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Mopidy as a streaming target

See original GitHub issue

I know mopidy is not a supported target, but I’d like to understand what could be the issue, here. To be clear, this is about streaming to mopidy, not supporting the library side.

The key error on mopidy seems to be

ERROR    2022-06-18 14:09:26,433 [1:Core-10] mopidy.core.playback
  StreamBackend backend caused an exception.
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/dist-packages/urllib3/response.py", line 697, in _update_chunk_length
    self.chunk_left = int(line, 16)
ValueError: invalid literal for int() with base 16: b''

Is MASS using a special protocol that has to be understood by mopidy?

Full HA log

2022-06-18 14:09:25 INFO (MainThread) [music_assistant.players.stream] Start Streaming queue track: database://track/1520 (Agnes Obel - The Curse) for queue Mopidy Uranus
2022-06-18 14:09:26 ERROR (MainThread) [aiohttp.server] Error handling request
Traceback (most recent call last):
  File "/usr/local/lib/python3.9/site-packages/aiohttp/web_protocol.py", line 435, in _handle_request
    resp = await request_handler(request)
  File "/usr/local/lib/python3.9/site-packages/aiohttp/web_app.py", line 504, in _handle
    resp = await handler(request)
  File "/usr/local/lib/python3.9/site-packages/music_assistant/controllers/streams.py", line 167, in serve_queue_stream
    await queue_stream.subscribe(client_id, resp.write)
  File "/usr/local/lib/python3.9/site-packages/music_assistant/controllers/streams.py", line 317, in subscribe
    assert not self.done.is_set(), "Stream task is already finished"
AssertionError: Stream task is already finished
2022-06-18 14:09:26 ERROR (MainThread) [aiohttp.server] Error handling request
Traceback (most recent call last):
  File "/usr/local/lib/python3.9/site-packages/aiohttp/web_protocol.py", line 435, in _handle_request
    resp = await request_handler(request)
  File "/usr/local/lib/python3.9/site-packages/aiohttp/web_app.py", line 504, in _handle
    resp = await handler(request)
  File "/usr/local/lib/python3.9/site-packages/music_assistant/controllers/streams.py", line 167, in serve_queue_stream
    await queue_stream.subscribe(client_id, resp.write)
  File "/usr/local/lib/python3.9/site-packages/music_assistant/controllers/streams.py", line 317, in subscribe
    assert not self.done.is_set(), "Stream task is already finished"
AssertionError: Stream task is already finished
2022-06-18 14:09:27 ERROR (MainThread) [aiohttp.server] Error handling request
Traceback (most recent call last):
  File "/usr/local/lib/python3.9/site-packages/aiohttp/web_protocol.py", line 435, in _handle_request
    resp = await request_handler(request)
  File "/usr/local/lib/python3.9/site-packages/aiohttp/web_app.py", line 504, in _handle
    resp = await handler(request)
  File "/usr/local/lib/python3.9/site-packages/music_assistant/controllers/streams.py", line 167, in serve_queue_stream
    await queue_stream.subscribe(client_id, resp.write)
  File "/usr/local/lib/python3.9/site-packages/music_assistant/controllers/streams.py", line 317, in subscribe
    assert not self.done.is_set(), "Stream task is already finished"
AssertionError: Stream task is already finished
2022-06-18 14:09:27 ERROR (MainThread) [aiohttp.server] Error handling request
Traceback (most recent call last):
  File "/usr/local/lib/python3.9/site-packages/aiohttp/web_protocol.py", line 435, in _handle_request
    resp = await request_handler(request)
  File "/usr/local/lib/python3.9/site-packages/aiohttp/web_app.py", line 504, in _handle
    resp = await handler(request)
  File "/usr/local/lib/python3.9/site-packages/music_assistant/controllers/streams.py", line 167, in serve_queue_stream
    await queue_stream.subscribe(client_id, resp.write)
  File "/usr/local/lib/python3.9/site-packages/music_assistant/controllers/streams.py", line 317, in subscribe
    assert not self.done.is_set(), "Stream task is already finished"
AssertionError: Stream task is already finished
2022-06-18 14:09:27 ERROR (MainThread) [aiohttp.server] Error handling request
Traceback (most recent call last):
  File "/usr/local/lib/python3.9/site-packages/aiohttp/web_protocol.py", line 435, in _handle_request
    resp = await request_handler(request)
  File "/usr/local/lib/python3.9/site-packages/aiohttp/web_app.py", line 504, in _handle
    resp = await handler(request)
  File "/usr/local/lib/python3.9/site-packages/music_assistant/controllers/streams.py", line 167, in serve_queue_stream
    await queue_stream.subscribe(client_id, resp.write)
  File "/usr/local/lib/python3.9/site-packages/music_assistant/controllers/streams.py", line 317, in subscribe
    assert not self.done.is_set(), "Stream task is already finished"
AssertionError: Stream task is already finished
2022-06-18 14:09:27 ERROR (MainThread) [aiohttp.server] Error handling request
Traceback (most recent call last):
  File "/usr/local/lib/python3.9/site-packages/aiohttp/web_protocol.py", line 435, in _handle_request
    resp = await request_handler(request)
  File "/usr/local/lib/python3.9/site-packages/aiohttp/web_app.py", line 504, in _handle
    resp = await handler(request)
  File "/usr/local/lib/python3.9/site-packages/music_assistant/controllers/streams.py", line 167, in serve_queue_stream
    await queue_stream.subscribe(client_id, resp.write)
  File "/usr/local/lib/python3.9/site-packages/music_assistant/controllers/streams.py", line 317, in subscribe
    assert not self.done.is_set(), "Stream task is already finished"
AssertionError: Stream task is already finished

Full mopidy log

ERROR    2022-06-18 14:09:26,433 [1:Core-10] mopidy.core.playback
  StreamBackend backend caused an exception.
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/dist-packages/urllib3/response.py", line 697, in _update_chunk_length
    self.chunk_left = int(line, 16)
ValueError: invalid literal for int() with base 16: b''

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.8/dist-packages/urllib3/response.py", line 438, in _error_catcher
    yield
  File "/usr/local/lib/python3.8/dist-packages/urllib3/response.py", line 764, in read_chunked
    self._update_chunk_length()
  File "/usr/local/lib/python3.8/dist-packages/urllib3/response.py", line 701, in _update_chunk_length
    raise InvalidChunkLength(self, line)
urllib3.exceptions.InvalidChunkLength: InvalidChunkLength(got length b'', 0 bytes read)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/requests/models.py", line 750, in generate
    for chunk in self.raw.stream(chunk_size, decode_content=True):
  File "/usr/local/lib/python3.8/dist-packages/urllib3/response.py", line 572, in stream
    for line in self.read_chunked(amt, decode_content=decode_content):
  File "/usr/local/lib/python3.8/dist-packages/urllib3/response.py", line 793, in read_chunked
    self._original_response.close()
  File "/usr/lib/python3.8/contextlib.py", line 131, in __exit__
    self.gen.throw(type, value, traceback)
  File "/usr/local/lib/python3.8/dist-packages/urllib3/response.py", line 455, in _error_catcher
    raise ProtocolError("Connection broken: %r" % e, e)
urllib3.exceptions.ProtocolError: ("Connection broken: InvalidChunkLength(got length b'', 0 bytes read)", InvalidChunkLength(got length b'', 0 bytes read))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/mopidy/core/playback.py", line 350, in _change
    if not backend.playback.change_track(pending_tl_track.track).get():
  File "/usr/lib/python3/dist-packages/pykka/_threading.py", line 45, in get
    _compat.reraise(*self._data['exc_info'])
  File "/usr/lib/python3/dist-packages/pykka/_compat/__init__.py", line 29, in reraise
    raise value
  File "/usr/lib/python3/dist-packages/pykka/_actor.py", line 193, in _actor_loop
    response = self._handle_receive(envelope.message)
  File "/usr/lib/python3/dist-packages/pykka/_actor.py", line 299, in _handle_receive
    return callee(*message.args, **message.kwargs)
  File "/usr/lib/python3/dist-packages/mopidy/backend.py", line 313, in change_track
    uri = self.translate_uri(track.uri)
  File "/usr/lib/python3/dist-packages/mopidy/stream/actor.py", line 93, in translate_uri
    unwrapped_uri, _ = _unwrap_stream(
  File "/usr/lib/python3/dist-packages/mopidy/stream/actor.py", line 163, in _unwrap_stream
    content = http.download(
  File "/usr/lib/python3/dist-packages/mopidy/internal/http.py", line 42, in download
    for chunk in response.iter_content(chunk_size):
  File "/usr/lib/python3/dist-packages/requests/models.py", line 753, in generate
    raise ChunkedEncodingError(e)
requests.exceptions.ChunkedEncodingError: ("Connection broken: InvalidChunkLength(got length b'', 0 bytes read)", InvalidChunkLength(got length b'', 0 bytes read))
WARNING  2022-06-18 14:09:26,454 [1:Core-10] mopidy.core.tracklist
  Track is not playable: http://192.168.3.252:8095/374d38f3a092465897d9da4b945b6ca1.flac
ERROR    2022-06-18 14:09:27,422 [1:Core-10] mopidy.core.library
  StreamBackend backend caused an exception.
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/dist-packages/urllib3/response.py", line 697, in _update_chunk_length
    self.chunk_left = int(line, 16)
ValueError: invalid literal for int() with base 16: b''

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.8/dist-packages/urllib3/response.py", line 438, in _error_catcher
    yield
  File "/usr/local/lib/python3.8/dist-packages/urllib3/response.py", line 764, in read_chunked
    self._update_chunk_length()
  File "/usr/local/lib/python3.8/dist-packages/urllib3/response.py", line 701, in _update_chunk_length
    raise InvalidChunkLength(self, line)
urllib3.exceptions.InvalidChunkLength: InvalidChunkLength(got length b'', 0 bytes read)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/requests/models.py", line 750, in generate
    for chunk in self.raw.stream(chunk_size, decode_content=True):
  File "/usr/local/lib/python3.8/dist-packages/urllib3/response.py", line 572, in stream
    for line in self.read_chunked(amt, decode_content=decode_content):
  File "/usr/local/lib/python3.8/dist-packages/urllib3/response.py", line 793, in read_chunked
    self._original_response.close()
  File "/usr/lib/python3.8/contextlib.py", line 131, in __exit__
    self.gen.throw(type, value, traceback)
  File "/usr/local/lib/python3.8/dist-packages/urllib3/response.py", line 455, in _error_catcher
    raise ProtocolError("Connection broken: %r" % e, e)
urllib3.exceptions.ProtocolError: ("Connection broken: InvalidChunkLength(got length b'', 0 bytes read)", InvalidChunkLength(got length b'', 0 bytes read))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/mopidy/core/library.py", line 17, in _backend_error_handling
    yield
  File "/usr/lib/python3/dist-packages/mopidy/core/library.py", line 217, in lookup
    result = future.get()
  File "/usr/lib/python3/dist-packages/pykka/_threading.py", line 45, in get
    _compat.reraise(*self._data['exc_info'])
  File "/usr/lib/python3/dist-packages/pykka/_compat/__init__.py", line 29, in reraise
    raise value
  File "/usr/lib/python3/dist-packages/pykka/_actor.py", line 193, in _actor_loop
    response = self._handle_receive(envelope.message)
  File "/usr/lib/python3/dist-packages/pykka/_actor.py", line 299, in _handle_receive
    return callee(*message.args, **message.kwargs)
  File "/usr/lib/python3/dist-packages/mopidy/stream/actor.py", line 66, in lookup
    _, scan_result = _unwrap_stream(
  File "/usr/lib/python3/dist-packages/mopidy/stream/actor.py", line 163, in _unwrap_stream
    content = http.download(
  File "/usr/lib/python3/dist-packages/mopidy/internal/http.py", line 42, in download
    for chunk in response.iter_content(chunk_size):
  File "/usr/lib/python3/dist-packages/requests/models.py", line 753, in generate
    raise ChunkedEncodingError(e)
requests.exceptions.ChunkedEncodingError: ("Connection broken: InvalidChunkLength(got length b'', 0 bytes read)", InvalidChunkLength(got length b'', 0 bytes read))
ERROR    2022-06-18 14:09:27,554 [1:Core-10] mopidy.core.library
  StreamBackend backend caused an exception.
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/dist-packages/urllib3/response.py", line 697, in _update_chunk_length
    self.chunk_left = int(line, 16)
ValueError: invalid literal for int() with base 16: b''

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.8/dist-packages/urllib3/response.py", line 438, in _error_catcher
    yield
  File "/usr/local/lib/python3.8/dist-packages/urllib3/response.py", line 764, in read_chunked
    self._update_chunk_length()
  File "/usr/local/lib/python3.8/dist-packages/urllib3/response.py", line 701, in _update_chunk_length
    raise InvalidChunkLength(self, line)
urllib3.exceptions.InvalidChunkLength: InvalidChunkLength(got length b'', 0 bytes read)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/requests/models.py", line 750, in generate
    for chunk in self.raw.stream(chunk_size, decode_content=True):
  File "/usr/local/lib/python3.8/dist-packages/urllib3/response.py", line 572, in stream
    for line in self.read_chunked(amt, decode_content=decode_content):
  File "/usr/local/lib/python3.8/dist-packages/urllib3/response.py", line 793, in read_chunked
    self._original_response.close()
  File "/usr/lib/python3.8/contextlib.py", line 131, in __exit__
    self.gen.throw(type, value, traceback)
  File "/usr/local/lib/python3.8/dist-packages/urllib3/response.py", line 455, in _error_catcher
    raise ProtocolError("Connection broken: %r" % e, e)
urllib3.exceptions.ProtocolError: ("Connection broken: InvalidChunkLength(got length b'', 0 bytes read)", InvalidChunkLength(got length b'', 0 bytes read))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/mopidy/core/library.py", line 17, in _backend_error_handling
    yield
  File "/usr/lib/python3/dist-packages/mopidy/core/library.py", line 217, in lookup
    result = future.get()
  File "/usr/lib/python3/dist-packages/pykka/_threading.py", line 45, in get
    _compat.reraise(*self._data['exc_info'])
  File "/usr/lib/python3/dist-packages/pykka/_compat/__init__.py", line 29, in reraise
    raise value
  File "/usr/lib/python3/dist-packages/pykka/_actor.py", line 193, in _actor_loop
    response = self._handle_receive(envelope.message)
  File "/usr/lib/python3/dist-packages/pykka/_actor.py", line 299, in _handle_receive
    return callee(*message.args, **message.kwargs)
  File "/usr/lib/python3/dist-packages/mopidy/stream/actor.py", line 66, in lookup
    _, scan_result = _unwrap_stream(
  File "/usr/lib/python3/dist-packages/mopidy/stream/actor.py", line 163, in _unwrap_stream
    content = http.download(
  File "/usr/lib/python3/dist-packages/mopidy/internal/http.py", line 42, in download
    for chunk in response.iter_content(chunk_size):
  File "/usr/lib/python3/dist-packages/requests/models.py", line 753, in generate
    raise ChunkedEncodingError(e)
requests.exceptions.ChunkedEncodingError: ("Connection broken: InvalidChunkLength(got length b'', 0 bytes read)", InvalidChunkLength(got length b'', 0 bytes read))