Simple node.js proxy by piping http server to http request

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北恋
北恋 2020-12-08 03:31

Trying to learn more about node.js by making a simple http proxy server. The use scenario is simple: user -> proxy -> server -> proxy -> user

The following code work

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  •  猫巷女王i
    2020-12-08 03:48

    OK. Got it.

    UPDATE: NB! As reported in the comments, this example doesn't work anymore. Most probably due to the Streams2 API change (node 0.9+)

    Piping back to the client has to happen inside connector's callback as follows:

    #!/usr/bin/env node
    
    var
        url = require('url'),
        http = require('http'),
        acceptor = http.createServer().listen(3128);
    
    acceptor.on('request', function(request, response) {
        console.log('request ' + request.url);
        request.pause();
        var options = url.parse(request.url);
        options.headers = request.headers;
        options.method = request.method;
        options.agent = false;
    
        var connector = http.request(options, function(serverResponse) {
                serverResponse.pause();
                response.writeHeader(serverResponse.statusCode, serverResponse.headers);
                serverResponse.pipe(response);
                serverResponse.resume();
        });
        request.pipe(connector);
        request.resume();
    });
    

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