Is there a way of knowing if data is being piped into a express response?

Is there a way of knowing if data is being piped into a express response?

By : user2185308
Date : November 21 2020, 04:01 AM
This might help you if I have a Readable stream, I can pipe it to response like this: ,
There exists a pipe event for writeable streams:
code :
export async function myHandler(req, res) {
    const reader = getReadableStreamSomehow();

    res.on('pipe', src => {
        console.log('Something is piping into the response');
        assert.equal(src, reader);


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Redirect Express js piped (req.pipe) res properly

Redirect Express js piped (req.pipe) res properly

By : Alex Mugo
Date : March 29 2020, 07:55 AM
hope this fix your issue Probably I'm doing something wrong but: , I needed to use {folllowRedirect: false} option for reqest.js
Buffer a stream piped to res in node.js/express

Buffer a stream piped to res in node.js/express

By : rubylearner
Date : March 29 2020, 07:55 AM
hop of those help? I have a command I'm running for video streaming via ffmpeg, that basically pipes the response to res within express. , As long as you are node >=0.10 you can just do
code :
var args = ['-re','-i','/video.mkv','-loglevel','quiet','-r',24,'-threads',7,'-b:v','512k','-b:a','96k','-c:v','libx264','-c:a','libfdk_aac','-ar',22050,'-f','flv','pipe:1']
    , command = spawn('ffmpeg', args);

}, 3000);
How to return data response using express?

How to return data response using express?

By : Sobhan Bihan
Date : March 29 2020, 07:55 AM
will help you I am trying to run .get on a JSON file I've set up located at /scripts/src/data/*.json when I make the request I set the headers but I'm not sure how I actually return the resulting data or where I can view this request. Can someone offer any help? , You could use static middleware to serve your json files ,
code :
server.use(express.static(__dirname + "/scripts/src/data"))
//other routes 
Piping resized image to express response setting response header to 'Content-Length:0' and no data in response

Piping resized image to express response setting response header to 'Content-Length:0' and no data in response

By : Whale Chen
Date : March 29 2020, 07:55 AM
this one helps. Turns out that I had forgotten to add ImageMagick as a dependency for gm and this was causing an error. Strangely the error was not shown in the console and I found it only after breaking down the app into simpler pieces and debugging as skirtle mentioned in a comment above.
To fix I did the following:
code :
npm install --save imagemagick
const gm = require('gm').subClass({imageMagick: true});
Set filename for PDFKit piped to HTTP response

Set filename for PDFKit piped to HTTP response

By : Riks Patel
Date : March 29 2020, 07:55 AM
wish helps you I know this is a old thread but this answer may be helpful to some one I think.
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