RpcNsBindingImportBeginA function (rpcnsi.h)

Article
02/09/2023

The RpcNsBindingImportBegin function creates an import context for importing client-compatible binding handles for servers that offer the specified interface and object.

Note This function is not supported on Windows Vista and later operating systems.

Syntax

RPC_STATUS RpcNsBindingImportBeginA(
  unsigned long EntryNameSyntax,
  RPC_CSTR      EntryName,
  RPC_IF_HANDLE IfSpec,
  UUID          *ObjUuid,
  RPC_NS_HANDLE *ImportContext
);

Parameters

EntryNameSyntax

Syntax of EntryName.

To use the syntax specified in the registry value entry HKEY_LOCAL_MACHINE\Software\Microsoft\Rpc\NameService\DefaultSyntax, specify RPC_C_NS_SYNTAX_DEFAULT.

EntryName

Pointer to an entry name at which the search for compatible binding handles begins.

To use the entry name specified in the registry value entry HKEY_LOCAL_MACHINE\Software\Microsoft\Rpc\NameService\DefaultEntry, provide a null pointer or an empty string. In this case, the EntryNameSyntax parameter is ignored and the run-time library uses the default syntax.

IfSpec

Stub-generated data structure indicating the interface to import. If the interface specification has not been exported or is of no concern to the caller, specify a null value for this parameter. In this case, the bindings returned are only guaranteed to be of a compatible and supported protocol sequence and to contain the specified object UUID. The contacted server might not support the desired interface.

ObjUuid

Pointer to an optional object UUID.

For a nonzero UUID, compatible binding handles are returned from an entry only if the server has exported the specified object UUID.

When ObjUuid has a null pointer value or a nil UUID, the returned binding handles contain one of the object UUIDs exported by the compatible server. If the server did not export any object UUIDs, the returned compatible binding handles contain a nil object UUID.

ImportContext

Name-service handle returned for use with the RpcNsBindingImportNext and RpcNsBindingImportDone functions.

Return value

Value	Meaning
RPC_S_OK	The call succeeded.
RPC_S_INVALID_NAME_SYNTAX	The name syntax is invalid.
RPC_S_NAME_SERVICE_UNAVAILABLE	The name exceeds the maximum length.
RPC_S_UNSUPPORTED_NAME_SYNTAX	The name syntax is unsupported.
RPC_S_INCOMPLETE_NAME	The name is incomplete.
RPC_S_ENTRY_NOT_FOUND	The name-service entry was not found.
RPC_S_NAME_SERVICE_UNAVAILABLE	The name service is unavailable.
RPC_S_INVALID_OBJECT	Invalid object.

Note For a list of valid error codes, see RPC Return Values.

Remarks

Before calling the RpcNsBindingImportNext function, the client application must first call RpcNsBindingImportBegin to create an import context. The parameters to this function control the operation of the RpcNsBindingImportNext function.

When finished importing binding handles, the client application calls the RpcNsBindingImportDone function to delete the import context.

Note

The rpcnsi.h header defines RpcNsBindingImportBegin as an alias which automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Target Platform	Windows
Header	rpcnsi.h (include Rpc.h)
Library	Rpcns4.lib
DLL	Rpcns4.dll