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How to check that two different pages or url issued from the same browser and ip

I want to check if two of my url are running from the same browser and ip

To do this, I used the User Agent to check and get the ip from the request object, this was fine before Firefox, but when it comes to IE 7+ versions , this weird IE generates different User Agents for the same web application URL.

My version of IE is 11.0 +

For a single request, I get a UserAgent as

Mozilla / 5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident / 5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; PC 6.0; .NET4.0C; InfoPath.3; .NET4.0E)

And for another request:

Mozilla / 5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident / 5.0)

In fact, I tested userAgents to execute some business logic based on userAgents . so basically I'm looking for a solution based on userAgnets.

I think the discovery feature suggested by MSDN docs will not work here.

Any solution to get the same userAgents would be helpful

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2 answers

At first glance, it could be easily solved by writing the appropriate RegEx for each browser. Several browser discovery rules can be found here . Even all (or most) of the available user agents can be found here (for example, for IE , for Chrome , etc.).

So, let's say for the IE RegEx browser it could be: MSIE[^;,)]+ .
For Chrome, it should be Chrome[^;,)\s]+ , similar to FireFox : Firefox[^;,)\s]+ .

The event is larger - there is a third-party API for parsing the user agent.

BUT there are many browsers and even more browser versions! You will never be sure that all browsers are covered.

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You can try using fingerprints on canvas.

The idea is that each equipment generates unique sparks on an html canvas.
By storing and analyzing the generated canvas, you can re-identify your user.

Source code example: https://github.com/Valve/fingerprintjs

There is even a test page here: http://valve.imtqy.com/fingerprintjs/

Scroll down until you see Your browser fingerprint .
Works for me even after a complete change to UserAgent.

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Source: https://habr.com/ru/post/1207872/

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