66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
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#include<stdio.h>
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#include <sys/types.h> /* See NOTES */
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#include <sys/socket.h>
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#include <sys/socket.h>
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#include <arpa/inet.h>
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#include <unistd.h>
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#include<stdlib.h>
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#define SERVER_ADDR "172.29.147.16" //服务器的IP地址
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#define SERVER_PORT 20000 //port 服务器的端口号
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int main()
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{
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int ret;
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//1、买手机(建立套接字)
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int socketFd = socket(AF_INET, SOCK_STREAM, 0);
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if(socketFd == -1){
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perror("socket error");
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exit(0);
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}
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//2、绑定自己的电话号码（绑定自己的IP地址和端口号）
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//定义一个IPV4结构体变量,存储IP地址和端口号
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struct sockaddr_in serverAddr;
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serverAddr.sin_family = AF_INET ;//IPv4
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serverAddr.sin_port = htons(SERVER_PORT);//16端口号 --本地端口号--网络端口号
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serverAddr.sin_addr.s_addr = inet_addr(SERVER_ADDR); //32IP地址 --本地IP--网络IP
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ret = bind(socketFd, (struct sockaddr*)&serverAddr, sizeof(struct sockaddr_in));
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if(ret == -1){
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perror("bind error");
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exit(0);
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}
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//3、设置铃声（设置监听）
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ret = listen(socketFd, 20); //20表示同时连接上来的客户端的最大数量
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if(ret == -1){
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perror("listen error");
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exit(0);
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}
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printf("阻塞等待新的客户端连接......\n");
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//4、坐等电话(阻塞等待客户端的连接)
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int newClientFd = accept(socketFd, NULL,NULL);
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if(ret == -1){
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perror("accept error");
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exit(0);
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}
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//注意 accept函数的返回值 表示 新的客户端的文件描述符 ，后面与客户端通信 必须使用该文件描述符
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printf("有新的客户端连接上来....\n");
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//5、聊天 接收 数据
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while(1)
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{
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char buf[1024]={0};
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read(newClientFd,buf,sizeof(buf));
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printf("buf:%s\n",buf);
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}
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//6、关闭 断开连接
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close(socketFd);
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close(newClientFd);
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return 0;
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}
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