in source/defender.c [305:323]
static DefenderStatus_t matchBridge( const char * pRemainingTopic,
                                     uint16_t remainingTopicLength )
{
    DefenderStatus_t ret = DefenderNoMatch;
    assert( pRemainingTopic != NULL );
    if( remainingTopicLength >= DEFENDER_API_LENGTH_BRIDGE )
    {
        if( strncmp( pRemainingTopic,
                     DEFENDER_API_BRIDGE,
                     ( size_t ) DEFENDER_API_LENGTH_BRIDGE ) == 0 )
        {
            ret = DefenderSuccess;
        }
    }
    return ret;
}