jcoffey-dev
b6f943a77c
When a listener couldn't bind its address (a port below 1024 without root, a port already in use, or the legacy-protocols switch putting a listener back after privileges were dropped), the bind error was reported but the socket was still passed to listen(). The kernel then bound it itself, to a random port on every interface, and the server logged the listener as started on the port it was configured with. listen() now refuses a socket that isn't bound, so the listener is reported with a listen error and skipped, and nothing opens anywhere unexpected.