1.1.27.9 listen

C

int listen(int fd, int backlog)

Listen for connections on a socket.


Parameters	Description
fd	Socket file descriptor.
backlog	Maximum number of pending connections.


errno	Description
EADDRINUSE	The referred to by `fd` is not bound to a local port.
EBADF	The argument `fd` is not a valid file descriptor.
ENOTSOCK	The file descriptor `fd` does not refer to a socket.
EOPNOTSUPP	The socket is not of a type that supports the listen() operation.
EAGAIN	The socket is nonblocking, and the listening cannot be completed immediately.