RpcRevertToSelfEx function (rpcdce.h)

Article
04/02/2021

The RpcRevertToSelfEx function allows a server to impersonate a client and then revert in a multithreaded operation where the call to impersonate a client can come from a thread other than the thread originally dispatched from the RPC.

Syntax

RPC_STATUS RpcRevertToSelfEx(
  RPC_BINDING_HANDLE BindingHandle
);

Parameters

BindingHandle

Binding handle on the server that represents a binding to the client that the server impersonated. A value of zero specifies the client handle of the current thread; in this case, the functionality of RpcRevertToSelfEx is identical to that of the RpcRevertToSelf function.

Return value

Value	Meaning
RPC_S_OK	The call succeeded.
RPC_S_NO_CALL_ACTIVE	The server does not have a client to impersonate.
RPC_S_INVALID_BINDING	The binding handle is invalid.
RPC_S_WRONG_KIND_OF_BINDING	This is the wrong kind of binding for this operation.
RPC_S_CANNOT_SUPPORT	The call is not supported for this operating system, this transport, or this security subsystem.

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

Remarks

After calling RpcImpersonateClient and completing any tasks that require client impersonation, the server calls RpcRevertToSelfEx to end impersonation and to reestablish its own security identity. For example, consider a primary thread, called thread1, which is dispatched from a remote client and wakes up a worker thread, called thread2. If thread2 requires that the server impersonate the client, the server calls RpcImpersonateClient(THREAD1_CALL_HANDLE), performs the required task, calls RpcRevertToSelfEx(THREAD1_CALL_HANDLE) to end the impersonation, and then wakes up thread1.

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