UNIX域嵌套字 ——服务器的实现

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <netinet/in.h>
#include <arpa/inet.h>


typedef struct sockaddr SA;


#define  N  64


int main(int argc, char *argv[])
{
int sockfd;
char buf[N] = "Hello Server";
struct sockaddr_un servaddr;


if (argc < 2)
{
printf("Usage : %s <sock_path>\n", argv[0]);
return -1;
}


// XXX int socket(int domain, int type, int protocol);
if ((sockfd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0)
{
perror("fail to socket");
exit(-1);
}


bzero(&servaddr, sizeof(servaddr));
servaddr.sun_family = PF_UNIX;
strcpy(servaddr.sun_path, argv[1]);


if (connect(sockfd, (SA *)&servaddr, sizeof(servaddr)) < 0)
{
perror("fail to connect");
exit(-1);
}


send(sockfd, buf, N, 0);
recv(sockfd, buf, N, 0);
printf("recv from server : %s\n", buf);
close(sockfd);


return 0;
}