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The GNU C Library

16.12 Socket Options

This section describes how to read or set various options that modify the behavior of sockets and their underlying communications protocols.

When you are manipulating a socket option, you must specify which level the option pertains to. This describes whether the option applies to the socket interface, or to a lower-level communications protocol interface.

16.12.1 Socket Option Functions		The basic functions for setting and getting socket options.
16.12.2 Socket-Level Options		Details of the options at the socket level.