How can I access netstat-like Ethernet statistics from a Windows program

Question

How can I access Ethernet statistics from C/C++ code like netstat -e?

Interface Statistics

                       Received            Sent
         


        

Answer 1

Let me answer to myself, as I asked the same on another forum.

WMI is good, but it's easier to use IpHlpApi instead:

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

int main(int argc, char *argv[])
{

PMIB_IFTABLE pIfTable;
MIB_IFROW ifRow;
PMIB_IFROW pIfRow = &ifRow;
DWORD dwSize = 0;

// first call returns the buffer size needed
DWORD retv = GetIfTable(pIfTable, &dwSize, true);
if (retv != ERROR_INSUFFICIENT_BUFFER)
    WriteErrorAndExit(retv);
pIfTable = (MIB_IFTABLE*)malloc(dwSize);

retv = GetIfTable(pIfTable, &dwSize, true);
if (retv != NO_ERROR)
    WriteErrorAndExit(retv);

// Get index
    int i,j;
    printf("\tNum Entries: %ld\n\n", pIfTable->dwNumEntries);
    for (i = 0; i < (int) pIfTable->dwNumEntries; i++)
    {
        pIfRow = (MIB_IFROW *) & pIfTable->table[i];
        printf("\tIndex[%d]:\t %ld\n", i, pIfRow->dwIndex);
        printf("\tInterfaceName[%d]:\t %ws", i, pIfRow->wszName);
        printf("\n");
        printf("\tDescription[%d]:\t ", i);
        for (j = 0; j < (int) pIfRow->dwDescrLen; j++)
            printf("%c", pIfRow->bDescr[j]);
        printf("\n");
        ...