BSD Sockets Interface Programmer's Guide

Chapter 3 61

Advanced Topics for Stream Sockets

Socket Options

The operation of sockets is controlled by socket level options. The

following options are supported for internet stream sockets:

• SO_REUSEADDR

• SO_KEEPALIVE

• SO_DONTROUTE

• SO_SNDBUF

• SO_RCVBUF

• SO_LINGER

• SO_USELOOPBACK

• SO_OOBINLINE

• SO_SNDLOWAT

• SO_RCVLOWAT

• SO_SNDTIMEO

• SO_RCVTIMEO

• SO_TYPE

• SO_ERROR

• SO_BROADCAST

• SO_REUSEPORT

All of these options may be used on either AF_INET or AF_UNIX

sockets; the following, however, are really INET speciﬁc in their function

and will not change UNIX socket behavior.

• SO_KEEPALIVE

• SO_REUSEADDR

• SO_DONTROUTE

• SO_USELOOPBACK

• SO_OOBINLINE