Re: Anyone tried connecting a client to a local server on vxWorks 6.3?

[lorna.zhang@ni.com]

Setting EPICS_CA_ADDR_LIST=localhost
actually works!!

Thank you very much Ralph.

Lorna Zhang
National Instruments Shanghai
Tel: 86-21-50509810-3230

From:	Ralph Lange <Ralph.Lange@bessy.de>
To:	lorna.zhang@ni.com
Cc:	tech-talk@aps.anl.gov
Date:	11/19/2010 12:02 AM
Subject:	Re: Anyone tried connecting a client to a local server on vxWorks 6.3?

---

Actually, setting EPICS_CA_AUTO_ADDR_LIST=NO shuts off
the broadcast, so to connect to the local machine as well as use broadcasts
for all other machines on the local network, I would try to only set EPICS_CA_ADDR_LIST=localhost
(or the numeric equivalent).
That should allow your IOC to connect locally using the explicit destination,
as well as to other IOCs on the local net using broadcasts.

Ralph


On 18.11.2010 10:50, Mark Rivers wrote: 
Did you try setting EPICS_CA_AUTO_ADDR_LIST=NO,
EPICS_CA_ADDR_LIST=localhost, or the IP address of your vxWorks computer?
 
Mark

---

From: tech-talk-bounces@aps.anl.gov
[mailto:tech-talk-bounces@aps.anl.gov]
On Behalf Of lorna.zhang@ni.com
Sent: Wednesday, November 17, 2010 8:26 PM
To: tech-talk@aps.anl.gov
Subject: Anyone tried connecting a client to a local server on vxWorks
6.3?
 

Hi All, 

I posted several weeks ago about an issue that a client failed to connect
local server on vxWorks 6.3.

We developed a PCAS server and a client based on libcas and libca (EPICS
Base 3.14.9). They work well on Windows, and we are now porting them to
vxWorks (ppc-603). During the process, we found the issue that, if the
client and server are on a single host, the connection couldn't be established.

After debugging for a long while, we found the root issue is that a broadcast
to 255.255.255.255 from a vxWorks host CANNOT be heard by local host. It
seems like a loopback policy limitation for vxWorks.

So I'd like to know if there's anyone who ran into the same issue as I
am. Or someone who can successfully connect a client to a local server
on vxWorks, and how do you do that.

Thank you very much for your time.

Lorna Zhang
National Instruments Shanghai
Tel: 86-21-50509810-3230