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.
A Socket instance created with socket_create or socket_accept.
If the given socket is of type AF_INET or AF_INET6, socket_getpeername will return the peers (remote) IP address in appropriate 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 will return the Unix filesystem path (e.g. /var/run/daemon.sock) in the address parameter.
If given, this will hold the port associated to address.
Returns true on success or false on failure. socket_getpeername 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.
socket_getpeername should not be used with AF_UNIX sockets created with socket_accept. Only sockets created with socket_connect or a primary server socket following a call to socket_bind will return meaningful values.
For having socket_getpeername to return a meaningful value, the socket it is applied upon must of course be one for which the concept of "peer" makes sense.
|8.0.0||socket is a Socket instance now; previously, it was a resource.|