From Pharo, fork a shell to run something like ���env > /top/emphatic.txt���. Or capture studio in Pharo, instead of writing to a temp file. It could be that a fork���ed shell has a different environment than used by FFI. In that case the env vars may already be available through methods in the image.��

For the env that runs Bonjour successfully, run the ���env��� somewhere in the script that starts that server. Again, it is possible to have different environments, but most likely the environment is inherited, so is the same. HTH

On Sun, May 15, 2022 at 6:23 PM Stewart MacLean <stewart@xtra.co.nz> wrote:
Thanks for this suggestion Yanni.

When you say "dump the environment variables", how do you go about doing that?

Cheers,

Stewart

On Mon, May 16, 2022 at 9:18 AM Yanni Chiu <yannix7db@gmail.com> wrote:
One thing I usually try in these situations is to dump the environment variables, then sort and compare for clues as to why one way works but not the other.

On Sun, May 15, 2022 at 4:37 PM Stewart MacLean <stewart@xtra.co.nz> wrote:
Hi Jesus,

Thank you for giving it a go!

This is pretty much what I have been experiencing - all very difficult to troubleshoot unless you really know what you're doing at this level. Which I don't!

Thanks again!

Stewart

On Mon, May 16, 2022 at 2:41 AM Jesus Mari Aguirre <jmariaguirre@gmail.com> wrote:
sorry... I can not!

On Sun, May 15, 2022 at 4:40 PM Jesus Mari Aguirre <jmariaguirre@gmail.com> wrote:
I've been trying to help but I can make it work, so sorry...
I changed sdRef by several options (you have an ExternalAddress, firstly I changed by DNSServiceRef externalNew pointer, and getHandle but nothing changed)
Pharo gets hanged after the execution of the first callback defined��at #browseServicesOf:
Captura de pantalla 2022-05-15 a las 16.30.44.png

I've tried to modify the signature to return void (end remove the last nil inside the callback block)
Captura de pantalla 2022-05-15 a las 16.30.29.png

Pharo dies executing the primitive primCallcackReturn

Captura de pantalla 2022-05-15 a las 16.27.35.png

I hope it helps you in any way


On Sun, May 15, 2022 at 2:52 AM Stewart MacLean <stewart@xtra.co.nz> wrote:
Hi Esteban,

That is a very good point!��

Please see��https://github.com/StewMacLean/Bonjour/blob/master/README.md for version two of the readme that includes some screenshots etc.

If anyone can make this work, you can! (Thanks again for the Pango api help).��

I'm so curious as to what the problem is. I've tried all sorts of combinations!

Cheers,

Stew

On Wed, May 11, 2022 at 8:52 PM Esteban Lorenzano <estebanlm@netc.eu> wrote:
Hi, Steward,

I do not have my mac around right now, but...
it would help if you put also some code on how you expect the thing to work and what you expect to happen :)

Esteban

On May 11 2022, at 3:38 am, Stewart MacLean <stewart@xtra.co.nz> wrote:
Ok, after bashing my head against the Spinning Wheel of Death for ages trying to use FFI to interface to the Bonjour service discovery library, I've done it another way using essentially the same design framework, but scraping the command line output from dns-sd with the help of OSSubProcess. This is on a MacOS/M1/Monterey, Pharo 10 setup.

This works nicely, but I would still like to get to the bottom of why the FFI doesn't work for this. So I've made all the code available on https://github.com/StewMacLean/Bonjour. You can either download a preloaded image/changes or use Metacello to download and install into a fresh P10 image.

Once downloaded, it will select the openApp for the command line interface to run. To run the library interface you need to do the same thing, in that class - please refer to the read me and browse the code.

I'd really appreciate any help I can get to get this working. I think it would make a great demonstration app for FFI usage once running. Please sing out with any questions etc.��

Thanks!

Stew MacLean