本程序由服务器端程序和客户端程序两部分组成。
服务器端程序
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/un.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <string.h>
int main()
{
int server_sockfd,client_sockfd;
int server_len,client_len;
struct sockaddr_un server_address;
struct sockaddr_un client_address;
int i,byte;
char ch_send,ch_rec;
unlink("server_socket");
server_sockfd=socket(AF_UNIX,SOCK_STREAM,0);
if(server_sockfd==-1)
{
perror("socket");
exit(1);
}
server_address.sun_family=AF_UNIX;
strcpy(server_address.sun_path,"server_socket");
server_len=sizeof(server_address);
bind(server_sockfd,(struct sockaddr *)&server_address,server_len);
listen(server_sockfd,5);
printf("server waiting for client connect\n");
client_len=sizeof(client_address);
client_sockfd=accept(server_sockfd,(struct sockaddr *)&client_address,(socklen_t *)&client_len);
printf("the server wait for client data\n");
for(i=0,ch_send='1';i<5;i++,ch_send++)
{
if((byte=read(client_sockfd,&ch_rec,1))==-1)
{
perror("read");
exit(1);
}
printf("the character receiver from client is %c\n",ch_rec);
sleep(1);
if(write(client_sockfd,&ch_send,1)==-1)
{
perror("write");
exit(1);
}
}
close(client_sockfd);
unlink("server_socket");
return 0;
}
客户端程序
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/un.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <string.h>
int main()
{
int sockfd;
int len;
struct sockaddr_un address;
int result;
int i,byte;
char ch_recv,ch_send;
sockfd=socket(AF_UNIX,SOCK_STREAM,0);
if(sockfd==-1)
{
perror("socket");
exit(1);
}
address.sun_family=AF_UNIX;
strcpy(address.sun_path,"server_socket");
len=sizeof(address);
result=connect(sockfd,(struct sockaddr*)&address,len);
if(result==-1)
{
printf("ensure the server is up\n");
perror("connect");
exit(1);
}
for(i=0,ch_send='A';i<5;i++,ch_send++)
{
if(write(sockfd,&ch_send,1)==-1)
{
perror("write");
exit(1);
}
if(read(sockfd,&ch_recv,1)==-1)
{
perror("read");
exit(1);
}
printf("receive from server is %c\n",ch_recv);
}
close(sockfd);
return 0;
}
这个是socket的API函数的基础应用，我在这个基础上改编了一个较为复杂的程序，但不利于理解，所以还是把这个原始的贴出来，供借鉴