-(void)server:(MBServer*)server
 willSendData:(NSMutableString*)data
        error:(NSError**)error;

// You *must* retain the returned error before
// passing it back or you will crash

-(void)server:(MBServer*)server
 willSendData:(NSMutableString*)data
        error:(NSError**)error;

-(NSError *)server:(MBServer*)server
      willSendData:(NSMutableString*)data;

// Send your NSError response in the dictionary with the key
// MBServerErrorResponseKey

-(void)server:(MBServer*)server
 willSendData:(NSMutableString*)data
     response:(NSMutableDictionary*)response;

-(void)server:(MBServer*)server
 willSendData:(NSMutableString*)data
        shouldStop:(BOOL*)stopFlag;
-(NSError*)getLastErrorForServer:(MBServer*)server;