client_udp.c

#include "client_udp.h"
#include "constans.h"

void prepare_client(int *sock, struct sockaddr_in *client_addr) {
    if ((*sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
        perror("client socket failed");
    }

    if (bind(*sock, (struct sockaddr*)client_addr, sizeof(struct sockaddr)) < 0) {
        perror("bind client error");
    }
}

void send_to_server(int sock, struct sockaddr_in serv_addr, int16_t id, int16_t keys) {
    int16_t tab[2];
    tab[0] = id;
    tab[1] = keys;
    socklen_t serv_addr_size = sizeof(struct sockaddr);
    if (sendto(sock, tab, sizeof(int16_t) * 2, 0,
            (struct sockaddr *) &serv_addr, serv_addr_size) < 0) {
        perror("sendto error");
    }
 
}

int client_listen(int sock, int16_t *tab){
    int length = recvfrom(sock, tab, sizeof(int16_t) * BUF_MAX, 0, NULL, 0);
    return length;
}