353047 - A png file getting read twice from a server

Status: RESOLVED DUPLICATE of bug 304574

(Firefox :: File Handling, defect)

Description

[saul.talve]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.7) Gecko/20060909 Firefox/1.5.0.7
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.7) Gecko/20060909 Firefox/1.5.0.7

If a document with Content-Type: image/png is sent to Firefox, then it loads the URL twice. Try it out -- make a server side script that sends PNG files directly to browser, attach a counter to it and voila for a single refresh the counter increases by two. 

Reproducible: Always

Steps to Reproduce:
1. make a server side script that sends PNG files directly to browser
2. attach a counter to it
3. a single refresh the counter increases by two. 

check it out
============
here's the image creator: http://www.kohviradio.com/board/tokenimage-create.php
here's the counter: http://www.kohviradio.com/board/counter/counter
Actual Results:  
what happened was that firefox asked for the file twice, although I made only one request

Expected Results:  
one request in browser means firefox should make exactly one request to the file I'm asking for

I found this bug while developing a spam protection solution. You know the drill -- dynamically created images and users have to type in the verification code. Actually it's quite annoying if my database fills up twice the speed it should by design :(

Comment 1

[Adam Guthrie]

*** This bug has been marked as a duplicate of 304574 ***