<?php
// create for tcp
$sock = socket_create(AF_INET, SOCK_STREAM, getprotobyname('tcp'));
socket_bind($sock, '127.0.0.1',5000);
socket_listen($sock,1);
sleep(20);
?>
<fruit>
netstat -ntpl
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 127.0.0.1:5000 0.0.0.0:* LISTEN 1839/php
socket_listen
(PHP 4 >= 4.1.0, PHP 5, PHP 7)
socket_listen — Listens for a connection on a socket
설명
bool socket_listen
( resource
$socket
[, int $backlog = 0
] )
After the socket socket has been created
using socket_create() and bound to a name with
socket_bind(), it may be told to listen for incoming
connections on socket.
socket_listen() is applicable only to sockets of
type SOCK_STREAM or
SOCK_SEQPACKET.
인수
-
socket -
A valid socket resource created with socket_create().
-
backlog -
A maximum of
backlogincoming connections will be queued for processing. If a connection request arrives with the queue full the client may receive an error with an indication of ECONNREFUSED, or, if the underlying protocol supports retransmission, the request may be ignored so that retries may succeed.Note:
The maximum number passed to the
backlogparameter highly depends on the underlying platform. On Linux, it is silently truncated toSOMAXCONN. On win32, if passedSOMAXCONN, the underlying service provider responsible for the socket will set the backlog to a maximum reasonable value. There is no standard provision to find out the actual backlog value on this platform.
반환값
성공 시 TRUE를, 실패 시 FALSE를 반환합니다. The error code can be retrieved with
socket_last_error(). This code may be passed to
socket_strerror() to get a textual explanation of the
error.
참고
- socket_accept() - Accepts a connection on a socket
- socket_bind() - Binds a name to a socket
- socket_connect() - Initiates a connection on a socket
- socket_create() - Create a socket (endpoint for communication)
- socket_strerror() - Return a string describing a socket error
add a note
User Contributed Notes 1 note
renmengyang567 at gmail dot com ¶
5 years ago
