: What does the Chrome error code (6) in "appcache fetch failed" indicate? I am developing a website that uses the html cache manifest (AppCache). I often see the following line in Chrome's console:
I am developing a website that uses the html cache manifest (AppCache). I often see the following line in Chrome's console:
Application Cache Error event: Manifest fetch failed (6) 192.168.0.102/static/index.appcache
Apparently the error code in parentheses is meant to be the HTTP status code, or -1 if the browser is offline. But my server is not returning 6 as status code. So what does this code indicate?
Chrome's behavior regarding this error is very odd. If I force it to re-download the website by removing the appcache client-side (via chrome://appcache-internals), this error often still occurs, but this time not preventing but interrupting an already running download; the second refresh then works fine.
The problem occurs regardless of whether there is a new version of the cache manifest or not, and this makes it hard to update Chrome's appcache. The problem does not occur in IE 11.
I'm using TLS with a self-signed certificate for this development stage. The HTTP response headers for the appcache manifest are
HTTP/1.1 200 OK
Accept-Ranges: bytes
Cache-Control: no-cache, must-revalidate
Content-Encoding: gzip
Content-Type: text/cache-manifest; charset=utf-8
Expires: -1
Last-Modified: Fri, 11 Apr 2014 07:49:30 GMT
Pragma: no-cache
Vary: Accept-Encoding
Date: Fri, 11 Apr 2014 07:51:38 GMT
Content-Length: 480
More posts by @Rambettina238
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Looking into Chrome source code, those numbers 6, 9 or similar are order numbers of enum. In case of 6, this is NETWORK_ERROR, in case of 9 it is SECURITY_ERROR.
Here is source showing that if given error is SERVER_ERROR it will put response code, but if it isn't SERVER_ERROR it will map its error to enum value, and this enum is defined here and the codes are:
UPDATE_OK (0)
DB_ERROR (1)
DISKCACHE_ERROR (2)
QUOTA_ERROR (3)
REDIRECT_ERROR (4)
MANIFEST_ERROR (5)
NETWORK_ERROR (6)
SERVER_ERROR (7)
CANCELLED_ERROR (8)
SECURITY_ERROR (9)
NUM_UPDATE_JOB_RESULT_TYPES (10)
To be honest I saw only 4 when server was sending 302, 9 when certificate is wrong, and 6 but here I still don't understand whole problem.
If you still get this problem, make sure...
You don't have switched on "Google Chrome can run in background" option
Go to $sysdrive$Users$youraccount$AppDataLocalGoogleChromeUser DataDefaultApplication Cache -> delete files and folders
I had exactly the same issue when using Application Cache on Chrome v38.0.2125.111 m.
Tried several different manifest configs but in the end I simply closed Chrome and reopened it again. Hey presto, issue was gone and cache was working fine!
Hope this helps someone!
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