How to detect valid proxy server?

livelybrowser said:

Hello everyone,

I want to create an appilcation to automatically detect valid proxy servers.
However, now I don't have a good idea on how to implement it in detail.
The only one method that I can use is detecting random IP and port.
Is there any good idea? Thanks.

Sincerely,

Lively Browser

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mjayson said:

A simple solution would be using a service like maxmind - they got a proxy score service but ya gotta pay a few pennies.

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flow said:

Check ping
time ?

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livelybrowser said:

I want to build a proxy model in my own appilcation. The main purpose is detecting valid proxy server. Then I can use this proxy automatically for my users. So I don't want a proxy list, I want a random detected proxies.

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mjayson said:

In that case just find a list with standard proxy ports and try to fetch ex. google.com through these ports - maybe also through socks5. However you should probably get some BP hosting for that.

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justone said:

Are you sure you know what anonymity is about ?
How proxies work, what makes the difference of the anonymity levels etc ?

To be honest: You sound a bit confused, maybe better get more knowhow about it. Use the different proxies and see differences for yourself.
If you create an app early with so little background knowledge it's likely not to be a success.

Play around, test socks, http, web proxies.
also learn about the various http server headers

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carlitosway13 said:

So you want your application to FIND valid proxies, ok theres already appa like that, heres what you need to know

1) Finding proxies can be considered an illigal activity for your ISP, so make sure you either keep it minimalistic or hide the checking.
2) You'll have to check n ip at a time ex:

85.91.121.18
85.91.121.19
85.91.121.20
85.91.121.21
85.91.121.22

also for each IP you need to check the several common proxy ports:
80,3128 and 8080

I recommend you multi-thread aswell send your ping or w.e THROUGH PROXIES to hide from your ISP

also keep in mind that some IPs are dangerous(government) others are empty and or useless. You shoud select a range like"

85.91.1.1
85.91.254.254

that alone will take you at least an hour even with multi-threading to check them all, and *MAYBE* find a proxy, so try using ranges that are real and relevent, use other proxies and create a range based on them

hope this helps

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carlitosway13 said:

The method your describing is called "Proxy Hunting"

I haven't encountered any issue with my ISP mainly since i don't try to find proxies randomly (takes way too long & there's that risk) take a look at Accessdriver it's a hacking tool, it has several proxy features you might be interested in, including a proxy hunter based on a range with randomized checking on that range, (since its not consecutive its less likely to be noticed by the ISP)

Multi-threading 100-500 threads!!!!! wow you'll need some real bandwidth!! also keep in mind that it may cause for a lot of IPs to time out(since your internet speed will slow)

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