使用TCP/IP协议实现客户端和服务器端进行通信:
1.服务器端(test1.c):
#include <sys/socket.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include <stdio.h>
#include <unistd.h>// 创建服务器端
int main()
{//1.创建套接字int serfd=socket(AF_INET,SOCK_STREAM,0);if(serfd==-1){printf("create socket failed\n");return -1;}//2.绑定套接字和服务器地址struct sockaddr_in addr;addr.sin_family=AF_INET;addr.sin_port=htons(8000);addr.sin_addr.s_addr=inet_addr("127.0.0.1");int ret=bind(serfd,(struct sockaddr*)&addr,sizeof(addr));
if(ret==-1){printf("bind failed\n");return -2;}//3.监听模式ret=listen(serfd,10);if(ret==-1){printf("listen failed\n");return -3;}//4. 等待客户端连接的到来printf("waitting connect ......\n");
int clifd= accept(serfd,NULL,NULL);
if(clifd==-1)
{printf("create client socket file failed\n");return -4;
}// 5. 读客户端发来的数据
char buff[100]={0};
read(clifd,buff,100);
printf("read content=%s\n",buff);//6.关闭连接close(clifd);//close(serfd);return 0;}2.客户端(test2.c):
#include <sys/socket.h>
#include <sys/types.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <stdio.h>// 创建客户端
int main()
{//1.create socket int clifd=socket(AF_INET,SOCK_STREAM,0);//2.客户端建立socket连线struct sockaddr_in addr; addr.sin_family=AF_INET;addr.sin_port=htons(8000);addr.sin_addr.s_addr=inet_addr("127.0.0.1");int ret=connect(clifd,(struct sockaddr *)&addr,sizeof(addr));if(ret==-1){printf("connect failed\n");return -1;}//3. 向客户端发送写的数据write(clifd,"hello",6);// 4.关闭客户端close(clifd);return 0;
}运行结果:
