CFSocketSetAddress in AsyncUDPSocket fails with broadcast address about cocoaasyncsocket

[gghose]

I have a correction to make. I don't believe the problem is the address and routing, but rather with the port number being less than 1024. Again though, running as sudo doesn't solve this problem. So I how do I listen to a reserved port? (I am communicating with an external device whose port number is fixed at 1002, so the answer change the port doesn't work!)

[gghose]

sudo isn't "convincing" enough apparently. When I turn on the setuid bit, change ownership to root, relink to a fixed path dynamic framework, and run, then it open up the port.

Yuck. Yuck.

It looks like I'm going to have to delve into BetterAuthorizationSample and somehow integrate it into CocoaAsync. Given that running on such ports is not exactly uncommon (after all every web server does it), has anybody already done this or do I need to reinvent the wheel?

[gghose]

This is a disaster. I've spent days trying to get the BetterAuthorizationSample code to work. It appears to do everything fine, no errors generated creating and binding a privileged UDP port. But when I used the BSD socket created by the privileged tool with a CFSocketCreateWithNative, the socket is not functional: it is always silent. This is not a bug in cocoasync per se, but rather something about the complex nature of BetterAuthorizationSample. I know this because a unprivileged port works without the Helper, but as soon as the Helper is invoked it fails.

Horrible!

[fpillet]

Have you tried signing your application? authorization is complicated as it doubles up with the firewall which itselfs needs to sign your app with proper authorizations.

[gghose]

I didn't, but the example code from Apple doesn't mention anything about code signing. As near as I can tell, it might preclude subsequent authorization requests, but that initial authorization request seems to be accepted, and it still doesn't work.

[github-actions]

This issue has been marked as stale, it will be closed automatically if there is no further activity.