Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

BSD 2.11 - man page for listen (bsd section 2)

LISTEN(2)							System Calls Manual							 LISTEN(2)

NAME
listen - listen for connections on a socket
SYNOPSIS
listen(s, backlog) int s, backlog;
DESCRIPTION
To accept connections, a socket is first created with socket(2), a willingness to accept incoming connections and a queue limit for incom- ing connections are specified with listen(2), and then the connections are accepted with accept(2). The listen call applies only to sock- ets of type SOCK_STREAM or SOCK_SEQPACKET. The backlog parameter defines the maximum length the queue of pending connections may grow to. 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.
RETURN VALUE
A 0 return value indicates success; -1 indicates an error.
ERRORS
The call fails if: [EBADF] The argument s is not a valid descriptor. [ENOTSOCK] The argument s is not a socket. [EOPNOTSUPP] The socket is not of a type that supports the operation listen.
SEE ALSO
accept(2), connect(2), socket(2)
BUGS
The backlog is currently limited (silently) to 5. 4.2 Berkeley Distribution May 14, 1986 LISTEN(2)
All times are GMT -4. The time now is 11:27 PM.

Unix & Linux Forums Content Copyright 1993-2018. All Rights Reserved.