fix(lightwave): Split ws msg into 3 parts instead of 4. #2344 (#2345)

py/h2o_lightwave/h2o_lightwave/server.py

@@ -101,7 +101,7 @@ async def _process(self, args: dict):
 
 def _parse_msg(msg: str) -> Optional[dict]:
     # protocol: t addr data
-    parts = msg.split(' ', 3)
+    parts = msg.split(' ', 2)
 
     if len(parts) != 3:
         raise ValueError('Invalid message')