test-http-request-body-size-buffers.js

var http = require('http'), 
        qs = require('querystring'), 
        url = require('url'), 
        sys = require('sys'), 
        handlePOST = function(request, callback){ 
            var data = new Buffer(4096),
                size = 0;
            request.addListener('data', function(chunk){ 
                chunk.copy(data, size, 0);
                size += chunk.length;
            }); 
            request.addListener('end', function(){ 
                callback(data, size); 
            }); 
        }; 
    http.createServer(function (request, response) { 
        response.writeHead(200, {'Content-Type': 'text/plain'}); 
        if (request.method == 'POST'){ 
            var t1 = new Date(); 
            handlePOST(request, function(data, size){ 
                var t2 = new Date()
                sys.puts('Received ' + size + ' in ' + (t2-t1) 
+ 'ms'); 
                response.end(''); 
            }) 
        } 
    }).listen(8001, '0.0.0.0');