fqdn proxy: fix data race detection on TCP fqdn proxy #28219
Merged
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PR #25309 introduced a data race by sharing the
sessionUDPFactory
between the DNS server instances for the different IP families (IPv4 & IPv6). This has been detected by #27979.This commit fixes the issue for the TCP servers too. If not set explicitly, these are initialized with the default udp session factory to prevent nil pointer exceptions. Therefore, an explicit noop udp session factory is set.
Fixes: #28156