SWI-Prolog -- tcp

Availability::- use_module(library(socket)).(can be autoloaded)

[det]tcp_listen(+SocketId, +BackLog)

Tells, after tcp_bind/2, the socket to listen for incoming requests for connections. Backlog indicates how many pending connection requests are allowed. Pending requests are requests that are not yet acknowledged using tcp_accept/3. If the indicated number is exceeded, the requesting client will be signalled that the service is currently not available. A commonly used default value for Backlog is 5.