What is the equivalent of 127.255.255.255 for OS/X machines so I can test broadcast udp packets without a network?

Posted by JohnPristine on Server Fault See other posts from Server Fault or by JohnPristine
Published on 2013-11-09T22:01:04Z Indexed on 2013/11/10 3:57 UTC
Read the original article Hit count: 438

Filed under:

networking

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macosx

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udp

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multicast

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broadcast

I am trying to test my program that makes use of broadcast UDP (not multicast!). In Linux, I can use the 127.255.255.255:64651 address and everything works beautifully, in other words, I send a packet to 127.255.255.255:64651 and multiple clients listening on that port get the packet. A real broadcast example!

Unfortunately on my OS/X machine (Mountain Lion) the same example does not work.

Is there any way I can get 127.255.255.255 to work on mac machines? Any other solution to get broadcast working on my mac machine without a network?

Note: It has to be broadcast, not multicast.

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