adding, example for filter

README.md

@@ -12,4 +12,17 @@ Service which filters and sends out data to all listening clients over websocket
 - **WEBSOCKET_PORT**: mendatory under which port the websocket port runs
 
 
+### Filter 
+
+
+```json
+{
+    "lines": [9, 11],
+    "positions": [],
+    "regions": [0]
+}
+```
+
+This would only let telegrams from line 9 and 11 from region 0 (dresden). This Json 
+just needs to be send to the websocket sending it again will overwrite the previous filter.
 

src/filter.hpp

@@ -1,4 +1,3 @@
-
 #ifndef FUNNEL_FILTER_HPP
 #define FUNNEL_FILTER_HPP
 

test.py

@@ -0,0 +1,22 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i python3.9 -p "python39.withPackages(ps: with ps; [ websockets ])"
+
+import asyncio
+import json
+from websockets import connect
+
+config = {
+    "regions": [0, 1],
+}
+
+raw_config = json.dumps(config);
+
+async def hello(uri):
+    async with connect(uri) as websocket:
+        await websocket.send(raw_config)
+        while True:
+            print(await websocket.recv())
+            #await websocket.pong()
+
+asyncio.run(hello("wss://socket.staging.dvb.solutions"))
+#asyncio.run(hello("ws://127.0.0.1:9001"))