TCP本地通信 简单程序实现 （一）

服务端：

#include<sys/types.h>

#include<sys/socket.h>

#include<stdio.h>

#include<sys/un.h>

#include<unistd.h>

#include<stdlib.h>

int main(int argc,char *argv[])

{

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_recv;

unlink("server_socket");

server_sockfd=socket(AF_UNIX,SOCK_STREAM,0); // AF_INET IPV4域 AF_UNIX UNIX 域 SOCK_STREAM 可靠/双向

//面向链接字节流，0 ：系统自动选择 协议

server_address.sun_family=AF_UNIX;

strcpy(server_address.sun_path,"server_socket");//如果是 AF_UNIX域，需要与一个文件进行绑定 //临时文件                           //会在当前目录下，生成临时文件  server_socket

server_len=sizeof(server_address);

//绑定 ip 地址和端口

bind(server_sockfd,(struct sockaddr *)&server_address,server_len);

//监听网络，

listen(server_sockfd,5);

printf("is watiing for client connect...\n");

//客户端发起连接

client_len=sizeof(client_address);

client_sockfd=accept(server_sockfd,(struct sockaddr *)&client_address,(socklen_t *)&client_len);    //当没有 客户端请求，accept 会阻塞

while(1)

{

if((byte=read(client_sockfd,&ch_recv,1))==-1)

{

perror("read");

exit(EXIT_FAILURE);

}

printf("receive a character from client is : %c \n",ch_recv);

//sleep(1);

//    printf("input a charater to send :\n");

ch_send=getchar();

if((byte=write(client_sockfd,&ch_send,1))==-1)

{

perror("write");

exit(EXIT_FAILURE);

}

//printf("");

}

close(client_sockfd);

unlink("server socket");

return 0;

}/**/

客户端：

#include <sys/types.h>

#include <sys/socket.h>

#include <stdio.h>

#include <sys/un.h>

#include <stdlib.h>

#include <unistd.h>

int main(int argc,char *argv[])

{

int sockfd;

int len;

struct sockaddr_un address;

int i,byte;

char ch_recv,ch_send;

sockfd=socket(PF_UNIX,SOCK_STREAM,0);

address.sun_family=AF_UNIX;

strcpy(address.sun_path,"server_socket");

len=sizeof(address);

connect(sockfd,(struct sockaddr*)&address,len);

while(1)

{

//    printf("intpur a charater to send:\n");

ch_send=getchar();

write(sockfd,&ch_send,1);

byte=read(sockfd,&ch_recv,1);

printf("receiver charater from server is %c:\n\n",ch_recv);

}

close(sockfd);

return 0;

}