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GetTcpStatisticsEx2 function (iphlpapi.h)

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The GetTcpStatisticsEx2 function retrieves the Transmission Control Protocol (TCP) statistics for the current computer. The GetTcpStatisticsEx2 function differs from the GetTcpStatisticsEx function in that it uses a new output structure that contains 64-bit counters, rather than 32-bit counters.

Syntax

IPHLPAPI_DLL_LINKAGE ULONG GetTcpStatisticsEx2(
  [out] PMIB_TCPSTATS2 Statistics,
  [in]  ULONG          Family
);

Parameters

[out] Statistics

A pointer to a MIB_TCPSTATS2 structure that receives the TCP statistics for the local computer.

[in] Family

The protocol family for which to retrieve statistics. This parameter must be one of the following values:

Value Meaning
AF_INET
 Internet Protocol version 4 (IPv4).
AF_INET6
 Internet Protocol version 6 (IPv6).

Return value

If the function succeeds, the return value is NO_ERROR.

If the function fails, the return value is one of the following error codes.

Return code Description
ERROR_INVALID_PARAMETER
 The pStats parameter is NULL or does not point to valid memory, or the dwFamily parameter is not a valid value.
ERROR_NOT_SUPPORTED
 This function is not supported on the operating system on which the function call was made.
Other
 Use FormatMessage to obtain the message string for the returned error.

Requirements

Requirement Value
Minimum supported client Windows 10, version 1709 [desktop apps only]
Minimum supported server Windows Server 2016 [desktop apps only]
Target Platform Windows
Header iphlpapi.h
Library Iphlpapi.lib
DLL Iphlpapi.dll

See also

IP Helper Function Reference

IP Helper Start Page