341910 - prefetching doesn't work

Status: RESOLVED WORKSFORME

(Core :: Networking, defect)

Description

[bugzillaspambox]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; de; rv:1.8.0.4) Gecko/20060508 Firefox/1.5.0.4
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; de; rv:1.8.0.4) Gecko/20060508 Firefox/1.5.0.4

I don't have any additional information but what already the headline says. You can have a look at this demonstration page

http://ontheserver.de/temp/Mozilla/Firefox/prefetching/

to check if prefetching works on your built. I tested it on Mozilla Firefox 1.5.0.4, which should be the newest stable built so far (June 2006).

Reproducible: Always

Steps to Reproduce:
1. go to http://ontheserver.de/temp/Mozilla/Firefox/prefetching/
Actual Results:  
doesn't prefetch the picture, if you click the link, the picture needs to be downloaded first and can be shown after it (or while it is downloading)

Expected Results:  
should prefetch the picture before you click on the link, the picture should be shown right after clicking on the link. no more waiting for downloading should be neccessary

Comment 1

[bugzillaspambox]

btw: you can also right click the link on the demonstration page and click "save target as ..." and you will see that the firefox download manager will download the picture instead of just coping it from the cache. But remember that the download will start downloading as soon as you click "save target as ..." even if you haven't choosen the directory jet. So just make the right click and then hit the enter key right after it, don't waste time in choosing a directory or you won't be able to see that your download manager is downloading.

Comment 2

[Jo Hermans]

works for me in Firefox 2.0
Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8.1a3) Gecko/20060618 BonEcho/2.0a3

I checked using the indicator lights of my ADSL modem, which kept blinking after the main page was downloaded. When they stopped, and I clicked the link, there were no lights blinking.

Comment 3

[Ryan Flint [:rflint] (ping via IRC for reviews)]

WFM Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.4) Gecko/20060508 Firefox/1.5.0.4

Works just fine using the given URL and http://gemal.dk/browserspy/prefetch.php
Sniffing the generated traffic with Ethereal also confirms that it is indeed working on 1.5.0.4 and the latest branch and trunk builds.

Comment 4

[bugzillaspambox]

ya ... seams as I thought the 4 or 5 seconds it took to load were while the file was downloading but it seams as firefox is just a little slow in displaying images. It took the same time when I tried the page with the picture on my hard disk.

Anyway, there seams to be a problem at least if you right click the link and try to save the "prefetched" picture.

Please confirm and reopen if necessary.