[{"id":"47bd8463328d83d3","type":"comment","z":"a604108643639054","name":"NTRIP stream stall + recovery watchdog","info":"Emits a message when the NTRIP correction stream stops flowing\nAND when it starts flowing again — nothing else.\n\nHow it works:\n- Every message from the NTRIP Client resets the trigger node's timer.\n- If no message arrives within 60 seconds, the trigger fires; a change\n  node tags it with topic=stall and the state tracker function emits a\n  STALLED notification (once).\n- When data resumes, the state tracker sees the first data frame after\n  the stall and emits a RECOVERED notification (once).\n- While the stream is flowing normally, the state tracker suppresses\n  per-frame messages — you only see transitions.\n\nAdjust the timeout in the trigger node's Duration field.\n","x":260,"y":80,"wires":[]},{"id":"9f622b9ab6a72772","type":"NtripClient","z":"a604108643639054","description":"RTK2Go","passthrough":false,"port":"2101","host":"rtk2go.com","mountpoint":"Foo","interval":1000,"xcoordinate":"","ycoordinate":"","zcoordinate":"","x":140,"y":180,"wires":[["5107785e11b2425a","eb42f2cd60fcdc8f","1a2b3c4d5e6f7089"]]},{"id":"5107785e11b2425a","type":"debug","z":"a604108643639054","name":"data (each frame)","active":false,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":430,"y":140,"wires":[]},{"id":"eb42f2cd60fcdc8f","type":"trigger","z":"a604108643639054","name":"60s stall watchdog","op1":"","op2":"stall","op1type":"nul","op2type":"str","duration":"60","extend":true,"overrideDelay":false,"units":"s","reset":"","bytopic":"all","topic":"topic","outputs":1,"x":440,"y":220,"wires":[["ab12cd34ef567890"]]},{"id":"ab12cd34ef567890","type":"change","z":"a604108643639054","name":"topic=stall","rules":[{"t":"set","p":"topic","pt":"msg","to":"stall","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":640,"y":220,"wires":[["1a2b3c4d5e6f7089"]]},{"id":"1a2b3c4d5e6f7089","type":"function","z":"a604108643639054","name":"state tracker","func":"if (msg.topic === 'stall') {\n    context.set('stalled', true);\n    msg.payload = 'STALLED — no data for 60 s';\n    return msg;\n}\n\n// Data frame from NtripClient — check whether we just recovered.\nif (context.get('stalled')) {\n    context.set('stalled', false);\n    msg.payload = 'RECOVERED — NTRIP stream is flowing again';\n    return msg;\n}\n\n// Stream is fine; no transition to report.\nreturn null;\n","outputs":1,"timeout":0,"noerr":0,"initialize":"","finalize":"","libs":[],"x":840,"y":260,"wires":[["25f028d01cad6b57"]]},{"id":"25f028d01cad6b57","type":"debug","z":"a604108643639054","name":"STATUS","active":true,"tosidebar":true,"console":false,"tostatus":true,"complete":"payload","targetType":"msg","statusVal":"payload","statusType":"auto","x":1020,"y":260,"wires":[]}]