Hi there, experts!
I have three questions regarding proxy servers, they are all related and I'm giving 500 points to the person who answers correctly.
I would like to know if there is any way and how to find out detailed information about a Proxy Server.
For instance, if you go to www.proxy4free.com/page1.html
, you will see a list of proxy servers with extra information such as the "type" of server. How can a program scan a server to see if it is "transparent", "anonymous", "high anonymity", etc.?
Can I use Winsock to obtain this information?
How can I know which port I have to use to connect to the Proxy Server?
How can I know if the IP address that I'm pinging or connecting to is actually a Proxy Server?