GetNameByType function

The GetNameByType function retrieves the name of a network service for the specified service type.

Note  The GetNameByType function is a Microsoft-specific extension to the Windows Sockets 1.1 specification. This function is obsolete. For the convenience of Windows Sockets 1.1 developers, the reference material is as follows.

Note  The functions detailed in Protocol-Independent Name Resolution provide equivalent functionality in Windows Sockets 2.


INT GetNameByType(
  _In_  LPGUID lpServiceType,
  _Out_ LPTSTR lpServiceName,
  _In_  DWORD  dwNameLength


lpServiceType [in]

A pointer to a globally unique identifier (GUID) that specifies the type of the network service. The Svcguid.h header file includes definitions of several GUID service types, and macros for working with them.

The Svcguid.h header file is not automatically included by the Winsock2.h header file.

lpServiceName [out]

A pointer to a buffer to receive a zero-terminated string that uniquely represents the name of the network service.

dwNameLength [in]

A pointer to a variable that, on input, specifies the size, in bytes, of the buffer pointed to by lpServiceName. On output, the variable contains the actual size of the service name string, in bytes.

Return value

If the function succeeds, the return value is not SOCKET_ERROR (–1).

If the function fails, the return value is SOCKET_ERROR (–1). To get extended error information, call GetLastError.


Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]







Unicode and ANSI names

GetNameByTypeW (Unicode) and GetNameByTypeA (ANSI)

See also

Winsock Reference
Winsock Functions