How to get value of response headers in nodejs

Question

const URL = 'https://www.imdb.com/title/tt0816222/? 
ref_ = fn_al_tt_2 ';

(async() => {

    const response = await request({
      uri: URL,
      headers: {
        'Connection': 'keep-alive',
        'User-Agent': 'Mozilla/0.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36'

      },

    });

I need help from this code. How can I get the response header values in console of visual studio code for the following site.

Please add all code to the question itself, not to the comment section — Nico Haase
– Nico Haase, Commented Feb 6, 2019 at 8:56
@Ariz that's what I meant actually...I miss the word at the time :D — Elmer Dantas
– Elmer Dantas, Commented Feb 6, 2019 at 11:50

Elmer Dantas · Accepted Answer · 2019-02-06 08:49:27Z

1

Just handle the Promise from request library

  request({
    uri: 'https://www.imdb.com/title/tt0816222/?',
    headers: /*your headers*/ 
    })
    .then(function(response){
       console.log(response.headers)
    })

answered Feb 6, 2019 at 8:49

Elmer Dantas

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4 Comments

Christian Vincenzo Traina Over a year ago

That's the same of async/await

Elmer Dantas Over a year ago

@CristianTraìna I just look at his comment where it's written require('request-promise') and assume that async/await is not supported, that's why I've posted the Promise approach.

arizafar Over a year ago

@ElmerDantas why async await is not supported with request-promise? it returns a promise only.

Elmer Dantas Over a year ago

@Ariz I've said "I assume" that is not supported. Just a guess. The only reason for posting a Promise approach.

anuragb26 · Accepted Answer · 2019-02-06 08:26:26Z

0

You will get the response headers in response.headers

answered Feb 6, 2019 at 8:26

anuragb26

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4 Comments

Xing Ahmad Muneeb Over a year ago

But It says undefined?

Xing Ahmad Muneeb Over a year ago

console.log(response.headers); Or console.log(response.headers['user-agent']); tried both but nothing works

anuragb26 Over a year ago

I think the issue is that request module doesn't return a promise.It accepts a callback.So you can't use async await syntax in this case

Xing Ahmad Muneeb Over a year ago

so what to do? Is there any method?

Manzurul Hoque Rumi · Accepted Answer · 2019-02-06 08:27:35Z

0

Print like this

console.log(response.headers)

answered Feb 6, 2019 at 8:27

Manzurul Hoque Rumi

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1 Comment

Xing Ahmad Muneeb Over a year ago

const request = require('request-promise'); const cheerio = require('cheerio'); const URL = 'imdb.com/title/tt0816222/?ref_=fn_al_tt_2'; (async () => { const response = await request({ uri:URL, headers:{ 'Connection': 'keep-alive', 'User-Agent': 'Mozilla/0.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36' }, }); console.log(response.headers); })()

Haris Bouchlis · Accepted Answer · 2019-02-06 09:02:30Z

0

This code prints headers:

const URL = 'https://www.imdb.com/title/tt0816222/?ref_ = fn_al_tt_2';
const request = require('request');

(async () => {

  const response = await request({
    uri: URL,
    headers: {
      'Connection': 'keep-alive',
      'User-Agent': 'Mozilla/0.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36'

    },

  });
  console.log(response.headers);
})();

edited Feb 6, 2019 at 9:02

Haris Bouchlis

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answered Feb 6, 2019 at 8:43

Oleksandr Dushyn

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Comments

arizafar · Accepted Answer · 2019-02-06 10:21:49Z

0

Because you are just fetching the body of response from request npm.

add resolveWithFullResponse: true in request options.

const URL = 'https://www.imdb.com/title/tt0816222/? 
ref_ = fn_al_tt_2 ';

(async() => {

    const response = await request({
      uri: URL,
      headers: {
        'Connection': 'keep-alive',
        'User-Agent': 'Mozilla/0.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36'

      },
	resolveWithFullResponse: true
    });

if you need to only headers

const URL = 'https://www.imdb.com/title/tt0816222/? 
ref_ = fn_al_tt_2 ';

(async() => {

    const {headers} = await request({
      uri: URL,
      headers: {
        'Connection': 'keep-alive',
        'User-Agent': 'Mozilla/0.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36'

      },
	resolveWithFullResponse: true
    });
    
    console.log(headers)

edited Feb 6, 2019 at 10:21

answered Feb 6, 2019 at 9:40

arizafar

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2 Comments

Xing Ahmad Muneeb Over a year ago

thanks brother it worked now reverse it how can we get the request headers instead of response and how can we get only one specific header value and store it in variable?

arizafar Over a year ago

now response.header is just a native object so you simply can do response.header['content-type'] etc, here you will get the value of content-type header. updated answer if you need only header.

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