Node.js request download file

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.

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? It is mandatory to procure user consent prior to running these cookies on your website.

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The example below will download the image from the first argument as save it as image. Sometimes, you may need to download multiple files and save them into your system. The download package allows you to download multiple images and save them under a folder as shown below:. The code above saves both default. Check out download NPM page for more information. I'm sending out an occasional email with the latest programming tutorials. Now, inspect that request and check what are the actual Request Headers of the request and make sure they are in sync with your headers from your code.

Do not forget to set the Cookie header or the Authorization Tokens if you are dealing with content only accessible to logged in users. You can easily do this by adding another parameter in the headers object just like this. Lets end this with an overall recap of what is happening with this snippet and how it is working step by step.