unix datagram server uds.c and client udc.c

udc.c

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

int main() {
    int fd = socket(PF_UNIX, SOCK_STREAM, 0);
    if (fd == -1) {
        perror("socket");
        return -1;
    }

    struct sockaddr_un addr;
    memset(&addr, 0, sizeof(addr));
    addr.sun_family = AF_UNIX;
    strcpy(addr.sun_path, "jobs");

    fprintf(stderr, "connect\n");
    if (connect(fd, (struct sockaddr *)&addr, sizeof(addr)) == -1) {
        perror("connect");
        return -1;
    }

    fprintf(stderr, "write\n");
    ssize_t rv = write(fd, "hello\n", 6);
    if (rv == -1) {
        perror("write");
        return -1;
    }
    fprintf(stderr, "bytes: %ld\n", rv);

//    fprintf(stderr, "sleep\n");
//    sleep(10);

    fprintf(stderr, "close\n");
    close(fd);
}

uds.c

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

int main() {
    int fd = socket(PF_UNIX, SOCK_STREAM, 0);
    if (fd == -1) {
        perror("socket");
        return -1;
    }

    struct sockaddr_un addr;
    memset(&addr, 0, sizeof(addr));
    addr.sun_family = AF_UNIX;
    strcpy(addr.sun_path, "jobs");

    fprintf(stderr, "bind\n");
    if (bind(fd, (struct sockaddr *)&addr, sizeof(addr)) == -1) {
        perror("bind");
        return -1;
    }

    fprintf(stderr, "listen\n");
    if (listen(fd, 5) == -1) {
        perror("accept");
        return -1;
    }

    fprintf(stderr, "accept\n");
    struct sockaddr_un remote;
    socklen_t len;
    int client = accept(fd, (struct sockaddr *)&remote, &len);
    if (client == -1) {
        perror("accept");
        return -1;
    }

    fprintf(stderr, "read\n");
    char buf[1024];
    ssize_t rv = read(client, buf, sizeof(buf));
    if (rv == -1) {
        perror("read");
        return -1;
    }
    fprintf(stderr, "bytes: %ld\n", rv);
  
      fprintf(stderr, "sleep\n");
    sleep(60);

    fprintf(stderr, "close\n");
    close(fd);
}