still_useful_timeout
data->rtt.rto = still_useful_timeout();
*rtt = still_useful_timeout();
else *rtt = still_useful_timeout();
else *rtt = still_useful_timeout();
else *rtt = still_useful_timeout();
*rtt = still_useful_timeout();
int still_useful_timeout();
data->rtt.rto = still_useful_timeout();
*rtt = still_useful_timeout();
else *rtt = still_useful_timeout();
else *rtt = still_useful_timeout();
else *rtt = still_useful_timeout();
*rtt = still_useful_timeout();
int still_useful_timeout();
&& to == keep_probing ?still_useful_timeout() :USEFUL_SERVER_TOP_TIMEOUT);