Is there an equivalent to TCP_CORK in Winsock?

Question

In many UNIX TCP implementations, a socket option TCP_CORK is provided which allows the caller to bypass Nagle\'s algorithm and explicitly specify when to send a physical pa

Answer 1

FWIW I successfully use TCP_NODELAY to get TCP_CORK-style behavior. I do it like this:

1. unset the TCP_NODELAY flag on the socket
2. Call send() zero or more times to add your outgoing data into the Nagle-queue
3. set the TCP_NODELAY flag on the socket
4. call send() with the number-of-bytes argument set to zero, to force an immediate send of the Nagle-queued data

That works fine for me under Windows, MacOS/X, and Linux. (Note that under Linux the final zero-byte send() isn't necessary)