本地通信编程模型:
进程A |
进程B |
创建套接字(AF_LOCAL) |
创建套接字(AF_LOCAL) |
准备地址(sockadd_un) |
准备地址(sockadd_un) |
绑定(自己的socket和地址) |
连接(connect,链接进程A的地址) |
接收数据 |
发送数据 |
关闭套接字 |
关闭套接字 |
服务端实现代码:
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#define SOCK_FILE "/tmp/sock"
int main()
{
//1.创建socket
int sockfd = socket(AF_LOCAL,SOCK_DGRAM,0);
if(0 > sockfd)
{
perror("socket");
return -1;
}
//2.准备地址
struct sockaddr_un addr = {};
addr.sun_family = AF_LOCAL;
strcpy(addr.sun_path,SOCK_FILE);
//3.绑定
if(bind(sockfd,(struct sockaddr*)&addr,sizeof(addr)))
{
perror("bind");
return -1;
}
//4.接收数据
while(1)
{
char buf[1024] = {};
int ret = recv(sockfd,buf,sizeof(buf),0);
if(0 == strcmp(buf,"quit"))
{
printf("通信结束\n");
break;
}
printf("read:%s\n",buf);
}
//5.关闭socket
close(sockfd);
//6.删除临时文件
unlink(SOCK_FILE);
return 0;
}
客户端实现代码:
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#define SOCK_FILE "/tmp/sock"
int main()
{
//1. 创建socket
int sockfd = socket(AF_LOCAL,SOCK_DGRAM,0);
if(0 > sockfd)
{
perror("socket");
return -1;
}
//2.准备地址
struct sockaddr_un addr = {};
addr.sun_family = AF_LOCAL;
strcpy(addr.sun_path,SOCK_FILE);
//3. 连接
if(connect(sockfd,(struct sockaddr*)&addr,sizeof(addr)))
{
perror("bind");
return -1;
}
//4. 发送数据
while(1)
{
char buf[1024] = {};
printf(">");
gets(buf);
send(sockfd,buf,sizeof(buf),0);
if(0 == strcmp(buf,"quit"))
{
printf("通信结束\n");
break;
}
}
//5. 关闭套接字
close(sockfd);
return 0;
}