private IAsyncResult StartInternalRead(Socket streamSocket, SocketStreamAsyncArgs readArgs, byte[] buffer, int offset, int size, AsyncCallback callback, object state)
{
IAsyncResult asyncResult;
try
{
SocketStream.IoReq ioReq = new SocketStream.IoReq(state, callback);
ioReq.RecordUserBuffer(buffer, offset, size);
ioReq.InternalBuffer = readArgs.InternalBuffer;
readArgs.SetBuffer(ioReq.InternalBuffer.Buffer, 0, size);
readArgs.UserToken = ioReq;
SocketStream.Tracer.TraceDebug((long)this.GetHashCode(), "ReceiveAsync called");
if (!streamSocket.ReceiveAsync(readArgs))
{
SocketStream.Tracer.TraceDebug((long)this.GetHashCode(), "ReceiveAsync sync completion");
this.IO_Completed(null, readArgs);
}
asyncResult = ioReq.AsyncResult;
}
catch (Exception ex)
{
if (ex is ThreadAbortException || ex is StackOverflowException || ex is OutOfMemoryException)
{
throw;
}
throw new IOException(ex.Message, ex);
}
return(asyncResult);
}
private void BindArgsForUse(SimpleBuffer buf, SocketStreamAsyncArgs args)
{
args.InternalBuffer = buf;
args.CompletionRtn = new EventHandler <SocketAsyncEventArgs>(this.IO_Completed);
args.Completed += args.CompletionRtn;
args.SetBuffer(buf.Buffer, 0, buf.Buffer.Length);
}