Manual page for LISTEN(2)
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 incoming connections are specified with
listen.2
and then the connections are
accepted with
accept.2
The
listen
call applies only to sockets 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.
Created by unroff & hp-tools.
© somebody (See intro for details). All Rights Reserved.
Last modified 11/5/97
