const http = require('http');

const querystring = require('querystring');

const postData = querystring.stringify({

  'msg': 'Hello World! ----- 哈利路亚'

});

const options = {

  hostname: '192.168.1.6',

  port: 8080,

  path: '/hello',

  method: 'POST',

  headers: {

    'Content-Type': 'application/x-www-form-urlencoded',

    'Content-Length': Buffer.byteLength(postData)

  }

};

const req = http.request(options, (res) => {

  console.log(`STATUS: ${res.statusCode}`);

  console.log(`HEADERS: ${JSON.stringify(res.headers)}`);

  res.setEncoding('utf8');

  res.on('data', (chunk) => {

    console.log(`BODY: ${chunk}`);

  });

  res.on('end', () => {

    console.log('No more data in response.');

  });

});

req.on('error', (e) => {

  console.error(`problem with request: ${e.message}`);

});

// write data to request body

req.write(postData);

req.end();