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Good day

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I faced a strange issue with UDP listener between 3 and 4 series processor.

I need to listen mDNS stream for a specific address (in my case 192.xxx.xxx.036).

I made a test program on RMC4 - everything works perfectly.?

In case of using 224.0.0.251:5353, as UDP IP, I get all mDNS stream,

when I put 192.xxx.036, I receive an mDNS records just from the device i need.

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BUT !!! When upload this program to CP3N (or RMC3) the situation becomes the following:

when using 224.0.0.251 - I'm still getting full stream from all mDNS devices in my net,

But when I put any definite IP instead of 224... nothing comes.

Actually I tried two CPs (RMC3 and RMC4) with the same program in two debugger windows. ?

When using 224.0.0.251 the behavior is similar

But, when changing the address to 192.xxx.xxx, RMC4 still works perfectly, RMC3 has no RX traffic at all.

Tried both SIMPL and SIMPL+ modules

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Meanwhile, There is a way ?to get the result on 3er, but only filtering the RX in SIMPL+ module with IF ... SenderIPAddress = Param IP e.t.c..?

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Thanks

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Maybe try removing mDNS from the equation and just see if manually sending UDP messages (using a pair of test programs) works as you expect between 3-series and 4-series?

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Doesn't sound like it's this, but make sure there's not a module (like your S+) that's set to compile only for 4-series.

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Josh Winn
The LiquidPixel Group