PVA: Version 3, replySrcPort, several fixes #3434
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added 17 commits
June 11, 2025 10:58
Client emits searches with new `replySrcPort` flag. Forwarded search messages have updated client address and `replySrcPort` option is thus cleared because client address can be used without further adjustments. Both server and client default to 224.0.0.128 for local multicast. Both client and server forward to local multicast but only server needs to listen to MC. Log more SearchRequest detail.
When forwarding UDP unicast search requests, prefix them with origin tag. When server receives search request, check for optional preceding origin tag to identify forwarded message. On forward, 'reply_to_src_port' flag is copied, but server ignores it in forwarded messages.
…us.git into pva_search_reply_port
.. used to require explicit unsubscribe or closedown of TCP connection
… into pva_search_reply_port
… into pva_search_reply_port
... to indicate that this server now has the PV. Useful for poxies to indicate ASAP that a PV was just created, not waiting until the next client search tick
kasemir
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Several accumulated PVA updates.
PVA version 3 introduces a new
replySrcPortflag.epics-docs/epics-docs#134
epics-base/pvxs#116
Adds CMD_ORIGIN_TAG handling to java implementation, used to be ignored.
Client emits searches with new
replySrcPortflag.Forwarded UDP search messages have updated client address and get prefixed with CMD_ORIGIN_TAG.
replySrcPortremains set because servers can detect a forwarded message via the CMD_ORIGIN_TAG.Log more SearchRequest detail.
Default to 224.0.0.128 for local multicast in server, client, MulticastDemo.
Add PV name prefix to BoolDemo.
With TLS, provide access to both the client and the server’s X509 name.
PVA server clears subscription when client destroys a channel without beforehand clearing the subs.
Allow setting index or label of a PVAEnum and serve it with correct “NTEnum” type name.
Fix subscription update race in PVAServer.
Allow use of PVAServer’s ‘reply_sender’ by a gateway to reply ASAP when it connects on the client side without having to wait for a new search on the sender side.