Where is body in a nodejs http.get response?


Question

I'm reading the docs at http://nodejs.org/docs/v0.4.0/api/http.html#http.request, but for some reason, I can't seem to to actually find the body/data attribute on the returned, finished response object.

> var res = http.get({host:'www.somesite.com', path:'/'})

> res.finished
true

> res._hasBody
true

It's finished (http.get does that for you), so it should have some kind of content. But there's no body, no data, and I can't read from it. Where is the body hiding?

1
174
5/23/2018 3:21:01 PM

Accepted Answer

Edit: replying to self 6 years later

The await keyword is the best way to handle this, avoiding callbacks and .then()

You'll also need to use an HTTP client that returns Promises. http.get() still returns a Request object, so that won't work. You could use fetch, but superagent is a mature HTTP client which features more reasonable defaults including query simpler string encoding, properly using mime types, JSON by default, and other common HTTP client features. await will wait until the Promise has a value - in this case, an HTTP reponse!

const superagent = require('superagent');

(async function(){
  const response = await superagent.get('https://www.google.com')
  console.log(response.text)
})();

Using await, control simply passes onto the next line once the promise returned by superagent.get() has a value.

50
4/16/2018 9:51:07 AM

http.request docs contains example how to receive body of the response through handling data event:

var options = {
  host: 'www.google.com',
  port: 80,
  path: '/upload',
  method: 'POST'
};

var req = http.request(options, function(res) {
  console.log('STATUS: ' + res.statusCode);
  console.log('HEADERS: ' + JSON.stringify(res.headers));
  res.setEncoding('utf8');
  res.on('data', function (chunk) {
    console.log('BODY: ' + chunk);
  });
});

req.on('error', function(e) {
  console.log('problem with request: ' + e.message);
});

// write data to request body
req.write('data\n');
req.write('data\n');
req.end();

http.get does the same thing as http.request except it calls req.end() automatically.

var options = {
  host: 'www.google.com',
  port: 80,
  path: '/index.html'
};

http.get(options, function(res) {
  console.log("Got response: " + res.statusCode);

  res.on("data", function(chunk) {
    console.log("BODY: " + chunk);
  });
}).on('error', function(e) {
  console.log("Got error: " + e.message);
});

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