POSIX_SOCKETS feature provides a TCP/IP stack through POSIX-compatible socket system calls. For general information on this feature, see intro(2POSIX) and the POSIX draft standard P1003.1g. However,
POSIX_SOCKETS only provides support of the
AF_INET domain. The
AF_LOCAL domain support is provided by the
For more details, see POSIX_SOCKETS(5FEA).