book

java.rmi: The Remote Method Invocation Guide

by Esmond Pitt, Kathleen McNiff

July 2001

Intermediate to advanced

320 pages

5h 46m

English

Pearson Business

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Copyright
Dedication
List of Tables
List of Figures
List of Examples
Foreword
Preface
About this bookHow it is organizedPrerequisite knowledgeTerminology and conventionsExamplesExercisesColophonAcknowledgementsFrom KathyFrom Esmond
1. Introduction to RMI
1.1. In this chapter1.2. Java and RMI1.3. Architecture of RMI systems1.4. Syntax of RMI1.5. First principles—remote method invocation1.5.1. Remote stubs1.5.2. Remote exceptions1.6. Baby's first words1.7. Exercises
2. Characteristics of RMI
2.1. In this chapter2.2. Syntax2.3. Semantics2.3.1. Remote objects2.3.2. Arguments and results2.3.3. “At most once” semantics2.4. Semantics of local method invocation2.5. Semantics of remote method invocation2.5.1. Partial failure2.5.2. Memory access2.5.3. Networks2.6. Summary2.7. Exercises
3. Serialization
3.1. In this chapter3.2. Introduction3.3. Essentials3.4. Serialization in depth3.4.1. Motivation3.4.2. Object graphs3.5. The serialization process3.5.1. Serializing an object3.5.2. De-serializing an object3.5.3. Object graphs and RMI3.6. The Serializable interface3.6.1. Default constructors in Serializable classes3.6.2. Custom serialization: readObject and writeObject3.7. The Externalizable interface3.7.1. The readExternal and writeExternal methods3.7.2. Default constructors in Externalizable classes3.7.3. When to use Externalizable3.8. MarshalledObject3.9. Class versioning3.9.1. Limitations of automatic class versioning3.9.2. Adding and rearranging fields3.9.3. Limitations—RMI/IIOP3.10. Serial Version UID3.10.1. Defining your own SUID3.10.2. Examples—class versioning3.11. Alternative approaches to versioning3.11.1. Code mobility3.11.2. Versioning by derivation3.12. Advanced facilities in Serialization3.12.1. The readResolve and writeReplace methods3.12.2. The serialPersistentFields member3.13. javadoc and serialization3.14. Improving the performance of Serialization3.15. Exercises
4. Remote interfaces
4.1. In this chapter4.2. Introduction4.3. Proxies4.4. Dispatchers4.5. Exercises

5. RMI clients
5.1. In this chapter5.2. Introduction5.3. Remote failure5.4. Partial failure5.5. Latency5.6. Applets5.7. Exercises
6. Naming I—RMI registry
6.1. In this chapter6.2. Purpose6.3. How it works6.3.1. Bind, unbind, and lookup6.3.2. Rebind and list6.4. Names in the registry6.4.1. Unique naming6.5. The Naming class6.6. The Registry interface6.7. Registry exceptions6.8. Names and URLs6.8.1. Recommendation6.9. Registry setup6.9.1. Starting a registry process6.9.2. Creating a local registry6.9.3. Deployment6.10. Registry configurations6.10.1. Standard configuration6.10.2. Development configuration6.11. Utilities6.11.1. Listing the registry6.11.2. Sun registry utility6.12. Alternative naming services6.13. Exercises
7. Servers I—unicast servers
7.1. In this chapter7.2. Introduction7.3. Writing the server7.3.1. Extend UnicastRemoteObject7.3.2. Extend RemoteServer or RemoteObject7.3.3. Extend another class7.3.4. Exporting7.3.5. Unexporting7.3.6. Summary7.4. Implementing remote interface methods7.5. Threads, sockets, and ports7.5.1. Threads7.5.2. Server sockets7.5.3. Client sockets7.6. The Unreferenced interface7.6.1. Idle-time activity7.6.2. Exiting when idle7.7. Building the server7.7.1. Stub protocols7.7.2. Installation and distribution7.8. Foundation classes7.8.1. RemoteObject7.8.2. RemoteServer7.8.3. Semantics of remote objects7.9. Serialization7.10. Alternative server classes7.11. Exercises
8. Security I—execution
8.1. In this chapter8.2. Introduction8.3. RMI and security managers8.4. Applets8.5. Clients8.6. Servers8.6.1. Non-activatable servers8.6.2. Activatable servers8.7. System properties—security8.8. Policy files8.8.1. Protection domain8.8.2. Code source8.8.3. Permission entry8.9. Granting AllPermission
9. Mobile code
9.1. In this chapter9.2. Outline9.3. How code mobility works9.3.1. Format of a codebase9.4. Uses of code mobility9.4.1. True polymorphism9.4.2. Thinner clients9.4.3. Application rollout9.4.4. Application integrity9.5. Security considerations9.6. Setup9.6.1. Codebase property9.6.2. RMI registry9.6.3. Codebase server9.6.4. Client installations9.6.5. The useCodebaseOnly property9.7. HTTP servers9.7.1. The lightweight HTTP class server9.7.2. Other http servers9.8. Other protocols9.8.1. The file: protocol9.8.2. FTP—file transfer protocol9.8.3. HTTPS—secure hypertext transfer protocol9.8.4. Authentication9.9. Deployment9.10. Downloading the client9.10.1. RMIClassLoader bootstrap9.10.2. Bootstrapping via RMI9.10.3. MarshalledObject bootstrap
10. Servers II—activation
10.1. In this chapter10.2. Introduction10.2.1. Uses of activation10.3. First principles—activation10.3.1. Activatable servers10.3.2. Activation groups10.4. How it works10.5. Writing an activatable server10.5.1. Define the required constructor10.5.2. Extend the Activatable class10.5.3. Extend another class10.6. Registration10.6.1. Registering an activation group10.6.2. Registering an activatable server10.6.3. A registration is a singleton10.6.4. Registrations are persistent10.7. Building an activatable server10.8. Run-time setup10.8.1. Codebase and activation10.8.2. rmid security policy—JDK 1.310.9. Activation and the Unreferenced interface10.10. Which servers should be activatable10.11. The activation system as an RMI registry10.12. Debugging10.12.1. Debugging utility10.13. Activation groups in Win3210.14. Activation clients10.14.1. Activation delays10.14.2. Activation exceptions10.15. Remarks on the Activation Package10.15.1. How it really works10.15.2. Creating the activation group10.15.3. Simultaneous registration and export10.15.4. The ActivationGroup class10.15.5. The ActivationGroupId and ActivationID classes10.15.6. Remote interfaces10.16. Exercises
11. Socket factories
11.1. In this chapter11.2. Purpose11.2.1. Java 111.2.2. Java 211.3. Server socket factories11.4. Client socket factories11.5. Factory equality—the equals method11.5.1. Implementing equals for socket factories11.6. Uses of socket factories11.6.1. Secure sockets11.6.2. HTTP tunnelling11.6.3. Multi-homing11.6.4. Note—the java.rmi.server.hostname property11.7. Remarks
12. Agents and patterns
12.1. In this chapter12.2. Introduction12.3. Mobile agents12.4. Callbacks12.4.1. Limitations—deadlocks12.4.2. Limitations—firewalls12.5. Mobile servers12.5.1. Limitations—firewalls12.6. Agents and design patterns12.7. Adapter12.7.1. Example adapter: remote input stream12.8. Proxy12.8.1. Smart proxy12.8.2. Example proxy: remote output stream12.8.3. Remote proxy12.8.4. Smart remote proxy12.8.5. Virtual proxy12.8.6. Activatable proxy12.8.7. Other uses of proxies12.9. Client-server patterns12.9.1. Client-server12.9.2. Client-dispatcher-server12.9.3. Peer-to-peer12.10. Singleton12.10.1. Stateless servers12.10.2. Servers in the registry12.10.3. Activatables12.11. Remote factory12.12. Abstract remote12.13. Session12.14. Exercises12.15. Remarks on the examples and exercises
13. Naming II—JNDI and Jini
13.1. In this chapter13.2. JNDI13.3. JNDI operations13.3.1. Basic operations13.3.2. Sub-contexts13.3.3. Federation13.3.4. Directory contexts13.3.5. Event notification13.4. JNDI providers13.4.1. Provider properties13.4.2. RMI registry provider13.4.3. COS Naming provider13.4.4. LDAP provider13.5. Examples13.6. Other features and setup13.7. Other JNDI service providers13.8. Jini naming13.9. Exercises
14. Servers III—RMI/IIOP
14.1. In this chapter14.2. Introduction14.3. RMI/IIOP and CORBA14.4. RMI/IIOP and Enterprise Java Beans14.5. PortableRemoteObject14.6. Writing the server14.6.1. Extend PortableRemoteObject14.6.2. Extend RemoteObject14.6.3. Extend another class14.7. Building the server14.8. Java/IDL tool14.9. Supporting both JRMP and IIOP14.10. Restrictions14.11. Implementing the service in another language14.12. IIOP clients14.12.1. Naming services14.12.2. Using the remote interface14.13. Implementing the client in another language14.14. Exercises
15. RMI through firewalls
15.1. In this chapter15.2. Firewalls15.2.1. Transport firewalls15.2.2. Application firewalls15.2.3. HTTP proxies15.2.4. Firewall configuration and control15.3. SOCKS15.3.1. Limitations of SOCKS15.4. HTTP tunnelling15.4.1. Limitations of HTTP tunnelling15.5. Firewalls and RMI15.5.1. Direct forwarding over HTTP15.5.2. Indirect forwarding over HTTP and CGI15.5.3. The java-rmi CGI script15.5.4. The RMI servlet handler15.5.5. Authenticated HTTP tunnelling15.5.6. Disabling RMI/HTTP15.5.7. Limitations of RMI/HTTP15.5.8. Summary15.6. GIOP Proxies15.6.1. Benefits15.6.2. Limitations15.7. The RMI Proxy15.7.1. Benefits15.7.2. Limitations15.8. A note on callbacks15.9. A note on firewall implementations and RMI
16. Security II—the conversation
16.1. In this chapter16.2. Identity16.2.1. Authentication16.2.2. Authorization16.3. Integrity16.3.1. Message Digest16.4. Privacy16.4.1. Encryption16.5. Secure Sockets Layer16.6. LDAP authentication16.7. JAAS16.8. RMI Security Extension16.8.1. Security constraints16.8.2. Secure servers16.8.3. Secure stub16.8.4. Client subject16.8.5. Remote call control16.8.6. Activatable secure servers16.8.7. Secure clients16.8.8. Secure clients of activatable secure servers16.8.9. Secure sections16.9. Exercises
17. Servers IV—beyond unicast
17.1. In this chapter17.2. Datagrams17.2.1. Purpose17.2.2. Semantics17.2.3. Example17.2.4. Implementation17.3. Multicast17.3.1. Purpose17.3.2. Semantics17.3.3. Implementation17.4. Broadcast17.4.1. Purpose17.4.2. Semantics17.4.3. Implementation17.5. Clients17.6. Exercises
18. Selected further topics
18.1. In this chapter18.2. Distributed garbage collection18.2.1. Overview18.2.2. Description18.2.3. Limitations of DGC18.2.4. For further information18.3. Logging18.3.1. Application logging18.3.2. Debug logging18.4. Debugging18.4.1. RMIstat utility18.5. Testing RMI in a single machine18.5.1. Loopback18.5 2. Unix domain sockets18.6. Performance18.6.1. Resource conservation in RMI18.6.2. Efficiency18.6.3. Scalability18.6.4. Tuning techniques18.6.4.1. Tuning timeouts18.6.4.2. Performance recommendations18.6.4.3. Improving the performance of Serialization18.7. RMI and JDK versions18.7.1. Overview of versions18.7.2. Clients18.7.3. Servers18.7.4. Interoperability18.8. Exercises
A. Exceptions in RMI
A.1. Class hierarchyA.2. Exceptions in RMI serversA.3. Exceptions in RMI clientsA.4. Alphabetic list of exceptionsA.4.1. java.rmi.AccessExceptionA.4.2. java.rmi.activation.ActivationExceptionA.4.3. java.rmi.activation.ActivateFailedExceptionA.4.4. java.rmi.AlreadyBoundExceptionA.4.5. java.lang.ClassCastExceptionA.4.6. java.lang.ClassNotFoundExceptionA.4.7. java.rmi.ConnectExceptionA.4.8. java.rmi.ConnectIOExceptionA.4.9. java.rmi.server.ExportExceptionA.4.10. java.rmi.MarshalExceptionA.4.11. java.rmi.NoClassDefFoundErrorA.4.12. java.rmi.NoSuchObjectExceptionA.4.13. java.rmi.NotBoundExceptionA.4.14. java.rmi.RemoteExceptionA.4.15. java.rmi.RMISecurityExceptionA.4.16. java.lang.SecurityExceptionA.4.17. java.rmi.server.ServerCloneExceptionA.4.18. java.rmi.ServerErrorA.4.19. java.rmi.ServerExceptionA.4.20. java.rmi.server.ServerNotActiveExceptionA.4.21. java.rmi.ServerRuntimeExceptionA.4.22. java.rmi.server.SkeletonMismatchExceptionA.4.23. java.rmi.server.SkeletonNotFoundExceptionA.4.24. java.rmi.server.SocketSecurityExceptionA.4.25. java.rmi.StubNotFoundExceptionA.4.26. java.rmi.UnexpectedExceptionA.4.27. java.rmi.activation.UnknownGroupExceptionA.4.28. java.rmi.UnknownHostExceptionA.4.29. java.rmi.activation.UnknownObjectExceptionA.4.30. java.rmi.UnmarshalExceptionA.5. Remarks on exceptions in RMIA.5.1. Catching deprecated exceptionsA.5.2. Name collisionsA.5.3. Remote call stack
B. System properties
B.1. RMI system propertiesB.2. Implementation-dependent system properties
C. References
C.1. BooksC.1.1. Books on JavaC.1.2. Books on related topicsC.2. PapersC.2.1. IETF RFCsC.2.2. SpecificationsC.2.3. Research papersC.3. Web resourcesC.3.1. Java SoftwareC.3.2. Home page and source code for this book
D. Glossary

Content preview from java.rmi: The Remote Method Invocation Guide

Appendix C. References

Books—Papers—Web resources

Books

Books on Java

Arnold, Gosling, and Holmes, The Java Programming Language, 3^rd edition, Addison-Wesley, 2000
Campione and Walrath, The Java Tutorial, 2^nd edition, Addison-Wesley, 1998
Campione, Walrath, Huml, et al., The Java Tutorial Continued, Addison-Wesley, 1999
Chan, The Java Developers Almanac 2000, Addison-Wesley, 2000
Chan, Lee, and Kramer, The Java Class Libraries, 2^nd Edition, Vols I, II, and Supplement, Addison-Wesley, 1998, 1999
Freeman, Hupfer, and Arnold, JavaSpaces Principles, Patterns, and Practice, Addison-Wesley 1999
Gong, Inside Java 2 Platform Security: Architecture, API Design, and Implementation, Addison-Wesley, 1999
Gosling, Joy, Steele, and Bracha, The Java Language Specification ...

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