Modify the source code and compile it yourself
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src\Cedar\Radius.h
//#define RADIUS_RETRY_INTERVAL 500 // Retransmission interval
//#define RADIUS_RETRY_TIMEOUT (10 * 1000) // Time-out period
#define RADIUS_RETRY_INTERVAL 60000 // Retransmission interval
#define RADIUS_RETRY_TIMEOUT (60 * 1000) // Time-out period
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src\Cedar\Cedar.h