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Comment by jandrese

3 years ago

This seems like it should be very simple to fix without having to do much to the API. Just implement a flush() function for TCP sockets that tells the stack to kick the current buffer out to the wire immediately. It seems so obvious that I think I must be missing something. Why didn't this appear in the 80s?

3 comments

jandrese

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erik_seaberg  3 years ago

It’s not portable but Linux has a TCP_CORK socket option that does this.

  • olvy0  3 years ago

    Here's how to emulate TCP_CORK using TCP_NODELAY, from [0]:

    - unset the TCP_NODELAY flag on the socket

    - Call send() zero or more times to add your outgoing data into the Nagle-queue

    - set the TCP_NODELAY flag on the socket

    - call send() with the number-of-bytes argument set to zero, to force an immediate send of the Nagle-queued data

    [0] https://stackoverflow.com/a/22118709