How to check proxy anonymity level by header parameters?

Hi blackhaters, i need your help...
I develop custom proxy checker and i need to check every proxy level of anonymity - L1(elite proxies), L2(anonymous proxies) and L3(transparent proxies).
What i do:
I use proxy judge and open a connection(with proxy) to the judge. I get the response header and all paramethers - this is not a problem.

The problem is that i don't know which header parameters must be available for L1 and which other for L2.. ect.
I found this list of header parameters.



I will be very happy if somebody can tell me:
For L1 proxy you need to pass these parameters: 1,2,3...
For L2 proxy you need to pass these parameters: 5,9,25...
For L2 proxy... etc.

Thanks!

Can somebody help please?

google is your best friend buddy, it is long to explain..

or simply use any other proxy checker against a set of proxies and figure out what headers for what levels are

Level 1(Elite):
REMOTE_ADDR

Level 2(Anonymous):
HTTP_X_FORWARDED_FOR
X-Forwarded-For
HTTP_VIA

Level 3(Transparent):
X-Forwarded-For: $IP
HTTP_X_FORWARDED_FOR: $IP
HTTP_VIA: $IP
HTTP_VIA: 1.1 $IP
HTTP_VIA: 1.0 $IP
HTTP_HOST: $IP
REMOTE_ADDR: $IP

Replace $IP with your actual IP so that if it's an L3 and redirects it shows both IPs. It should trigger one of those strings as a response for everything you check. If it triggers only REMOTE_ADDR: with the proxy IP, then it's L1, but if you get the REMOTE_ADDR: Your:IP then you'll know it was forwarded. Using those strings you should be able to check the level of any alive and valid proxy I believe. I'm not any kind of expert in PHP though, so feel free to double check or see if someone who knows a little more responds, but that's how I had mine setup more or less.

Thank you very much dudes, and special thanks to akacash, you save me long time!