sockun_client.c

/* sockun_client.c */
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>

#define UNIX_DOMAIN "/tmp/UNIX.domain"

int main(int argc, char *argv[])
{
    int connect_fd;
    int ret;
    char snd_buf[1024];
    int i;
    static struct sockaddr_un srv_addr;
    
    //creat unix socket
    connect_fd = socket(PF_UNIX, SOCK_STREAM, 0);
    if (connect_fd < 0)  
    {  
        perror("cannot create communication socket");  
        return 1;
    }
    
    srv_addr.sun_family = AF_UNIX;
    strcpy(srv_addr.sun_path, UNIX_DOMAIN);
    //connect server
    ret = connect(connect_fd, (struct sockaddr *)&srv_addr, sizeof(srv_addr));
    if (ret == -1)
    {
        perror("cannot connect to the server");  
        close(connect_fd);
        return 1;
    }
    
    memset(snd_buf, 0, 1024);
    strcpy(snd_buf, "message from client");
    //send info server
    for (i = 0; i < 4; i++)
    {
        write(connect_fd, snd_buf, sizeof(snd_buf));
    }
    
    close(connect_fd);
    return 0;
}

/* end of sockun_client.c */