Unix Domain Socket Server

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        // description of your code here

#include <stdlib.h>
#include <stddef.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <errno.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/types.h>
#define UNIX_DOMAIN "/tmp/UNIX.domain"  
int main(void)
{
    socklen_t clt_addr_len;
    int listen_fd;
    int com_fd;
    int ret;
    int i;
    static char recv_buf[1024];
    socklen_t len;
    struct sockaddr_un clt_addr;
    struct sockaddr_un srv_addr;
    listen_fd=socket(PF_UNIX,SOCK_STREAM,0);
    if(listen_fd<0)
    {
        perror("cannot create communication socket");
        return 1;
    }

    //set server addr_param  
    srv_addr.sun_family=AF_UNIX;
    strncpy(srv_addr.sun_path,UNIX_DOMAIN,sizeof(srv_addr.sun_path)-1);
    //unlink(UNIX_DOMAIN);  

    //bind sockfd & addr  
    ret=bind(listen_fd,(struct sockaddr*)&srv_addr,sizeof(srv_addr));
    if(ret==-1)
{
        perror("cannot bind server socket");
        close(listen_fd);
        unlink(UNIX_DOMAIN);
        return 1;
    }
    //listen sockfd   
    ret=listen(listen_fd,1);
    if(ret==-1)
    {
        perror("cannot listen the client connect request");
        close(listen_fd);
        unlink(UNIX_DOMAIN);
        return 1;
    }
        printf("server started...\n");
    //have connect request use accept  
    len=sizeof(clt_addr);
    com_fd=accept(listen_fd,(struct sockaddr*)&clt_addr,&len);
    if(com_fd<0)
    {
        perror("cannot accept client connect request");
        close(listen_fd);
        unlink(UNIX_DOMAIN);
        return 1;
    }
    //read and printf sent client info  
    printf("\n=====info=====\n");
    for(i=0;i<4;i++)
    {
        memset(recv_buf,0,1024);
        int num=read(com_fd,recv_buf,sizeof(recv_buf));
        printf("Message from client (%d)) :%s\n",num,recv_buf);
    }
    close(com_fd);
close(listen_fd);
    unlink(UNIX_DOMAIN);
    return 0;
}

Tags:
• domain
• server
• socket
• Unix