public void OnSendHeaderCallback(IAsyncResult result)
{
WriteAttachment attachment = (WriteAttachment)result.AsyncState;
attachment.NumberOfBytesWrittenSoFar += (ulong)ClientSocket.EndSend(result);
if (attachment.NumberOfBytesWrittenSoFar < (ulong)attachment.WriteHeaderBuffer.LongLength)
{
// We have not finished sending the header, keep sending it
ClientSocket.BeginSend(attachment.WriteHeaderBuffer,
(int)attachment.NumberOfBytesWrittenSoFar,
(int)((ulong)attachment.WriteHeaderBuffer.LongLength -
attachment.NumberOfBytesWrittenSoFar),
SocketFlags.None, OnSendHeaderCallback, attachment);
}
else
{
// The header was sent completely
attachment.IsHeaderSent = true;
attachment.NumberOfBytesWrittenSoFar = 0;
// We have sent the header, begin sending the payload now
ClientSocket.BeginSend(attachment.WritePayloadBuffer,
0,
(int)attachment.ExpectedWritePayloadLength,
SocketFlags.None, OnSendPayloadCallback, attachment);
}
}
private void OnSendPayloadCallback(IAsyncResult asyncResult)
{
WriteAttachment attachment = (WriteAttachment)asyncResult.AsyncState;
attachment.NumberOfBytesWrittenSoFar += (ulong)ClientSocket.EndSend(asyncResult);
if (attachment.NumberOfBytesWrittenSoFar < attachment.ExpectedWritePayloadLength)
{
// Write buffer has not been sent completely
// send the remaining
ClientSocket.BeginSend(attachment.WritePayloadBuffer,
(int)attachment.NumberOfBytesWrittenSoFar,
(int)(attachment.ExpectedWritePayloadLength - attachment.NumberOfBytesWrittenSoFar),
SocketFlags.None, OnSendHeaderCallback, attachment);
}
else
{
OnPacketSent();
}
}