linux学习笔记16 本地套接字进程间通信
本地套接字通信服务器端
#include <iostream>
#include <sys/types.h>
#include <sys/socket.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/un.h>
using namespace std;
int main()
{
int lfd=socket(AF_LOCAL, SOCK_STREAM, 0);
int cfd;
unlink("server.socket");
struct sockaddr_un ser_addr;
ser_addr.sun_family=AF_LOCAL;
strcpy(ser_addr.sun_path, "server.socket");
bind(lfd, (struct sockaddr *)&ser_addr, sizeof(ser_addr));
listen(lfd, 20);
struct sockaddr_un cli_addr;
socklen_t cli_addr_len;
cfd=accept(lfd, (struct sockaddr *)&cli_addr, &cli_addr_len);
if (cfd==-1)
{
cout<<"accept is error!\n";
exit(1);
}
while (1)
{
char buf[256];
char response[]="receive buf!\n";
int n=read(cfd, buf, sizeof(buf));
if (n==-1)
{
cout<<"read is error!\n";
exit(1);
}
else if (n==0)
{
close(cfd);
cout<<"client is closed\n";
break;
}
else
{
cout<<buf<<endl;
write(cfd, response, strlen(response));
}
}
close(lfd);
return 0;
}
本地套接字客户端
#include <iostream>
#include <sys/types.h>
#include <sys/socket.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/un.h>
using namespace std;
int main()
{
int cfd=socket(AF_LOCAL, SOCK_STREAM, 0);
struct sockaddr_un cli_addr;
cli_addr.sun_family=AF_LOCAL;
strcpy(cli_addr.sun_path, "client.socket");
bind(cfd, (struct sockaddr *)&cli_addr, sizeof(cli_addr));
struct sockaddr_un ser_addr;
ser_addr.sun_family=AF_LOCAL;
strcpy(ser_addr.sun_path, "server.socket");
connect(cfd, (struct sockaddr *)&ser_addr, sizeof(ser_addr));
while (1)
{
char buf[256];
fgets(buf, sizeof(buf), stdin);
write(cfd, buf, strlen(buf));
read(cfd, buf, sizeof(buf));
cout<<buf<<endl;
}
close(cfd);
return 0;
}