Hi,

I created an example to try out how it is possible to have interactive Csound 
session over internet. It uses Google Chrome pnacl technology for csound and 
websockets for communication.

Go to address http://tarmo.uuu.ee/varia/failid/cs/nacl/fm-game.html
to try it out. I attach the code of client (html), csd and server code 
(python).

In this example "play" events are sent to all clients who are connected to the 
server at the same time. So the same sound is heard almost in the same time  
by all players -  so you can have a worldwide musical communication already!  
:)

It would be even more interesting to send also compileOrc messages or 
interchange channel values, but that's for future.

Websockets is a new technoly that came with html5. It is basically a layer on 
top of TCP for bidirectioal communication but easier to use. 

Basically client (fm-game.html) connects to the ws-server on given address, 
loads Csound module and csd. Server takes care of the connections and sends 
all incoming "PLAY" events to all clients (expect sender) that evoke  then the 
csound event also on their side.

The websocket server is written in python using Tornado module 
http://www.tornadoweb.org/en/stable/ but there are implementations of 
websockets in most languages already (for example new Qt 5.3 includes a 
websocket library by default).

The server sits in my home computer since I could not run  it in the 
tarmo.uuu.ee server. I will keep it running for some days, but then I have to 
leave and I will switch out the computer.

Please try it out, it can be fun!

I believe there is a lot of potential in such solutions -  if everybody has 
the same orchestra, it is SO much cheaper and faster to send just the data and 
commands that to stream audio...

Please ask questions or comment if there is something vary vague!

best!
tarmo

Hi,

John let me know that there was some malware warning due to attachments of the 
previous mail and probably it was not forwardesd to many.

here it is again, the attachments (fm-game.html, fm-game.csd and websocket-
server.py are all up on: http://tarmo.uuu.ee/varia/failid/cs/nacl/

Thanks!
tarmo

---------------

On Friday 23 May 2014 01:31:28 Tarmo Johannes wrote:

Hi,
 
I created an example to try out how it is possible to have interactive
Csound session over internet. It uses Google Chrome pnacl technology for
csound and websockets for communication.
 
Go to address http://tarmo.uuu.ee/varia/failid/cs/nacl/fm-game.html
to try it out. I attach the code of client (html), csd and server code
(python).
 
In this example "play" events are sent to all clients who are connected to
the server at the same time. So the same sound is heard almost in the same
time by all players -  so you can have a worldwide musical communication
already!
:)
 
It would be even more interesting to send also compileOrc messages or
interchange channel values, but that's for future.
 
Websockets is a new technoly that came with html5. It is basically a layer
on top of TCP for bidirectioal communication but easier to use.
 
Basically client (fm-game.html) connects to the ws-server on given address,
loads Csound module and csd. Server takes care of the connections and sends
all incoming "PLAY" events to all clients (expect sender) that evoke  then
the csound event also on their side.
 
The websocket server is written in python using Tornado module
http://www.tornadoweb.org/en/stable/ but there are implementations of
websockets in most languages already (for example new Qt 5.3 includes a
websocket library by default).
 
The server sits in my home computer since I could not run  it in the
tarmo.uuu.ee server. I will keep it running for some days, but then I have
to leave and I will switch out the computer.
 
Please try it out, it can be fun!
 
I believe there is a lot of potential in such solutions -  if everybody has
the same orchestra, it is SO much cheaper and faster to send just the data
and commands that to stream audio...
 
Please ask questions or comment if there is something vary vague!
 
best!
tarmo