Module stream_cache 

StreamCache — tracks one active voice stream per module.

Voice headers must be periodically rebroadcast so clients who joined mid-stream (or missed the initial header) can still decode the audio. The reflector stores one StreamCache per module currently carrying a stream, and consults it on each incoming frame to decide:

• whether to rebroadcast the cached header (every 21 frames, matching the xlxd cadence in cdplusprotocol.cpp:318);
• whether the stream has gone silent and should be evicted.

Structs

StreamCache

Cached state for one active voice stream on one module.