Forum OpenACS Development: NaviServer: net::ERR_CONTENT_DECODING

1: NaviServer: net::ERR_CONTENT_DECODING_FAILED 200

Posted by Frank Bergmann on 02/19/20 05:35 PM

Hi (Gustaf...)!

I get this error reproducibly on ]project-open[ 5.0.3.0.0 on page: server:/intranet/admin/backup/index after pressing "New Backup" (-> /intranet/admin/backup/pg_admin) and returning from that pg_admin, IF I have enabled compression in the config.tcl file:

ns_param        compressenable  on

Disabling compression fixes the issue.

We are at the process of releasing ]po[ 5.0.3, so we found the issue. However, the installer will available for download only in a few days.

Do you have any idea at the moment?

Otherwise I'll let you know once the installer is available.

Cheers
Frank

2: Re: NaviServer: net::ERR_CONTENT_DECODING_FAILED 200 (response to 1)

Posted by Gustaf Neumann on 02/19/20 08:12 PM

This is not an OpenACS topic, but either NaviServer or PO.

I have never seem such a message before. By googling around, it seems that this this error is quite common on windows systems with various servers [1,2] (nothing special about NaviServer). Do you get this error as well on non-windows machines? Do you see this message on the server or on the client side? What is your browser? Is there a place, where i can see, what this page does? What version of NaviServer are you using?

The configuration option of the config file just provides a default value, which can be changed per request with ns_conn [3]. No need to turn it off in general, one can do this per page. So, an easy "fix" would be to avoid compression just for this page.

-gn

[1] https://appuals.com/how-to-fix-err_content_decoding_failed-error/
[2] https://stackoverflow.com/questions/15112104/how-to-fix-err-content-decoding-failed-when-dynamic-compressing
[3] https://naviserver.sourceforge.io/n/naviserver/files/ns_conn.html#10

3: Re: NaviServer: net::ERR_CONTENT_DECODING_FAILED 200 (response to 1)

Posted by Maurizio Martignano on 02/20/20 08:09 AM

Dear Frank,
I hope this information can help you. I used the following configuration:

]project-open[ Version: 5.0.2.4.0
OS Platform: Windows
OS Version: 10.0
TCL Version: 8.6.9
Web Server Version: 4.99 (my latest distribution)
PostgreSQL Version: 12.1
bzip2 Version: 1.0.2
bunzip2 Version:1.0.1
gzip/gunzip Version: 1.2.4

In the config:

ns_param        compressenable  on

The result of "ns_conn acceptedcompression" is "gzip". Given I'm using PgSql version 12.1, I had to modify in the file "pg_dump.tcl" the regular expression checking the database version and remove the option "-i" which is not supported any longer. But, apart from these minor changes, everything seems to be working fine (I tested all the buttons/commands in the backup page).
Again, I hope it helps.

4: Re: NaviServer: net::ERR_CONTENT_DECODING_FAILED 200 (response to 1)

Posted by Frank Bergmann on 02/20/20 01:44 PM

Thanks for the replies.

The issue appears on a CentOS 7 Linux machine, so it's definitely not (only) related to Windows.

As a workaround I have turned compression off. That should be - kind of - OK for a while.

I'll let you know as soon as we've published a Virtual Machine or updated a demo server.

Thanks!
Frank

Forum OpenACS Development: NaviServer: net::ERR_CONTENT_DECODING_FAILED 200