Fix idle connection check for TLS connections #951
Merged
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Summary
When using TLS connection, the idle connection is not correctly checked for liveness. It's because tls.Conn does not implement syscall.Conn which is used to read raw from socket:
https://github.com/ClickHouse/clickhouse-go/blob/main/conn_check.go#L31
Add a additional type cast to detect TLS conn and get underlying connection.
Changelog: Fix idle connection liveness check for TLS connections