sysart/network.h

#ifndef SYSART_NETWORK_H
#define SYSART_NETWORK_H

#include <stdint.h>
#include <unistd.h>

#include "common.h"

#define PORT "29541"

#define PKT_SIZE_MAX 4096

#define assert_packet_size(packet) _Static_assert( \
    sizeof(struct packet) < PKT_SIZE_MAX, "PKT_SIZE_MAX violated");

#define PKT_TYPE_UPDATE 0x01
struct packet_update_t {
    uint16_t size;
    uint8_t type;
    uint8_t y;
    uint8_t x;
    uint8_t ch;
} __attribute__((__packed__));
assert_packet_size(packet_update_t)

#define PKT_TYPE_HELLO 0x02

#define PKT_TYPE_INIT 0x03
struct packet_init_t {
    uint16_t size;
    uint8_t type;
    uint8_t data[(WIDTH+1)*HEIGHT];
} __attribute__((__packed__));
assert_packet_size(packet_init_t)

int recv_packet(int fd, uint8_t* buf, size_t* n);
int recv_dump_all(int fd);
int recv_dump(int fd);
size_t send_packet(int fd, uint8_t* buf, size_t length);

#endif