[CM] How to send udp bundles from Grace on Linux?

[Taube, Heinrich K]

many years ago i  had a connection to realtime csound using the juce InterprocessConnection class https://docs.juce.com/master/classInterprocessConnection.html.  Its not in the code base anymore (no one ever used it) but thats the way i would do it.


On Mar 5, 2020, at 8:16 PM, Forrest Curo <treegestalt at gmail.com<mailto:treegestalt at gmail.com>> wrote:

Um, a more graceful possibility:

Adapt the c++ code from the Csound Api examples. Simply run instances of csound within Grace.

(?)

On Thu, Mar 5, 2020 at 6:05 PM Forrest Curo <treegestalt at gmail.com<mailto:treegestalt at gmail.com>> wrote:
Grace is sending valid osc messages.

If these were going to Supercollider, that's how they'd be handled.

Received by the csound udp server, valid osc is not valid realtime score events.

Since JUCE is largely a C++ compiler... I should be able to #include<system.h> and add code to either write csound score lines to a fifo, or call bash's 'nc' to udp them to another computer. (?)

Those approaches wouldn't be graceful, but they are ways I could (eventually) do it for myself.





On Thu, Mar 5, 2020 at 5:12 PM Taube, Heinrich K <taube at illinois.edu<mailto:taube at illinois.edu>> wrote:
im pretty sure grace is sending valid osc messages, i cant tell what going on from the information you are giving me

On Mar 5, 2020, at 6:14 PM, Forrest Curo <treegestalt at gmail.com<mailto:treegestalt at gmail.com>> wrote:

Put in a header; csound objects.
Leave it out; Grace calls an error.

On Thu, Mar 5, 2020 at 3:53 PM Forrest Curo <treegestalt at gmail.com<mailto:treegestalt at gmail.com>> wrote:
Supercollider is set up to accept udp formatted as OSC messages.

Csound 'expects' score events instead. I'd know how to format these if I knew how to specify a string and send it from, Grace.

On Thu, Mar 5, 2020 at 3:24 PM Forrest Curo <treegestalt at gmail.com<mailto:treegestalt at gmail.com>> wrote:
cm says "OSC send test succeeded"
& csound says:
error: syntax error, unexpected '/'  (token "/") line 7:
>>>/ <<<
Parsing failed due to invalid input!
Stopping on parser failure



On Thu, Mar 5, 2020 at 3:17 PM Forrest Curo <treegestalt at gmail.com<mailto:treegestalt at gmail.com>> wrote:
syntax for sending a string to a port?

On Thu, Mar 5, 2020 at 2:27 PM Taube, Heinrich K <taube at illinois.edu<mailto:taube at illinois.edu>> wrote:
You should be able to send OSC to any port you want,  look in the Audio menu for the OSC Connections… command.
I haven’t tested OSC yet on this release...

On Mar 5, 2020, at 4:18 PM, Forrest Curo <treegestalt at gmail.com<mailto:treegestalt at gmail.com>> wrote:

I have csound running & set to receive udp  (i.e.  --port=4567 )

( https://csound.com/docs/manual/udpserver.html )

I can send lines it lines for immediate output from pure data:
[send scoreline_i "i 2 0 3 440 .5" (
|
[netsend -u ]

likewise channel values:

[send @valu 330 (
|
[netsend -u ]

but in Grace the OSC examples are based on sending to an established TCP connection to Supercollider.

What to do?



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