http.get method() ignores query params when passing an URL as first argument

[gabriel-araujjo]

• Version: v8.10.0
• Platform: Linux 4.15.0-29-generic Ubuntu SMP Tue Jul 17 15:39:52 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
• Subsystem: http

When passing an URL with query params as the first argument to http.get() method, the query is ignored.

const URL = require('url');
const http = require('http');
const assert = require('assert');

function parseJsonResp(next) {
   return function(resp) {
     var raw = '';
     resp.on('data', function(chunk) {
       raw += chunk;
     });
     resp.on('end', function() {
       next(null, JSON.parse(raw));
     });
  }
};

const url = URL.parse('http://httpbin.org/get');
url.query = {foo: 'bar'}

http.get(url, parseJsonResp(function(err, obj) {
  assert(obj.args.foo === 'bar'); // It fails here
}));

[devsnek]

http.get doesn't expect a whatwg url object, it expects an options argument similar to the output of url.parse()

[gabriel-araujjo]

The documentation says that the first argument can be an Object, a string or an URL.

[rubys]

It is a very subtle thing... the documentation says URL, and what you passed was a Url. Click on the links to see the difference.

Try the following:

const http = require('http');
const assert = require('assert');

function parseJsonResp(next) {
   return function(resp) {
     var raw = '';
     resp.on('data', function(chunk) {
       raw += chunk;
     });
     resp.on('end', function() {
       next(null, JSON.parse(raw));
     });
  }
};

const url = new URL('http://httpbin.org/get');
url.searchParams.set('foo', 'bar')

http.get(url, parseJsonResp(function(err, obj) {
  assert(obj.args.foo === 'bar'); // It fails here
}));

Key changes:

• Remove require('url')
• Change URL.parse to new URL
• Change url.query = to url.searchParams.set()

[gabriel-araujjo]

OK. Thanks! 👍. Shouldn't this be explicit on documentation?

[rubys]

@gabriel-araujjo just to be clear, this issue can be closed now? Ah, missed your edit. Suggestions on how to make it more clear?

[gabriel-araujjo]

I guess an example with that distinction is enough.

[jasnell]

The http URL has since been updated to support URL objects and properly handles the query string now so this can be closed.