listen           1342 ext/socket/socket.c 	listen(fd, 5);
listen           1704 ext/socket/socket.c     if (server) listen(fd, 5);
listen           2783 ext/socket/socket.c     if (listen(fptr->fd, backlog) < 0)
listen           2487 win32/win32.c  	r = listen(TO_SOCKET(s), backlog);
listen           2905 win32/win32.c  		listen(svr, 5);