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Shall I send GET to appropriate client and POST to appropriate web server in proxy?

This is a discussion on Shall I send GET to appropriate client and POST to appropriate web server in proxy? within the C Programming forums, part of the General Programming Boards category; I want to write a http proxy server in C in Visual Studio. I don't want it to be in ...

  1. #1
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    Shall I send GET to appropriate client and POST to appropriate web server in proxy?

    I want to write a http proxy server in C in Visual Studio. I don't want it to be in C++. Should I read rfc1945 amd rfc2616? Can you describe very simply what should I do? I didn't read those protocols yet (http 1.0 and http 1.1). Should I transfer GET to the appropriate client and POST to appropriate web server? Is there any high-level library or API can ease programming? What is the best way to implement? Using threads or io-multiplexing or asynchronous (nonblocking)?

    Thanks!

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    it's kind of dumb to ask for help like this when you haven't read the RFC's. should you read them? of course. do that first, then ask questions. for api help, do this 'google c library http'. as for how to implement there are tradeoffs for each approach. threads make it easy to program but aren't as scalable as using asynchronous methods.
    stahta01 likes this.

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    Quote Originally Posted by dmh2000 View Post
    it's kind of dumb to ask for help like this when you haven't read the RFC's. should you read them? of course. do that first, then ask questions. for api help, do this 'google c library http'. as for how to implement there are tradeoffs for each approach. threads make it easy to program but aren't as scalable as using asynchronous methods.
    Are you sure? Because writing asynchronous doesn't use multi-CPUs, at least, if OS is multi-threaded written, the process should process packets in one thread (other than the programmer mix the solutions). Is it right?
    Last edited by nabat1; 01-14-2013 at 12:14 PM.

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    Quote Originally Posted by nabat1 View Post
    I want to write a http proxy server in C in Visual Studio. I don't want it to be in C++. Should I read rfc1945 amd rfc2616? Can you describe very simply what should I do?
    Use a third-party library to help you if you can. Reading the RFCs may help, but why implement it from scratch?

    For GET and POST see Libcurl: cURL and libcurl
    Libcurl is easy to call from C and other languages.

    For the HTTP Proxy server part, see here: c - HTTP proxy server - Stack Overflow

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    Quote Originally Posted by nabat1 View Post
    Are you sure? Because writing asynchronous doesn't use multi-CPUs, at least, if OS is multi-threaded written, the process should process packets in one thread (other than the programmer mix the solutions). Is it right?
    read this. its a little old but it summarizes the issue. The C10K problem

    yes threading will use more cores, but the efficiency of that drops off if you have more threads than cores.

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