PHP: Hypertext Preprocessor (original) (raw)

socket_listen

(PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8)

socket_listen — Listens for a connection on a socket

Parameters

socket

A Socket instance created with socket_create() or socket_addrinfo_bind()

backlog

A maximum of backlog incoming connections will be queued for processing. If a connection request arrives with the queue full the client may receive an error with an indication ofECONNREFUSED, or, if the underlying protocol supports retransmission, the request may be ignored so that retries may succeed.

Note:

The maximum number passed to the backlog parameter highly depends on the underlying platform. On Linux, it is silently truncated to [SOMAXCONN](sockets.constants.php#constant.somaxconn). On win32, if passed [SOMAXCONN](sockets.constants.php#constant.somaxconn), 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.

Changelog

See Also

• 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
• socket_addrinfo_bind() - Create and bind to a socket from a given addrinfo

Found A Problem?

renmengyang567 at gmail dot com ¶

6 years ago

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