/*
 * protocol.h
 *
 *  Created on: 28.11.2010
 *      Author: msloup
 */

#ifndef PROTOCOL_H_
#define PROTOCOL_H_

#define OP_OK    'O'
#define OP_GET   'G'
#define OP_SET   'S'
#define OP_ERROR 'E'
#define OP_CLOSE 'C'

struct protocol_header {
	u_int8_t operation;
	u_int32_t client_id;
	u_int32_t send_at_sec;
	u_int32_t send_at_usec;
	u_int16_t count;
};

struct protocol_item {
	u_int32_t index;
	u_int32_t value;
	u_int32_t ts;
};

#define PROTOCOL_HDR_LEN sizeof(struct protocol_header)
#define PROTOCOL_ITM_LEN sizeof(struct protocol_item)

\
extern struct protocol_header create_header(char operation, int count);
extern struct protocol_header create_header(char operation, int count, int client_id);
extern struct item protocol_item_to_item(struct protocol_item source);
extern struct protocol_item item_to_protocol_item(int index, struct item source);
extern int protocol_item_index(struct protocol_item source);

#endif /* PROTOCOL_H_ */