RpcBindingServerFromClient function (rpcdce.h)

An application calls RpcBindingServerFromClient to convert a client binding handle into a partially-bound server binding handle.

Syntax

C++

RPC_STATUS RpcBindingServerFromClient(
  RPC_BINDING_HANDLE ClientBinding,
  RPC_BINDING_HANDLE *ServerBinding
);

Parameters

ClientBinding

Client binding handle to convert to a server binding handle. If a value of zero is specified, the server impersonates the client that is being served by this server thread.

Note  This parameter cannot be NULL in Windows NT 4.0.

 

ServerBinding

Returns a server binding handle.

Return value

Value	Meaning
RPC_S_OK	The call succeeded.
RPC_S_INVALID_BINDING	The binding handle was invalid.
RPC_S_WRONG_KIND_OF_BINDING	This was the wrong kind of binding for the operation.
RPC_S_CANNOT_SUPPORT	Cannot determine the client's host. See Remarks for a list of supported protocol sequences.

 

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

 

Remarks

The following protocol sequences support RpcBindingServerFromClient:

• ncadg_ip_udp
• ncadg_ipx
• ncacn_ip_tcp
• ncacn_spx.
• ncacn_np (effective with Windows 2000)
• ncacn_http
• ncalrpc

An application gets a client binding handle from the RPC run-time. When the remote procedure call arrives at a server, the run-time creates a client binding handle that contains information about the calling client. The run-time passes this handle to the server manager function as the first argument.

Calling RpcBindingServerFromClient converts this client handle to a server handle that has these properties:

• The server handle is a partially-bound handle. It contains a network address for the calling client, but lacks an endpoint.
• The server handle contains the same object UUID used by the calling client. This can be the nil UUID. For more information on how a client specifies an object UUID for a call, see RpcBindingsetObject, RpcNsBindingImportBegin, RpcNsBindingLookupBegin, and RpcBindingFromStringBinding.
• The server handle contains no authentication information.

The server application must call RpcBindingFree to free the resources used by the server binding handle once it is no longer needed.

Note  To query a client's address, an application starts by calling the RpcBindingServerFromClient function to obtain a partially bound server binding handle. The server binding handle can be used to obtain a string binding by invoking RpcBindingToStringBinding. The server can then call RpcStringBindingParse to extract the client's network address from the string binding.

 

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	rpcdce.h (include Rpc.h)
Library	Rpcrt4.lib
DLL	Rpcrt4.dll

See also

RpcBindingFree

RpcBindingFromStringBinding

RpcBindingSetObject

RpcEpRegister

RpcEpRegisterNoReplace

RpcNsBindingImportBegin

RpcNsBindingLookupBegin