/// <summary>
/// This private method is the callback for the receive attempts.
/// </summary>
private void BytesReceived(IAsyncResult arg)
{
int byteCount;
try
{
byteCount = socket.EndReceive(arg);
}
catch (Exception ex)
{
ReceiveRequest request = receiveQueue.Dequeue();
ThreadPool.QueueUserWorkItem((WaitCallback)(x => request.ReceiveBack((string)null, ex, request.Payload)));
HandleReceiveQueue();
incomingLine = "";
return;
}
if (byteCount == 0)
{
linesReceivedQueue.Enqueue((string)null);
HandleReceiveQueue();
}
else
{
incomingLine = incomingLine + new string(incomingChars, 0,
encoding.GetDecoder().GetChars(incomingBytes, 0, byteCount, incomingChars, 0, false));
int startIndex;
int num;
for (startIndex = 0; (num = incomingLine.IndexOf('\n', startIndex)) >= 0; startIndex = num + 1)
{
linesReceivedQueue.Enqueue(incomingLine.Substring(startIndex, num - startIndex));
}
incomingLine = incomingLine.Substring(startIndex);
HandleReceiveQueue();
}
}
/// <summary>
/// This helper method fulfils the requests (from queue) with the current
/// available text and if more request are remaining to be handled,
/// asks for more text via the socket.
/// </summary>
private void HandleReceiveQueue()
{
lock (receiveQueue)
{
while (receiveQueue.Count <ReceiveRequest>() > 0)
{
if (linesReceivedQueue.Count > 0)
{
string line = linesReceivedQueue.Dequeue();
ReceiveRequest request = receiveQueue.Dequeue();
ThreadPool.QueueUserWorkItem((WaitCallback)(x => request.ReceiveBack(line,
(Exception)null, request.Payload)));
}
else
{
break;
}
}
while (receiveQueue.Count > 0)
{
try
{
socket.BeginReceive(incomingBytes, 0, incomingBytes.Length, SocketFlags.None,
new AsyncCallback(BytesReceived), (object)null);
break;
}
catch (Exception ex)
{
ReceiveRequest request = receiveQueue.Dequeue();
ThreadPool.QueueUserWorkItem((WaitCallback)(x => request.ReceiveBack((string)null, ex, request.Payload)));
incomingLine = "";
}
}
}
}