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Programming with Remote Procedure Calls (RPC)

RPC versions and numbers

Each RPC procedure is uniquely identified by a program number, version number, and procedure number.

The program number identifies a group of related remote procedures, each of which has a different procedure number. Each program also has a version number, so when a minor change is made to a remote service (adding a new procedure, for example), a new program number does not have to be assigned.

To call a procedure to find the number of remote users, for example, you would look up the appropriate program, version and procedure number in a reference manual.

RPC programs should be assigned program numbers according to rules detailed in ``Program number assignment''.


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