The messages that are sent from a server to a client contain either several values or a single value. Presently, the RPC Broker messages are bound by the Windows WINSOCK.DLL specifications and the size of the symbol table. The server receives a message from the client and parses out the name of the remote procedure call and its parameters. The Broker module on the server looks up the remote procedure call in the REMOTE PROCEDURE file (#8994) and executes the RPC using the passed parameters. At this point the server side of the application processes the request and returns the result of the operation. If the operation is a query, then the result is a set of records that satisfy that query. If the operation is to simply file the data on the server or it is unnecessary to return any information, then, typically, notification of the success of the operation will be returned to the client.
The basic RPC Broker message structure consists of the following: