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How do I check to see if a URL exists without pulling it down? I use the following code, but it downloads the whole file. I just need to check that it exists.

app.get('/api/v1/urlCheck/', function (req,res) {
    var url=req.query['url'];
    var request = require('request');
    request.get(url, {timeout: 30000, json:false}, function (error, result) {
        res.send(result.body);

    });

});

Appreciate any help!


Try this:

var http = require('http'),
    options = {method: 'HEAD', host: 'stackoverflow.com', port: 80, path: '/'},
    req = http.request(options, function(r) {
        console.log(JSON.stringify(r.headers));
    });
req.end();

node.js check if a remote URL exists, Try this: var http = require('http'), options = {method: 'HEAD', host: 'stackoverflow.​com', port: 80, path: '/'}, req = http.request(options, function(r)  If the connection to a URL (made with HttpURLConnection) returns with HTTP status code 200 then the file exists. EDIT: Note that since we only care it exists or not there is no need to request the entire document. We can just request the header using the HTTP HEAD request method to check if it exists.


Thanks! Here it is, encapsulated in a function (updated on 5/30/17 with the require outside):

    var http = require('http'),
         url = require('url');

    exports.checkUrlExists = function (Url, callback) {
        var options = {
            method: 'HEAD',
            host: url.parse(Url).host,
            port: 80,
            path: url.parse(Url).pathname
        };
        var req = http.request(options, function (r) {
            callback( r.statusCode== 200);});
        req.end();
    }

It's very quick (I get about 50 ms, but it will depend on your connection and the server speed). Note that it's also quite basic, i.e. it won't handle redirects very well...

node.js check if a remote URL exists, How do I check to see if a URL exists without pulling it down? I use the following code, but it downloads the whole file. I just need to check that it  How to check in node if module exists and if exists to load ? Check synchronously if file/directory exists in Node.js. 2196. copy and paste this URL into your


Simply use url-exists npm package to test if url exists or not

var urlExists = require('url-exists');

urlExists('https://www.google.com', function(err, exists) {
  console.log(exists); // true 
});

urlExists('https://www.fakeurl.notreal', function(err, exists) {
  console.log(exists); // false 
});

url-exists, A simple node library to determine if a url exists - boblauer/url-exists. index.js · Uses the request library instead. 4 years ago. package.json · Uses the request  The way to check if a file exists in the filesystem, using Node.js, is by using the fs.existsSync() method: const fs = require ('fs') const path = './file.txt' try { if (fs. existsSync (path)) { //file exists } } catch (err) { console. error (err) } This method is synchronous. This means that it’s blocking.


Take a look at the url-exists npm package https://www.npmjs.com/package/url-exists

Setting up:

$ npm install url-exists

Useage:

const urlExists = require('url-exists');

urlExists('https://www.google.com', function(err, exists) {
  console.log(exists); // true 
});

urlExists('https://www.fakeurl.notreal', function(err, exists) {
  console.log(exists); // false 
});

You can also promisify it to take advantage of await and async:

const util = require('util');
const urlExists = util.promisify(require('url-exists'));

let isExists = await urlExists('https://www.google.com'); // true
isExists = await urlExists('https://www.fakeurl.notreal'); // false

Happy coding!

boblauer/url-exists: A simple node library to determine if a , A deeper node library to determine if a url exists. url-exists-deep was developed for performance and accuracy. To check whether a url exists or not a HEAD  Upvoted, this is definitely the most modern (2018) way to detect if a file exists in Node.js – AKMorris Feb 15 '18 at 22:00 1 Yes this is the official recommended method to simply check if the file exists and manipulation afterwards is not expected.


require into functions is wrong way in Node. Followed ES6 method supports all correct http statuses and of course retrieve error if you have a bad 'host' like fff.kkk

checkUrlExists(host,cb) {
    http.request({method:'HEAD',host,port:80,path: '/'}, (r) => {
        cb(null, r.statusCode >= 200 && r.statusCode < 400 );
    }).on('error', cb).end();
}

StephanGeorg/url-exists-deep: A deeper node library to , The way to check if a file exists in the filesystem, using Node.js, is by using the fs.​existsSync() method: const fs = require('fs') const path = '. Note that fs.exists() is deprecated, but fs.existsSync() is not. (The callback parameter to fs.exists() accepts parameters that are inconsistent with other Node.js callbacks. fs.existsSync() does not use a callback.) So you can safely use fs.existsSync() to synchronously check if a file exists.


How to check if a file exists in Node.js, You may have a small script that generates a download link whose URL points to a file that was generated only moments ago. Your server might be running a  Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. How to check if page exists using JavaScript


Checking If A File Exists, One among those is data validation, which gives solution to check whether a Upwork offers experienced, remote talent to help steady your business during this challenging time. How does web browser read web code (HTML, CSS and JS)? Has a nice javascript function to run code if image exists and run other code if  Check if it has any external dependencies; Install external dependencies (using npm install, for example) Use node script.js to execute it; This is too much of work, especially if you want to get started quickly. So, introducing run-url: an open-source npm remote URL runner written in TypeScript.


How do detect if an image URL s isn't able to load in browser side , Node.js Checking if a file or a directory exists. Example#. Asynchronously#. var fs = require('fs'); fs.stat('path/to/file', function(err) { if (!err) { console.log('file or  Hi everyone, I am trying to figure out a way to ssh to remote server and check if file exists, and if it doesn't I want to leave the script with an exit status of 5. I have the following that I am attempting to use, but it is not returning anything: check() { ssh ${SOURCE_SERV} "ls -l