Пример #1
0
        /// <summary>
        /// Reads socket and processes packet
        /// </summary>
        /// <param name="socket">The active socket.</param>
        protected virtual void OnSocket(Socket socket)
        {
            try
            {
                if (socket.Poll(-1, SelectMode.SelectRead))
                {
                    var args = new ClientConnectedEventArgs(socket, _bufferSize);

                    EndPoint remoteEndPoint = new  IPEndPoint(0, 0);

                    if (socket.Available == 0)
                    {
                        return;
                    }

                    args.ChannelBuffer.BytesTransferred = socket.ReceiveFrom(args.ChannelBuffer.Buffer, SocketFlags.None, ref remoteEndPoint);
                    args.Channel.RemoteEndpoint         = remoteEndPoint;

                    if (args.ChannelBuffer.BytesTransferred > 0)
                    {
                        OnClientConnected(args);

                        if (args.AllowConnect == false)
                        {
                            if (args.Response != null)
                            {
                                int sentBytes = 0;
                                while ((sentBytes = args.Response.Read(sendBuffer, 0, sendBuffer.Length)) > 0)
                                {
                                    socket.Send(sendBuffer, sentBytes, SocketFlags.None);
                                }
                            }
                            Logger.WriteDebug(this, "PACKET request from  " +
                                              args.Channel.RemoteEndpoint.ToString() +
                                              " with channel id " +
                                              args.Channel.ChannelId.ToString() +
                                              " was denied access to connect.");
                        }
                    }
                }
                else
                {
                    Thread.Sleep(10);
                }
            }
            catch (SocketException ex)
            {
                if (ex.ErrorCode == (int)SocketError.ConnectionReset)
                {
                    return;
                }
            }
            catch (Exception ex)
            {
                HandleDisconnect(SocketError.SocketError, ex);
            }
        }
Пример #2
0
 /// <summary>
 ///     A client has connected (nothing have been sent or received yet)
 /// </summary>
 /// <returns></returns>
 protected virtual void OnClientConnected(ClientConnectedEventArgs args)
 {
     ClientConnected(this, args);
 }
Пример #3
0
        private void OnClientConnected(object sender, ClientConnectedEventArgs args)
        {
            //Logger.WriteDebug(this, "Pipeline => OnClientRequest");

            try
            {
                _decoder.ProcessReadBytes(args.Channel, args.ChannelBuffer);
            }
            catch (Exception ex)
            {
                SendFailure(args.Channel, ex);
            }
        }
Пример #4
0
        /// <summary>
        ///  Remote client connects and makes a request.
        /// </summary>
        private void OnClientConnect(object sender, ClientConnectedEventArgs args)
        {

            SocketBuffer channelBuffer = args.ChannelBuffer;

            if (channelBuffer != null
                && args.Channel.IsConnected
                && channelBuffer.BytesTransferred >= Constants.DNS_MIN_MESSAGE_SIZE
                && channelBuffer.BytesTransferred <= Constants.DNS_MAX_MESSAGE_SIZE)
            {
                Logger.WriteDebug(this, "PACKET request with channel id " +
                    args.Channel.ChannelId.ToString() +
                    " was received from " +
                    args.Channel.RemoteEndpoint.ToString() +
                    " and queued for processing...");

                DnsMessageEventArgs messageArgs = new DnsMessageEventArgs(args.Channel, args.ChannelBuffer);
                OnDnsMessageReceived(this, messageArgs);

                ThreadPool.QueueUserWorkItem(new WaitCallback(ProcessRequest), messageArgs);
            }
        }
Пример #5
0
 /// <summary>
 ///     A client has connected (nothing have been sent or received yet)
 /// </summary>
 /// <returns></returns>
 protected virtual void OnClientConnected(ClientConnectedEventArgs args)
 {
     ClientConnected(this, args);
 }
Пример #6
0
        /// <summary>
        /// Reads socket and processes packet
        /// </summary>
        /// <param name="socket">The active socket.</param>
        protected virtual void OnSocket(Socket socket)
        {
            try
            {
                if (socket.Poll(-1, SelectMode.SelectRead))
                {
                    var args = new ClientConnectedEventArgs(socket, _bufferSize);

                    EndPoint remoteEndPoint = new  IPEndPoint(0, 0);

                    if (socket.Available == 0)
                        return;

                    args.ChannelBuffer.BytesTransferred = socket.ReceiveFrom(args.ChannelBuffer.Buffer, SocketFlags.None, ref remoteEndPoint);
                    args.Channel.RemoteEndpoint = remoteEndPoint;

                    if (args.ChannelBuffer.BytesTransferred > 0)
                    {
                        OnClientConnected(args);

                        if (args.AllowConnect == false)
                        {
                            if (args.Response != null)
                            {
                                int sentBytes = 0;
                                while ((sentBytes = args.Response.Read(sendBuffer, 0, sendBuffer.Length)) > 0)
                                {
                                    socket.Send(sendBuffer, sentBytes, SocketFlags.None);
                                }
                            }
                            Logger.WriteDebug(this, "PACKET request from  " +
                                args.Channel.RemoteEndpoint.ToString() +
                                " with channel id " +
                                args.Channel.ChannelId.ToString() +
                                " was denied access to connect.");
                        }
                    }
                }
                else
                {
                    Thread.Sleep(10);
                }
            }
            catch (SocketException ex)
            {
                if (ex.ErrorCode == (int)SocketError.ConnectionReset)
                    return;

            }
            catch (Exception ex)
            {
                HandleDisconnect(SocketError.SocketError, ex);
            }
        }