Esempio n. 1
0
        public async Task Send(T message)
        {
            if (message.Equals(default(T)))
            {
                throw new ArgumentNullException(nameof(message));
            }

            bool alive = Socket.Ping();

            if (!alive)
            {
                throw new TransferException($"The Socket to {EndPoint} is not responding!");
            }

            try
            {
                // build byte[] out of message (serialize with ZeroFormatter)
                var bytes   = ZeroFormatterSerializer.Serialize(message);
                var segment = new ArraySegment <byte>(bytes);

                int size = bytes.Length;
                await LeadingByteProcessor.SendLeading(Socket, size)
                .ConfigureAwait(false);     // Send receiver the byte count

                //TODO: Decide whether to catch errors in buffer-loop and continue once fixed or cancel whole send?
                int written = 0;
                while (written < size)
                {
                    int send = size - written; // current buffer size
                    if (send > SendBufferSize)
                    {
                        send = SendBufferSize;                  // max size
                    }
                    var slice = segment.SliceEx(written, send); // buffered portion of array
                    written = await Socket.SendAsync(slice, SocketFlags.None).ConfigureAwait(false);
                }

                if (written < 1)
                {
                    throw new TransferException($"{written} bytes were sent! " +
                                                "Null bytes could mean a connection shutdown.");
                }
            } catch (SocketException)
            {
                ConnectionLost?.Invoke(EndPoint);
                // On any error - cancel whole buffered writing
                if (AutoReconnect)
                {
                    await Reconnect().ConfigureAwait(false); // Try reconnecting and re-send everything once reconnected
                }
                else
                {
                    throw; // Throw if we're not trying to reconnect
                }
            }
        }
Esempio n. 2
0
        public async Task Send(T message, IPEndPoint to)
        {
            if (message.Equals(default(T)))
            {
                throw new ArgumentNullException(nameof(message));
            }

            // Build a byte array of the serialized data
            byte[] bytes = ZeroFormatterSerializer.Serialize(message);
            ArraySegment <byte> segment = new ArraySegment <byte>(bytes);

            // Find socket
            var socket = Sockets.FirstOrDefault(c => c.Key.Equals(to)).Value;

            if (socket == null)
            {
                throw new NetworkInterfaceException($"The IP Address {to} could not be found!");
            }

            int size = bytes.Length;
            await LeadingByteProcessor.SendLeading(socket, size).ConfigureAwait(false); // send leading size

            //TODO: Do something when sending interrupts? Wait for client to come back?
            // Write buffered
            int written = 0;

            while (written < size)
            {
                int send = size - written; // current buffer size
                if (send > SendBufferSize)
                {
                    send = SendBufferSize; // max size
                }

                ArraySegment <byte> slice = segment.SliceEx(written, send); // buffered portion of array
                written = await socket.SendAsync(slice, SocketFlags.None).ConfigureAwait(false);
            }

            if (written < 1)
            {
                throw new TransferException($"{written} bytes were sent! " +
                                            "Null bytes could mean a connection shutdown.");
            }
        }