FreeDCE
Encyclopedia
FreeDCE is The Open Group
's reference implementation of DCE/RPC
1.1 updated to be interoperable with free software
development practices. FreeDCE is Distributed Computing Environment/Remote Procedure Calls 1.1 reworked, and it includes an up-to-date implementation of DCEThreads
that actually works with the Linux
2.4 and 2.6 kernels on x86 hardware and also on AMD64 processors.
in a "Request for Technology". Apollo Computer
brought in NCA - "Network Computing Architecture" which became Network Computing System (NCS) and then a major part of DCE/RPC itself. The naming convention for transports that can be designed (as architectural plugins) and then made available to DCE/RPC echoes these origins, e.g. ncacn_np (SMB Named Pipes transport); ncacn_tcp (DCE/RPC over TCP/IP) and ncacn_http to name a small number.
MSRPC
is a Microsoft proprietary technology also derived from the Distributed Computing Environment 1.1 reference implementation, but has been copyrighted by Microsoft. MSRPC is featured in Microsoft's Distributed Component Object Model
(DCOM), a proprietary technology for software components distributed across several networked computers to communicate with each other. The addition of the "D" to COM was due to extensive use of DCE/RPC. DCOM, which originally was called "Network OLE", extends Microsoft's COM, and provides the communication substrate under Microsoft's COM+ application server infrastructure. It has been deprecated in favor of Microsoft .NET.
DCOM
would be "donated" by Microsoft to the Open Group, an industry consortium to set vendor- and technology-neutral open standards for computing infrastructure. It was formed when X/Open merged with the Open Software Foundation in 1996. However, DCOM comes without several of application-level class libraries, such as ODBC, OLE DB, ADO, and ASP to run on top of it. Microsoft never released these specifications to the Open Group or the public.
The Open Group
The Open Group is a vendor and technology-neutral industry consortium, currently with over three hundred member organizations. It was formed in 1996 when X/Open merged with the Open Software Foundation...
's reference implementation of DCE/RPC
DCE/RPC
DCE/RPC, short for "Distributed Computing Environment / Remote Procedure Calls", is the remote procedure call system developed for the Distributed Computing Environment...
1.1 updated to be interoperable with free software
Free software
Free software, software libre or libre software is software that can be used, studied, and modified without restriction, and which can be copied and redistributed in modified or unmodified form either without restriction, or with restrictions that only ensure that further recipients can also do...
development practices. FreeDCE is Distributed Computing Environment/Remote Procedure Calls 1.1 reworked, and it includes an up-to-date implementation of DCEThreads
DCEThreads
DCEThreads is an implementation of POSIX Draft 4 threads.-History:DCE/RPC was under development, but the POSIX committee had not finalised POSIX threads at the time...
that actually works with the Linux
Linux kernel
The Linux kernel is an operating system kernel used by the Linux family of Unix-like operating systems. It is one of the most prominent examples of free and open source software....
2.4 and 2.6 kernels on x86 hardware and also on AMD64 processors.
History
DCE/RPC was commissioned by the Open Software FoundationOpen Software Foundation
The Open Software Foundation was a not-for-profit organization founded in 1988 under the U.S. National Cooperative Research Act of 1984 to create an open standard for an implementation of the UNIX operating system.-History:...
in a "Request for Technology". Apollo Computer
Apollo Computer
Apollo Computer, Inc., founded 1980 in Chelmsford, Massachusetts by William Poduska and others, developed and produced Apollo/Domain workstations in the 1980s. Along with Symbolics and Sun Microsystems, Apollo was one of the first vendors of graphical workstations in the 1980s...
brought in NCA - "Network Computing Architecture" which became Network Computing System (NCS) and then a major part of DCE/RPC itself. The naming convention for transports that can be designed (as architectural plugins) and then made available to DCE/RPC echoes these origins, e.g. ncacn_np (SMB Named Pipes transport); ncacn_tcp (DCE/RPC over TCP/IP) and ncacn_http to name a small number.
MSRPC
MSRPC
Microsoft RPC is a modified version of DCE/RPC. Additions include support for Unicode strings, implicit handles, inheritance of interfaces , and complex calculations in the variable-length string and structure paradigms already present in DCE/RPC.- Example :The DCE 1.0 reference implementation...
is a Microsoft proprietary technology also derived from the Distributed Computing Environment 1.1 reference implementation, but has been copyrighted by Microsoft. MSRPC is featured in Microsoft's Distributed Component Object Model
Distributed component object model
Distributed Component Object Model is a proprietary Microsoft technology for communication among software components distributed across networked computers. DCOM, which originally was called "Network OLE", extends Microsoft's COM, and provides the communication substrate under Microsoft's COM+...
(DCOM), a proprietary technology for software components distributed across several networked computers to communicate with each other. The addition of the "D" to COM was due to extensive use of DCE/RPC. DCOM, which originally was called "Network OLE", extends Microsoft's COM, and provides the communication substrate under Microsoft's COM+ application server infrastructure. It has been deprecated in favor of Microsoft .NET.
DCOM
Distributed component object model
Distributed Component Object Model is a proprietary Microsoft technology for communication among software components distributed across networked computers. DCOM, which originally was called "Network OLE", extends Microsoft's COM, and provides the communication substrate under Microsoft's COM+...
would be "donated" by Microsoft to the Open Group, an industry consortium to set vendor- and technology-neutral open standards for computing infrastructure. It was formed when X/Open merged with the Open Software Foundation in 1996. However, DCOM comes without several of application-level class libraries, such as ODBC, OLE DB, ADO, and ASP to run on top of it. Microsoft never released these specifications to the Open Group or the public.