Hackingtomcat

Hacking Tomcat Secrets Revealed

Who am I – bla bla ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Who are We ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Welcome to Tomcat We are Hiring!!!

What we will cover ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

What We Will Not Cover ,[object Object],[object Object],[object Object],[object Object],[object Object]

History of Tomcat ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Basics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Basics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Basics ,[object Object],[object Object],[object Object],[object Object],[object Object]

Basics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Basics Tomcat – The Server Services Engine (Catalina) Context JSPs Servlets Valves AJP Connector 8009 SSL Connector 8443 8080 HTTP Connector Hosts Realm Valves Valves

Basics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Advanced ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Performance Tip ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Connectors ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Connectors <Handler> There are some pretty ugly interdependencies here. While re-factoring would resolve that, time has been spent improving performance. Connector Protocol EndPoint Processor Adapter Engine

Connectors ,[object Object],1. New HTTP Request All java.io/java.nio/apr socket logic is in the EndPoint Processor sets up input/output buffers HTTP Parsing logic is in here Parses request, if request is available Once the request is parsed The CoyoteAdapter (bridge between connector and engine) Passes the request to the servlet engine Connector Protocol EndPoint Processor Adapter Engine

Performance Tip ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Advanced ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Performance Tip ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Advanced ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],1. Everything starts with the thread 2. NIO Connector defaults to ThreadPoolExecutor 3. SocketProcessor – Simple Runnable to invoke Handler.process 4. HttpProcessor – parses HTTP request 5. CoyoteAdapter Creates Request Response pair 6. StandardEngineValve First valve in the engine container 7. ErrorReportValve Catches Throwable Reports 400+ errors 8. StandardHostValve Sets context class loader 9. StandardContextValve Invokes (spec) ServletRequestListeners 10. StandardWrapperValve Invokes (spec) FilterChain 11. ApplicationFilterChain Represents Servlet (spec) FilterChain, invokes servlet 12. The Servlet Execution of the servlet

Advanced ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Advanced ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Advanced ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Performance Tip ,[object Object],[object Object],[object Object],[object Object],[object Object]

Performance Tip ,[object Object],[object Object],[object Object],[object Object]

Conclusion ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Want to join? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Q & A ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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