[PD] connecting pd-gui to pd

[IOhannes m zmölnig]

On 09/10/2016 04:23 PM, Miller Puckette wrote:
> This might help (the subject line is confusing but I think this answers
> your question too :)
> 
> https://lists.puredata.info/pipermail/pd-list/2016-09/116052.html

actually, i think the answer is not entirely correct.

at least i'm pretty confident that it still works the same as it used to
back in - hm, hm - 2006 (and later), when we did the "peer data" thing.

what i did back then was:
use a proxy that listens to two different tcp/ip ports (say 8001 and
8002; with all messages that are received on one port being forwarded to
the other port - in both directions)

start Pd like "pd -guiport 8001" (so it uses the proxy as it's "GUI").
start Pd-gui like "pd-gui pdhost:8002" (so it uses the proxy as it's
"DSP" engine).

unfortunately the proxy needs a bit of magic built in, for all that to
work properly.
what i remember from back then:
- if you want to do some audio-configuration via the menu, the proxy
MUST record a few messages at the beginning of the session (after
connection to the DSP), when all the necessary data is sent to the GUI
- the proxy must store all the active window IDs, so when the pd-gui
connects anew, it can tell the DSP to redraw all the windows.
- i *think* the proxy needs to do a bit of handshake when connecting to
the DSP.
- for sanities reasons, it might make sense to disallow Ctrl-Q to
shut-down the DSP
- you might need to handle the watchdog events in the proxy (if running
with "-rt")

i also remember a bit of problems when using Pd-GUI on OSX (and we never
tried on W32), but i cannot remember the nature of these problems (and
bear in mind that the main objective of that project was to have
*multiple* GUIs talk to a single DSP)

mdgfdsa
IOhannes


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