var http = require('http');
var url = require('url');
var util = require('util');
var argUrl = process.argv[2];
var parsedUrl = url.parse(argUrl, true);
var options = {host: null, port: -1, path: null, method: 'GET'};
options.host = parsedUrl.hostname;
options.port = parsedUrl.port;
options.path = parsedUrl.pathname;
if (parsedUrl.search) options.path += "?" + parsedUrl.search;
var req = http.request(options, function(res){
  util.log('STATUS: ' + res.statusCode);
  util.log('HEADERS: ' + util.inspect(res.headers));
  res.setEncoding('utf8');
  res.on('data', function(chunk){
    util.log('BODY: ' + chunk);
  });
  res.on('error', function(err){
    util.log('RESPONSE ERROR: ' + err);
  });
});
req.on('error', function(err){
  util.log('REQUEST ERROR: ' + err);
});
req.end();

var http = require('http');
var querystring = require('querystring');
var contents = querystring.stringify({
  name: 'joey',
  email: 'joey@joey.com',
  address: 'joey university'
});
var options = {
  host: 'www.joey.com',
  path: '/application/node/post.php',
  method: 'POST',
  headers: {
    'Content-Type': 'application/x-www-form-urlencoded',
    'Content-Length': contents.length
  }
};
var req = http.request(options, function(res){
  res.setEncoding('uft8');
  res.on('data', function(data){
    console.log(data);
  });
});
req.write(contents);
req.end(); //不能漏掉，结束请求，否则服务器将不会收到信息。