[BUG] ValueError: invalid literal for int() with base 10 and Max retries exceeded with url

[BluDood]

Describe the bug
While loading a song to then download it, I seem to randomly get an error saying this:
ValueError: invalid literal for int() with base 10: 'Expires=1697802182~FullPath~hmac=Ne8qK1vrknzKhgnDJvCTLDydUxDCxW9'
I also seem to get this other error, but thats a lot more rare:
(Caused by SSLError(CertificateError("hostname 'audio4-gm-fb.spotifycdn.com' doesn't match 'audio-gm-off.spotifycdn.com'")))

To Reproduce
Steps to reproduce the behavior:

1. Log in to librespot and create a session
2. Start a new stream using session.content_feeder(), for example

stream = session.content_feeder().load(
    TrackId.from_base62(some_track_id),
    VorbisOnlyAudioQuality(AudioQuality.HIGH),
    False,
    None
)

3. Run it a couple times until you see the errors

Expected behavior
The stream should start, and get the bytes for downloading.

Logs

Traceback (most recent call last):
  File "<path to python install>\Lib\site-packages\urllib3\connectionpool.py", line 714, in urlopen

    httplib_response = self._make_request(
                       ^^^^^^^^^^^^^^^^^^^
  File "<path to python install>\Lib\site-packages\urllib3\connectionpool.py", line 403, in _make_request
    self._validate_conn(conn)
  File "<path to python install>\Lib\site-packages\urllib3\connectionpool.py", line 1053, in _validate_conn
    conn.connect()
  File "<path to python install>\Lib\site-packages\urllib3\connection.py", line 472, in connect

    _match_hostname(cert, self.assert_hostname or server_hostname)
  File "<path to python install>\Lib\site-packages\urllib3\connection.py", line 545, in _match_hostname
    match_hostname(cert, asserted_hostname)
  File "<path to python install>\Lib\site-packages\urllib3\util\ssl_match_hostname.py", line 155, in match_hostname
    raise CertificateError("hostname %r doesn't match %r" % (hostname, dnsnames[0]))
urllib3.util.ssl_match_hostname.CertificateError: hostname 'audio4-gm-fb.spotifycdn.com' doesn't match 'audio-gm-off.spotifycdn.com'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<path to python install>\Lib\site-packages\requests\adapters.py", line 486, in send

    resp = conn.urlopen(
           ^^^^^^^^^^^^^
  File "<path to python install>\Lib\site-packages\urllib3\connectionpool.py", line 798, in urlopen
    retries = retries.increment(
              ^^^^^^^^^^^^^^^^^^
  File "<path to python install>\Lib\site-packages\urllib3\util\retry.py", line 592, in increment
    raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='audio4-gm-fb.spotifycdn.com', port=443): Max retries exceeded with url: /audio/a66b2030f9f938fe7f5cff94b8b68ece7c67bf18?Expires=1697802355~FullPath~hmac=MozbpkqHKIJSsljQLrJZ13Pu6hCPPyXf8G2hKNABucA= (Caused by SSLError(CertificateError("hostname 'audio4-gm-fb.spotifycdn.com' doesn't match 'audio-gm-off.spotifycdn.com'")))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<path to script>", line 203, in <module>

    download_song(args.track_id)
  File "<path to script>", line 157, in download_song
    stream = session.content_feeder().load(TrackId.from_base62(
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<path to python install>\Lib\site-packages\librespot\audio\__init__.py", line 724, in load
    return self.load_track(playable_id, audio_quality_picker, preload,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<path to python install>\Lib\site-packages\librespot\audio\__init__.py", line 785, in load_track

    return self.load_stream(file, track, None, preload, halt_listener)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<path to python install>\Lib\site-packages\librespot\audio\__init__.py", line 739, in load_stream
    return CdnFeedHelper.load_track(self.__session, track, file,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<path to python install>\Lib\site-packages\librespot\audio\__init__.py", line 339, in load_track
    streamer = session.cdn().stream_file(file, key, url, halt_listener)
               ^^^^^^^^^^^^^^^
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<path to python install>\Lib\site-packages\librespot\audio\__init__.py", line 438, in stream_file
    return CdnManager.Streamer(
           ^^^^^^^^^^^^^^^^^^^^
  File "<path to python install>\Lib\site-packages\librespot\audio\__init__.py", line 563, in __init__
    response = self.request(range_start=0,
               ^^^^
^^^^^^^^^^^^^^^^^^^^^^^
  File "<path to python install>\Lib\site-packages\librespot\audio\__init__.py", line 617, in request
    response = self.__session.client().get(
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<path to python install>\Lib\site-packages\requests\sessions.py", line 600, in get
    return self.request("GET", url, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<path to python install>\Lib\site-packages\requests\sessions.py", line 587, in request

    resp = self.send(prep, **send_kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<path to python install>\Lib\site-packages\requests\sessions.py", line 701, in send
    r = adapter.send(request, **kwargs)
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<path to python install>\Lib\site-packages\requests\adapters.py", line 517, in send
    raise SSLError(e, request=request)
requests.exceptions.SSLError: HTTPSConnectionPool(host='audio4-gm-fb.spotifycdn.com', port=443): Max retries exceeded with url: /audio/a66b2030f9f938fe7f5cff94b8b68ece7c67bf18?Expires=1697801653~FullPath~hmac=eoe76lWHbt3CTG6gv1-Qz6k916ROMvg-OFqQhWpLV5s= (Caused by SSLError(CertificateError("hostname 'audio4-gm-fb.spotifycdn.com' doesn't match 'audio-gm-off.spotifycdn.com'")))

Traceback (most recent call last):
  File "<path to script>", line 203, in <module>

    download_song(args.track_id)
  File "<path to script>", line 157, in download_song
    stream = session.content_feeder().load(TrackId.from_base62(
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<path to python install>\Lib\site-packages\librespot\audio\__init__.py", line 722, in load
    return self.load_track(playable_id, audio_quality_picker, preload,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<path to python install>\Lib\site-packages\librespot\audio\__init__.py", line 783, in load_track
    return self.load_stream(file, track, None, preload, halt_listener)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<path to python install>\Lib\site-packages\librespot\audio\__init__.py", line 737, in load_stream

    return CdnFeedHelper.load_track(self.__session, track, file,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<path to python install>\Lib\site-packages\librespot\audio\__init__.py", line 339, in load_track
    streamer = session.cdn().stream_file(file, key, url, halt_listener)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<path to python install>\Lib\site-packages\librespot\audio\__init__.py", line 442, in stream_file
    CdnManager.CdnUrl(self, file.file_id, url),
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<path to python install>\Lib\site-packages\librespot\audio\__init__.py", line 487, in __init__
    self.set_url(url)

  File "<path to python install>\Lib\site-packages\librespot\audio\__init__.py", line 531, in set_url
    self.__expiration = int(token_url.query[:i]) * 1000
                        ^^^^^^^^^^^^^^^^^^^^^^^^
ValueError: invalid literal for int() with base 10: 'Expires=1697802182~FullPath~hmac=Ne8qK1vrknzKhgnDJvCTLDydUxDCxW9'

Client Information (please complete the following information):

• OS: Windows 11
• Python Version 3.11.5
• Library Version 0.0.9

Additional context
It has worked perfecly before, maybe spotify have made some changes?

[BluDood]

Same error occurs on macOS using a Mac Mini M1, however this time it always returns one of the errors

[kokarare1212]

Perhaps the audio CDN URL specification has changed.
I'll look into this in more detail.

[Torfek]

Same problem, it doesn't happen every time. Actually, timestamp is wrong, but who knows why.

[kokarare1212]

f97b6b2
There seems to be a similar problem with librespot-java.
The code was changed based on this pull request.
*The behavior has not been verified yet.

[tagdara]

My follow up comment in the other project still applies - you may still encounter errors when getting a chunk from a server with “audio4” in the name. It’s probably either got a bad cert/missing SAN or it’s a canary for this new format.

[KagChi]

Yeah, the new Expires are working. but we still get missmatch cert.

[wizjany]

For people running into this and finding themselves here, as a local and temporary workaround you can turn off SSL verification (e.g., by inserting client.verify = False here) until the server starts returning the correct certificate. Standard disclaimer that turning off SSL verification is bad etc etc.

[kokarare1212]

Waiting for more information as there is no positive solution at the moment...

[KagChi]

Maybe can we just exclude audio4-gm-fb.spotifycdn.com for time being? the url cant be accessed through browser too (404)

[tagdara]

@KagChi is correct that the only real solution for the time being is to exclude audio4-gm-fb from the pool.

I made the following temporary change to librespot-java that has been working for several hours today. I'm sure someone can supply an equivalent fix over here.

    @NotNull
    private static HttpUrl getUrl(@NotNull Session session, @NotNull StorageResolveResponse resp) {
        String selectedUrl = resp.getCdnurl(session.random().nextInt(resp.getCdnurlCount()));
        while (selectedUrl.contains("audio4-gm-fb")) {
            LOGGER.warn("getUrl picked CDN with known issues {} (forcing re-selection)", selectedUrl );
            selectedUrl = resp.getCdnurl(session.random().nextInt(resp.getCdnurlCount()));
        }
        return HttpUrl.get(selectedUrl);
        // return HttpUrl.get(resp.getCdnurl(session.random().nextInt(resp.getCdnurlCount())));
    }

[kokarare1212]

I'll adopt that idea for now.
2bef6c4

@KagChi is correct that the only real solution for the time being is to exclude audio4-gm-fb from the pool.

I made the following temporary change to librespot-java that has been working for several hours today. I'm sure someone can supply an equivalent fix over here.

    @NotNull
    private static HttpUrl getUrl(@NotNull Session session, @NotNull StorageResolveResponse resp) {
        String selectedUrl = resp.getCdnurl(session.random().nextInt(resp.getCdnurlCount()));
        while (selectedUrl.contains("audio4-gm-fb")) {
            LOGGER.warn("getUrl picked CDN with known issues {} (forcing re-selection)", selectedUrl );
            selectedUrl = resp.getCdnurl(session.random().nextInt(resp.getCdnurlCount()));
        }
        return HttpUrl.get(selectedUrl);
        // return HttpUrl.get(resp.getCdnurl(session.random().nextInt(resp.getCdnurlCount())));
    }

[richteas75]

The same issue happens for me as of today, Mon, Nov. 06, 2023 with the host
audio-gm-fb.spotifycdn.com

Replacing the line
while "audio4-gm-fb" in selected_url:
with
while "audio4-gm-fb" in selected_url or "audio-gm-fb" in selected_url:
helped fix the issue for me today.

Even simply using
while "audio-gm-fb" in selected_url:
worked today