[pgpool-general: 8679] Is there a heartbeat mechanism that keeps a connection alive?

[Zhaoxun Yan]

On <postgresql.conf>,  I can set Ping-Pong mechanism on TCP connection
between postgresql and its client:

tcp_keepalives_idle = 20
tcp_keepalives_interval = 10
tcp_keepalives_count = 3

Can pgpool set keepalive heartbeat, or an idle connection between pgpool
and its client can only be terminated?

Regards,
    Zhaoxun
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