Example #1
0
        public override void Read(ChannelHandlerContext ctx, object msg)
        {
            // server-side:
            // message comes (over network) from sender
            // -> correct DispatchHandler handles response

            // Java uses a SimpleChannelInboundHandler that only expects Message objects
            var requestMessage = msg as Message.Message;
            if (requestMessage == null)
            {
                return;
            }
            
            Logger.Debug("Received request message {0} from channel {1}.", requestMessage, ctx.Channel);
            if (requestMessage.Version != _p2PId)
            {
                Logger.Error("Wrong version. We are looking for {0}, but we got {1}. Received: {2}.", _p2PId, requestMessage.Version, requestMessage);
                ctx.Close(); // TODO used?
                lock (_peerBeanMaster.PeerStatusListeners)
                {
                    foreach (IPeerStatusListener listener in _peerBeanMaster.PeerStatusListeners)
                    {
                        listener.PeerFailed(requestMessage.Sender,
                            new PeerException(PeerException.AbortCauseEnum.PeerError, "Wrong P2P version."));
                    }
                }
                return;
            }
            if (!requestMessage.IsRequest())
            {
                Logger.Debug("Handing request message to the next handler. {0}", requestMessage);
                ctx.FireRead(msg);
                return;
            }

            IResponder responder = new DirectResponder(this, _peerBeanMaster, ctx, requestMessage);
            DispatchHandler myHandler = AssociatedHandler(requestMessage);
            if (myHandler != null)
            {
                bool isUdp = ctx.Channel.IsUdp;
                bool isRelay = requestMessage.Sender.IsRelayed;
                if (!isRelay && requestMessage.PeerSocketAddresses.Count != 0)
                {
                    PeerAddress sender =
                        requestMessage.Sender.ChangePeerSocketAddresses(requestMessage.PeerSocketAddresses);
                    requestMessage.SetSender(sender);
                }
                Logger.Debug("About to respond to request message {0}.", requestMessage);

                // handle the request message
                PeerConnection peerConnection = null;
                if (!isUdp)
                {
                    var tcpChannel = ctx.Channel as ITcpChannel;
                    peerConnection = new PeerConnection(requestMessage.Sender, tcpChannel, _heartBeatMillis);
                }
                myHandler.ForwardMessage(requestMessage, peerConnection, responder);
            }
            else
            {
                // do better error handling
                // if a handler is not present at all, print a warning
                if (_ioHandlers.Count == 0)
                {
                    Logger.Debug("No handler found for request message {0}. This peer has probably been shut down.", requestMessage);
                }
                else
                {
                    var knownCommands = KnownCommands();
                    if (knownCommands.Contains(Convert.ToInt32(requestMessage.Command)))
                    {
                        var sb = new StringBuilder();
                        foreach (int cmd in knownCommands)
                        {
                            sb.Append((Rpc.Rpc.Commands) cmd + "; ");
                        }
                        Logger.Warn("No handler found for request message {0}. Is the RPC command {1} registered? Found registered: {2}.", requestMessage, (Rpc.Rpc.Commands) requestMessage.Command, sb);
                    }
                    else
                    {
                        Logger.Debug("No handler found for request message {0}. This peer has probably been partially shut down.", requestMessage);
                    }
                }

                // return response that states that no handler was found
                var responseMessage = DispatchHandler.CreateResponseMessage(requestMessage,
                    Message.Message.MessageType.UnknownId, _peerBeanMaster.ServerPeerAddress);

                Respond(ctx, responseMessage);
            }
        }
Example #2
0
        public override void Read(ChannelHandlerContext ctx, object msg)
        {
            // server-side:
            // message comes (over network) from sender
            // -> correct DispatchHandler handles response

            // Java uses a SimpleChannelInboundHandler that only expects Message objects
            var requestMessage = msg as Message.Message;

            if (requestMessage == null)
            {
                return;
            }

            Logger.Debug("Received request message {0} from channel {1}.", requestMessage, ctx.Channel);
            if (requestMessage.Version != _p2PId)
            {
                Logger.Error("Wrong version. We are looking for {0}, but we got {1}. Received: {2}.", _p2PId, requestMessage.Version, requestMessage);
                ctx.Close(); // TODO used?
                lock (_peerBeanMaster.PeerStatusListeners)
                {
                    foreach (IPeerStatusListener listener in _peerBeanMaster.PeerStatusListeners)
                    {
                        listener.PeerFailed(requestMessage.Sender,
                                            new PeerException(PeerException.AbortCauseEnum.PeerError, "Wrong P2P version."));
                    }
                }
                return;
            }
            if (!requestMessage.IsRequest())
            {
                Logger.Debug("Handing request message to the next handler. {0}", requestMessage);
                ctx.FireRead(msg);
                return;
            }

            IResponder      responder = new DirectResponder(this, _peerBeanMaster, ctx, requestMessage);
            DispatchHandler myHandler = AssociatedHandler(requestMessage);

            if (myHandler != null)
            {
                bool isUdp   = ctx.Channel.IsUdp;
                bool isRelay = requestMessage.Sender.IsRelayed;
                if (!isRelay && requestMessage.PeerSocketAddresses.Count != 0)
                {
                    PeerAddress sender =
                        requestMessage.Sender.ChangePeerSocketAddresses(requestMessage.PeerSocketAddresses);
                    requestMessage.SetSender(sender);
                }
                Logger.Debug("About to respond to request message {0}.", requestMessage);

                // handle the request message
                PeerConnection peerConnection = null;
                if (!isUdp)
                {
                    var tcpChannel = ctx.Channel as ITcpChannel;
                    peerConnection = new PeerConnection(requestMessage.Sender, tcpChannel, _heartBeatMillis);
                }
                myHandler.ForwardMessage(requestMessage, peerConnection, responder);
            }
            else
            {
                // do better error handling
                // if a handler is not present at all, print a warning
                if (_ioHandlers.Count == 0)
                {
                    Logger.Debug("No handler found for request message {0}. This peer has probably been shut down.", requestMessage);
                }
                else
                {
                    var knownCommands = KnownCommands();
                    if (knownCommands.Contains(Convert.ToInt32(requestMessage.Command)))
                    {
                        var sb = new StringBuilder();
                        foreach (int cmd in knownCommands)
                        {
                            sb.Append((Rpc.Rpc.Commands)cmd + "; ");
                        }
                        Logger.Warn("No handler found for request message {0}. Is the RPC command {1} registered? Found registered: {2}.", requestMessage, (Rpc.Rpc.Commands)requestMessage.Command, sb);
                    }
                    else
                    {
                        Logger.Debug("No handler found for request message {0}. This peer has probably been partially shut down.", requestMessage);
                    }
                }

                // return response that states that no handler was found
                var responseMessage = DispatchHandler.CreateResponseMessage(requestMessage,
                                                                            Message.Message.MessageType.UnknownId, _peerBeanMaster.ServerPeerAddress);

                Respond(ctx, responseMessage);
            }
        }