Re: pv Access setup

[Michael Davidsaver via Tech-talk <tech-talk at aps.anl.gov>]

On 4/18/21 10:07 AM, Дмитрий Прощенко via Tech-talk wrote:
> Hi all!
>  
> Im writting cpp program to drive a power supply. Use pv Access for connection. Also I created an IOC using makeBaseApp.pl on my Kubuntu and created bd for testing. And all is well. But using other OS whit IOC I found that my program is not working. pvget isnt working too. I was able tofind information on the need to use qsrv:
> myioc_LIBS += qsrv
> myioc_LIBS += pvAccessIOC
> myioc_DBD += PVASeerverRegister.dbd
> myioc_DBD += qsrv.dbd
>  
> executing pvasr on other OS:
> EPICS_PVAS_INTF_ADDR_LIST = 0.0.0.0:5075
> EPICS_PVAS_BEACON_ADDR_LIST = 127.255.255.255
> EPICS_PVAS_AUTO_BEACON_ADDR_LIST = NO
> ....

This looks correct.

> And pvget or pvput is not working anyway. I used pva2pva (QSRV / pvAccess Gateway) to know about qsrc. What documants shout I pay attention to? What should I fix to keep it working? I would like to use several IOCs, do I need to configure my addresses go them for correct operation?

Can you test with the softIocPVA executable and a simple database?
This should confirm if this is a network issue.

Also, can you confirm that caget also works?


> cat <<EOF > tick.db
> record(calc, "$(P=)cnt") {
>   field(INPA, "$(P=)cnt")
>   field(CALC, "A+1")
>   field(SCAN, "1 second")
> }
> EOF


> $ softIocPVA -d tick.db
> ...


> $ pvget -d cnt
> 2021-04-18T10:55:41.653 Creating datagram socket from: 0.0.0.0:45045.
> 2021-04-18T10:55:41.653 Broadcast address #0: 192.168.1.255:5076. (not unicast)
> 2021-04-18T10:55:41.653 Broadcast address #1: 192.168.210.255:5076. (not unicast)
> 2021-04-18T10:55:41.653 Setting up UDP for interface 192.168.1.68/255.255.255.0, broadcast 192.168.1.255, dest <none>.
> 2021-04-18T10:55:41.653 Creating datagram socket from: 192.168.1.68:5076.
> 2021-04-18T10:55:41.653 Creating datagram socket from: 192.168.1.255:5076.
> 2021-04-18T10:55:41.653 Setting up UDP for interface 192.168.210.1/255.255.255.0, broadcast 192.168.210.255, dest <none>.
> 2021-04-18T10:55:41.653 Creating datagram socket from: 192.168.210.1:5076.
> 2021-04-18T10:55:41.653 Creating datagram socket from: 192.168.210.255:5076.
> 2021-04-18T10:55:41.653 Creating datagram socket from: 224.0.0.128:5076.
> 2021-04-18T10:55:41.653 Local multicast enabled on 127.0.0.1/224.0.0.128:5076.
> 2021-04-18T10:55:41.653 Sending 49 bytes 0.0.0.0:45045 -> 192.168.1.255:5076.
> 2021-04-18T10:55:41.653 Socket sendto to 192.168.1.255:5076 error: Operation not permitted.
> 2021-04-18T10:55:41.653 Sending 49 bytes 0.0.0.0:45045 -> 192.168.210.255:5076.
> 2021-04-18T10:55:41.653 UDP Client Rx (49) 192.168.210.255:5076 <- 192.168.210.1:45045
> Waiting...
> 2021-04-18T10:55:41.654 UDP Client Rx (53) 0.0.0.0:45045 <- 192.168.210.1:58034
> 2021-04-18T10:55:41.654 Connecting to PVA server: 192.168.210.1:41685.
> 2021-04-18T10:55:41.654 Opening socket to PVA server 192.168.210.1:41685, attempt 1.
> 2021-04-18T10:55:41.654 Socket connected to PVA server: 192.168.210.1:41685.
> 2021-04-18T10:55:41.654 Acquiring transport to 192.168.210.1:41685.
> 2021-04-18T10:55:41.655 Connected to PVA server: 192.168.210.1:41685.
> cnt 2021-04-18 10:55:40.828  38 
> 2021-04-18T10:55:41.655 Releasing TCP transport to 192.168.210.1:41685.
> 2021-04-18T10:55:41.655 TCP socket to 192.168.210.1:41685 is to be closed.
> 2021-04-18T10:55:41.655 UDP socket 0.0.0.0:0 closed.
> 2021-04-18T10:55:41.655 UDP Client Rx (0) 0.0.0.0:45045 <- 192.168.210.1:58034
> 2021-04-18T10:55:41.655 UDP socket 192.168.1.68:5076 closed.
> 2021-04-18T10:55:41.655 UDP Client Rx (0) 192.168.1.68:5076 <- <Ukn Addr Type>
> 2021-04-18T10:55:41.655 UDP socket 192.168.1.255:5076 closed.
> 2021-04-18T10:55:41.655 UDP Client Rx (0) 192.168.1.255:5076 <- <Ukn Addr Type>
> 2021-04-18T10:55:41.655 UDP socket 192.168.210.1:5076 closed.
> 2021-04-18T10:55:41.655 UDP Client Rx (0) 192.168.210.1:5076 <- <Ukn Addr Type>
> 2021-04-18T10:55:41.655 UDP socket 192.168.210.255:5076 closed.
> 2021-04-18T10:55:41.655 UDP Client Rx (0) 192.168.210.255:5076 <- 192.168.210.1:45045
> 2021-04-18T10:55:41.655 UDP socket 224.0.0.128:5076 closed.
> 2021-04-18T10:55:41.655 UDP Client Rx (0) 224.0.0.128:5076 <- <Ukn Addr Type>
> Done