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copied!<p>I solved the problem. To get TCP statistics for IPV4, I used this code :</p> <pre><code>#include "stdafx.h" #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() { PMIB_TCPSTATS pTCPStats; DWORD dwRetVal = 0; pTCPStats = (MIB_TCPSTATS*) MALLOC (sizeof(MIB_TCPSTATS)); if (pTCPStats == NULL) { printf("Error allocating memory\n"); return 1; } if ((dwRetVal = GetTcpStatisticsEx(pTCPStats,AF_INET)) == NO_ERROR) { printf("\tActive Opens: %ld\n", pTCPStats->dwActiveOpens); printf("\tPassive Opens: %ld\n", pTCPStats->dwPassiveOpens); printf("\tSegments Recv: %ld\n", pTCPStats->dwInSegs); printf("\tSegments Xmit: %ld\n", pTCPStats->dwOutSegs); printf("\tTotal # Conxs: %ld\n", pTCPStats->dwAttemptFails); printf("\tAttemp failed: %ld\n", pTCPStats->dwAttemptFails); printf("\tcurr estab: %ld\n", pTCPStats->dwCurrEstab); printf("\testab reset: %ld\n", pTCPStats->dwEstabResets); printf("\tIn err: %ld\n", pTCPStats->dwInErrs); printf("\tmax conn: %ld\n", pTCPStats->dwMaxConn); printf("\tNum conn: %ld\n", pTCPStats->dwNumConns); printf("\tout rst: %ld\n", pTCPStats->dwOutRsts); printf("\tretrans seg: %ld\n", pTCPStats->dwRetransSegs); printf("\tRtoAlgorithm: %ld\n", pTCPStats->dwRtoAlgorithm); printf("\RtoMax: %ld\n", pTCPStats->dwRtoMax); printf("\RtoMin: %ld\n", pTCPStats->dwRtoMin); printf("\RtoAlgorithm: %ld\n", pTCPStats->RtoAlgorithm); } else { printf("GetTcpStatistics failed with error: %ld\n", dwRetVal); LPVOID lpMsgBuf; if (FormatMessage( FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, dwRetVal, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language (LPTSTR) &lpMsgBuf, 0, NULL )) { printf("\tError: %s", lpMsgBuf); } LocalFree( lpMsgBuf ); } if (pTCPStats) FREE (pTCPStats); system("pause"); } </code></pre> <p>and to get statistics for IPv6, I just replace <code>AF_INET</code> by <code>AF_INET6</code></p>

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