Re: pvxs Access/list problem

["Heinz Junkes \(FHI\) via Tech-talk" <tech-talk@aps.anl.gov>]

Yes, that happens. The UDP stops when I send a few bytes via TCP:


rtems@rtems-dev:~/MVME6100_7/EPICS/FHI/myExample$ telnet 141.14.128.12 5075
Trying 141.14.128.12...
Connected to 141.14.128.12.
Escape character is '^]'.
����	anonymousca
ghdfghgdfhdf
gdfhgdfhjgfd
dfgjdfg


...
2025-11-19T12:26:49.620682453 DEBUG pvxs.udp.io UDP Rx 110, 141.14.135.182:39511 -> 141.14.128.12:5076 @1 (0.0.0.0:5076) : orig 0
2025-11-19T12:26:50.172030918 DEBUG pvxs.udp.io UDP 0x191cab8 event 2
0000 : CA028003 0000057B 00000013 00000000
0010 : 00000000 00000000 0000FFFF 00000000
0020 : D0F70103 74637000 2B000000 021B4648
0030 : 4946454C 3A524644 6174613A 5348425F
...
2025-11-19T12:26:50.172081378 DEBUG pvxs.udp.io UDP Rx 1411, 141.14.135.181:53495 -> 141.14.128.12:5076 @1 (0.0.0.0:5076) : orig 0
0000 : CA028003 0000019D 00000013 00000000
0010 : 00000000 00000000 0000FFFF 00000000
0020 : D0F70103 74637000 0C000000 07194648
0030 : 4946454C 3A524644 6174613A 5348425F
...
2025-11-19T12:26:50.172251628 DEBUG pvxs.udp.

Heinz

> On 19. Nov 2025, at 03:26, Michael Davidsaver <mdavidsaver@gmail.com> wrote:
> 
> 
> If a TCP connection is the trigger, you could try to open a connection with eg. "telnet" or "netcat" and see if the UDP traffic stop coincides on TCP connect or disconnect?  Or maybe you have to send some bytes?