fix(cot): switch emitter to TCP for OpenTAK Server compatibility#112
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OpenTAK Server does not accept UDP CoT — only TCP on its streaming port (OTS_TCP_STREAMING_PORT, default 8088). The emitter was sending UDP unicast which arrived at the host but was never received by OTS. - CotEmitter now connects via TCP when COT_TAKSERVER_HOST is set, with the same reconnect/backoff logic as CotReceiver - Falls back to UDP multicast when no server host is configured (LAN mode) - Extracts _msg_to_cot() helper shared by both TCP and UDP paths - Adds VERTEX- UID filter in CotReceiver to drop echoed-back CoT and prevent feedback loops when OTS broadcasts to all connected clients Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01PswxT6xcRYioF1ZfgszgRi
…/PORT Both emitter and receiver connect to the same TAK server endpoint, so COT_RECEIVE_HOST and COT_RECEIVE_PORT were redundant. The receiver now uses COT_TAKSERVER_HOST and COT_TAKSERVER_PORT, and COT_RECEIVE_ENABLED remains as the simple boolean gate for the receive direction. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01PswxT6xcRYioF1ZfgszgRi
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Summary
OTS_TCP_STREAMING_PORT, default 8088). The emitter was sending UDP unicast which arrived at the host but was silently dropped.CotEmitternow connects via TCP whenCOT_TAKSERVER_HOSTis set, with the same reconnect/backoff logic asCotReceiver.VERTEX-UID filter inCotReceiverto drop CoT echoed back by OTS, preventing entity feedback loops.Config change required
In
.env, update the emitter port to match the OTS TCP streaming port:Then rebuild:
docker compose build poller && docker compose up -d pollerTest plan
docker compose logs -f poller | grep "\[cot\]"showsTCP connected to TAK servertak_clientghost entities for its own aircraft🤖 Generated with Claude Code
https://claude.ai/code/session_01PswxT6xcRYioF1ZfgszgRi
Generated by Claude Code