Tools Json Formatter. We use cookies to improve your experience with the site. Close Privacy Overview This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website.
These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may have an effect on your browsing experience. Necessary Necessary. Non-necessary Non-necessary. To download files using curl in Node. We are using spawn instead of exec for the sake of convenience - spawn returns a stream with data event and doesn't have buffer size issue unlike exec. That doesn't mean exec is inferior to spawn ; in fact we will use exec to download files using wget.
The way data was written to the instance of fs. The only difference is that the data and end events are listened on the stdout object of spawn. Also we listen to spawn 's exit event to make note of any errors. Although it says downloading using wget , this example applies to downloading using curl with the -O option too. This method of downloading looks the most simple from coding point of view.
Why exec and not spawn? Because we just want wget to tell us if the work was done properly or not, we are not interested in buffers and streams. We are making wget do all the dirty work of making request, handling data, and saving the file for us.
As you might have guessed, this method is the fastest among the three methods I described. 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. 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.
Good news is that all major browsers have supported http2 since about - and Node as a client does too. Node, Nginx, and Apache offer it server side - so most use cases are covered.
Its a vast improvement. Thanks for the reply Rik — Neil. Without library it could be buggy just to point out. Here my suggestion: Call system tool like wget or curl use some tool like node-wget-promise which also very simple to use. Geng Jiawen Geng Jiawen 7, 2 2 gold badges 42 42 silver badges 36 36 bronze badges. Writing my own solution since the existing didn't fit my requirements. Alex Pilugin Alex Pilugin 2 2 gold badges 9 9 silver badges 30 30 bronze badges. Pankaj Pankaj 1 1 gold badge 3 3 silver badges 9 9 bronze badges.
Frankenmint Frankenmint 1, 1 1 gold badge 17 17 silver badges 30 30 bronze badges. Like: res. Jeremy M. Yin Yin 9. I suggest you to use res. Mehrzad Tejareh 4 4 silver badges 18 18 bronze badges. Vivek Narayan Vivek Narayan 1 1 1 bronze badge. Bugs 4, 9 9 gold badges 31 31 silver badges 40 40 bronze badges. Chandrakant Thakkar Chandrakant Thakkar 8 8 silver badges 21 21 bronze badges. Code dumps are generally not useful and may be downvoted or deleted. It would be worth editing to at least explain what the code is doing for future visitors.
Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast Who is building clouds for the independent developer?
Exploding turkeys and how not to thaw your frozen bird: Top turkey questions Featured on Meta.
0コメント