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. boolsocket_getpeername resourcesocket string&addr int&port &warn.experimental.func; 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. 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. &return.success; 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. See also socket_getsockname, socket_last_error and socket_strerror.