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