Experimental Physics and
Industrial Control System

Ralph Lange <[email protected]> · Tue, 26 May 2009 11:15:39 +0200

Hello Bruno,

as Channel Access is based on the PV name as unique identifier and quite

completely hides distribution of PVs onto multiple servers, you will

have to peek into the CA internals to find out.

Try the "casw" commandline utility with a high interest level. It will

print all incoming CA beacons, which contain host and port of the CA

server sending the beacon. Let it run for a while and filter the output:

there's your list.

Note that, even as you know the server names, you can't "talk" to them

directly through CA, unless your conventions enforce PVs with well-known

names that every server in your system has to serve.

The Channel Access manuals will have more details on casw.

Good luck!
Ralph

On 25.05.2009 23:33 Bruno Coudoin wrote:

Hi,

Is there a way to get the list of all the participants on an epics

network, especially the servers.

The use case is that I would like to be able to 'talk' to each of the
servers of my Epics network but how to know who is participating?

Thanks,

Bruno.