Does setting TCP_NODELAY affect the behaviour of both ends of the socket?

问题

I've always assumed that Nagle's algorithm affected the socket in both directions, and that setting TCP_NODELAY somehow informed the remote end also to switch off Nagle.

Is that right, or does setting TCP_NODELAY only affect the behaviour of the end that calls it?

回答1:

TCP_NODELAY affect sending TCP segments only on the host that sets this option on its socket. That is, the peer's sending algorithm is not affected.

来源：https://stackoverflow.com/questions/8226512/does-setting-tcp-nodelay-affect-the-behaviour-of-both-ends-of-the-socket