Rpc (Distributed computing)
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The document summarizes remote procedure calls (RPC), which allow programmers to call procedures or functions on other machines remotely, making distributed systems appear as a local procedure call. It discusses how RPC works by using stub functions to simulate a local procedure call, how data is marshaled and sent over the network, issues around parameter passing and data representation, and other aspects of designing and implementing an RPC system.
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Rpc (Distributed computing)
- 1. Remote Procedure Calls Paul Krzyzanowski [email_address] [email_address] Distributed Systems Except as otherwise noted, the content of this presentation is licensed under the Creative Commons Attribution 2.5 License.
- 4. How do regular procedure calls work in programming languages?
- 9. Stub functions network routines server functions server stub (skeleton) network routines 1. Client calls stub (params on stack) client functions client stub client server
- 10. Stub functions server functions server stub (skeleton) network routines 2. Stub marshals params to net message client functions client stub network routines client server
- 11. Stub functions 3. Network message sent to server client functions client stub network routines server functions server stub (skeleton) network routines client server
- 12. Stub functions 4. Receive message: send to stub client functions client stub network routines server functions server stub (skeleton) network routines client server
- 13. Stub functions 5. Unmarshal parameters, call server func client functions client stub network routines server functions server stub (skeleton) network routines client server
- 14. Stub functions 6. Return from server function client functions client stub network routines server functions server stub (skeleton) network routines client server
- 15. Stub functions 7. Marshal return value and send message client functions client stub network routines server functions server stub (skeleton) network routines client server
- 16. Stub functions 8. Transfer message over network client functions client stub network routines server functions server stub (skeleton) network routines client server
- 17. Stub functions 9. Receive message: direct to stub client functions client stub network routines server functions server stub (skeleton) network routines client server
- 18. Stub functions 10. Unmarshal return, return to client code client functions client stub network routines server functions server stub (skeleton) network routines client server
- 20. RPC has issues
- 28. Where to bind? – Solution 1 Maintain centralized DB that can locate a host that provides a particular service (Birrell & Nelson’s 1984 proposal)
- 37. RPC compiler IDL client code (main) server functions RPC compiler client stub headers server skeleton data conv. data conv. compiler compiler server client Code you write Code RPC compiler generates
- 41. The end.