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De L.1's avatar
De L.1
Collaborator | Level 9
3 years ago
Solved

Downloading part of a file via /get_temporary_link with Range header returns incorrect content-type

When downloading a specific part of a file using the link received via a /get_temporary_link call and the HTTP header Range: bytes=..., the content-type application/grpc is sent instead of the actual content-type of the file.

 

Request Headers:

 

GET https://uc383828c22b...3d5ecbc28.dl.dropboxusercontent.com/cd/0/get/B61A....17HuE3Lr3UI4EEpPY/file
range:bytes=0-

 


Expected Response Headers:

 

HTTP/1.1 206 Partial Content
---
accept-ranges:bytes
Content-Length:26397831
Content-Range:bytes 0-26397830/26397831
content-type:video/mp4

 

 

Actual Response Headers:

 

HTTP/1.1 206 Partial Content
---
accept-ranges:bytes
Content-Length:26397831
Content-Range:bytes 0-26397830/26397831
content-type:application/grpc

 

 

So in this example (actually downloading the full file, but with the Range header), the video file is downloaded with a content-type of application/grpc rather than video/mp4.

 

This causes problems when (for example) you want to display a video file in an HTML 5 player using the link received from the /get_temporary_link call.  The HTML 5 player buffers the video file and loads the data in chunks. However, due to the incorrect content type, the browser will not accept the data as video content and will not be able to play it.

I've just noticed this problem, and I didn't have any problems with it before. So I think this problem has been introduced recently?

  • This should be fixed now. Please let us know if you're still seeing any issues.

29 Replies

Replies have been turned off for this discussion
  • Greg-DB's avatar
    Greg-DB
    Icon for Dropbox Community Moderator rankDropbox Community Moderator
    3 years ago

    rylincoln Thanks for the note. I wasn't able to reproduce that exact behavior, but depending on how your device/browser was trying to play the video, it may have been automatically sending 'Range'. In any case, I'm glad to hear you're seeing it working again. We have begun to roll out a fix. Please note it will take some to fully deploy it.

  • TaiT's avatar
    TaiT
    New member | Level 2
    3 years ago
    It already works for me. Thank you very much Dropbox team

    For future API updates, don't forget to make Rclone compatible. We are a great community.

    I know that third-party applications are not a priority. But I wouldn't like to leave this team after 4 years with you.

    A hug
  • WoisWoi's avatar
    WoisWoi
    New member | Level 2
    3 years ago

    Same for me (possibly with degraded performance) and I totally agree with you 🙂

  • Pyker's avatar
    Pyker
    New member | Level 2
    3 years ago

    It works for me sometimes, I presume that it's still rolling out.

  • star_fox's avatar
    star_fox
    New member | Level 2
    3 years ago

    i still get errors

     

    2023/04/25 20:49:03 ERROR : MOVIE.mkv: ReadFileHandle.Read error: low level retry 5/10: failed to authenticate decrypted block - bad password?
    2023/04/25 20:49:05 ERROR : IO error: not an encrypted file - bad magic string
    2023/04/25 20:49:07 ERROR : IO error: not an encrypted file - bad magic string
    2023/04/25 20:49:08 ERROR : IO error: not an encrypted file - bad magic string
    2023/04/25 20:49:08 ERROR : IO error: not an encrypted file - bad magic string
    2023/04/25 20:49:10 Unsolicited response received on idle HTTP channel starting with "m\x12 RCLONE\x00\x00\xe8*Z\x9eT\x1cG\xd4\xf8[\x96e\x9e\xdd\xef\x145\x97\xb9\xa0H\xf2\xe6J"; err=<nil>
    2023/04/25 20:49:10 ERROR : MOVIE.mkv: ReadFileHandle.Read error: low level retry 1/10: not an encrypted file - bad magic string
    2023/04/25 20:49:12 ERROR : IO error: not an encrypted file - bad magic string
    2023/04/25 20:49:13 ERROR : IO error: not an encrypted file - bad magic string
    2023/04/25 20:49:15 ERROR : IO error: not an encrypted file - bad magic string
    2023/04/25 20:49:16 ERROR : IO error: not an encrypted file - bad magic string
    2023/04/25 20:49:17 ERROR : IO error: not an encrypted file - bad magic string

  • Greg-DB's avatar
    Greg-DB
    Icon for Dropbox Community Moderator rankDropbox Community Moderator
    3 years ago

    The fix is rolling out and is not out fully everywhere yet.

  • star_fox's avatar
    star_fox
    New member | Level 2
    3 years ago

    now i get no errors anymore

     

    thanks!

  • Greg-DB's avatar
    Greg-DB
    Icon for Dropbox Community Moderator rankDropbox Community Moderator
    3 years ago

    This should be fixed now. Please let us know if you're still seeing any issues.

  • Pyker's avatar
    Pyker
    New member | Level 2
    3 years ago

    Thank you! It's working great now.

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