onData gets byteLength 0 sending a body stream

[tinchoz49]

Hi Community,

I was trying to do a request that streams content to the server and the onData is getting 0 bytes. Does anyone know what could be doing wrong?

this is the example code, thank you !

import sget from 'simple-get'
import stream from 'stream'
import uWS from 'uWebSockets.js'

const port = 9001

const app = uWS.App().post('/*', (res, req) => {
  console.log('Posted to ' + req.getUrl())
  res.onData((chunk, isLast) => {
    /* Buffer this anywhere you want to */
    console.log('Got chunk of data with length ' + chunk.byteLength + ', isLast: ' + isLast)

    /* We respond when we are done */
    if (isLast) {
      res.end('Thanks for the data!')
    }
  })

  res.onAborted(() => {
    /* Request was prematurely aborted, stop reading */
    console.log('Eh, okay. Thanks for nothing!')
  })
}).listen(port, (token) => {
  if (token) {
    console.log('Listening to port ' + port)

    let chunk = Buffer.alloc(1024)
    const largeStream = new stream.Readable({
      read () {
        this.push(chunk)
        chunk = null
      }
    })

    sget({
      method: 'POST',
      url: 'http://localhost:9001',
      body: largeStream
    }, (err, response, body) => {
      console.log(err)
      console.log(response.statusCode)
    })
  } else {
    console.log('Failed to listen to port ' + port)
  }
})

the results get:

Listening to port 9001
Posted to /
Got chunk of data with length 0, isLast: true
null
200

[uNetworkingAB]

That request is probably chunked. The server does not support it.

[e3dio]

You are Posting data with transfer-encoding: chunked by using that read stream which is not supported but also not necessary way to post data, you can use standard Post see #669 (comment)

@uNetworkingAB beat me to the answer :P

[tinchoz49]

Thank you everyone for the quick response 💯