app/node_main.py

@@ -186,12 +186,16 @@ async def mqtt_lifecycle_manager():
     async def metadata_watcher():
         """
         Polls OP25 HTTP terminal for metadata and publishes events to MQTT.
+        Corrected to use the POST-based command API found in the HAR capture.
         """
         last_tgid = 0
         last_metadata = {}
         potential_end_time = None
         DEBOUNCE_SECONDS = 2.5
-        OP25_DATA_URL = "http://127.0.0.1:8081/data.json"
+        OP25_DATA_URL = "http://127.0.0.1:8081/"
+        
+        # This is the specific payload the OP25 web interface uses [cite: 45562, 45563]
+        COMMAND_PAYLOAD = [{"command": "update", "arg1": 0, "arg2": 0}]
 
         while True:
             if not MQTT_CONNECTED:
@@ -199,9 +203,12 @@ async def mqtt_lifecycle_manager():
                 continue
 
             try:
-                # Run blocking request in executor to avoid blocking the asyncio loop
+                # Run blocking POST request in executor 
                 loop = asyncio.get_running_loop()
-                response = await loop.run_in_executor(None, lambda: requests.get(OP25_DATA_URL, timeout=0.5))
+                response = await loop.run_in_executor(
+                    None, 
+                    lambda: requests.post(OP25_DATA_URL, json=COMMAND_PAYLOAD, timeout=0.5)
+                )
                 
                 if response.status_code == 200:
                     data = response.json()
@@ -209,10 +216,17 @@ async def mqtt_lifecycle_manager():
                     current_tgid = 0
                     current_meta = {}
 
-                    # Handle multi_rx list or single dict structure
+                    # The response is an array of update objects 
-                    if isinstance(data, list):
+                    for item in data:
-                        for ch in data:
+                        if item.get("json_type") == "channel_update":
-                            t = ch.get("tgid", 0)
+                            # The terminal provides channel info keyed by channel index (e.g., "0") 
+                            # We look for the first channel that has an active TGID
+                            for key in item:
+                                if key.isdigit():
+                                    ch = item[key]
+                                    t = ch.get("tgid")
+                                    
+                                    # OP25 returns null or 0 when no talkgroup is active 
                                     if t and int(t) > 0:
                                         current_tgid = int(t)
                                         current_meta = {
@@ -222,29 +236,19 @@ async def mqtt_lifecycle_manager():
                                             "sysname": str(ch.get("system", "")).strip()
                                         }
                                         break
-                    elif isinstance(data, dict):
+                            if current_tgid: break
-                        t = data.get("tgid", 0)
-                        if t and int(t) > 0:
-                            current_tgid = int(t)
-                            current_meta = {
-                                "tgid": str(t),
-                                "alpha_tag": str(data.get("tag", "")).strip(),
-                                "frequency": str(data.get("freq", 0)),
-                                "sysname": str(data.get("system", "")).strip()
-                            }
 
                     now = datetime.now()
 
+                    # Logic for handling call start/end events
                     if current_tgid != 0:
-                        potential_end_time = None # Reset debounce
+                        potential_end_time = None 
                         
                         if current_tgid != last_tgid:
                             if last_tgid != 0:
-                                # End previous call immediately if switching channels
                                 payload = {"node_id": NODE_ID, "timestamp": now.isoformat(), "event": "call_end", "metadata": last_metadata}
                                 client.publish(f"nodes/{NODE_ID}/metadata", json.dumps(payload), qos=0)
                             
-                            # Start new call
                             payload = {"node_id": NODE_ID, "timestamp": now.isoformat(), "event": "call_start", "metadata": current_meta}
                             client.publish(f"nodes/{NODE_ID}/metadata", json.dumps(payload), qos=0)
                             last_tgid = current_tgid

docker-compose.yml

@@ -7,6 +7,7 @@ services:
     restart: unless-stopped
     ports:
       - 8001:8001
+      - 8081:8081
     devices:
       - "/dev/bus/usb:/dev/bus/usb"
     volumes: