uncaught exception: unknown compression method

Just trying out the new 5.3 version of WebGL and think we have everything configured right on the server, .jsgz, .memgz, .datagz mime types all setup and compression enabled (IIS server setup)
But when loading the files I get this error

Any ideas on what would cause that and how to fix it?

Get the same error in Chrome, Firefox and Edge

Get the same error too with compression turned off for the server, which I thought would at least force Unity to use it's own decompression code...

 

Same issue here. Any help would be appreciated.

I've made builds that work (and continue to work) with Unity 5.2.3. Unity 5.3 builds, however, only work locally. Running them from the webserver does not. I am running Apache 2.4.16.

 

Double post because I solved the problem:

Lots of fiddling and restarting Apache until it finally started working. Monark, I would suggest restarting your server a few times and ensuring that the conf files are correct. Though I had set the MIME types correctly, my webserver wouldn't pick up the changes until the last restart I did.

For anyone else with an Apache issue...

If your server is configured to allow .htaccess in the directories around your Unity WebGL build simply create/add to your .htaccess the following lines (not csharp ;P)

Code (csharp):

1. AddType application/octet-stream .memgz .datagz .unity3dgz
2. AddType application/javascript .jsgz

If you'd rather not create an .htaccess file or your Apache isn't configured to use them, you can always set the MIME types globally. The process seems a bit more involved but it's not too bad.

First, let's find your httpd location. With Apache running
$ ps -ef | grep apache
You should see a path like "/usr/sbin/httpd"
Then, let's find your root http location:
$ /usr/sbin/httpd -V | grep HTTPD_ROOT
And then finally the conf file itself:
$ /usr/sbin/httpd -V | grep SERVER_CONFIG_FILE

Find the right spot to add the lines I showed above. Finally, restart Apache. Maybe a couple of times. I had to do it quite a few times.

Thanks to Lareieli for pointing out the correct types! http://forum.unity3d.com/threads/webgl-not-working.307800/#post-2419319

 

Hmmm still doesn't work.
I'm getting a 404 error on this file

TemplateCompressed/UnityProgress.jsgz

Which indeed does not exist, though the uncompressed one does
TemplateData/UnityProgress.js

There appears to be nothing even trying to load the gz one only the .js one
<script src="TemplateData/UnityProgress.js"></script>

all very weird...

 

I should add our server is IIS not Apache

 

Some progress following this thread


http://forum.unity3d.com/threads/so...rve-out-the-new-webgl-stack-files-how.284080/


But still getting an error on UnityLoader.js which it insists on loading as UnityLoader.jsgz

 

hmmm and round in circles, getting that to load by moving it just means that I get errors back on the original gz files again.

 

It's loading! hurrah. Needed to move the data files from Release to Compressed for some reason...

 

Ah! the Web.config from that other thread redirects them into a Compressed folder... mystery all solved, eveything working.

 

What was the solution exactly?

 

Yeah I'm having the same issue. I've tried everything that everyone tried and am having no luck.

 

BobsledTM I'm getting Incorrect Header what is your issue?

 

Same... uncaught exception: incorrect header check
I've been trying to change the .htaccess file like everyone else is saying, but it doesn't seem to help. I'm still getting the warning in the console "Decompressed Release/Flockers.datagz in 187ms. You can remove this delay if you configure your web server to host files using gzip compression." But my server is using gzip compression (I checked using some websites that do that kind of check/ godaddy says gzip compression is on by default)... So I'm real stumped now.

 

Not only that I had this running on my web host before on 5.2. Also when I built the web app with Data Cache on I'd get the error. Now I cleared cached and disabled it and it just stops responding!

Now I'm allocating more memory and uploading again to give that a try.

Not sure what is going on.

Think I just got it working in FireFox. Chrome still stops responding thought. Maybe I need to allocate more memory.

So again if you can try, disable Data Cache and allocate more memory.

 

So I just did some gross stuff and got something working. I continued to clear the cache like you said, then I modified the html file where it says dataUrl, codeUrl, and memUrl by adding a gz to the end of all of the paths. After that I deleted the .htaccess. I'm assuming what I just did was get it working by not using gz compression. I don't think this is a legit solution, but I suppose this is what I'm going to have to get this working in the meantime.

 

Ok, now it's not working. No idea what's going on.

 

I think I'd keep the .htaccess.

You had no luck just disabling the data cache? Try other browsers as well.

Like for some odd reason it won't run on my chrome AT ALL! no matter what. But it ran on my friends computer, in chrome/firefox and it runs on my firefox and it ran on chrome in my mac.

 

Ok, so it wasn't working because I needed to clear out my local cache as well. So frustrating. But yeah, I just removed the htaccess file and then it worked. Unity added auto gzunzipping in case your server wasn't set up to do so, but something was breaking when my server WAS set up to do so. So... yeah, I'll just keep the htaccess file out until I hear of a better solution/the problem gets fixed.

 

Oh I didn't know that! So it will unzip with out the .htaccess! I'll have to try!

Also I hope cache clearing isn't required for every user >_<

Did you remove ever .htaccess file including the ones in the sub folders or just the root?
Because it isn't loading for me after removing them all. Are there any extra steps?

EDIT, nvm seems to have loaded, although the progress bar wasn't updating!

Also did you keep data cache enabled when building?

 

Yeah Unity does an auto-unzip but that's what causes the progress bar to act strange and freeze.

I didn't remove the htaccess from the higher levels, just at the release level.

As for data caching, I'm using GoDaddy managed wordpress as my host so I don't have the ability to turn caching off, I can only clear the cache. I tried fiddling with the .htaccess at the higher level to turn caching off for the specific page, but I had no luck as it still seems to be caching.

 

I think caching is perhaps native to the browser. You might have to mess with chrome settings to prevent a site from saving on your computer. Still I'm glad you figured it out. I removed all .htaccess but its good to know its just the one under release that counts.

Thanks for sharing the quick fix!

 

thank you, zmobchomper, made my day!

 

I got the same exception (uncaught exception: unknown compression method) and tried zmobchomper's solution, adding the two lines in the conf file. I can't use the .htaccess since it seems not enabled in Amazon EC2 Apache server. Somehow it got fixed in Firefox but the exception is still present in Chrome. Do I also have to include the contents of .htaccess file created in the WebGL build to the server's conf file? I tried it but it doesn't seem to work, unless I have to restart the server a few times again.

 

Just leave it here - workes for me perfectly (in .htaccess in Release folder):

PHP:

Options +FollowSymLinks
RewriteEngine on
RewriteBase /WebFolderName/      // <- the name of folder you choose when buil webgl project!
RewriteCond %{HTTP:Accept-encoding} gzip
RewriteCond %{REQUEST_FILENAME}gz -f
RewriteRule ^(.*)\.js$ $1\.jsgz [L]

RewriteCond %{HTTP:Accept-encoding} gzip
RewriteCond %{REQUEST_FILENAME}gz -f
RewriteRule ^(.*)\.data$ $1\.datagz [L]

RewriteCond %{HTTP:Accept-encoding} gzip
RewriteCond %{REQUEST_FILENAME}gz -f
RewriteRule ^(.*)\.mem$ $1\.memgz [L]

RewriteCond %{HTTP:Accept-encoding} gzip
RewriteCond %{REQUEST_FILENAME}gz -f
RewriteRule ^(.*)\.unity3d$ $1\.unity3dgz [L]

AddEncoding gzip .jsgz
AddEncoding gzip .datagz
AddEncoding gzip .memgz
AddEncoding gzip .unity3dgz


 

I just moved the .htaccess to /var/www/html and it seems to be working now. Guess I just have to sleep over it to find a solution.

 

The RewriteBase fix worked for me. Thanks

 

I am running into the exact same issue(s).
Placing the htaccess file next to the index.html file and implementing the RewriteBase fix makes everything work for me.

However, I can't really accept that this is the way we should setup our projects. This is a workaround.
Why doesn't it work with the structure and setup Unity creates on building the project?

 

Can you please give a short step-by-step instructions? I also use GoDaddy Managed Wordpress and can't make WebGL builds to work since 5.3. What is your final .htaccess and in which folder is it?

 

That worked perfectly, thank you!

 

hi, i'm running unity 5.3.2 and have generated/uploaded a very simple webGL build to an amazon ec2 instance and i keep getting the "unknown compression method" error. i've tried editing the httpd.conf file and restarting apache, editing the .htaccess file, moving it up to the parent folder and deleting it from the release folder, etc. but nothing has worked so far. any help would be greatly appreciated.

 

I get the same error and my webhoster does not support gzip (no kidding). How can I upload WebGL content there? Can I somehow deactivate the whole compression magic? I have another project produced with Unity 5.0 or 5.1 and there I have both a release and a compressed folder and that project works nicely. In the 5.4 output I only have a release folder with compressed artifacts. These work locally but not from my hoster.

 

sounds like the same problem as me.. any luck?

 

Same here. Unity 5.3.2. Not working. Tried everything that was described in this post.

 

I got the same problem with Unity 5.3.2p3 in the beginning.

But then I found a way around the .htaccess.

I left the .htaccess in the release folder, commented everything out, like the following....

Options +FollowSymLinks
#RewriteEngine on

#RewriteCond %{HTTP:Accept-encoding} gzip
#RewriteCond %{REQUEST_FILENAME}gz -f
#RewriteRule ^(.*)\.js$ $1\.jsgz [L]
....

and made a direct reference to the compressed files in the index.html

var Module = {
TOTAL_MEMORY: 536870912,
errorhandler: null,
compatibilitycheck: null,
dataUrl: "Release/20160222_1.datagz",
codeUrl: "Release/20160222_1.jsgz",
memUrl: "Release/20160222_1.memgz",
};

Now, it's working. Hope it helps!

 

Hi Alex,
I tried this and it worked... almost.
The game starts and everything, but when I try to use PlayerPrefs it does not work unless I put back in the .htaccess with the RewriteBase modification.

 

Thanks a lot! That did the trick.

 

Stefanie Nobel : Thanks a lot! That did the trick.

 

A quick and dirty method to make it work is to uncompress the files ending in "gz"

 

Tried @Stefanie Nobel's idea, without any luck.

I commented out all the Rewrite* lines from htaccess, and tried it with and without the AddEncoding stuff at the end commented. I modified index.html to point directly at the *.*gz files, instead of the base js/data/mem files. Regardless of what I try, I get the following error:

Invoking error handler due to
Uncaught SyntaxError: Unexpected token ILLEGAL

For those that got it working, was there anything else you did?

 

All I did, was add the 'gz' to the end of the files there in bold, I made no other changes anywhere.
This worked for me. Im on a fairly common shared webhost running linux. I have a 'regular ole webpage' hosting account, so not a lot of high level control. This fix works fine.

 

@alexsuvorov ,
Hi i uploaded the webgl build to amazon AWS without any changes and it works perfectly with public link but when i use the same for facebook canvas app. facebook throws following error.

MethodNotAllowedThe specified method is not allowed against this resource.POSTOBJECTC11D5873673B92CB2rI7cyfbeq6NmlToUxIhz2QUtcz1NFby0ZFyUW+5oF3Z18CP6JbaCpnrHYF4TWWzArCT9v9Hf+w=

What does this mean ?
Tried removing the .htaccess file but no luck.

 

Hi,
I get mentioned error before the canvas loads. In facts Facebook iFrame shows only that error. Sorry removed the directory and link is broke. Did you get this working in any facebook game that is hosted in Amazon AWS.

 

Hi,
Sharing you one webgl game hosted on AWS S3. Link works fine when you use it outside facebook but does not work wtih facebook.. Sent you the link in private conversation

 

Hello,
In my case I have everything working on my server. I build with Unity 5.3.3 and it works fine.
I delivered the same build to my client, he has the exception "Unkown compression methode".
I thought it was because his server is not configured to handle the compression. So I deleted the configuration on my local server in order to have Unity handling the compression as my client. It works fine for me and I juste have the console log : "Decompressed WebGL.js in 305ms. You can remove this delay if you configure your web server to host files using gzip compression." That log my client didn't have it.
So my questions are :
- What is the methode of compression that is unknown?
- Why we have the same prject and it is decompressed on UnityLoader.js on both sides and it work just on my side.

Thanks for reply.

I also see on request that my client get the three gzip files : Project.jsgz + Project.memgz + Project.datagz. Just like me.

Also, we delivered to my client the same project build on Unity 5.2 and it worked for him. Juste the build on Unity 5.3.3 that does'nt work.

I just did some tests and get with the information that when I GET project.jsgz from my client, that file is deziped but it has the extension (gz), same for project.memgz and project.datagz.
So I guess it's a problem with my client's server that it give a deziped file withgz extension from a ziped file build by unity 5.3.3.

 

Great! This works!!!!! (Unity 5.5.1f1)

Thank you