Download a file node

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How to download a file using NodeJS without any extra package Download a file to your filesystem using NodeJS without any extra package Posted on June 26, You can download a file an image, a text, or any kind of file and save it to your filesystem using NodeJS built-in https and fs module.

The source code at the end of this post will cover all of APIs including upload files. You can find the complete source code for this tutorial on Github. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.

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.

The issue with some of the other answers recursively calling download was that they called resolve download instead of download This way the nested chain of promises resolve in the correct order. It might seem cool to clean up the temp file asynchronously, but I chose to reject only after that completed too so I know that everything start to finish is done when this promise resolves or rejects.

Josh Peak Josh Peak 4, 4 4 gold badges 33 33 silver badges 48 48 bronze badges. You shouldn't waste resources doing the download if the destination file already exists. Do the check first if possible. Phil Really good point. I have updated the example with an earlier guard check before falling into the recursive networking calls but left the success file handling code the same.

This short circuit guard statement should save some time in this case now. Vince Yuan's code is great but it seems to be something wrong. But we don't check the result if callback callback err. Feel Physics Feel Physics 2, 4 4 gold badges 23 23 silver badges 36 36 bronze badges.

I prefer request because you can use both http and https with it. Looks like Request has been deprecated github. No new changes are expected to land. In fact, none have landed for some time. Wai Ha Lee 7, 61 61 gold badges 56 56 silver badges 85 85 bronze badges. Idan Dagan Idan Dagan 7, 3 3 gold badges 28 28 silver badges 38 38 bronze badges.

Roman Podlinov Roman Podlinov Very clean, thank you. What do the flags 'wx' do when you're creating the writeStream? It is returning garbage character if file name is other than ascii like if filename is in japanese. Do you think ajax-request is not a third party library? Download using promise, which resolve a readable stream.

The questions was specific to not include third party modes : — David Gatti. If you are using express use res. A 13k 4 4 gold badges 90 90 silver badges bronze badges. Using the http2 Module I saw answers using the http , https , and request modules. I'd like to add one using yet another native NodeJS module that supports either the http or https protocol: Solution I've referenced the official NodeJS API, as well as some of the other answers on this question for something I'm doing.

Rik Rik 3 3 silver badges 8 8 bronze badges. Is this backward compatible? Works everywhere or only for http2? Neil I'm assuming you are asking if http2 is backward compatible with http1. Because http2 improves framing; adding binary compression, the ability to push from server to client, and simultaneous connections - it is absolutely required that both server and client know the implementation this allows abstraction of implementation from the application too.

Here, I give the uploads directory to all download files. This get the all files that contains uploads folder. But how to show it in the table for downloads. And after that create the global.

Step 8 Download Code. This step to create the download file. This is the simple get the file and use res. Now run the application by the node app. Now click on the upload button it redirect in the upload route and give message successfully uploaded. I hope that this article is helpful for you. Even if my file get uploaded, I can't see the file in the main page.

Could you help? I've follow all the steps and I can't see why this is happening. First of all Thank you for explaining it is a nice way. I have a project where i have bulk upload of files Currently it is done by drag and drop of bunch of files into a HTML5 uploader and as it has to hit the IIS web server. Its taking time at the same time other windows application that dont use server is much quicker. So how can i solve this issue of performance