Unlike SunRPC, however, DCE-RPC implements at-most-once call semantics. It is also similar to SunRPC in that it defines a two-level addressing scheme: the transport protocol demultiplexes to the correct server, DCE-RPC dispatches to a particular procedure exported by that server, and clients consult an “endpoint mapping service” (similar to SunRPC's Port Mapper) to learn how to reach a particular server. It can be used with the Network Data Representation (NDR) stub compiler described in Chapter 7, but it also serves as the underlying RPC protocol for the Common Object Request Broker Architecture (CORBA), which is an industry-wide standard for building distributed, object-oriented systems.ĭCE-RPC, like SunRPC, can be implemented on top of several transport protocols including UDP and TCP. Davie, in Computer Networks (Fifth Edition), 2012 DCE-RPCĭCE-RPC is the RPC protocol at the core of the DCE system and was the basis of the RPC mechanism underlying Microsoft's DCOM and ActiveX.
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