Dropped conection from libpq PGconn

Hi All,
   I was wondering why does PGconn object keeps saying the connection 
is OK if I lost my Ethernet connection to the box where my database is 
running ?
If that's the case does any one know how to check if my connection 
objects are not valid anymore without using PGReset function call.
I will really appreciate any help any one can provide.



Regards,
Kashyap Jani


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