AF_UNIX versus AF

AF_UNIX versus AF_INET

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LEARN ABOUT PHP

socket_getpeername

SOCKET_GETPEERNAME(3)							 1						     SOCKET_GETPEERNAME(3)

socket_getpeername  -  Queries the remote side of the given socket which may either result in host/port or in a Unix filesystem path, dependent on
its type

SYNOPSIS

       bool socket_getpeername (resource  $socket, string  &$address, [int  &$port])

DESCRIPTION

	Queries the remote side of the given socket which may either result in host/port or in a Unix filesystem path, dependent on its type.

PARAMETERS

	      o $socket
		- A valid socket resource created with socket_create(3) or socket_accept(3).

	      o $address
		- If the given socket is of type AF_INET or AF_INET6, socket_getpeername(3) will return the peers (remote) IP address in appropri-
		ate  notation  (e.g.   127.0.0.1  or  fe80::1) in the $address parameter and, if the optional $port parameter is present, also the
		associated port.  If the given socket is of type AF_UNIX,  socket_getpeername(3)  will	return	the  Unix  filesystem  path  (e.g.
		/var/run/daemon.sock) in the $address parameter.

	      o $port
		- If given, this will hold the port associated to $address.

RETURN VALUES

	Returns  TRUE  on  success  or	FALSE  on  failure.  socket_getpeername(3) may also return FALSE if the socket type is not any of AF_INET,
       AF_INET6, or AF_UNIX, in which case the last socket error code is not updated.

NOTES

       Note

	      socket_getpeername(3) should not be used with AF_UNIX sockets created with socket_accept(3). Only sockets created  with  socket_con-
	      nect(3) or a primary server socket following a call to socket_bind(3) will return meaningful values.

       Note

	       For  having  socket_getpeername(3)  to return a meaningful value, the socket it is applied upon must of course be one for which the
	      concept of "peer" makes sense.

SEE ALSO

       socket_getsockname(3), socket_last_error(3), socket_strerror(3).

PHP Documentation Group 												     SOCKET_GETPEERNAME(3)

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