如何在Windows 7上记录网络带宽？

Question

在谷歌上搜索了几个小时/天之后，我不敢相信这样的基本任务竟然没有一个现成的“你好世界”。

在Windows 7上，如何记录网络统计信息？如果可能的话，用于特定的IP地址。这里的目标是记录UDP/TCP带宽，并在几个小时内错误。

已经试过了很多软件，但都没有用。例如，NetMon没有成功地启动捕获，即使以管理员身份启动它。

欢迎编程解决方案，特别是使用C/C++/C#。

Answer 1

MS提供了一组IP辅助函数(iphlp/)，允许管理和监视整个IP堆栈(本地IP协议和派生的IP协议)。

您可以使用专门用于IP、TCP或UDP的监视功能。

• GetIpStatistics()
• GetUdpStatistics()
• GetTcpStatistics()

MS在https://learn.microsoft.com/en-us/windows/desktop/api/iphlpapi/nf-iphlpapi-getipstatistics中提供了一个功能示例，我报告如下：

#ifndef UNICODE
#define UNICODE
#endif

#include <winsock2.h>
#include <ws2tcpip.h>
#include <iphlpapi.h>
#include <stdio.h>

#pragma comment(lib, "iphlpapi.lib")

#define MALLOC(x) HeapAlloc(GetProcessHeap(), 0, (x))
#define FREE(x) HeapFree(GetProcessHeap(), 0, (x))

/* Note: could also use malloc() and free() */

int main()
{

    DWORD dwRetval;
    MIB_IPSTATS *pStats;

    pStats = (MIB_IPSTATS *) MALLOC(sizeof (MIB_IPSTATS));

    if (pStats == NULL) {
        wprintf(L"Unable to allocate memory for MIB_IPSTATS\n");
        exit(1);
    }
    dwRetval = GetIpStatistics(pStats);
    if (dwRetval != NO_ERROR) {
        wprintf(L"GetIpStatistics call failed with %d\n", dwRetval);
        exit(1);
    } else {

        wprintf(L"IP forwarding: \t\t" );
        switch (pStats->dwForwarding) {
        case MIB_IP_FORWARDING: 
            wprintf(L"Enabled\n");
            break;
        case MIB_IP_NOT_FORWARDING: 
            wprintf(L"Disabled\n");
            break;
        default: 
            wprintf(L"unknown value = %d\n", pStats->dwForwarding);
            break;
        }

        wprintf(L"Default initial TTL: \t\t\t\t\t%u\n", pStats->dwDefaultTTL);

        wprintf(L"Number of received datagrams: \t\t\t\t%u\n", pStats->dwInReceives);
        wprintf(L"Number of received datagrams with header errors: \t%u\n", pStats->dwInHdrErrors);
        wprintf(L"Number of received datagrams with address errors: \t%u\n", pStats->dwInAddrErrors);

        wprintf(L"Number of datagrams forwarded: \t\t\t\t%ld\n", pStats->dwForwDatagrams);

        wprintf(L"Number of received datagrams with an unknown protocol: \t%u\n", pStats->dwInUnknownProtos);
        wprintf(L"Number of received datagrams discarded: \t\t%u\n", pStats->dwInDiscards);
        wprintf(L"Number of received datagrams delivered: \t\t%u\n", pStats->dwInDelivers);

        wprintf(L"Number of outgoing datagrams requested to transmit: \t%u\n", pStats->dwOutRequests);
        wprintf(L"Number of outgoing datagrams discarded for routing: \t%u\n", pStats->dwRoutingDiscards);
        wprintf(L"Number of outgoing datagrams discarded: \t\t%u\n", pStats->dwOutDiscards);
        wprintf(L"Number of outgoing datagrams with no route to destination discarded: %u\n", pStats->dwOutNoRoutes);

        wprintf(L"Fragment reassembly timeout: \t\t\t\t%u\n", pStats->dwReasmTimeout);
        wprintf(L"Number of datagrams that required reassembly: \t\t%u\n", pStats->dwReasmReqds);
        wprintf(L"Number of datagrams successfully reassembled: \t\t%u\n", pStats->dwReasmOks);
        wprintf(L"Number of datagrams that could not be reassembled: \t%u\n", pStats->dwReasmFails);

        wprintf(L"Number of datagrams fragmented successfully: \t\t%u\n", pStats->dwFragOks);
        wprintf(L"Number of datagrams not fragmented and discarded: \t%u\n", pStats->dwFragFails);
        wprintf(L"Number of fragments created: \t\t\t\t%u\n", pStats->dwFragCreates);

        wprintf(L"Number of interfaces: \t\t\t\t\t%u\n", pStats->dwNumIf);
        wprintf(L"Number of IP addresses: \t\t\t\t%u\n", pStats->dwNumAddr);
        wprintf(L"Number of routes: \t\t\t\t\t%u\n", pStats->dwNumRoutes);
    }

// Free memory allocated for the MIB_IPSTATS structure
    if (pStats)
        FREE(pStats);

    return 0;
}

此代码可用于与IP、TCP和UDP相关的每个函数，方法是将助手函数替换为相应的函数。

还存在扩展版本，用于允许将监视限制为IPV4或IPV6的函数。

详细信息可在IP助手的MS页面上找到。

Answer 2

下面是C#中的工作代码：

using System;
using System.Net;
using System.Net.NetworkInformation;
using System.Net.Sockets;
using System.Text;

namespace App1
{
class Wrap
{
    public static void ShowUdpStatistics(NetworkInterfaceComponent version)
    {
        IPGlobalProperties properties = IPGlobalProperties.GetIPGlobalProperties();
        UdpStatistics udpStat = null;

        switch (version)
        {
            case NetworkInterfaceComponent.IPv4:
                udpStat = properties.GetUdpIPv4Statistics();
                Console.WriteLine("UDP IPv4 Statistics");
                break;
            case NetworkInterfaceComponent.IPv6:
                udpStat = properties.GetUdpIPv6Statistics();
                Console.WriteLine("UDP IPv6 Statistics");
                break;
            default:
                throw new ArgumentException("version");
                //    break;
        }
        Console.WriteLine("  Datagrams Received ...................... : {0}",
            udpStat.DatagramsReceived);
        Console.WriteLine("  Datagrams Sent .......................... : {0}",
            udpStat.DatagramsSent);
        Console.WriteLine("  Incoming Datagrams Discarded ............ : {0}",
            udpStat.IncomingDatagramsDiscarded);
        Console.WriteLine("  Incoming Datagrams With Errors .......... : {0}",
            udpStat.IncomingDatagramsWithErrors);
        Console.WriteLine("  UDP Listeners ........................... : {0}",
            udpStat.UdpListeners);
        Console.WriteLine("");
    }

    /*public static void SendUdp()
    {
        Socket sock = new Socket(AddressFamily.InterNetwork, SocketType.Dgram,
ProtocolType.Udp);

        IPAddress serverAddr = IPAddress.Parse("192.168.2.255");

        IPEndPoint endPoint = new IPEndPoint(serverAddr, 11050);

        string text = "Hello";
        byte[] send_buffer = Encoding.ASCII.GetBytes(text);

        sock.SendTo(send_buffer, endPoint);
    }*/

}

class Program
{
    static void Main(string[] args)
    {
        for (int i=0; i < 10; i++)
        {
            Wrap.ShowUdpStatistics(NetworkInterfaceComponent.IPv4);
            /*Wrap.SendUdp();*/
        }
    }
}
}

这是一个增强的(而且是开箱即用！)MSDN文档中示例的版本。

此处添加了注释代码，以验证计数器在发送UDP数据包时是否会增长。感谢这个问题的第一个答案。