Prevent command write from blocking in the absence of a reader

Author: bradkeifer

music_assistant/helpers/named_pipe.py

@@ -55,7 +55,9 @@ async def write(self, data: bytes, log_slow_writes: bool = True) -> None:
         start_time = time.time()
 
         def _write() -> None:
-            with open(self._pipe_path, "wb", buffering=0) as pipe_file:
+            # use mode r+b to open read/write, which prevents writes from blocking
+            # in the absence of a reader at the time of write
+            with open(self._pipe_path, "r+b", buffering=0) as pipe_file:
                 pipe_file.write(data)
 
         # Run blocking write in thread pool