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Bug with WebGL compressed builds

Discussion in 'WebGL' started by Steven_Damian, Mar 11, 2021.

  1. Steven_Damian

    Steven_Damian

    Joined:
    Mar 1, 2021
    Posts:
    65
    So here is the summary of my 2 weeks investigation with cloud engineers and others with serving compressed WebGL unity builds:
    1) In version 2019 the compressed builds(gzip&brotli) can be served without any problem (in computers).
    2) In version 2020 the compressed builds can not be served with error ( Uncaught ReferenceError:unityFramework is not defined at HTMLScriptElement.r.onload ).
    3) In version 2021 the compressed builds can not be served with error (Header with Content-Encoding: (gzip or br) is missing)

    Even after trying to tackle the errors with changes in the configuration files and adding .htaccess files, i haven't managed to solve them. Please feel free to say solutions/thoughts! Thank you.
    upload_2021-3-11_22-10-50.png

    22.png
     
    Steven_Damian, Mar 11, 2021
    #1

  2. elZach

    elZach

    Joined:
    Apr 23, 2017
    Posts:
    48
    I noticed this in 2020 versions and stopped compressing webGL builds, as I figured the host (itch.io) would run a compression on the file.

    This error message reads like it's on the hosts end - but if you tried the same compression with 2019 and it worked than that's weird.
     
    elZach, Mar 12, 2021
    #2

  3. Steven_Damian

    Steven_Damian

    Joined:
    Mar 1, 2021
    Posts:
    65
    Hello eIZach ! Exactly! So i use aws servers to host the builds. I've tried both apache/nginx without any luck. I am sure unity engineers are aware of this issue. It's indeed weird.
     
    Steven_Damian, Mar 12, 2021
    #3

  4. Jimangel

    Jimangel

    Joined:
    Nov 29, 2015
    Posts:
    4
    Jimangel, Mar 12, 2021
    #4

  5. Steven_Damian

    Steven_Damian

    Joined:
    Mar 1, 2021
    Posts:
    65
    Solved for 2020 and 2021 by allowing .htaccess files.
     
    Steven_Damian, Mar 14, 2021
    #5
    corbinyo likes this.

  6. Bradley400

    Bradley400

    Joined:
    Nov 6, 2019
    Posts:
    2
    Can you offer more info about this solution? Do you allow .htaccess files on the server or in Unity settings?
     
    Bradley400, Mar 29, 2021
    #6
    Bentoon likes this.

  7. corbinyo

    corbinyo

    Joined:
    Aug 23, 2017
    Posts:
    26
    @Steven_Damian Yes, can you please elaborate on what "allowing .htaccess files." means, thank you!
     
    corbinyo, Apr 1, 2021
    #7

  8. Till_LeFx

    Till_LeFx

    Joined:
    Dec 1, 2016
    Posts:
    9
    Hey there. I discovered the error as well, with Unity 2020.3.2f1 (LTS).

    Of course, a workaround may be disabling compression, but unfortunately that inflates the build badly.

    For now, I found a solution here, which works for me with Brotli-Compression enabled.
    https://answers.unity.com/questions/1804378/webgl-builds-in-version-202021f1-are-not-working.html

    UPDATE:
    According to Unity's documentation "WebGL: Compressed builds and server configuration" it's a recommended solution to enable decompression fallback "...if you have less experience with server configuration, or if server configuration is unavailable to you...Note: Using this option results in a larger loader size and a less efficient loading scheme for the build files."

    https://docs.unity3d.com/2020.3/Documentation/Manual/webgl-deploying.html
     

    Attached Files:

    Last edited: Apr 7, 2021
    Till_LeFx, Apr 7, 2021
    #8