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[1024] = { 0 };
    //收到的消息
    char receivebuf[1024] = { 0 };
    //发送的长度
    int sendlength = 0;
    //接收的长度
    int receivelength = 0;
    
    //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(2, 2);
    //版本
    WSADATA wsadata;
    //获取版本对比,开始通信
    int error = WSAStartup(wversion, &wsadata);
    if (error != 0)
    {
        printf("error");
        return;
    }
    //取出低八位，高八位，对比版本
    if (LOBYTE(wsadata.wVersion) != 2 || HIBYTE(wsadata.wVersion) != 2)
    {
        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(9982);

    //创建tcp通信
    socket_send = socket(AF_INET, SOCK_STREAM, 0);

    //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, 1024, pfr);
        //通过套接字发送到服务器
        sendlength = send(socket_send, sendbuf, 1024, 0);
        memset(receivebuf, 0, 1024);//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[1024] = { 0 };
    //收到的消息
    char receivebuf[1024] = { 0 };
    //发送的长度
    int sendlength = 0;
    //收到的长度
    int receivelength = 0;
    // 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(2, 2);
    //当前版本
    WSADATA wsadata;
    //获取版本对比,开始通信
    int error = WSAStartup(wversion, &wsadata);
    if (error != 0)
    {
        printf("error");
        return;
    }
    //取出低八位，高八位，对比版本
    if (LOBYTE(wsadata.wVersion) != 2 || HIBYTE(wsadata.wVersion) != 2)
    {
        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(9982);//端口

    //创建服务器套接字，接受消息  SOCK_STREAM流
    socket_server = socket(AF_INET, SOCK_STREAM, 0);//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, 5);//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 = 0;//判断是否文件传输完
    while (1)
    {
        //接收数据
        receivelength = recv(sorket_receive, receivebuf, 1024, 0);
        if (strlen(receivebuf) > 0)
        {
            flag = 1;
            printf("客户端说：%s
", receivebuf);
            fputs(receivebuf, pfw);
            memset(receivebuf, 0, 1024);//清零
        }
        else
        {
            if (flag == 1)
            {
                printf("传输完成
");
                break;
            }
        }
    }

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