Method for configuring at runtime, identifying and using a plurality of remote procedure call endpoints on a single server process

• US 6,202,089 B1
• Filed: 06/30/1998
• Issued: 03/13/2001
• Est. Priority Date: 06/30/1998
• Status: Expired due to Term

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Juster, Doron
• Primary Examiner(s): Rinehart, Mark
• Assistant Examiner(s): Cardone, Jason D.
• Application Number:
  US09/108,039
• Time in Patent Office: 987 Days
• Field of Search: 709/203, 709/217, 709/219, 709/201, 709/202, 709/330, 709/104, 712/225
• US Class Current: 709/219
• CPC Class Codes: G06F 9/547 Remote procedure calls [RPC]; Web services
• CPC Class Codes: H04L 67/01 Protocols
• CPC Class Codes: H04L 67/133 Protocols for remote procedure calls [RPC]

Abstract

An invention for assigning a plurality of remote procedure call (RPC) endpoints at runtime to a single server process, and for the server process itself to efficiently inform a requesting client of at least one of the plurality of the RPC endpoints is disclosed. In one embodiment, a single server process establishes a plurality of non-statically defined endpoints at runtime corresponding to various RPC services provided by the server process. In addition, the server process establishes another RPC endpoint for responding to RPC endpoint address queries from clients; this address query endpoint could either be predetermined or dynamically assigned at runtime. To acquire and use one of the plurality of endpoints of the server process assigned at runtime, a client first places a remote procedure call to the address request endpoint of the server process and includes a description of the desired service or endpoint. In response, the server process returns an identifier of one or more matching endpoints or services. Based on this identifier, the client then places a remote procedure call on the desired endpoint of the server process.

Claims

1. In a networked computer system, a method for a server process to provide a plurality of non-statically defined endpoints for remote procedure calls to a client, the method comprising the steps of:

the computer system defining the plurality of endpoints of the server process at runtime;

the computer system defining a query endpoint for receiving a remote procedure call (RPC) request to inform the client of at least one of the plurality of endpoints;

the server process receiving an RPC from the client at the query endpoint requesting access to at least one of the plurality of endpoints, wherein the RPC includes a description of the type of service required by the client, and;

the server process responding to the request by providing an identifier for at least one of the plurality endpoints.

2. The method of claim 1, wherein the step of defining the plurality of endpoints is performed by the server process.

3. The method of claim 2, wherein the plurality of endpoints are selected by the server process at runtime.

4. The method of claim 1, wherein the query endpoint is a RPC dynamic endpoint.

5. The method of claim 1, wherein the computer system provides only a single dynamic endpoint per computer process.

6. The method of claim 1, wherein the at least one of the plurality of endpoints identified by the server process is not published in a name service.

7. The method of claim 1, further comprising the steps of:

the client receiving the identifier for at least one of the plurality of endpoints; and

the client performing a remote procedure call using the received identifier.

8. The method of claim 1, wherein the server process and client are part of a message queuing network.

9. The method of claim 1, wherein the description includes an enumerator identifying the type of service required by the client.

10. The method of claim 1, wherein the description includes an integer identifying the type of service required by the client.

11. The method of claim 1, wherein the description includes a string of text identifying the type of service required by the client.

12. The method of claim 1, wherein the description includes a service characteristic identifying the type of service required by the client.

13. In a networked computer system, a method for a client process to identify a previously unknown and unpublished remote procedure call (RPC) service endpoint of a server process, the method comprising the steps of:

the server process receiving an RPC at a query endpoint from the client process, wherein the RPC includes a description of the type of remote procedure call service desired by the client; and

the server process identifying the RPC service endpoint corresponding to the desired type of service to the client process.

14. The method of claim 13, further comprising the step of the server process assigning a plurality of endpoints to the server process at runtime.

15. The method of claim 14, wherein the identified RPC service endpoint is one of the plurality of endpoints assigned at runtime, and further comprising the step of the client process performing a remote procedure call on the identified RPC service endpoint.

16. The method of claim 13, further comprising the step of the client process performing a remote procedure call on the identified RPC service endpoint.

17. The method of claim 13, wherein the description includes an enumerator identifying the type of service required by the client.

18. The method of claim 13, wherein the description includes an integer identifying the type of service required by the client.

19. The method of claim 13, wherein the description includes a string of text identifying the type of service required by the client.

20. The method of claim 13, wherein the description includes a service characteristic identifying the type of service required by the client.

21. A computer-readable medium having computer-executable instructions for performing steps for a server process to provide a plurality of non-statically defined endpoints for remote procedure calls to a client, the steps comprising:

the computer system defining the plurality of endpoints of the server process at runtime;

the computer system defining a query endpoint for receiving a remote procedure call (RPC) request to inform the client of at least one of the plurality of endpoints;

the server process receiving an RPC from the client at the query endpoint requesting access to at least one of the plurality of endpoints, wherein the RPC includes a description of the type of service required by the client, and;

the server process responding to the request by providing an identifier for at least one of the plurality endpoints.

22. The computer-readable medium of claim 21, wherein the step of defining the plurality of endpoints is performed by the server process.

23. The computer-readable medium of claim 22, wherein the plurality of endpoints are selected by the server process at runtime.

24. The computer-readable medium of claim 21, wherein the query endpoint is a RPC dynamic endpoint.

25. The computer-readable medium of claim 21, wherein the computer system provides only a single dynamic endpoint per computer process.

26. The computer-readable medium of claim 21, wherein the at least one of the plurality of endpoints identified by the server process is not published in a name service.

27. The computer-readable medium of claim 21 having further computer-executable instructions for performing the steps of:

the client receiving the identifier for at least one of the plurality of endpoints; and

the client performing a remote procedure call using the received identifier.

28. The computer-readable medium of claim 21, wherein the server process and client are part of a message queuing network.

29. A computer-readable medium having computer-executable instructions for performing steps for a client process to identify a previously unknown and unpublished remote procedure call (RPC) service endpoint of a server process in a networked computer system, the steps comprising:

the server process receiving an RPC on a query endpoint from the client process, wherein the RPC includes a description of the type of remote procedure call service desired by the client; and

the server process identifying the RPC service endpoint corresponding to the desired type of service to the client process.

30. The computer-readable medium of claim 29, further comprising the step of the server process assigning a plurality of endpoints to the server process at runtime.

31. The computer-readable medium of claim 30, wherein the identified RPC service endpoint is one of the plurality of endpoints assigned at runtime, and having further computer-executable instructions for performing the step of the client process performing a remote procedure call on the identified RPC service endpoint.

32. The computer-readable medium of claim 29, further comprising the step of the client process performing a remote procedure call on the identified RPC service endpoint.

33. In a computer network, a method for a client to perform a remote procedure call on a server computer on a service endpoint associated with a server process without knowing beforehand the service endpoint, the method comprising the steps of:

the client performing a remote procedure call (RPC) to a query endpoint of the server computer, wherein the RPC includes a criteria for the type of service required by the client;

the client receiving the identifier of the service endpoint from the server computer, wherein the service endpoint matches the criteria; and

the client computer performing a remote procedure call on the service endpoint.

34. The method of claim 33, wherein the criteria is an enumerator identifying the type of service desired by the client.

35. The method of claim 33, wherein the criteria is an integer identifying the type of service desired by the client.

36. The method of claim 33, wherein the criteria is a string of text identifying the type of service required by the client.

37. The method of claim 33, wherein the criteria is a service characteristic identifying the type of service required by the client.

38. In a message queuing computer system, a method for a client process on a message queuing client computer to perform remote procedure calls (RPC) to a server process on a message queuing server computer, the method comprising the steps of:

the server process defining a dynamic endpoint for receiving RPC inquires from the client process;

the server process defining a plurality of fixed RPC endpoints based from those currently unused on the message queuing server computer;

the message queuing client computer performing a RPC call on the dynamic endpoint, wherein the RPC includes a criteria for the type of service required by the client;

the server process receiving the client RPC call on the dynamic endpoint and selecting a matching endpoint from the plurality of fixed RPC endpoints based on the provided criteria;

the server process returning an identification of the matching endpoint; and

the message queuing client computer performing a remote procedure call to the matching endpoint based on the received identification.

39. The method of claim 38, wherein the criteria is an enumerator identifying the type of service desired by the client.

40. The method of claim 38, wherein the criteria is an integer identifying the type of service desired by the client.

41. The method of claim 38, wherein the criteria is a string of text identifying the type of service required by the client.

42. The method of claim 38, wherein the criteria is a service characteristic identifying the type of service required by the client.

43. In a networked computer system, a method for a client process on a client computer to perform remote procedure calls (RPC) to a server process on a server computer, the method comprising the steps of:

the server process defining a dynamic endpoint for receiving RPC inquires from the client process;

the server process defining a plurality of fixed RPC endpoints based from those currently unused on the server computer;

the client computer performing a RPC call on the dynamic endpoint, wherein the RPC includes a criteria for the type of service required by the client;

the server process receiving the client RPC call on the dynamic endpoint and selecting a matching endpoint from the plurality of fixed RPC endpoints based on the provided criteria;

the server process returning an identification of the matching endpoint; and

the client computer performing a remote procedure call to the matching endpoint based on the received identification.

44. The method of claim 43, wherein the criteria is an enumerator identifying the type of service desired by the client.

45. The method of claim 43, wherein the criteria is an integer identifying the type of service desired by the client.

46. The method of claim 43, wherein the criteria is a string of text identifying the type of service required by the client.

47. The method of claim 43, wherein the criteria is a service characteristic identifying the type of service required by the client.

48. A computer-readable medium having computer-executable instructions for performing steps for a client to perform a remote procedure call on a server computer on a service endpoint associated with a server process without knowing beforehand the service endpoint in a networked computer system, the steps comprising:

the client performing a remote procedure call (RPC) to a query endpoint of the server computer, wherein the RPC includes a criteria for the type of service required by the client;

the client receiving the identifier of the service endpoint from the server computer, wherein the service endpoint matches the criteria; and

the client computer performing a remote procedure call on the service endpoint.

49. A computer-readable medium having computer-executable instructions for performing steps for a client process on a client computer to perform remote procedure calls (RPC) to a server process on a server computer in a networked computer system, the steps comprising:

the server process defining a dynamic endpoint for receiving RPC inquires from the client process;

the server process defining a plurality of fixed RPC endpoints based from those currently unused on the server computer;

the client computer performing a RPC call on the dynamic endpoint, wherein the RPC includes a criteria for the type of service required by the client;

the server process receiving the client RPC call on the dynamic endpoint and selecting a matching endpoint from the plurality of fixed RPC endpoints based on the provided criteria;

the server process returning an identification of the matching endpoint; and

the client computer performing a remote procedure call to the matching endpoint based on the received identification.

50. A computer-readable medium having computer-executable instructions for performing steps for a client process on a message queuing client computer to perform remote procedure calls (RPC) to a server process on a message queuing server computer in a message queuing computer system, the method comprising the steps of:

the server process defining a dynamic endpoint for receiving RPC inquires from the client process;

the server process defining a plurality of fixed RPC endpoints based from those currently unused on the message queuing server computer;

the message queuing client computer performing a RPC call on the dynamic endpoint, wherein the RPC includes a criteria for the type of service required by the client;

the server process receiving the client RPC call on the dynamic endpoint and selecting a matching endpoint from the plurality of fixed RPC endpoints based on the provided criteria;

the server process returning an identification of the matching endpoint; and

the message queuing client computer performing a remote procedure call to the matching endpoint based on the received identification.