fix (MQ): support IPv4-only broker hostnames#8649
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Summary
AF_UNSPECso IPv4-only hostnames workRoot cause
The connector queried
AF_INET6beforeAF_INET. On systems where an IPv4-onlyhostname causes the IPv6 lookup to raise
socket.gaierror, setup returned earlyand never attempted the valid IPv4 addresses.
The same resolution logic is present in
rel-v9r0andrel-v8r0, so this fixshould also be considered for backporting to those maintained release branches.
Validation
BEGINRELEASENOTES
*Resources
FIX: Allow STOMP MQ connections to use IPv4-only broker hostnames.
ENDRELEASENOTES