Hi, I finished the challenged and it is working ok when I test it, but it is not passing the official testing. Any help, please? Your project link(s) solution: https://replit.com/@ranran2121/boilerplate-project-urlshortener Your browser information: User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.212 Safari/537.36 Challenge: URL Shortener Microservice Link to the challenge: [image] freeCodeCamp.org Learn to Code — For Free

Hello there, This is a common issue: var urlDns= url.split('//')[1]; dns.lookup(urlDns, (err) => { The first argument for dns.lookup is expected to be only the hostname. Hope this helps

you mean without the “www”?

Without most of it :wink: https://www.freecodecamp.org/learn/some-other-route/ | hostname | Remember to test your app with some weird URLs. Also, if you are completely stuck, look in the network tab of the devtools to see what requests the tests are making, and what url they are testing with. Hope this clarifies

[image] Sky020: Also, if you are completely stuck, look in the network tab of the devtools to see what requests the tests are making, and what url they are testing with. i am afraid this is not clear at all, but I would lolve to understand it in order to see what url I am testing ^-^

Sure, I will make a quick guide of how I debug this. However, your app appears to have crashed - cannot start it.

that’s weid because it works for me (that is what I get when I submit the htts://www.freecodecamp.com) [image] and few minutes ago it was working when I was pasting “/+the url id” but my laptop and connections are crap :frowning:

Steps: Open devtools (differs from browser to browser - search how to for yours) Navigate to the network tab Submit your project link You should see this: [image] Click on a request (probably makes sense to see the one that failed - red): [image] Look at the Form Data (bottom right) - that is being passed by the freeCodeCamp tests in a request to your app. At this stage in the curriculum (and your web development journey), the devtools should be your best friend. There are many excellent YouTube videos going over how best to use it, and I highly recommend you watch some of them. They immensely help me. Hope this helps

[image] Sky020: At this stage in the curriculum (and your web development journey), the devtools should be your best friend. There are many excellent YouTube videos going over how best to use it, and I highly recommend you watch some of them. They immensely help me. is it a nice way to tell me I am a complete idiot? well, at this point of the curriculum I can’t remember much of any hint about development tools. So far I had to browse other tutorials since from React onwards I struggled and online there is just TOO MUCH and it is easy to get totally lost, as I am . (btw, sometimes it is just a language matter, since most of us are not english native speakers). And sometimes the hints are confusing, like this: " you can POST a URL to /api/shorturl and get a JSON response with original_url and short_url properties. Here’s an example: { original_url : '**https://freeCodeCamp.org**', short_url : 1}" whereas the json object in the example project is {"original_url":"*https://www.freecodecamp.com*","short_url":56} going back to the challenge, in the "post " trunk, a part from the this ftp:/etc that should be recognized as an invalid one by DSN (I am going to fix this) it looks like working ( I mean, it is not crashing the app). But what about inputs like "http://www.imontagnini.it/monte-greco"… does the challenge want also this type of input? for the “get” part, if I replace the res.redirect(data.url) with res.json(data.url) I can see the correct url to redirect to ("http://www.imontagnini.it"). However the app crashes if I use res.redirect(data.url) So for my understanding the problem is not the string for the DSN testing but the “post” part… but probably I am too stupid for this…

[image] francesca.giammichel: is it a nice way to tell me I am a complete idiot? Not at all. Sorry, for any misunderstanding. All I meant to say is this is the perfect time to get to know the devtools. There is not necessarily any expectation for anyone following the curriculum to use/know it, but, in my experience, it helped me get through. As such, I recommend it.

[image] francesca.giammichel: what about inputs like "http://www.imontagnini.it/monte-greco" … does the challenge want also this type of input? The app should work like a simple URL Shortener. So, the tests might not test for every permutation of URL, but there is somewhat of an expectation (from an end user’s perspective) how this microservice might work. That is: I (the user) pass in a URL I want shortened I get a response telling me what that shortened version is I pass in the shortened version, and am redirected to what I originally passed in [image] francesca.giammichel: So for my understanding the problem is not the string for the DSN testing but the “post” part… let completeUrl = Url.findById(urlID, (err, data)=> { if (err) { console.log("error" +urlID); res.json({error :"invalid url"}); } //res.json(data.url); res.redirect(data.url); }) Here are some notes on this section of code: I am not sure why it is assigning anything to completeUrl as completeUrl does not get used. If you encounter an error (err), you respond with an error - this makes sense. However, the callback function is not returned from. So, even if there is an error, res.redirect(data.url) is called. And, as there is an error (err), data is undefined. So, data.url crashes the app. Hope this helps

My URL shortener microservice not working: help, please

Curriculum Help

francesca.giammichel June 3, 2021, 9:01am 20

i will definitely consider your code for future needs…
at the moment I have an issue with the find() methods in DB and I opened a new post, may i ask you to have a look and help me there, too?
this is the link to the post

Thank you

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