| 1 | <html><head><META http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><title>Apache Tomcat Architecture - Request Process Flow</title><meta value="Yoav Shapira" name="author"><meta value="yoavs@apache.org" name="email"></head><body vlink="#525D76" alink="#525D76" link="#525D76" text="#000000" bgcolor="#ffffff"><table cellspacing="0" width="100%" border="0"><!--PAGE HEADER--><tr><td><!--PROJECT LOGO--><a href="http://tomcat.apache.org/"><img border="0" alt=" |
|---|
| 2 | The Apache Tomcat Servlet/JSP Container |
|---|
| 3 | " align="right" src="../../images/tomcat.gif"></a></td><td><font face="arial,helvetica,sanserif"><h1>Apache Tomcat 6.0</h1></font></td><td><!--APACHE LOGO--><a href="http://www.apache.org/"><img border="0" alt="Apache Logo" align="right" src="../../images/asf-logo.gif"></a></td></tr></table><table cellspacing="4" width="100%" border="0"><!--HEADER SEPARATOR--><tr><td colspan="2"><hr size="1" noshade></td></tr><tr><!--RIGHT SIDE MAIN BODY--><td align="left" valign="top" width="80%"><table cellspacing="4" width="100%" border="0"><tr><td valign="top" align="left"><h1>Apache Tomcat Architecture</h1><h2>Request Process Flow</h2></td><td nowrap="true" valign="top" align="right"><img border="0" hspace="0" vspace="0" height="1" width="1" src="../../images/void.gif"></td></tr></table><table cellpadding="2" cellspacing="0" border="0"><tr><td bgcolor="#525D76"><font face="arial,helvetica.sanserif" color="#ffffff"><a name="Request Process Flow"><strong>Request Process Flow</strong></a></font></td></tr><tr><td><blockquote> |
|---|
| 4 | |
|---|
| 5 | <p> |
|---|
| 6 | This page describes the process used by Tomcat to handle |
|---|
| 7 | an incoming request. This process is largely defined by |
|---|
| 8 | the Servlet Specification, which outlines the order |
|---|
| 9 | of events that must take place. |
|---|
| 10 | </p> |
|---|
| 11 | |
|---|
| 12 | <table cellpadding="2" cellspacing="0" border="0"><tr><td bgcolor="#828DA6"><font face="arial,helvetica.sanserif" color="#ffffff"><a name="description"><strong>description</strong></a></font></td></tr><tr><td><blockquote> |
|---|
| 13 | <p> |
|---|
| 14 | TODO |
|---|
| 15 | </p> |
|---|
| 16 | </blockquote></td></tr></table> |
|---|
| 17 | |
|---|
| 18 | <table cellpadding="2" cellspacing="0" border="0"><tr><td bgcolor="#828DA6"><font face="arial,helvetica.sanserif" color="#ffffff"><a name="diagram"><strong>diagram</strong></a></font></td></tr><tr><td><blockquote> |
|---|
| 19 | <p> |
|---|
| 20 | A UML sequence diagram of the request process is available |
|---|
| 21 | <a href="../requestProcess/requestProcess.pdf">here.</a> |
|---|
| 22 | </p> |
|---|
| 23 | </blockquote></td></tr></table> |
|---|
| 24 | |
|---|
| 25 | <table cellpadding="2" cellspacing="0" border="0"><tr><td bgcolor="#828DA6"><font face="arial,helvetica.sanserif" color="#ffffff"><a name="comments"><strong>comments</strong></a></font></td></tr><tr><td><blockquote> |
|---|
| 26 | <p> |
|---|
| 27 | The Servlet Specification provides many opportunities for |
|---|
| 28 | listening in (using Listeners) or modiying (using Filters) |
|---|
| 29 | the request handling process even before the request arrives |
|---|
| 30 | at the servlet that will handle it. |
|---|
| 31 | </p> |
|---|
| 32 | |
|---|
| 33 | </blockquote></td></tr></table> |
|---|
| 34 | |
|---|
| 35 | </blockquote></td></tr></table></td></tr><!--FOOTER SEPARATOR--><tr><td colspan="2"><hr size="1" noshade></td></tr><!--PAGE FOOTER--><tr><td colspan="2"><div align="center"><font size="-1" color="#525D76"><em> |
|---|
| 36 | Copyright © 1999-2008, Apache Software Foundation |
|---|
| 37 | </em></font></div></td></tr></table></body></html> |
|---|
