.NET HTTP Proxy with Socket HTTP Tunnel

  • Status Closed
  • Budget $250 - $750 USD
  • Total Bids 3

Project Description

We need to have a built the following in C#

- HTTP Proxy server

- HTTP Socket Tunnel (server+client)

Requirements and usage:

- Browser/Software (B) with proxy configured, runs on our servers and is already built.

- Proxy server (P) runs on our servers

- Http Tunnel server (TS) runs on our servers

- Http Tunnel client (TC) runs on our customers PC (behind a firewall)

- Webserver (W) the request end-point/server

- Every Http request from our servers that are configured to use the TC as a proxy should be routed via the B->P->TS->TC->W, and the HTTP response should follow the W->TC->TS->P->B path.

- The TS should keep a track of the connected TC's and ask it to lunch new sockets if needed.

- The P/TS should return a HTTP relevant error like "504 Gateway Timeout", or similar, if TC is not connected or connection is lost.

- The TC should connect to the TS using a "command/com" port.

- After the TC connects the TS should identify the unique client and, send a that will tell the TC to open a second socket, where the TC will listen for HTTP requests.

- Each TC has to be uniquely identified so the HTTP requests can be sent using the correct endpoint TC.

- Each TC should have a least one(1) socket ready that is not in use, and is just waiting for http requests to process.

- Port numbers should be configurable in bot P, TS and TC

- The P, TS and TC should be streaming sockets/proxies to speed up the requests/responses.

- It's critical/important that it is the TC that opens connections to the TS, because of firewall, subnet, public-ip issues.

- The B should use a HTTP header to identify which TC to send the request to, The TS, TC or both should remove this header before sending the request to W.

- The TC should send the HTTP requests like an anonymous proxy, meaning that the W should not be able to see any info about the HTTP request origin, except of TC.

- The P, TS and TC should work in high stress environment, with many requests passing, so threading, performance and cleanup of threads/sockets and memory is important.

We have done some research and found the following open source C# HTTP Proxy ([url removed, login to view]), we have also done a little testing to see if the project is possible, and concluded that it is possible to do.

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