Impossible to handle server errors like 'EADDRINUSE' without 'domain' #164
Description
Hi,
In sock.js https://github.com/tj/axon/blob/master/lib/sockets/sock.js#L368 , the 'error' event of this.server is not handled then it's not possible to handle the EADDRINUSE error for example (when binding on a non-free port).
I'm doing ugly thing with domain like this:
this._host = host;
this._port = parseInt (port);
/* Create domain in order to catch port binding errors. */
const domain = require ('domain').create ();
domain.on ('error', err => {
this._log.warn (
'bus binding on %s:%d, error: %s',
this._host,
this._port,
err.message
);
if (err.code === 'EADDRINUSE') {
this._port++;
this._log.warn (`address in use, retrying on port ${this._port}`);
setTimeout (() => {
this._bind (callback);
}, 0);
return;
}
this._log.err ('this exception is fatal, we cannot continue...');
process.exit (1);
});
/* Try binding in domain. */
domain.run (() => {
this._bind (callback);
});
_bindis usingaxon.socket (mode).bind ()
The 'error' server event should be exposed by the public API.
Regards