And now a 3.13.10 IOC connecting to a 3.14.12 IOC:
CAS: cast server msg of 16 bytes from addr 172.20.3.200:54015
CAS: Request from 172.20.3.200:54015 => cmmd=13 cid=0x0 type=0 count=5064 postsize=0
CAS: Request from 172.20.3.200:54015 => available=0x81810b32 N=1 paddr=(nil)
CAS: request from 172.20.3.200:54015 => invalid (damaged?) request code from UDP
CAS: Request from 172.20.3.200:54015 => cmmd=13 cid=0x0 type=0 count=5064 postsize=0
CAS: Request from 172.20.3.200:54015 => available=0x81810b32 N=0 paddr=(nil)
CAS: invalid (damaged?) UDP request from 172.20.3.200:54015 ?
CAS: message received at 2022-05-13 15:48:42
CAS: Sending a udp message of 16 bytes
CAS: cast server msg of 16 bytes from addr 172.20.3.200:54015
CAS: Request from 172.20.3.200:54015 => cmmd=13 cid=0x0 type=0 count=5064 postsize=0
CAS: Request from 172.20.3.200:54015 => available=0x81810b32 N=1 paddr=(nil)
CAS: request from 172.20.3.200:54015 => invalid (damaged?) request code from UDP
CAS: Request from 172.20.3.200:54015 => cmmd=13 cid=0x0 type=0 count=5064 postsize=0
CAS: Request from 172.20.3.200:54015 => available=0x81810b32 N=0 paddr=(nil)
CAS: invalid (damaged?) UDP request from 172.20.3.200:54015 ?
CAS: message received at 2022-05-13 15:48:42
CAS: Sending a udp message of 16 bytes
CAS: cast server msg of 32 bytes from addr 172.20.3.200:57086
CAS: Request from 172.20.3.200:57086 => cmmd=6 cid=0x0 type=5 count=8 postsize=16
CAS: Request from 172.20.3.200:57086 => available=0x0 N=1 paddr=(nil)
CAS: Sending a udp message of 40 bytes
CAS: cast server msg of 32 bytes from addr 172.20.3.200:57086
CAS: Request from 172.20.3.200:57086 => cmmd=6 cid=0x0 type=5 count=8 postsize=16
CAS: Request from 172.20.3.200:57086 => available=0x0 N=1 paddr=(nil)
CAS: Sending a udp message of 40 bytes
CAS: cast server msg of 16 bytes from addr 172.20.3.200:54015
CAS: Request from 172.20.3.200:54015 => cmmd=13 cid=0x0 type=0 count=5064 postsize=0
CAS: Request from 172.20.3.200:54015 => available=0x81810b32 N=1 paddr=(nil)
CAS: request from 172.20.3.200:54015 => invalid (damaged?) request code from UDP
CAS: Request from 172.20.3.200:54015 => cmmd=13 cid=0x0 type=0 count=5064 postsize=0
CAS: Request from 172.20.3.200:54015 => available=0x81810b32 N=0 paddr=(nil)
CAS: invalid (damaged?) UDP request from 172.20.3.200:54015 ?
CAS: message received at 2022-05-13 15:48:42
CAS: Sending a udp message of 16 bytes
CAS: conn req from 172.20.3.200:51232
CAS: Request from 172.20.3.200:51232 => cmmd=20 cid=0x0 type=0 count=0 postsize=8
CAS: Request from 172.20.3.200:51232 => available=0x0 N=1 paddr=(nil)
CAS: Request from 172.20.3.200:51232 => cmmd=21 cid=0x0 type=0 count=0 postsize=16
CAS: Request from 172.20.3.200:51232 => available=0x0 N=2 paddr=(nil)
CAS: Request from 172.20.3.200:51232 => cmmd=18 cid=0x0 type=0 count=0 postsize=16
CAS: Request from 172.20.3.200:51232 => available=0x8 N=3 paddr=(nil)
CAS: Sending a message of 48 bytes
CAS: Request from 172.20.3.200:51232 => cmmd=1 cid=0x0 type=20 count=1 postsize=16
CAS: Request from 172.20.3.200:51232 => available=0x0 N=1 paddr=0x7f3dd4010908
CAS: Sending a message of 40 bytes
CAS: cast server msg of 16 bytes from addr 172.20.3.200:54015
CAS: Request from 172.20.3.200:54015 => cmmd=13 cid=0x0 type=0 count=5064 postsize=0
CAS: Request from 172.20.3.200:54015 => available=0x81810b32 N=1 paddr=0x7f3dd4010908
CAS: request from 172.20.3.200:54015 => invalid (damaged?) request code from UDP
CAS: Request from 172.20.3.200:54015 => cmmd=13 cid=0x0 type=0 count=5064 postsize=0
CAS: Request from 172.20.3.200:54015 => available=0x81810b32 N=0 paddr=0x7f3dd4010908
CAS: invalid (damaged?) UDP request from 172.20.3.200:54015 ?
CAS: message received at 2022-05-13 15:48:42
CAS: Sending a udp message of 16 bytes
CAS: cast server msg of 16 bytes from addr 172.20.3.200:54015
CAS: Request from 172.20.3.200:54015 => cmmd=13 cid=0x0 type=0 count=5064 postsize=0
CAS: Request from 172.20.3.200:54015 => available=0x81810b32 N=1 paddr=0x7f3dd4010908
CAS: request from 172.20.3.200:54015 => invalid (damaged?) request code from UDP
CAS: Request from 172.20.3.200:54015 => cmmd=13 cid=0x0 type=0 count=5064 postsize=0
CAS: Request from 172.20.3.200:54015 => available=0x81810b32 N=0 paddr=0x7f3dd4010908
CAS: invalid (damaged?) UDP request from 172.20.3.200:54015 ?
CAS: message received at 2022-05-13 15:48:42
CAS: Sending a udp message of 16 bytes
CAS: cast server msg of 16 bytes from addr 172.20.3.200:54015
CAS: Request from 172.20.3.200:54015 => cmmd=13 cid=0x0 type=0 count=5064 postsize=0
CAS: Request from 172.20.3.200:54015 => available=0x81810b32 N=1 paddr=0x7f3dd4010908
CAS: request from 172.20.3.200:54015 => invalid (damaged?) request code from UDP
CAS: Request from 172.20.3.200:54015 => cmmd=13 cid=0x0 type=0 count=5064 postsize=0
CAS: Request from 172.20.3.200:54015 => available=0x81810b32 N=0 paddr=0x7f3dd4010908
CAS: invalid (damaged?) UDP request from 172.20.3.200:54015 ?
CAS: message received at 2022-05-13 15:48:42
CAS: Sending a udp message of 16 bytes
CAS: cast server msg of 16 bytes from addr 172.20.3.200:54015
CAS: Request from 172.20.3.200:54015 => cmmd=13 cid=0x0 type=0 count=5064 postsize=0
CAS: Request from 172.20.3.200:54015 => available=0x81810b32 N=1 paddr=0x7f3dd4010908
CAS: request from 172.20.3.200:54015 => invalid (damaged?) request code from UDP
CAS: Request from 172.20.3.200:54015 => cmmd=13 cid=0x0 type=0 count=5064 postsize=0
CAS: Request from 172.20.3.200:54015 => available=0x81810b32 N=0 paddr=0x7f3dd4010908
CAS: invalid (damaged?) UDP request from 172.20.3.200:54015 ?
CAS: message received at 2022-05-13 15:48:43
CAS: Sending a udp message of 16 bytes
CAS: cast server msg of 16 bytes from addr 172.20.3.200:54015
CAS: Request from 172.20.3.200:54015 => cmmd=13 cid=0x0 type=0 count=5064 postsize=0
CAS: Request from 172.20.3.200:54015 => available=0x81810b32 N=1 paddr=0x7f3dd4010908
CAS: request from 172.20.3.200:54015 => invalid (damaged?) request code from UDP
CAS: Request from 172.20.3.200:54015 => cmmd=13 cid=0x0 type=0 count=5064 postsize=0
CAS: Request from 172.20.3.200:54015 => available=0x81810b32 N=0 paddr=0x7f3dd4010908
CAS: invalid (damaged?) UDP request from 172.20.3.200:54015 ?
CAS: message received at 2022-05-13 15:48:44
CAS: Sending a udp message of 16 bytes
CAS: cast server msg of 16 bytes from addr 172.20.3.200:54015
CAS: Request from 172.20.3.200:54015 => cmmd=13 cid=0x0 type=0 count=5064 postsize=0
CAS: Request from 172.20.3.200:54015 => available=0x81810b32 N=1 paddr=0x7f3dd4010908
CAS: request from 172.20.3.200:54015 => invalid (damaged?) request code from UDP
CAS: Request from 172.20.3.200:54015 => cmmd=13 cid=0x0 type=0 count=5064 postsize=0
CAS: Request from 172.20.3.200:54015 => available=0x81810b32 N=0 paddr=0x7f3dd4010908
CAS: invalid (damaged?) UDP request from 172.20.3.200:54015 ?
CAS: message received at 2022-05-13 15:48:46
CAS: Sending a udp message of 16 bytes
CAS: cast server msg of 16 bytes from addr 172.20.3.200:54015
CAS: Request from 172.20.3.200:54015 => cmmd=13 cid=0x0 type=0 count=5064 postsize=0
CAS: Request from 172.20.3.200:54015 => available=0x81810b32 N=1 paddr=0x7f3dd4010908
CAS: request from 172.20.3.200:54015 => invalid (damaged?) request code from UDP
CAS: Request from 172.20.3.200:54015 => cmmd=13 cid=0x0 type=0 count=5064 postsize=0
CAS: Request from 172.20.3.200:54015 => available=0x81810b32 N=0 paddr=0x7f3dd4010908
CAS: invalid (damaged?) UDP request from 172.20.3.200:54015 ?
CAS: message received at 2022-05-13 15:48:50
CAS: Sending a udp message of 16 bytes
CAS: cast server msg of 16 bytes from addr 172.20.3.200:54015
CAS: Request from 172.20.3.200:54015 => cmmd=13 cid=0x0 type=0 count=5064 postsize=0
CAS: Request from 172.20.3.200:54015 => available=0x81810b32 N=1 paddr=0x7f3dd4010908
CAS: request from 172.20.3.200:54015 => invalid (damaged?) request code from UDP
CAS: Request from 172.20.3.200:54015 => cmmd=13 cid=0x0 type=0 count=5064 postsize=0
CAS: Request from 172.20.3.200:54015 => available=0x81810b32 N=0 paddr=0x7f3dd4010908
CAS: invalid (damaged?) UDP request from 172.20.3.200:54015 ?
CAS: message received at 2022-05-13 15:48:59
CAS: Sending a udp message of 16 bytes
Note the message "invalid (damaged?) UDP request". But connection is successful.
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https://bugs.launchpad.net/bugs/1971737
Title:
EPICS 3.13 clients cannot connect to EPICS 7 or 3.16
Status in EPICS Base:
New
Bug description:
Since commit 95fd255d "rsrv: ignore CA client version older than v4.4"
from Jul 30 2016, EPICS 3.13 clients cannot connect any more, even
though their CA version is V4.8.
The reason is that camessage drops the incoming CA_PROTO_SEARCH
messages because the 3.13 client has not yet sent a CA_PROTO_VERSION
message and thus the code reads client->minor_version_number as 0.
This is a huge hindrance for upgrading 3.14 IOCs to EPICS 7 when there
are still 3.13 IOC (which cannot be upgraded yet) in the network which
need to connect.
To manage notifications about this bug go to:
https://bugs.launchpad.net/epics-base/+bug/1971737/+subscriptions
- References:
- [Bug 1971737] [NEW] EPICS 3.13 clients cannot connect to EPICS 7 or 3.16 Dirk Zimoch via Core-talk
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