VMess AEAD based packet length

(cherry picked from commit 08221600082a79376bdc262f2ffec1a3129ae98d)

testing/scenarios/vmess_test.go

@@ -1330,3 +1330,110 @@ func TestVMessZero(t *testing.T) {
 		t.Error(err)
 	}
 }
+
+func TestVMessGCMLengthAuth(t *testing.T) {
+	tcpServer := tcp.Server{
+		MsgProcessor: xor,
+	}
+	dest, err := tcpServer.Start()
+	common.Must(err)
+	defer tcpServer.Close()
+
+	userID := protocol.NewID(uuid.New())
+	serverPort := tcp.PickPort()
+	serverConfig := &core.Config{
+		App: []*serial.TypedMessage{
+			serial.ToTypedMessage(&log.Config{
+				ErrorLogLevel: clog.Severity_Debug,
+				ErrorLogType:  log.LogType_Console,
+			}),
+		},
+		Inbound: []*core.InboundHandlerConfig{
+			{
+				ReceiverSettings: serial.ToTypedMessage(&proxyman.ReceiverConfig{
+					PortRange: net.SinglePortRange(serverPort),
+					Listen:    net.NewIPOrDomain(net.LocalHostIP),
+				}),
+				ProxySettings: serial.ToTypedMessage(&inbound.Config{
+					User: []*protocol.User{
+						{
+							Account: serial.ToTypedMessage(&vmess.Account{
+								Id:      userID.String(),
+								AlterId: 64,
+							}),
+						},
+					},
+				}),
+			},
+		},
+		Outbound: []*core.OutboundHandlerConfig{
+			{
+				ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
+			},
+		},
+	}
+
+	clientPort := tcp.PickPort()
+	clientConfig := &core.Config{
+		App: []*serial.TypedMessage{
+			serial.ToTypedMessage(&log.Config{
+				ErrorLogLevel: clog.Severity_Debug,
+				ErrorLogType:  log.LogType_Console,
+			}),
+		},
+		Inbound: []*core.InboundHandlerConfig{
+			{
+				ReceiverSettings: serial.ToTypedMessage(&proxyman.ReceiverConfig{
+					PortRange: net.SinglePortRange(clientPort),
+					Listen:    net.NewIPOrDomain(net.LocalHostIP),
+				}),
+				ProxySettings: serial.ToTypedMessage(&dokodemo.Config{
+					Address: net.NewIPOrDomain(dest.Address),
+					Port:    uint32(dest.Port),
+					NetworkList: &net.NetworkList{
+						Network: []net.Network{net.Network_TCP},
+					},
+				}),
+			},
+		},
+		Outbound: []*core.OutboundHandlerConfig{
+			{
+				ProxySettings: serial.ToTypedMessage(&outbound.Config{
+					Receiver: []*protocol.ServerEndpoint{
+						{
+							Address: net.NewIPOrDomain(net.LocalHostIP),
+							Port:    uint32(serverPort),
+							User: []*protocol.User{
+								{
+									Account: serial.ToTypedMessage(&vmess.Account{
+										Id:      userID.String(),
+										AlterId: 64,
+										SecuritySettings: &protocol.SecurityConfig{
+											Type: protocol.SecurityType_AES128_GCM,
+										},
+										TestsEnabled: "AuthenticatedLength",
+									}),
+								},
+							},
+						},
+					},
+				}),
+			},
+		},
+	}
+
+	servers, err := InitializeServerConfigs(serverConfig, clientConfig)
+	if err != nil {
+		t.Fatal("Failed to initialize all servers: ", err.Error())
+	}
+	defer CloseAllServers(servers)
+
+	var errg errgroup.Group
+	for i := 0; i < 10; i++ {
+		errg.Go(testTCPConn(clientPort, 10240*1024, time.Second*40))
+	}
+
+	if err := errg.Wait(); err != nil {
+		t.Error(err)
+	}
+}