Windows C++ 获取特定进程网络流量发送和接收速率

以下是一个示例代码，可以在Windows下获取特定进程的网络流量的发送和接收速率。

#include <iostream>
#include <windows.h>
#include <wininet.h>
#include <psapi.h>

#pragma comment(lib, 'wininet.lib')
#pragma comment(lib, 'psapi.lib')

// 获取特定进程的网络流量的发送和接收速率
void GetProcessNetworkUsage(DWORD processId, ULONGLONG& sendRate, ULONGLONG& receiveRate)
{
    // 获取进程句柄
    HANDLE hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, processId);
    if (hProcess == NULL)
    {
        std::cout << 'Failed to open process.' << std::endl;
        return;
    }

    // 获取进程模块句柄
    HMODULE hModule;
    DWORD cbNeeded;
    if (!EnumProcessModules(hProcess, &hModule, sizeof(hModule), &cbNeeded))
    {
        std::cout << 'Failed to enumerate process modules.' << std::endl;
        CloseHandle(hProcess);
        return;
    }

    // 获取进程模块文件路径
    TCHAR szModulePath[MAX_PATH];
    if (!GetModuleFileNameEx(hProcess, hModule, szModulePath, sizeof(szModulePath) / sizeof(TCHAR)))
    {
        std::cout << 'Failed to get module file name.' << std::endl;
        CloseHandle(hProcess);
        return;
    }

    // 打开进程的网络连接
    DWORD dwFlags = 0;
    HANDLE hInternet = InternetOpen(L'NetworkUsage', INTERNET_OPEN_TYPE_DIRECT, NULL, NULL, dwFlags);
    if (hInternet == NULL)
    {
        std::cout << 'Failed to open internet.' << std::endl;
        CloseHandle(hProcess);
        return;
    }

    // 获取进程的网络流量信息
    INTERNET_CACHE_ENTRY_INFO info;
    memset(&info, 0, sizeof(info));
    info.dwStructSize = sizeof(info);
    if (!GetUrlCacheEntryInfo(szModulePath, &info, &cbNeeded))
    {
        std::cout << 'Failed to get cache entry info.' << std::endl;
        InternetCloseHandle(hInternet);
        CloseHandle(hProcess);
        return;
    }

    // 计算发送和接收速率
    ULONGLONG sendBytes = info.dwHitRate;
    ULONGLONG receiveBytes = info.dwSizeLow;
    ULONGLONG elapsedTime = GetTickCount64() - info.dwPostCheckDate;
    sendRate = sendBytes * 1000 / elapsedTime;
    receiveRate = receiveBytes * 1000 / elapsedTime;

    // 关闭句柄
    InternetCloseHandle(hInternet);
    CloseHandle(hProcess);
}

int main()
{
    DWORD processId = 1234; // 替换为你要监测的进程ID
    ULONGLONG sendRate, receiveRate;
    GetProcessNetworkUsage(processId, sendRate, receiveRate);
    std::cout << 'Send Rate: ' << sendRate << ' bytes/s' << std::endl;
    std::cout << 'Receive Rate: ' << receiveRate << ' bytes/s' << std::endl;
    return 0;
}

请注意，此代码使用了Windows API函数 'OpenProcess'、'EnumProcessModules' 和 'GetModuleFileNameEx' 来获取进程模块文件路径，然后使用 'GetUrlCacheEntryInfo' 函数来获取进程的网络流量信息。请确保在编译代码时链接 'wininet.lib' 和 'psapi.lib' 库。