#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>

#define MY_SOCK_PATH "/tmp/socket"
#define LISTEN_BACKLOG 50

int main(void) {
    int                 sfd, cfd;
    socklen_t           peer_addr_size;
    struct sockaddr_un  my_addr, peer_addr;

    sfd = socket(AF_UNIX, SOCK_STREAM, 0);
    if (sfd == -1) {
        perror("socket");
    }

    memset(&my_addr, 0, sizeof(my_addr));
    my_addr.sun_family = AF_UNIX;
    strncpy(my_addr.sun_path, MY_SOCK_PATH, sizeof(my_addr.sun_path) - 1);

    if (bind(sfd, (struct sockaddr *) &my_addr, sizeof(my_addr)) == -1) {
        perror("bind");
    }

    if (listen(sfd, LISTEN_BACKLOG) == -1) {
        perror("listen");
    }

    peer_addr_size = sizeof(peer_addr);
    /* Now we can accept incoming connections one
       at a time using accept(2). */
    for(int i = 1; i < 4; i++) {
        cfd = accept(sfd, (struct sockaddr *) &peer_addr, &peer_addr_size);

        if (cfd == -1){
             perror("accept");
       }

       /* Code to deal with incoming connection(s)... */
       write(cfd, "Hello World\n", 12);
       printf("Connection %d has been completed\n", i);

    }

    if (close(sfd) == -1) {
        perror("close");
    }

    if (unlink(MY_SOCK_PATH) == -1) {
        perror("unlink");
    }
}