    v2net.NewIPOrDomain(v2net.LocalHostIP),
				}),
				ProxySettings: serial.ToTypedMessage(&dokodemo.Config{
					Address: v2net.NewIPOrDomain(dest.Address),
					Port:    uint32(dest.Port),
					NetworkList: &v2net.NetworkList{
						Network: []v2net.Network{v2net.Network_TCP},
					},
				}),
			},
		},
		Outbound: []*proxyman.OutboundHandlerConfig{
			{
				ProxySettings: serial.ToTypedMessage(&outbound.Config{
					Receiver: []*protocol.ServerEndpoint{
						{
							Address: v2net.NewIPOrDomain(v2net.LocalHostIP),
							Port:    uint32(serverPort),
							User: []*protocol.User{
								{
									Account: serial.ToTypedMessage(&vmess.Account{
										Id: userID.String(),
									}),
								},
							},
						},
					},
				}),
			},
		},
	}

	assert.Error(InitializeServerConfig(serverConfig)).IsNil()
	assert.Error(InitializeServerConfig(clientConfig)).IsNil()

	for port := clientPort; port <= clientPort+clientPortRange; port++ {
		conn, err := net.DialTCP("tcp", nil, &net.TCPAddr{
			IP:   []byte{127, 0, 0, 1},
			Port: int(port),
		})
		assert.Error(err).IsNil()

		payload := "dokodemo request."
		nBytes, err := conn.Write([]byte(payload))
		assert.Error(err).IsNil()
		assert.Int(nBytes).Equals(len(payload))

		response := make([]byte, 1024)
		nBytes, err = conn.Read(response)
		assert.Error(err).IsNil()
		assert.Bytes(response[:nBytes]).Equals(xor([]byte(payload)))
		assert.Error(conn.Close()).IsNil()
	}

	CloseAllServers()
}
Example #6
0
func TestForward(t *testing.T) {
	assert := assert.On(t)

	tcpServer := tcp.Server{
		MsgProcessor: xor,
	}
	dest, err := tcpServer.Start()
	assert.Error(err).IsNil()
	defer tcpServer.Close()

	serverPort := pickPort()
	serverConfig := &core.Config{
		Inbound: []*proxyman.InboundHandlerConfig{
			{
				ReceiverSettings: serial.ToTypedMessage(&proxyman.ReceiverConfig{
					PortRange: v2net.SinglePortRange(serverPort),
					Listen:    v2net.NewIPOrDomain(v2net.LocalHostIP),
				}),
				ProxySettings: serial.ToTypedMessage(&socks.ServerConfig{
					AuthType: socks.AuthType_NO_AUTH,
					Accounts: map[string]string{
						"Test Account": "Test Password",
					},
					Address:    v2net.NewIPOrDomain(v2net.LocalHostIP),
					UdpEnabled: false,
				}),
			},
		},
		Outbound: []*proxyman.OutboundHandlerConfig{
			{
				ProxySettings: serial.ToTypedMessage(&freedom.Config{
					DestinationOverride: &freedom.DestinationOverride{
						Server: &protocol.ServerEndpoint{
							Address: v2net.NewIPOrDomain(v2net.LocalHostIP),
							Port:    uint32(dest.Port),
						},
					},
				}),
			},
		},
	}

	assert.Error(InitializeServerConfig(serverConfig)).IsNil()

	{
		noAuthDialer, err := xproxy.SOCKS5("tcp", v2net.TCPDestination(v2net.LocalHostIP, serverPort).NetAddr(), nil, xproxy.Direct)
		assert.Error(err).IsNil()
		conn, err := noAuthDialer.Dial("tcp", "google.com:80")
		assert.Error(err).IsNil()

		payload := "test payload"
		nBytes, err := conn.Write([]byte(payload))
		assert.Error(err).IsNil()
		assert.Int(nBytes).Equals(len(payload))

		response := make([]byte, 1024)
		nBytes, err = conn.Read(response)
		assert.Error(err).IsNil()
		assert.Bytes(response[:nBytes]).Equals(xor([]byte(payload)))
		assert.Error(conn.Close()).IsNil()
	}

	CloseAllServers()
}
Example #7
0
func TestBlackhole(t *testing.T) {
	assert := assert.On(t)

	tcpServer := tcp.Server{
		MsgProcessor: xor,
	}
	dest, err := tcpServer.Start()
	assert.Error(err).IsNil()
	defer tcpServer.Close()

	tcpServer2 := tcp.Server{
		MsgProcessor: xor,
	}
	dest2, err := tcpServer2.Start()
	assert.Error(err).IsNil()
	defer tcpServer2.Close()

	serverPort := pickPort()
	serverPort2 := pickPort()
	serverConfig := &core.Config{
		Inbound: []*proxyman.InboundHandlerConfig{
			{
				ReceiverSettings: serial.ToTypedMessage(&proxyman.ReceiverConfig{
					PortRange: v2net.SinglePortRange(serverPort),
					Listen:    v2net.NewIPOrDomain(v2net.LocalHostIP),
				}),
				ProxySettings: serial.ToTypedMessage(&dokodemo.Config{
					Address: v2net.NewIPOrDomain(dest.Address),
					Port:    uint32(dest.Port),
					NetworkList: &v2net.NetworkList{
						Network: []v2net.Network{v2net.Network_TCP},
					},
				}),
			},
			{
				ReceiverSettings: serial.ToTypedMessage(&proxyman.ReceiverConfig{
					PortRange: v2net.SinglePortRange(serverPort2),
					Listen:    v2net.NewIPOrDomain(v2net.LocalHostIP),
				}),
				ProxySettings: serial.ToTypedMessage(&dokodemo.Config{
					Address: v2net.NewIPOrDomain(dest2.Address),
					Port:    uint32(dest2.Port),
					NetworkList: &v2net.NetworkList{
						Network: []v2net.Network{v2net.Network_TCP},
					},
				}),
			},
		},
		Outbound: []*proxyman.OutboundHandlerConfig{
			{
				Tag:           "direct",
				ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
			},
			{
				Tag:           "blocked",
				ProxySettings: serial.ToTypedMessage(&blackhole.Config{}),
			},
		},
		App: []*serial.TypedMessage{
			serial.ToTypedMessage(&router.Config{
				Rule: []*router.RoutingRule{
					{
						Tag:       "blocked",
						PortRange: v2net.SinglePortRange(dest2.Port),
					},
				},
			}),
		},
	}

	assert.Error(InitializeServerConfig(serverConfig)).IsNil()

	conn, err := net.DialTCP("tcp", nil, &net.TCPAddr{
		IP:   []byte{127, 0, 0, 1},
		Port: int(serverPort2),
	})
	assert.Error(err).IsNil()

	payload := "dokodemo request."
	{

		nBytes, err := conn.Write([]byte(payload))
		assert.Error(err).IsNil()
		assert.Int(nBytes).Equals(len(payload))
	}

	{
		response := make([]byte, 1024)
		_, err := conn.Read(response)
		assert.Error(err).IsNotNil()
	}

	assert.Error(conn.Close()).IsNil()

	CloseAllServers()
}
Example #8
0
func TestPassiveConnection(t *testing.T) {
	assert := assert.On(t)

	tcpServer := tcp.Server{
		MsgProcessor: xor,
		SendFirst:    []byte("send first"),
	}
	dest, err := tcpServer.Start()
	assert.Error(err).IsNil()
	defer tcpServer.Close()

	serverPort := pickPort()
	serverConfig := &core.Config{
		Inbound: []*proxyman.InboundHandlerConfig{
			{
				ReceiverSettings: serial.ToTypedMessage(&proxyman.ReceiverConfig{
					PortRange:              v2net.SinglePortRange(serverPort),
					Listen:                 v2net.NewIPOrDomain(v2net.LocalHostIP),
					AllowPassiveConnection: true,
				}),
				ProxySettings: serial.ToTypedMessage(&dokodemo.Config{
					Address: v2net.NewIPOrDomain(dest.Address),
					Port:    uint32(dest.Port),
					NetworkList: &v2net.NetworkList{
						Network: []v2net.Network{v2net.Network_TCP},
					},
				}),
			},
		},
		Outbound: []*proxyman.OutboundHandlerConfig{
			{
				ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
			},
		},
	}

	assert.Error(InitializeServerConfig(serverConfig)).IsNil()

	conn, err := net.DialTCP("tcp", nil, &net.TCPAddr{
		IP:   []byte{127, 0, 0, 1},
		Port: int(serverPort),
	})
	assert.Error(err).IsNil()

	{
		response := make([]byte, 1024)
		nBytes, err := conn.Read(response)
		assert.Error(err).IsNil()
		assert.String(string(response[:nBytes])).Equals("send first")
	}

	payload := "dokodemo request."
	{

		nBytes, err := conn.Write([]byte(payload))
		assert.Error(err).IsNil()
		assert.Int(nBytes).Equals(len(payload))
	}

	{
		response := make([]byte, 1024)
		nBytes, err := conn.Read(response)
		assert.Error(err).IsNil()
		assert.Bytes(response[:nBytes]).Equals(xor([]byte(payload)))
	}

	assert.Error(conn.Close()).IsNil()

	CloseAllServers()
}