'How to build a proxy manager
I have a list of external HTTP proxies with each having their own authentication credentials. I want to create my own proxy that listens on multiple ports. When somebody connects to my proxy, I want to forward it to one of the proxies from my list. Each port should have a matching equivalent from the list.
Example:
Proxy list: user1:[email protected]:3001, user2:[email protected]:3002, user3:[email protected]:3003
For this list, I want to host my own proxy 127.0.0.1:2001, 127.0.0.1:2002, 127.0.0.1:2003
When somebody connects to my proxy, the request should be forwarded to the other proxy:
127.0.0.1:2001 => user1:[email protected]:3001
127.0.0.1:2002 => user2:[email protected]:3002
127.0.0.1:2001 => user3:[email protected]:3003
Additionally, I would like to have control over it. If somebody connects to 127.0.0.1:2001 but the proxy user1:[email protected]:3001 has some issues, I would like to hold the connection with the client connecting to 127.0.0.1:2001 to do some extra actions, for example re-try the request to user1:[email protected]:3001 or switch it to a different external proxy and re-try the request. The client connecting to 127.0.0.1:2001 should not see this re-try, the only thing the client should see is the final result.
How can this be achieved? I imagine to know the result of the request, some kind of mitm proxy would be needed.
Sources
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Source: Stack Overflow
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