Node.js getaddrinfo ENOTFOUND - node.js

Question

When using Node.js to try and get the html content of the following web page:
eternagame.wikia.com/wiki/EteRNA_Dictionary
I get the following error:
events.js:72
throw er; // Unhandled 'error' event
^
Error: getaddrinfo ENOTFOUND
at errnoException (dns.js:37:11)
at Object.onanswer [as oncomplete] (dns.js:124:16)
I did already look up this error on stackoverflow, and realized that this is because node.js cannot find the server from DNS (I think). However, I am not sure why this would be, as my code works perfectly on www.google.com.
Here is my code (practically copied and pasted from a very similar question, except with the host changed):
var http = require("http");
var options = {
host: 'eternagame.wikia.com/wiki/EteRNA_Dictionary'
};
http.get(options, function (http_res) {
// initialize the container for our data
var data = "";
// this event fires many times, each time collecting another piece of the response
http_res.on("data", function (chunk) {
// append this chunk to our growing `data` var
data += chunk;
});
// this event fires *one* time, after all the `data` events/chunks have been gathered
http_res.on("end", function () {
// you can use res.send instead of console.log to output via express
console.log(data);
});
});
Here is the source where I copied and pasted from : How to make web service calls in Expressjs?
I am not using any modules with node.js.
Thanks for reading.

Answer 1

In Node.js HTTP module's documentation: http://nodejs.org/api/http.html#http_http_request_options_callback
You can either call http.get('http://eternagame.wikia.com/wiki/EteRNA_Dictionary', callback), the URL is then parsed with url.parse(); or call http.get(options, callback), where options is
{
host: 'eternagame.wikia.com',
port: 8080,
path: '/wiki/EteRNA_Dictionary'
}
Update
As stated in the comment by #EnchanterIO, the port field is also a separate option; and the protocol http:// shouldn't be included in the host field. Other answers also recommends the use of https module if SSL is required.

Answer 2

Another common source of error for
Error: getaddrinfo ENOTFOUND
at errnoException (dns.js:37:11)
at Object.onanswer [as oncomplete] (dns.js:124:16)
is writing the protocol (https, https, ...) when setting the host property in options
// DON'T WRITE THE `http://`
var options = {
host: 'http://yoururl.com',
path: '/path/to/resource'
};

Answer 3

in the options for the HTTP request, switch it to
var options = { host: 'eternagame.wikia.com',
path: '/wiki/EteRNA_Dictionary' };
I think that'll fix your problem.

Answer 4

My problem was that my OS X (Mavericks) DNS service needed to be restarted. On Catalina and Big Sur DNS cache can be cleared with:
sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder
Older macOS versions see here.

Answer 5

If you need to use https, then use the https library
https = require('https');
// options
var options = {
host: 'eternagame.wikia.com',
path: '/wiki/EteRNA_Dictionary'
}
// get
https.get(options, callback);

Answer 6

var http=require('http');
http.get('http://eternagame.wikia.com/wiki/EteRNA_Dictionary', function(res){
var str = '';
console.log('Response is '+res.statusCode);
res.on('data', function (chunk) {
str += chunk;
});
res.on('end', function () {
console.log(str);
});
});

Answer 7

I think http makes request on port 80, even though I mentioned the complete host url in options object. When I run the server application which has the API, on port 80, which I was running previously on port 3000, it worked. Note that to run an application on port 80 you will need root privilege.
Error with the request: getaddrinfo EAI_AGAIN localhost:3000:80
Here is a complete code snippet
var http=require('http');
var options = {
protocol:'http:',
host: 'localhost',
port:3000,
path: '/iso/country/Japan',
method:'GET'
};
var callback = function(response) {
var str = '';
//another chunk of data has been recieved, so append it to `str`
response.on('data', function (chunk) {
str += chunk;
});
//the whole response has been recieved, so we just print it out here
response.on('end', function () {
console.log(str);
});
}
var request=http.request(options, callback);
request.on('error', function(err) {
// handle errors with the request itself
console.error('Error with the request:', err.message);
});
request.end();

Answer 8

I fixed this error with this
$ npm info express --verbose
# Error message: npm info retry will retry, error on last attempt: Error: getaddrinfo ENOTFOUND registry.npmjs.org registry.npmjs.org:443
$ nslookup registry.npmjs.org
Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
registry.npmjs.org canonical name = a.sni.fastly.net.
a.sni.fastly.net canonical name = prod.a.sni.global.fastlylb.net.
Name: prod.a.sni.global.fastlylb.net
Address: 151.101.32.162
$ sudo vim /etc/hosts
# Add "151.101.32.162 registry.npmjs.org` to hosts file
$ npm info express --verbose
# Works now!
Original source: https://github.com/npm/npm/issues/6686

Answer 9

Note that this issue can also occur if the domain you are referencing goes down (EG. no longer exists.)

Answer 10

in my case error was because of using incorrect host value
was
var options = {
host: 'graph.facebook.com/v2.12/',
path: path
}
should be
var options = {
host: 'graph.facebook.com',
path: path
}
so anything after .com or .net etc should be moved to path parameter value

Answer 11

In my case the problem was a malformed URL.
I had double slashes in the URL.

Answer 12

I tried it using the request module, and was able to print the body of that page out pretty easily. Unfortunately with the skills I have, I can't help other than that.

Answer 13

I got this error when going from development environment to production environment. I was obsessed with putting https:// on all links. This is not necessary, so it may be a solution for some.

Answer 14

I was getting the same error and used below below link to get help:
https://nodejs.org/api/http.html#http_http_request_options_callback
I was not having in my code:
req.end();
(NodeJs V: 5.4.0)
once added above req.end(); line, I was able to get rid of the error and worked fine for me.

Answer 15

Try using the server IP address rather than the hostname.
This worked for me. Hope it will work for you too.

Answer 16

I got rid of http and extra slash(/).
I just used this 'node-test.herokuapp.com' and it worked.

Answer 17

If still you are facing checkout for proxy setting, for me it was the proxy setting which were missing and was not able to make the request as direct http/https are blocked. So i configured the proxy from my organization while making the request.
npm install https-proxy-agent
or
npm install http-proxy-agent
const httpsProxyAgent = require('https-proxy-agent');
const agent = new httpsProxyAgent("http://yourorganzation.proxy.url:8080");
const options = {
hostname: 'encrypted.google.com',
port: 443,
path: '/',
method: 'GET',
agent: agent
};

Answer 18

I got this issue resolved by removing non-desirable characters from the password for the connection. For example, I had these characters: <##% and it caused the problem (most probably hash tag was the root cause of the problem).

Answer 19

My problem was we were parsing url and generating http_options for http.request();
I was using request_url.host which already had port number with domain name so had to use request_url.hostname.
var request_url = new URL('http://example.org:4444/path');
var http_options = {};
http_options['hostname'] = request_url.hostname;//We were using request_url.host which includes port number
http_options['port'] = request_url.port;
http_options['path'] = request_url.pathname;
http_options['method'] = 'POST';
http_options['timeout'] = 3000;
http_options['rejectUnauthorized'] = false;