I’m struggling to receive udp multicast messages in a program I’ve written, when compiled for mac. I’m sure it used to work, so I’m wondering if this is a recent change in Mac OS Sequoia. The code works fine on a PC and even in windows running from Parallels on the same mac.
When I run the code in OSX, I can see the join request to the multicast has happened as all the packets show up in Wireshark and stop when I quit the app. However the app never receives any data. The app is listed in the Security and Privacy page under the Local Network permissions page.
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