socket_getpeername
(PHP 4 >= 4.1.0, PHP 5)
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
说明
$socket
, string &$address
[, int &$port
] )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.
参数
-
socket -
A valid socket resource created with socket_create() or socket_accept() .
-
address -
If the given socket is of type
AF_INETorAF_INET6, socket_getpeername() will return the peers (remote) IP address in appropriate notation (e.g. 127.0.0.1 or fe80::1) in theaddressparameter and, if the optionalportparameter 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 theaddressparameter. -
port -
If given, this will hold the port associated to
address.
返回值
成功时返回 TRUE ， 或者在失败时返回 FALSE 。 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.
注释
Note:
socket_getpeername() should not be used with
AF_UNIXsockets 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.
Note:
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.
参见
- socket_getsockname() - Queries the local side of the given socket which may either result in host/port or in a Unix filesystem path, dependent on its type
- socket_last_error() - Returns the last error on the socket
- socket_strerror() - Return a string describing a socket error
用户评论:
[#1] redph0enix at hotmail dot com [2003-09-09 20:57:18]
socket_getpeername will not work for UDP sockets. Instead, use socket_recvfrom - it provides the IP address and port of the source server - eg:
$size=socket_recvfrom($socket,$input,65535,0,$ipaddress,$port);
echo "Received [$input] ($size bytes) from IP $ipaddress Port $port\n";