Possible problems switching from "ncalrpc" to "ncacn_np"

Question

I have an application that uses RPC for interprocess communications. Turns out that synchronous RPC pipes used with "ncalrpc" protocol sequence are not alowed on Vista. I want to switch to "ncacn_np" and use RpcServerRegisterEpEx() with RPC_IF_ALLOW_LOCAL_ONLY flag.

Has anyone tried the same yet? Are there any possible problems associated with such transition?

Answer 1

You've seen this information about flag usage :

...When this interface flag is registered, the RPC runtime rejects calls made by remote clients. All local calls using ncadg_* and ncacn_* protocol sequences are also rejected, with the exception of ncacn_np. RPC allows ncacn_NP calls only if the call does not come from SRV. Calls from ncalrpc are always processed...

RPC for local really use LPC (Microsoft Windows Internals 4 ed, fron page 802):
Local RPC can be used for communication between two processes located on the same system, and the RPC run-time DLL uses the local procedure call (LPC) facilities in kernel mode as the local networking API.

[EDITED]
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