Re: setting a cookie via an image

You are forgetting the Content-Type: image/gif header. I don't know if that is relevant. binmode FILE is also a good idea, though not relevant. It may simply be that the browser is dropping the headers when img is called from a page.

It rather begs the question - why aren't you just setting the cookie when the main page loads. This sort of stuff usually makes me think spyware.

cheers

tachyon

Comment on Re: setting a cookie via an image

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Re^2: setting a cookie via an image by jonnyfolk (Vicar) on Aug 28, 2004 at 11:33 UTC
In the original question I stated that I needed a conditional to check if the information is already there - otherwise reloading the page would overwrite the original information. there is nothing sinister about it at all. Why do I need the information? A lot of users to that page are referred and I need to keep track of where they came from. But if they take a look around the site and reload that page then the original information is lost as a new cookie is set I added the header but it didn't make a difference - thanks anyway	[reply]
Re^3: setting a cookie via an image by Joost (Canon) on Aug 28, 2004 at 14:10 UTC
Most browsers actually report the page the image is loaded for as the referer for images. I don't know if that is what you want: `page1.html -link-> page2.html -img-> image.gif page referer ------------------------ page1.html ? page2.html page1.html image.gif page2.html` [download] "What should it profit a man, if he should win a flame war, yet lose his cool?"	[reply] [d/l]
Re^3: setting a cookie via an image by tachyon (Chancellor) on Aug 29, 2004 at 02:02 UTC
It sounds like you simply have a broken implementation of intrasite user tracking. The usual logic is: `if ! tracking_cookie make new session ID log referer, browser, blah as initial data add entry page to track log for session ID send cookie with session ID when returning page else add page to track log for session ID` [download] Once you have set a cookie (with a session ID) reloading a page will still send that cookie to you provided the path is correct. cheers tachyon	[reply] [d/l]