How to let users download files node js

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Vue 3 Testing. Vue 3 Projects. Vue Testing. NativeScript Vue. Vue and D3. Top Vue Packages. Vue Ionic. Ant Design Vue. Chakra UI Vue. Nodejs Show sub menu. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Ask Question. Asked 8 years, 9 months ago. Active 8 years, 9 months ago. Viewed 4k times. I guess it is just a simple question but I can't solve it on my own.

How can I achieve my goal mentioned above? TorbenJ TorbenJ 4, 10 10 gold badges 41 41 silver badges 80 80 bronze badges. Got it to work: stackoverflow. Add a comment. Active Oldest Votes. If what you want is a static server for files check this: stackoverflow. Add a comment. Active Oldest Votes. Michelle Tilley Michelle Tilley k 39 39 gold badges silver badges bronze badges.

I got the following console output when I ran this script: node. Does this code close the file properly when the script ends or would it lose data? This depends upon the req url type if you are requesting https you must use https otherwise it will throw error. EthanKeiley why do you say that it isn't closed properly? By default createWriteStream will set autoClose to true and readable. Show 14 more comments. Don't forget to handle errors! The following code is based on Augusto Roman's answer.

But we don't check the result if cb cb err. Vince Yuan Vince Yuan VinceYuan the callback is confusing me. What would I place as the cb argument? Abdul Sounds like you are very new to node. Take a look at this tutorial: tutorialspoint. Abdul maybe it would be good if you share with the rest of the class what you have figured out? Is there a way to see the speed of the download? Show 7 more comments. Kelvin Omereshone 2 2 silver badges 11 11 bronze badges.

Abdul You specify the callback with a function only if you need to do something when the file has been successfully fetched. It would be good to check the status code before saving: response. But we don't check the result return cb err. Buzut Buzut 4, 4 4 gold badges 41 41 silver badges 50 50 bronze badges. The request module just works straight for HTTPs. S Ventura. It's more error prone without a doubt. Anyway, in any case where using request module is an option, I'd advise it as it's way higher level and thus, easier and efficient.

Alex, nope, this is an error message and there's a return. So if response. Thank you for showing example using request module.

Show 3 more comments. MikeL 5, 38 38 silver badges 41 41 bronze badges. Augusto Roman Augusto Roman 6 6 silver badges 4 4 bronze badges. What for are you storing request into a variable? You are right, there is no need to save the request, its not used anyway. That's what you mean? Yes, I think that's what polkovnikov. Per default the fs. Bjarke Pjedsted Bjarke Pjedsted 4 4 silver badges 8 8 bronze badges. Two comments on this: 1 it should probably reject Error objects, not strings, 2 fs.

This works great! No errors popped up but the. Removing the logic for the flag fixed it. Just wanted to point that out if someone had the issues with the approach. Is there a memory leak in this answer: stackoverflow. You can add timeout like I did in http. The memory leak is only if the file take too long to be downloaded.

Based on the other answers above and some subtle issues, here is my attempt. Check the file does not exist before hitting the network by using fs.

Only create the fs. This reduces the amount of fs. Even on a OK we can still possibly reject due to an EEXIST file already exists imagine another process created the file whilst we were doing network calls.

Recursively call download if you get a Moved Permanently or Found Moved Temporarily redirect following the link location provided in the header.