I've been able to get it working. Unfortunately I don't really know what the problem was. There was a timing issue but I don't think that is the whole story. Anyway, I can now send the <getProperties version="1.7"> string and get the appropriate response back in software.
Thanks for thinking with me.

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I seem to be able to connect with nc:

$ nc pizero.local 7624 -vz
nc -vz pizero.local 7624
nc: connectx to pizero.local port 7624 (tcp) failed: Connection refused
nc: connectx to pizero.local port 7624 (tcp) failed: Connection refused
Connection to pizero.local port 7624 [tcp/indi] succeeded!

As you can see, the connection is first refused twice and succeeds the third time.
If I try to connect from software, the connection gets refused (TCP error 61).

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Yes, I was able to do all that. My problem is that I cannot connect using sockets from my own program.
I get a permission denied error back so that might mean that the port is not open. But then why am I able to connect using kStars?
I assume that no authentication is needed?

Thanks

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Hi,

I'm trying to connect to a INDIServer that runs on my Raspberry pi zero W on the default port from software (Swift on Mac OS).
Unfortunately I am not that familiar with socket programming so my question might be somewhat basic.
What kind of socket (or what kind of protocol) do I need to connect to the INDI server. I've tried TCP and HTTP sockets, but they do not seem to work. I get a permission denied error. At first I'm just trying to send <getProperties version="1.7"/> to the server.

I am able to connect to the server from kStars running on my Mac.

Thanks,
Don

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