98.TCP通信传输文件

客户端

 #define  _CRT_SECURE_NO_WARNINGS
 #include<stdio.h>
 #include <stdlib.h>
 #include <string.h>
 //网络通信
 #include<winsock.h>
 #pragma  comment(lib,"ws2_32.lib")

 void main()
 {
     //发送的消息
     char sendbuf[] = {  };
     //收到的消息
     char receivebuf[] = {  };
     //发送的长度
     int sendlength = ;
     //接收的长度
     int receivelength = ;

     //通信套接字,用于创建TCP连接
     SOCKET socket_send;
     //创建服务器端结构体保存ip地址以及端口号
     SOCKADDR_IN sever_addr;

     //版本,2,2版本
     WORD wversion = MAKEWORD(, );
     //版本
     WSADATA wsadata;
     //获取版本对比,开始通信
     int error = WSAStartup(wversion, &wsadata);
     if (error != )
     {
         printf("error");
         return;
     }
     //取出低八位，高八位，对比版本
     if (LOBYTE(wsadata.wVersion) !=  || HIBYTE(wsadata.wVersion) != )
     {
         printf(" version  error");
         return;
     }
     //设置通信模式
     sever_addr.sin_family = AF_INET;
     sever_addr.sin_addr.S_un.S_addr = inet_addr("192.168.0.104");
     //端口
     sever_addr.sin_port = htons();

     //创建tcp通信
     socket_send = socket(AF_INET, SOCK_STREAM, );

     //通过套接字连接到服务器
     connect(socket_send, (SOCKADDR*)&sever_addr, sizeof(SOCKADDR));

     FILE *pfr = fopen("1.txt", "rb");

     while (!feof(pfr))
     {
         fgets(sendbuf, , pfr);
         //通过套接字发送到服务器
         sendlength = send(socket_send, sendbuf, , );
         memset(receivebuf, , );//清零
     }

     //关闭网络
     closesocket(socket_send);
     WSACleanup();//关闭
     system("pause");
 }

服务器端

 #define  _CRT_SECURE_NO_WARNINGS
 #include<stdio.h>
 #include <stdlib.h>
 #include <string.h>
 //网络通信
 #include<winsock.h>
 #pragma  comment(lib,"ws2_32.lib")

 void main()
 {
     //发送的消息
     char sendbuf[] = {  };
     //收到的消息
     char receivebuf[] = {  };
     //发送的长度
     int sendlength = ;
     //收到的长度
     int receivelength = ;
     // SOCKADDR结构体长度
     int length;

     //服务器套接字
     SOCKET socket_server;
     //连接的套接字
     SOCKET sorket_receive;

     //服务器结构体信息
     SOCKADDR_IN sever_addr;
     //客户端结构体信息
     SOCKADDR_IN client_addr;

     //版本,2,2版本
     WORD wversion = MAKEWORD(, );
     //当前版本
     WSADATA wsadata;
     //获取版本对比,开始通信
     int error = WSAStartup(wversion, &wsadata);
     if (error != )
     {
         printf("error");
         return;
     }
     //取出低八位，高八位，对比版本
     if (LOBYTE(wsadata.wVersion) !=  || HIBYTE(wsadata.wVersion) != )
     {
         printf(" version  error");
         return;
     }

     //设置服务器结构体信息
     sever_addr.sin_family = AF_INET;//通信
     sever_addr.sin_addr.S_un.S_addr = htonl(INADDR_ANY);//获取本地址
     sever_addr.sin_port = htons();//端口

     //创建服务器套接字，接受消息  SOCK_STREAM流
     socket_server = socket(AF_INET, SOCK_STREAM, );//创建
     //把套接字与服务器结构体绑定 (绑定的是地址，端口)
     bind(socket_server, (SOCKADDR*)&sever_addr, sizeof(SOCKADDR));
     //服务器套接字监听
     listen(socket_server, );//最大等待数目为5
     length = sizeof(SOCKADDR);
     //通过服务器套接字接受连接,初始化套接字sorket_receive,把连接者的信息存放在结构体client_addr中
     sorket_receive = accept(socket_server, (SOCKADDR*)&client_addr, &length);

     FILE *pfw = fopen("2.txt", "wb");
     int flag = ;//判断是否文件传输完
     while ()
     {
         //接收数据
         receivelength = recv(sorket_receive, receivebuf, , );
         if (strlen(receivebuf) > )
         {
             flag = ;
             printf("客户端说：%s\n", receivebuf);
             fputs(receivebuf, pfw);
             memset(receivebuf, , );//清零
         }
         else
         {
             if (flag == )
             {
                 printf("传输完成\n");
                 break;
             }
         }
     }

     //释放网络
     closesocket(sorket_receive);//关闭网络
     closesocket(socket_server);
     WSACleanup();//关闭
     system("pause");
 }