Google Appengine Static files Failed to load resource: net::ERR_CONTENT_DECODING_FAILED

2
votes

In our application hosted on GAE (Java), I am intermittently getting the ERR_CONTENT_DECODING_FAILED error, for a few static files (css, json, etc). The Network tab in the browser usually shows 0 Bytes for the file for which the decoding failed.

It is more predominant in HTTPS mode, and very few times in the http mode. The Logging section of app engine console doesn't provide much information. It does log the requests for the static file accesses, but nothing more than that. The logging shows different numbers for each requests, and 0 bytes on a lot of requests.

Is there something that we are doing wrong with respect to static files + https?

A 2015-11-27 13:00:15.841 204 752 B 1 ms /manifest.json 182.73.224.148 - - [26/Nov/2015:23:30:15 -0800] "GET /manifest.json HTTP/1.1" 204 752 - "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.86 Safari/537.36" "www.-----.com" ms=1 cpu_ms=0 cpm_usd=8.4041999999999993e-05 instance=- app_engine_release=1.9.30 trace_id=735f1b4f40f2c5ee37dbf8978877e829

A 2015-11-27 13:00:45.094 204 466 B 1 ms /manifest.json 10.35.9.140 - - [26/Nov/2015:23:30:45 -0800] "GET /manifest.json HTTP/1.0" 204 466 - "-" "www.-----.com" ms=1 cpu_ms=0 cpm_usd=5.2079e-05 instance=- app_engine_release=1.9.30 trace_id=-

A 2015-11-27 13:00:45.095 304 0 B 1 ms /manifest.json 182.73.224.148 - - [26/Nov/2015:23:30:45 -0800] "GET /manifest.json HTTP/1.0" 304 - - "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.86 Safari/537.36" "www.-----.com" ms=1 cpu_ms=0 cpm_usd=0 instance=- app_engine_release=1.9.30 trace_id=-

A 2015-11-27 13:03:14.575 204 608 B 1 ms /manifest.json 10.35.59.147 - - [26/Nov/2015:23:33:14 -0800] "GET /manifest.json HTTP/1.0" 204 608 - "-" "www.-----.com" ms=1 cpu_ms=0 cpm_usd=6.7949e-05 instance=- app_engine_release=1.9.30 trace_id=-

1
javagoogle-chromegoogle-app-engine
Is ERR_CONTENT_DECODING_FAILED in the appengine app or an application consuming the static files. Also look at the HTTP Status codes, your 0 B log entries have a status code of 304 which means the content is not modified so use the cache, hence 0 bytes retrieved. I think your need to describe your application a bit better. – Tim Hoffman
Our application is link. It is a web application, I am getting these exceptions in browser's (Google/Firefox) consoles. Some of my scripts and css files are receiving these, which is breaking the whole UI. Example this json (one of the many files that fail) fails frequently link. This seems to be a very new phenomenon. – Vamsi Krishna Penumatsa
But a 304 response is not a new behaviour. Its always been there. You should look at how these assets are being requested by the browser. Look at your headers you can set cache control in app.yaml and no doubt in your java definition . cloud.google.com/appengine/docs/python/config/… – Tim Hoffman
Also look at this stackoverflow.com/questions/19451905/… – Tim Hoffman

1 Answers

3
votes

The culprit is pagespeed. Google deprecated/shutdown pagespeed, but the option for it is not found in the new google appengine console. Heading to the older console, and flushing the pagespeed cache fixed the issue for us.

Wonder why static files are served from pagespeed servers even when this is shutdown.