用c plus plus 实现文件传输

文件传输可以通过使用套接字(Socket)来实现，下面是一个使用C++语言编写的简单的文件传输示例代码：

发送端代码：

#include <iostream>
#include <fstream>
#include <sstream>
#include <string>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>

using namespace std;

const int PORT = 8888; // 端口号
const string IP_ADDRESS = "127.0.0.1"; // IP地址
const int BUFFER_SIZE = 1024; // 缓冲区大小

int main() {
    // 创建套接字
    int sock = socket(AF_INET, SOCK_STREAM, 0);
    if (sock < 0) {
        cerr << "Failed to create socket" << endl;
        return -1;
    }

    // 绑定IP地址和端口号
    struct sockaddr_in addr;
    addr.sin_family = AF_INET;
    addr.sin_port = htons(PORT);
    addr.sin_addr.s_addr = inet_addr(IP_ADDRESS.c_str());
    if (bind(sock, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
        cerr << "Failed to bind socket" << endl;
        return -1;
    }

    // 监听端口
    if (listen(sock, 5) < 0) {
        cerr << "Failed to listen on socket" << endl;
        return -1;
    }

    // 等待客户端连接
    struct sockaddr_in clientAddr;
    socklen_t clientAddrLen = sizeof(clientAddr);
    int clientSock = accept(sock, (struct sockaddr*)&clientAddr, &clientAddrLen);
    if (clientSock < 0) {
        cerr << "Failed to accept connection" << endl;
        return -1;
    }

    // 读取文件内容并发送
    string filename = "test.txt";
    ifstream file(filename.c_str(), ios::binary);
    if (!file) {
        cerr << "Failed to open file" << endl;
        return -1;
    }
    char buffer[BUFFER_SIZE];
    while (file.good()) {
        file.read(buffer, BUFFER_SIZE);
        int count = file.gcount();
        send(clientSock, buffer, count, 0);
    }
    file.close();

    // 关闭套接字
    close(clientSock);
    close(sock);

    return 0;
}

接收端代码：

#include <iostream>
#include <fstream>
#include <sstream>
#include <string>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>

using namespace std;

const int PORT = 8888; // 端口号
const string IP_ADDRESS = "127.0.0.1"; // IP地址
const int BUFFER_SIZE = 1024; // 缓冲区大小

int main() {
    // 创建套接字
    int sock = socket(AF_INET, SOCK_STREAM, 0);
    if (sock < 0) {
        cerr << "Failed to create socket" << endl;
        return -1;
    }

    // 连接到服务器
    struct sockaddr_in serverAddr;
    serverAddr.sin_family = AF_INET;
    serverAddr.sin_port = htons(PORT);
    serverAddr.sin_addr.s_addr = inet_addr(IP_ADDRESS.c_str());
    if (connect(sock, (struct sockaddr*)&serverAddr, sizeof(serverAddr)) < 0) {
        cerr << "Failed to connect to server" << endl;