func startCommunicate(request *vmessio.VMessRequest, dest v2net.Address, ray core.OutboundRay) error {
input := ray.OutboundInput()
output := ray.OutboundOutput()
conn, err := net.DialTCP("tcp", nil, &net.TCPAddr{dest.IP, int(dest.Port), ""})
if err != nil {
log.Error("Failed to open tcp (%s): %v", dest.String(), err)
close(output)
return err
}
log.Info("VMessOut: Tunneling request for %s", request.Address.String())
defer conn.Close()
requestFinish := make(chan bool)
responseFinish := make(chan bool)
go handleRequest(conn, request, input, requestFinish)
go handleResponse(conn, request, output, responseFinish)
<-requestFinish
conn.CloseWrite()
<-responseFinish
return nil
}
func (vconn *FreedomConnection) Start(ray core.OutboundRay) error {
input := ray.OutboundInput()
output := ray.OutboundOutput()
conn, err := net.Dial("tcp", vconn.dest.String())
if err != nil {
close(output)
return log.Error("Freedom: Failed to open tcp connection: %s : %v", vconn.dest.String(), err)
}
log.Info("Freedom: Sending outbound tcp: %s", vconn.dest.String())
readFinish := make(chan bool)
writeFinish := make(chan bool)
go vconn.DumpInput(conn, input, writeFinish)
go vconn.DumpOutput(conn, output, readFinish)
go vconn.CloseConn(conn, readFinish, writeFinish)
return nil
}
func (server *SocksServer) HandleConnection(connection net.Conn) error {
defer connection.Close()
auth, err := socksio.ReadAuthentication(connection)
if err != nil {
log.Error("Error on reading authentication: %v", err)
return err
}
expectedAuthMethod := socksio.AuthNotRequired
if server.config.AuthMethod == JsonAuthMethodUserPass {
expectedAuthMethod = socksio.AuthUserPass
}
if !auth.HasAuthMethod(expectedAuthMethod) {
authResponse := socksio.NewAuthenticationResponse(socksio.AuthNoMatchingMethod)
socksio.WriteAuthentication(connection, authResponse)
log.Info("Client doesn't support allowed any auth methods.")
return ErrorAuthenticationFailed
}
log.Debug("Auth accepted, responding auth.")
authResponse := socksio.NewAuthenticationResponse(socksio.AuthNotRequired)
socksio.WriteAuthentication(connection, authResponse)
request, err := socksio.ReadRequest(connection)
if err != nil {
log.Error("Error on reading socks request: %v", err)
return err
}
response := socksio.NewSocks5Response()
if request.Command == socksio.CmdBind || request.Command == socksio.CmdUdpAssociate {
response := socksio.NewSocks5Response()
response.Error = socksio.ErrorCommandNotSupported
socksio.WriteResponse(connection, response)
log.Info("Unsupported socks command %d", request.Command)
return ErrorCommandNotSupported
}
response.Error = socksio.ErrorSuccess
response.Port = request.Port
response.AddrType = request.AddrType
switch response.AddrType {
case socksio.AddrTypeIPv4:
copy(response.IPv4[:], request.IPv4[:])
case socksio.AddrTypeIPv6:
copy(response.IPv6[:], request.IPv6[:])
case socksio.AddrTypeDomain:
response.Domain = request.Domain
}
log.Debug("Socks response port = %d", response.Port)
socksio.WriteResponse(connection, response)
ray := server.vPoint.NewInboundConnectionAccepted(request.Destination())
input := ray.InboundInput()
output := ray.InboundOutput()
finish := make(chan bool, 2)
go server.dumpInput(connection, input, finish)
go server.dumpOutput(connection, output, finish)
server.waitForFinish(finish)
return nil
}