// This method closes the read socket and gets rid of our user token associated with it
private void CloseReadSocket(OSUserToken token, SocketAsyncEventArgs readSocket)
{
token.Dispose();
// Decrement the counter keeping track of the total number of clients connected to the server.
Interlocked.Decrement(ref numconnections);
// Put the read socket back in the stack to be used again
socketpool.Push(readSocket);
}
// This method processes the read socket once it has a transaction
private void ProcessReceive(SocketAsyncEventArgs readSocket)
{
// if BytesTransferred is 0, then the remote end closed the connection
if (readSocket.BytesTransferred > 0)
{
//SocketError.Success indicates that the last operation on the underlying socket succeeded
if (readSocket.SocketError == SocketError.Success)
{
OSUserToken token = readSocket.UserToken as OSUserToken;
if (token.ReadSocketData(readSocket))
{
Socket readsocket = token.OwnerSocket;
// If the read socket is empty, we can do something with the data that we accumulated
// from all of the previous read requests on this socket
if (readsocket.Available == 0)
{
token.ProcessData(readSocket);
}
// Start another receive request and immediately check to see if the receive is already complete
// Otherwise OnIOCompleted will get called when the receive is complete
// We are basically calling this same method recursively until there is no more data
// on the read socket
bool IOPending = readsocket.ReceiveAsync(readSocket);
if (!IOPending)
{
ProcessReceive(readSocket);
}
}
else
{
Console.WriteLine(token.LastError);
CloseReadSocket(readSocket);
}
}
else
{
ProcessError(readSocket);
}
}
else
{
CloseReadSocket(readSocket);
}
}
// This method closes the read socket and gets rid of our user token associated with it
private void CloseReadSocket(OSUserToken token, SocketAsyncEventArgs readSocket)
{
token.Dispose();
// Decrement the counter keeping track of the total number of clients connected to the server.
Interlocked.Decrement(ref numconnections);
// Put the read socket back in the stack to be used again
socketpool.Push(readSocket);
}
// This overload of the close method doesn't require a token
private void CloseReadSocket(SocketAsyncEventArgs readSocket)
{
OSUserToken token = readSocket.UserToken as OSUserToken;
CloseReadSocket(token, readSocket);
}