Unix Socket and Poll

main.c

#include <poll.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>

int main(int argc, char* argv[]) {
    struct pollfd poll_fd;
    struct sockaddr_un addr;
    int result;
    char buffer[256];

    poll_fd.fd = socket(AF_UNIX, SOCK_STREAM, 0);
    if (poll_fd.fd == -1) {
        perror("Could not create Unix socket");
        return EXIT_FAILURE;
    }
    poll_fd.events = POLLIN;

    memset(&addr, 0, sizeof(addr));
    addr.sun_family = AF_UNIX;
    strncpy(addr.sun_path, "/tmp/socket", sizeof(addr.sun_path)-1);

    result = connect(poll_fd.fd, (struct sockaddr*)&addr, sizeof(addr));
    if (result == -1) {
        perror("Could not connect on socket");
        close(poll_fd.fd);
        return EXIT_FAILURE;
    }

    while (true) {
        result = poll(&poll_fd, 1, -1);
        if (result == -1) {
            perror("Could not wait for event.");
            close(poll_fd.fd);
            return EXIT_FAILURE;
        }

        if (result == 0) {
            puts("poll timeout.");
            continue;
        }

        if (poll_fd.revents == POLLIN) {
            memset(buffer, 0, sizeof(buffer));
            if (read(poll_fd.fd, buffer, (sizeof(buffer) - 1)) > 0) {
                printf("Read = %s\n", buffer);
            }
        } else {
            printf("Received event: %d\n", poll_fd.revents);
            close(poll_fd.fd);
            return EXIT_FAILURE;
        }
   }

    close(poll_fd.fd);

    return EXIT_SUCCESS;
}