How to send ArrayBuffer in json from js client to nodejs server?

Question

I am trying to send data of type ArrayBuffer in json to my server using socket.io like this:

socket.emit('record', {
       name: myUsername + '.wav',
       data: data //arraybuffer
 });

On server side, when i receive 'record' event in socket, I get the data from JSON and save it in name file like this:

socket.on('record', function(message){
      var fileWriter = new wav.FileWriter(message.name, {
        channels: 1,
        sampleRate: 48000,
        bitDepth: 16
        });
      message.data.pipe(fileWriter);
    });

I am using require('wav') & require('stream') package from npm. The problem is that my server crashes on message.data.pipe(fileWriter); with this error:

TypeError: message.data.pipe is not a function

What am I doing wrong? Can't i send ArrayBuffer like this in socket.io?

Call .pipe() chained to the stream instance, not the ArrayBuffer message.data — guest271314

guest271314 guest271314 · Accepted Answer · 2017-08-12T20:38:04

data is an ArrayBuffer, not a ReadableStream. Enqueue data to be read by a ReadableStream, passed to a WritableStream or TransformStream, for example using .pipeThrough(), see Receiving data via stdin and storing as a variable/array.

How to send ArrayBuffer in json from js client to nodejs server?

1 Answers