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Add value-less OSC query messages - #151

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iibaranov-IG:fix/150-osc-query-messages
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iibaranov-IG:fix/150-osc-query-messages

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@iibaranov-IG iibaranov-IG commented Sep 11, 2026

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Closes #150.

XAir and X32 mixers answer state queries sent as an OSC path with an empty type tag. MIDIMonster previously required every configured output to carry at least one value, so those requests could not be expressed.

This adds a query output format. A mapped input event triggers the message, while its value is omitted from the OSC packet:

/ch/01/mix/fader = query

The change also includes documentation and a runnable configuration example. I validated the real OSC backend and core in an offline Linux container: the first and later triggers both emitted the exact value-less packet, and an ordinary float route retained its existing wire format. All three integration checks pass.

The reproducible case, pinned source revision, repair patch, and evidence workflow are public in broadcast-control-lab#12. A physical XAir/X32 check is still welcome.

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how to send OSC without value?

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