Possible to get HTTP headers?

Posted on Fri 12th, May 2017

• #1

dave_irvine

Following code sample fails:

var wifi = require("EspruinoWiFi");
var http = require('http');

wifi.connect('yourAP', { password: 'yourPass' }, function(err) {
  if (err) { throw err; }
  
  wifi.getIP(function (err, data) {
    if (err) { throw err; }

    console.log(data);
    
    var options = {
      host: 'espruino.com',
      port: 80,
      path: '/',
      method: 'HEAD',
    };

    console.log('about to http request');
    http.request(options, function(res) {
      console.log('request cb');
      res.on('data', function(data) {
        console.log("HTTP> "+data);
      });

      res.on('close', function(data) {
        console.log(data);
        console.log("Connection closed");
      });

      res.on('error', function(err) {
        console.log(err);
      });
    }).end();
  });
});

Produces only:

about to http request
request cb
false
Connection closed

Change it to a GET request and you get:

about to http request
request cb
HTTP> <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
>

Moved Permanently

The docu
HTTP> ment has moved here.

s>Apache/2.4.18 (Ubuntu) Server at espruino.com Port 80
tml>
false
Connection closed

but I want the HTTP headers not the content.

• #2

Gordon

The headers should be in res anyway? The callback only gets called once the headers have been parsed.

By the way, I'll be on holiday next week, so I won't be able to answer any of your posts now until I get back.
• #3

dave_irvine

Don't blame you Gordon, its a full-time job just supporting my forum posts ;)

• #4

Wilberforce


function onPageRequest(req, res) {

	var a = url.parse(req.url, true);
	console.log(a);

  console.log(req.headers);
  console.log(req.method);

headers:

{
  "Host": "192.168.1.13",
  "Connection": "keep-alive",
  "Cache-Control": "max-age=0",
  "Upgrade-Insecure-Requests": "1",
  "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.96 Safari/537.36",
  "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
  "Accept-Encoding": "gzip, deflate, sdch",
  "Accept-Language": "en-GB,en-US;q=0.8,en;q=0.6"
 }

• #5

dave_irvine

Yup perfect, thanks +Wilberforce, I completely forgot about the .headers prop.

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Possible to get HTTP headers?

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