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Re: [whatwg] Modifying the URL inside beforeunload event

From: Roger Hågensen <rescator@emsai.net>
Date: Sat, 15 Nov 2014 04:53:01 +0100
Message-ID: <5466CE1D.6050501@emsai.net>
To: whatwg@lists.whatwg.org
On 2014-11-15 03:07, cowwoc wrote:
> On 14/11/2014 8:56 PM, Roger Hågensen wrote:
> Did you also use a URL parameter to indicate which cookie the server 
> should look in? I think my solution is problematic in that I have to 
> go through GetTabId.html on page load (which looks ugly) and even 
> worse I recently discovered that View Source does not work because the 
> browser re-sends the request without the tabId parameter (which I 
> stripped to make the URL shareable).

What I did was to use a "one shot cookie", a request was only ever made 
by user interaction.
The server basically get a token cookie and a id cookie. the server the 
responds and set the cookies for deletion. There is only ever one token 
and one id cookie sent, re-using the cookie names are not an issue.

Now if each tab automatically makes requests then that is a different 
issue and in that case using POST instead of GET is advised, in that 
case you only ever have to send cookies from the server and not to the 

> Please describe your approach in more detail on 
> http://stackoverflow.com/q/26556749/14731 so we can learn for each.

Don't have an account there, sorry.


Roger "Rescator" Hågensen.
Freelancer - http://www.EmSai.net/
Received on Saturday, 15 November 2014 03:53:30 UTC

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