server.c

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#include "server.h"
#include "config.h"

int servfd;
struct sockaddr_in servaddr;

void serv_init(struct server *s)
{
    s->fd = socket(AF_INET, SOCK_STREAM, 0);

    if (s->fd == -1) {
        perror("cannot open socket");
        exit(1);
    }

    s->addr.sin_family = PF_INET;
    s->addr.sin_port = htons(SERV_PORT);
    s->addr.sin_addr.s_addr = INADDR_ANY;

    int enable = 1;
    if (setsockopt(s->fd, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(int)) < 0) {
        perror("setsockopt failed");
        close(s->fd);
        exit(1);
    }

    if (bind(s->fd, (struct sockaddr*)&s->addr, sizeof(servaddr)) == -1) {
        perror("failed to bind socket");
        close(s->fd);
        exit(1);
    }

    if (listen(s->fd, 10) == -1) {
        perror("failed to listen");
        close(s->fd);
        exit(1);
    }
}