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Framework Presentation

Framework Presentation. Project Participants: Stuart King Feng I Liu Zhijian Huang CSE870 Advanced Software Engineering, Spring 2001 Instructor: Dr. B. Cheng. Overview . Proxy Domain Description Framework Overview Sample Application Highlights Demonstration Discussion. Proxy Domain.

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Framework Presentation

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  1. Framework Presentation Project Participants: Stuart King Feng I Liu Zhijian Huang CSE870 Advanced Software Engineering, Spring 2001 Instructor: Dr. B. Cheng

  2. Overview • Proxy Domain Description • Framework Overview • Sample Application Highlights • Demonstration • Discussion

  3. Proxy Domain Web Caching Proxy 1) Read a request from a CLIENTs browser 2) Read data from a REMOTE computer or CACHE 3) Write data back to the CLIENTS browser REMOTE (on net) CLIENTs browser request PROXY data data CACHE

  4. Framework Overview PROXY FRAMEWORK proxy. START ( ) ProxCache interface ProxFilter interface proxy. STOP ( )

  5. APPLICATION FRAMEWORK CLIENT REMOTE PROXY (PORT, CACHE, FILTER) . RUN() ACCEPT() NEW ProxFILTER & ProxCACHE thread REQUEST ProxFILTER REQUEST parse GET DATE ProxCACHE CHECK REQUEST/ GET RESPONSE If check = false DATA JUMP ProxFILTER RESPONSE ProxCACHE PUT (RESPONSE, DATE) End IF ProxFILTER RESPONSE RESPONSE

  6. Application Highlights • AWS is a caching WEB server AND proxy • The Server class was converted by: 1) Removing its THREAD capability 2) Implementing FILTER & CACHE to call the LOG and CACHE classes 3) Making and Starting a PROXY thread

  7. Framework PARSE UrlDat REMOTE String cacheDirectory; ProcHOST ProxCache ProxFilter PROXY ProxCacheDefault ProxFilterDefault Start & Stop LOG Server HTTP CACHE Header Req Server HTTP CFG Int Server HTTP Attributes DocHTTP1Factory DocHTTP1 AWS long cacheLowWaterMark; long cacheCurrentWaterMark; String cacheBackupFile; String serverDataBaseBackupFile; double serverInfoSmoothingFactor; double weightConnectionTime; double weightBandWidth; double weightReferencesFrequency; double weightSize; boolean alternativeProxyOn; String alternativeProxyName;

  8. Demonstration of proxy • AWS is a proxy • AWS does cache • When AWS connects to itself, it generates (AND CATCHES) errors. • Questions

  9. Discussion • PROXY, WEB, and JAVA problems Abandoned Add Filter, Protocol Ignorance, IE and windows Proxy, Java String.getBytes() • Started with Black Box library interface, Several good guesses on Framework (but no Parse Response) • QUESTIONS GUI, Multiple Caching Algorithms

  10. THANK YOU

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