Cloned from upstream: https://pagure.io/freeipa/issue/6641
The RPC client library for XML-RPC and JSON-RPC calls does not support "Connection: keep-alive" to benefit from persistent TCP connection. Every RPC call creates a new TCP connection and therefore triggers a TLS handshake. A persistent TCP connection improves performance and reduces both overhead and latency. Even for a local and idling server, keep-alive can reduce round-trip time by 20% or more.
7beb6d1cad7e2200208cb14be6c823a89abf0dc3 Use connection keep-alive
b2bdd2e1a912573ae4a3e8e5f40831a800d972f7 Add debug logging for keep-alive
7f567286f6b89f3e981af02913e833d3e8ed5064 Increase Apache HTTPD's default keep alive timeout
25cf4a2e76ff976fe15029f9da7e4e3555f203d4 Use connection keep-alive
f78439439c3c2ef6491fd5275de9d40b4b40a9b7 Add debug logging for keep-alive
4b426fbfa2dc83f1f43abbc2b9396bd9f1b07f74 Increase Apache HTTPD's default keep alive timeout
A performance enhancement which speeds up all CLI usages but it is wanted mainly for Custodia Vault use cases which internally uses a lot of connections from client.
I'd think this would demonstrate it: ipa --debug -vvv vault-add test --password=Secret.123
Three v's will show the HTTP headers and the --debug will show the added debug messages in the patchset. You'd want to look for "HTTP connection keep-alive" in particular.
This may end up being too verbose for its own good but it's where I'd start.
Tested this bug with following observations:
Verified that on executing "vault-add" command, a persistent TCP connection "HTTP Connection Keep-alive" task is observed.
# echo Secret123 | ipa-kra-install
# ipa --debug -vvv vault-add test2 --password=Secret.123
Refer attached log.
Thus on the basis of observations inside the log, marking the status of bug to "VERIFIED".
Created attachment 1285014 [details]
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.