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From: Jeffrey Janner <Jeffrey.Janner@PolyDyne.com>
To: 'Tomcat Users List' <users@tomcat.apache.org>
Subject: RE: httpd/Tomcat load balancing question
Thread-Topic: httpd/Tomcat load balancing question
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Definitely the culprit.  Now, I just have to convince the Dev team that the=
y are, once again, a bunch of idiots.=0D=0A=0D=0AI'm sure it's some framewo=
rk/tool they are using.  The question now is, if I can't get them to not us=
e it in this case, is there some way to modify httpd to strip the ;jsession=
id stuff, or pass it on to the Tomcat server if it's there=3F  That is, ign=
ore the local feed if there is a sticky session id embedded in the URL=3F=0D=
=0A=0D=0AJeff=0D=0A=0D=0A> -----Original Message-----=0D=0A> From: Jeffrey =
Janner [mailto:Jeffrey.Janner@PolyDyne.com]=0D=0A> Sent: Wednesday, Decembe=
r 22, 2010 4:50 PM=0D=0A> To: 'Tomcat Users List'=0D=0A> Subject: RE: httpd=
/Tomcat load balancing question=0D=0A>=20=0D=0A> In the specific case I men=
tion below, this is the source from the jsp:=0D=0A>         <link rel=3D"ic=
on" type=3D"image/x-icon" href=3D"<c:url=0D=0A> value=3D"/static/images/ico=
ns/favicon.ico"/>" />=0D=0A>=20=0D=0A> I'm not a jsp programmer, but I'm be=
tting it has something to do with=0D=0A> the <c:url /> encapsulation.=0D=0A=
> Jeff=0D=0A>=20=0D=0A> > -----Original Message-----=0D=0A> > From: Jeffrey=
 Janner [mailto:Jeffrey.Janner@PolyDyne.com]=0D=0A> > Sent: Wednesday, Dece=
mber 22, 2010 4:40 PM=0D=0A> > To: 'Tomcat Users List'; 'Tomcat Users List'=0D=
=0A> > Subject: RE: httpd/Tomcat load balancing question=0D=0A> >=0D=0A> > =
Thanks, that was what I was thinking.=0D=0A> > Since the only JSP I have ac=
cess to is the welcome-file, I'm not sure=0D=0A> I=0D=0A> > can verify.=0D=0A=
> >=0D=0A> > Q: I would think the getContextPath would be desirable, in cas=
e we=0D=0A> > change the war-file name, etc., but I wouldn't think that wou=
ld cause=0D=0A> > the jsessionID string to get appended to the end of the p=
ath.  That=0D=0A> is,=0D=0A> > they are coming out as=0D=0A> >=0D=0A> "/Por=
tal/static/images/icons/favicon.ico;jsessionid=3DB4E3E4AA3D79B8877A0=0D=0A>=
 > 9CFCC32827D09.tomcat1".=0D=0A> >=0D=0A> > Jeff=0D=0A> >=0D=0A> > > -----=
Original Message-----=0D=0A> > > From: Andr=E9 Warnier [mailto:aw@ice-sa.co=
m]=0D=0A> > > Sent: Wednesday, December 22, 2010 2:43 PM=0D=0A> > > To: Tom=
cat Users List=0D=0A> > > Subject: Re: httpd/Tomcat load balancing question=0D=
=0A> > >=0D=0A> > > Hi.=0D=0A> > >=0D=0A> > > Not knowing anything about JS=
P per se, I would nevertheless guess=0D=0A> > that=0D=0A> > > the links are=0D=
=0A> > > written using something like=0D=0A> > > <img src=3D"<%getContextPa=
th%>/static/mylogo.jpg"/> or similarly,=0D=0A> > instead=0D=0A> > > of just=
 plain html=0D=0A> > > <img src=3D"/Portal/static/mylogo.jpg"/>.=0D=0A> > >=
 That probably leads the JSP compiler to think it has to=0D=0A> "relativise=
"=0D=0A> > > the links to the app=0D=0A> > > context and so on, while in th=
is case it should not, because they=0D=0A> > will=0D=0A> > > be served by t=
he=0D=0A> > > front-end, not by Tomcat.=0D=0A> > >=0D=0A> > >=0D=0A> > >=0D=
=0A> > > Jeffrey Janner wrote:=0D=0A> > > > Httpd 2.2.17=0D=0A> > > > Tomca=
t 6.0.29=0D=0A> > > > Sun JDK 1.6.0=5F22=0D=0A> > > > Spring Framework (3.0=
=2E2 I think)=0D=0A> > > > All on Windows=0D=0A> > > >=0D=0A> > > > The Dev=
 team is creating a new app that we are planning to deploy=0D=0A> > > using=
 httpd as a load-balancer to two Tomcats on separate servers.=0D=0A> > > Ht=
tpd is configured to serve static files - graphics, css, etc. -=0D=0A> > wi=
th=0D=0A> > > everything else being sent to the Tomcat servers over AJP.  T=
he=0D=0A> > Tomcat=0D=0A> > > app has one jsp file setup as the welcome-fil=
e, which just does a=0D=0A> > > redirect to host/app/login, which is an int=
ernal action that=0D=0A> > generates=0D=0A> > > the real login screen.  All=
 other parts of the app are buried in=0D=0A> the=0D=0A> > > WEB-INF/classes=
 structure (as far as I can tell).=0D=0A> > > >=0D=0A> > > > We are current=
ly testing the setup, and if you go to=0D=0A> > > http://prtltest.polydyne.=
com, everything seems to work just fine.=0D=0A> > The=0D=0A> > > browser ge=
ts redirected to=0D=0A> http://prtltest.polydyne.com/Portal/login=0D=0A> > =
> and the screen looks fine.  The problem is if you go directly to=0D=0A> t=
he=0D=0A> > > login page, bypassing the welcome-file redirect, then you don=
't get=0D=0A> > the=0D=0A> > > static files.  If you refresh the page, ever=
ything shows up again.=0D=0A> > > >=0D=0A> > > > Looking at the source of t=
he login page, it appears that all the=0D=0A> > > static links have the jse=
ssionid appended to them on the first=0D=0A> load,=0D=0A> > > but not on su=
bsequent loads.  I assume this is because Tomcat=0D=0A> hasn't=0D=0A> > > d=
etermined cookie support yet when it generates the page the first=0D=0A> > =
> time, but does know about it on the refresh.  My question is, is=0D=0A> >=
 there=0D=0A> > > something the Dev team should be doing before generating =
the login=0D=0A> > > page, or generating the static links, or is there a co=
nfiguration=0D=0A> > > setting I'm missing in the httpd.conf file=3F  Or pe=
rhaps in the=0D=0A> > web.xml=3F=0D=0A> > > >=0D=0A> > > > Jeff=0D=0A> > > =
>=0D=0A> > > > The httpd.conf file is pretty stock, with the following adde=
d for=0D=0A> > the=0D=0A> > > load-balancer configuration:=0D=0A> > > >=0D=0A=
> > > > <Location /balancer-manager>=0D=0A> > > >   SetHandler balancer-man=
ager=0D=0A> > > >=0D=0A> > > >   Order Deny,Allow=0D=0A> > > >   Deny from =
all=0D=0A> > > >   Allow from 10.1.1 127.0.0.1=0D=0A> > > > </Location>=0D=0A=
> > > >=0D=0A> > > > <Proxy balancer://mycluster>=0D=0A> > > >             =
    BalancerMember ajp://prtltest01:8009/Portal=0D=0A> > > route=3Dtomcat1 =
loadfactor=3D50=0D=0A> > > >                 BalancerMember ajp://prtltest0=
2:8009/Portal=0D=0A> > > route=3Dtomcat2 loadfactor=3D50=0D=0A> > > > </Pro=
xy>=0D=0A> > > >=0D=0A> > > > ProxyPass /Portal/static !=0D=0A> > > > Proxy=
Pass /Portal balancer://mycluster=0D=0A> > > stickysession=3DJSESSIONID|jse=
ssionid scolonpathdelim=3DOn=0D=0A> > > > ProxyPass / balancer://mycluster/=0D=
=0A> > stickysession=3DJSESSIONID|jsessionid=0D=0A> > > scolonpathdelim=3DO=
n=0D=0A> > > >=0D=0A> > > > The web.xml file is:=0D=0A> > > >=0D=0A> > > > =
<=3Fxml version=3D"1.0" encoding=3D"UTF-8"=3F>=0D=0A> > > > <web-app versio=
n=3D"2.5" xmlns=3D"http://java.sun.com/xml/ns/javaee"=0D=0A> > > xmlns:xsi=3D=
"http://www.w3.org/2001/XMLSchema-instance"=0D=0A> > > xsi:schemaLocation=3D=
"http://java.sun.com/xml/ns/javaee=0D=0A> > > http://java.sun.com/xml/ns/ja=
vaee/web-app=5F2=5F5.xsd">=0D=0A> > > >     <display-name>Polydyne Portal A=
pplication</display-name>=0D=0A> > > >     <!-- Log4J Config -->=0D=0A> > >=
 >     <context-param>=0D=0A> > > >         <param-name>log4jConfigLocation=
</param-name>=0D=0A> > > >         <param-value>/WEB-INF/log4j.properties</=
param-value>=0D=0A> > > >     </context-param>=0D=0A> > > >     <listener>=0D=
=0A> > > >         <listener-=0D=0A> > > class>org.springframework.web.util=
=2ELog4jConfigListener</listener-=0D=0A> > class>=0D=0A> > > >     </listen=
er>=0D=0A> > > >     <context-param>=0D=0A> > > >         <param-name>conte=
xtConfigLocation</param-name>=0D=0A> > > >         <param-value>=0D=0A> > >=
 >             /WEB-INF/Portal-service.xml=0D=0A> > > >             /WEB-IN=
F/Portal-security.xml=0D=0A> > > >         </param-value>=0D=0A> > > >     =
</context-param>=0D=0A> > > >     <listener>=0D=0A> > > >         <listener=
-=0D=0A> > >=0D=0A> >=0D=0A> class>org.springframework.web.context.ContextL=
oaderListener</listener-=0D=0A> > > class>=0D=0A> > > >     </listener>=0D=0A=
> > > >=0D=0A> > > >     <!-- Concurrent Session Control -->=0D=0A> > > >  =
   <listener>=0D=0A> > > >         <listener-=0D=0A> > >=0D=0A> >=0D=0A> cl=
ass>org.springframework.security.web.session.HttpSessionEventPublishe=0D=0A=
> > > r</listener-class>=0D=0A> > > >     </listener>=0D=0A> > > >=0D=0A> >=
 > >     <!-- Reads request input using UTF-8 encoding -->=0D=0A> > > >    =
 <filter>=0D=0A> > > >         <filter-name>characterEncodingFilter</filter=
-name>=0D=0A> > > >         <filter-=0D=0A> > >=0D=0A> class>org.springfram=
ework.web.filter.CharacterEncodingFilter</filter-=0D=0A> > > class>=0D=0A> =
> > >         <init-param>=0D=0A> > > >             <param-name>encoding</p=
aram-name>=0D=0A> > > >             <param-value>UTF-8</param-value>=0D=0A>=
 > > >         </init-param>=0D=0A> > > >         <init-param>=0D=0A> > > >=
             <param-name>forceEncoding</param-name>=0D=0A> > > >           =
  <param-value>true</param-value>=0D=0A> > > >         </init-param>=0D=0A>=
 > > >     </filter>=0D=0A> > > >     <filter-mapping>=0D=0A> > > >        =
 <filter-name>characterEncodingFilter</filter-name>=0D=0A> > > >         <u=
rl-pattern>/*</url-pattern>=0D=0A> > > >     </filter-mapping>=0D=0A> > > >=0D=
=0A> > > >     <!-- Spring Security settings start -->=0D=0A> > > >     <fi=
lter>=0D=0A> > > >         <filter-name>springSecurityFilterChain</filter-n=
ame>=0D=0A> > > >         <filter-=0D=0A> > > class>org.springframework.web=
=2Efilter.DelegatingFilterProxy</filter-=0D=0A> > > class>=0D=0A> > > >    =
 </filter>=0D=0A> > > >     <filter-mapping>=0D=0A> > > >         <filter-n=
ame>springSecurityFilterChain</filter-name>=0D=0A> > > >         <url-patte=
rn>/*</url-pattern>=0D=0A> > > >     </filter-mapping>=0D=0A> > > >     <!-=
- Spring Security settings end -->=0D=0A> > > >     <!-- Servlet Definition=
 -->=0D=0A> > > >     <!--=0D=0A> > > >      - Map static resources to the =
default servlet=0D=0A> > > >      - examples:=0D=0A> > > >      -     http:=
//localhost:8080/static/images/pets.png=0D=0A> > > >      -     http://loca=
lhost:8080/static/styles/petclinic.css=0D=0A> > > >     -->=0D=0A> > > >   =
  <servlet-mapping>=0D=0A> > > >         <servlet-name>default</servlet-nam=
e>=0D=0A> > > >         <url-pattern>/static/*</url-pattern>=0D=0A> > > >  =
   </servlet-mapping>=0D=0A> > > >=0D=0A> > > >     <servlet>=0D=0A> > > > =
        <servlet-name>Portal</servlet-name>=0D=0A> > > >         <servlet-=0D=
=0A> > > class>org.springframework.web.servlet.DispatcherServlet</servlet-=0D=
=0A> > class>=0D=0A> > > >         <load-on-startup>2</load-on-startup>=0D=0A=
> > > >     </servlet>=0D=0A> > > >     <servlet-mapping>=0D=0A> > > >     =
    <servlet-name>Portal</servlet-name>=0D=0A> > > >         <url-pattern>/=
</url-pattern>=0D=0A> > > >     </servlet-mapping>=0D=0A> > > >     <!-- Se=
rvlet Definition End -->=0D=0A> > > >     <session-config>=0D=0A> > > >    =
     <session-timeout>=0D=0A> > > >             30=0D=0A> > > >         </s=
ession-timeout>=0D=0A> > > >     </session-config>=0D=0A> > > >     <welcom=
e-file-list>=0D=0A> > > >         <welcome-file>redirect.jsp</welcome-file>=0D=
=0A> > > >     </welcome-file-list>=0D=0A> > > >     <error-page>=0D=0A> > =
> >         <exception-=0D=0A> > > type>javax.servlet.UnavailableException<=
/exception-type>=0D=0A> > > >         <location>/WEB-=0D=0A> INF/views/erro=
rs/Unavailable.html</location>=0D=0A> > > >     </error-page>=0D=0A> > > > =
    <error-page>=0D=0A> > > >         <exception-type>503</exception-type>=0D=
=0A> > > >         <location>/WEB-=0D=0A> INF/views/errors/Unavailable.html=
</location>=0D=0A> > > >     </error-page>=0D=0A> > > > </web-app>=0D=0A> >=
 > >=0D=0A> > >=0D=0A> >=0D=0A> =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
=5F=5F=5F=5F=5F=5F=0D=0A> > > =5F=5F=5F=0D=0A> > > >=0D=0A> > > > Confident=
iality Notice:  This Transmission (including any=0D=0A> > > attachments) ma=
y contain information that is privileged,=0D=0A> > confidential,=0D=0A> > >=
 and exempt from disclosure under applicable law.  If the reader of=0D=0A> =
> this=0D=0A> > > message is not the intended recipient you are hereby noti=
fied that=0D=0A> > any=0D=0A> > > dissemination, distribution, or copying o=
f this communication is=0D=0A> > > strictly prohibited.=0D=0A> > > >=0D=0A>=
 > > > If you have received this transmission in error, please=0D=0A> immed=
iately=0D=0A> > > reply to the sender or telephone (512) 343-9100 and delet=
e this=0D=0A> > > transmission from your system.=0D=0A> > > >=0D=0A> > >=0D=
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eceived this transmission in error, please immediately=0D=0A> > reply to th=
e sender or telephone (512) 343-9100 and delete this=0D=0A> > transmission =
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in error, please immediately=0D=0A> reply to the sender or telephone (512) =
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