In my configuration, udp sending (netsend -u)  from a linux machine to macOSX machine on a local ethernet network, I experienced that the  udp connection closed when trying to send data if the dest port was not reachable on target machine. Jean-Yves

On 27/03/2019 12:00, pd-dev-request@lists.iem.at wrote:

Message: 2 Date: Tue, 26 Mar 2019 09:52:33 -0700 From: Miller Puckettemsp@ucsd.edu To: Dan Wilcoxdanomatika@gmail.com Cc: Christof Ressichristof.ressi@gmx.at, pd-dev pd-dev@lists.iem.at Subject: Re: [PD-dev] netsend/netreceive UDP ignore ECONNREFUSED Message-ID:20190326165233.GE27681@ucsd.edu Content-Type: text/plain; charset=us-ascii

Incidentally, I get the same behavior (send fails if to a nonexistent local port, but keeps trying if non-local) on linux.

cheers Miller

On Tue, Mar 26, 2019 at 05:41:58PM +0100, Dan Wilcox wrote:

...

That's good to know.

I think I have this working. I will do some cleanup and a push, then you can test.

...

On Mar 26, 2019, at 4:43 AM, Christof Ressichristof.ressi@gmx.at wrote:

sorry for spamming the list today. @Dan you have probably read this already:https://stackoverflow.com/questions/41231270/econnrefused-errors-on-udp-send...

turns out that at least on my system (Windows 7) [netsend -u] only closes the socket when sending to a non-reachable port on*localhost*. sending to any other (existing or non-existing) host won't close the socket. this means that there's even less reason to consider this a feature and I'm not sure if there are really any patches out there which depend on this behaviour.

Christof

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