Re: [nodejs] use nodejs as streaming server

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Tim Caswell

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Sep 20, 2012, 11:54:05 AM9/20/12

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I would start by reading up on audio encoding formats. This alone is
a pretty complex topic. Also, what is you client, what capabilities
does it have? If the client is a browser that's very different than
say a native mobile client on iOS. As far as the node part, building
a simple data proxy is easy, but usually you want to do more.

On Wed, Sep 19, 2012 at 11:19 PM, Chi Linh Le <lcli...@gmail.com> wrote:
> Hi All
>
> I am building a app with push-to-talk (conference call) function.
> Model of app as below.
>
> client A--(voice data)--->server (nodejs)--(voice data)--->client B
>
> I have some question.
>
> 1. How do get voice data from client?
> 2. How do send voice data to all connected client?
>
> Anyhelp is appreciated!
>
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Chi Linh Le

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Sep 21, 2012, 3:27:11 AM9/21/12

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Thank for responding.

Assume that client is android.

I can reading voice data from device, and sent to nodejs server.

nodejs server use datagram library to receive voice data which is sent from device.

Now, i can't find solution to send received voice data to all connected clients.

Here is some code on server side

///////////////////////////////////////////////////////////////////////////////////////////

var http = require('http'),

dgram = require('dgram'),

socketio = require('socket.io');

var app = http.createServer(handleRequest),

io = socketio.listen(app),

socket = dgram.createSocket('udp4');

socket.on('message', function(content, rinfo) {

console.log('got message', content, 'from', rinfo.address, 'port ',rinfo.port);

io.sockets.emit('udp_message', 'test',rinfo.port);

socket.send(content, 0, content.length, 50006, rinfo.address, function(err, bytes) {

//socket.close();

});

function handleRequest(req, res) {

res.writeHead(200, {'content-type': 'text/html'});

res.end("<!doctype html> \

<html><head> \

<script> \

var socket = io.connect('localhost', {port: 8000}); \

socket.on('udp message', function(message) { console.log(message) }); \

</script></head></html>");

}

socket.bind(50005);

app.listen(8000);

///////////////////////////////////////////////////////////////////////////////////////////

I am waiting for your respons.