/// <summary>
/// Sends a message to the server without waiting for a response (one-way communication).
/// </summary>
/// <param name="message">The message to send.</param>
public void Send(IMessage message)
{
// Sanitize
if (message?.Content == null)
{
throw new ArgumentNullException(nameof(message));
}
if (!_isConnected)
{
return;
}
// Get the current thread ID
var threadId = GetThreadId();
var messageWithControlBytes = ProtocolHelper.AppendControlBytesToMessage(message, threadId);
var socketAsyncEventArgs = _socketAsyncEventArgsSendPool.Pop();
socketAsyncEventArgs.SetBuffer(messageWithControlBytes.Content, 0, messageWithControlBytes.Length);
socketAsyncEventArgs.UserToken = messageWithControlBytes;
_sendBufferQueue.Enqueue(socketAsyncEventArgs);
}
/// <summary>
/// Sends a message to the server without waiting for a response (one-way communication).
/// </summary>
/// <param name="message">The message to send.</param>
public void Send(byte[] message)
{
// Sanitize
if (message == null)
{
throw new ArgumentNullException("message");
}
// Get the current thread ID
int threadId = Thread.CurrentThread.ManagedThreadId;
int size;
var socketAsyncEventArgs = _socketAsyncEventArgsSendPool.Pop();
if ((size = ProtocolHelper.AppendControlBytesToMessage(message, threadId, socketAsyncEventArgs.Buffer)) > 0)
{
socketAsyncEventArgs.SetBuffer(0, size);
_sendBufferQueue.Enqueue(socketAsyncEventArgs);
}
else
{
_socketAsyncEventArgsSendPool.Push(socketAsyncEventArgs);
}
}
private void ReceiveCallback(Socket socket, SocketAsyncEventArgs socketAsyncEventArgs)
{
// Check for error
if (socketAsyncEventArgs.SocketError != SocketError.Success)
{
(socketAsyncEventArgs.UserToken as PooledMessage)?.Dispose();
HandleCommunicationError(socket, new Exception("Receive failed, error = " + socketAsyncEventArgs.SocketError));
}
// Get the message state
int bytesRead = socketAsyncEventArgs.BytesTransferred;
// Read the data
if (bytesRead > 0)
{
// Add to receive queue
BlockingQueue <SocketAsyncEventArgs> receiveBufferQueue = null;
_currentlyConnectedClientsReceiveQueuesLock.EnterReadLock();
try
{
if (!_currentlyConnectedClientsReceiveQueues.TryGetValue(socket, out receiveBufferQueue))
{
// Peace out!
return;
}
}
finally
{
_currentlyConnectedClientsReceiveQueuesLock.ExitReadLock();
}
receiveBufferQueue.Enqueue(socketAsyncEventArgs);
}
else
{
// 0 bytes means disconnect
(socketAsyncEventArgs.UserToken as PooledMessage)?.Dispose();
HandleCommunicationError(socket, new Exception("Received 0 bytes (graceful disconnect)"));
_socketAsyncEventArgsReceivePool.Push(socketAsyncEventArgs);
return;
}
socketAsyncEventArgs = _socketAsyncEventArgsReceivePool.Pop();
// Post a receive to the socket as the client will be continuously receiving messages to be pushed to the queue
TryUnsafeSocketOperation(socket, SocketAsyncOperation.Receive, socketAsyncEventArgs);
}
