Seam via Apache and ProxyPass/ProxyPassReverse not working

[datagazetteer]

I'm trying to route my Seam application through an Apache virtual host and am running into problems with URL rewriting. I'm following these instructions for accomplishing the same task for Confluence:

http://confluence.atlassian.com/display/DOC/Using+Apache+with+mod_proxy#UsingApachewithmod_proxy-Complexconfiguration

I used the LiveHttpHeaders extension of Firefox to grab the interaction between the client and server.

http://integration.drc-dev.ohiolink.edu/

GET / HTTP/1.1
Host: integration.drc-dev.ohiolink.edu
User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8.1.1) Gecko/20061204 Firefox/2.0.0.1
Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 600
Proxy-Connection: keep-alive
Pragma: no-cache
Cache-Control: no-cache

HTTP/1.x 302 Moved Temporarily
Date: Wed, 31 Jan 2007 18:14:17 GMT
Server: Apache-Coyote/1.1
Location: http://integration.drc-dev.ohiolink.edu/drc/
Content-Length: 0
Content-Type: text/plain
Connection: close

----------------------------------------------------------

http://integration.drc-dev.ohiolink.edu/drc/

GET /drc/ HTTP/1.1
Host: integration.drc-dev.ohiolink.edu
User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8.1.1) Gecko/20061204 Firefox/2.0.0.1
Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 600
Proxy-Connection: keep-alive
Pragma: no-cache
Cache-Control: no-cache

HTTP/1.x 404 /drcdrc/
Date: Wed, 31 Jan 2007 18:14:17 GMT
Server: Apache-Coyote/1.1
X-Powered-By: Servlet 2.4; JBoss-4.0.5.GA (build: CVSTag=Branch_4_0 date=200610162339)/Tomcat-5.5
Content-Type: text/html;charset=utf-8
Content-Length: 976
Connection: close

The essence of the HTML error message is:

HTTP Status 404 - /drcdrc/

type Status report
message /drcdrc/
description The requested resource (/drcdrc/) is not available.

The VirtualHost definition in the Apache server is:

<VirtualHost *:80>
 ServerName integration.drc-dev.ohiolink.edu

 ProxyRequests off
 ProxyPreserveHost On

 <Proxy *>
 Order deny,allow
 Allow from all
 </Proxy>
 ProxyPass / http://localhost:8080/drc
 ProxyPassReverse / http://localhost:8080/drc
 ProxyHTMLURLMap /drc/ /

 <Location />
 Order allow,deny
 Allow from all
 </Location>
</VirtualHost>

This configuration looks like it would work, and in the case of Confluence it seems likely it would work. I have a non-Seam applet running in the same JBoss with a similar Apache configuration and it works fine. The issue seems isolated to Seam, but I can't pin it down.

Any advice?

[datagazetteer]

A follow-up -- I've tweaked the Apache configuration to the point where I can get the home page to load, but the next step in the application -- form submissions -- is not working. Here is the new Apache configuration (different from the first by adding some trailing slashes to some of the parameters):

<VirtualHost *>
ServerName integration.drc-dev.ohiolink.edu
 ProxyRequests off
 ProxyPreserveHost On
 <Proxy *>
 Order deny,allow
 Allow from all
 </Proxy>
 ProxyPass / http://localhost:8080/drc/
 ProxyPassReverse / http://localhost:8080/drc/

 SetOutputFilter proxy-html
 ProxyHTMLExtended on
 ProxyHTMLURLMap /drc/ /

 <Location />
 Order allow,deny
 Allow from all
 </Location>
</VirtualHost>

The HTML error is slightly different:

HTTP Status 404 - /drc/drc/itemList.seam

type Status report
message /drc/drc/itemList.seam
description The requested resource (/drc/drc/itemList.seam) is not available.

...as is the HTTP trace:

http://integration.drc-dev.ohiolink.edu/home.seam;jsessionid=DB7F029598D3F83AC725FB1BE50A2C69

POST /home.seam;jsessionid=DB7F029598D3F83AC725FB1BE50A2C69 HTTP/1.1
Host: integration.drc-dev.ohiolink.edu
User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8.1.1) Gecko/20061204 Firefox/2.0.0.1
Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 600
Proxy-Connection: keep-alive
Referer: http://integration.drc-dev.ohiolink.edu/home.seam
Cookie: JSESSIONID=DB7F029598D3F83AC725FB1BE50A2C69
Content-Type: application/x-www-form-urlencoded
Content-Length: 10208
[...form content...]

HTTP/1.x 302 Moved Temporarily
Date: Wed, 31 Jan 2007 19:23:29 GMT
Server: Apache-Coyote/1.1
X-Powered-By: Servlet 2.4; JBoss-4.0.5.GA (build: CVSTag=Branch_4_0 date=200610162339)/Tomcat-5.5
Location: http://integration.drc-dev.ohiolink.edu/drc/itemList.seam?cid=64
Content-Length: 0
Content-Type: text/plain
Connection: close

----------------------------------------------------------

http://integration.drc-dev.ohiolink.edu/drc/itemList.seam?cid=64

GET /drc/itemList.seam?cid=64 HTTP/1.1
Host: integration.drc-dev.ohiolink.edu
User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8.1.1) Gecko/20061204 Firefox/2.0.0.1
Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 600
Proxy-Connection: keep-alive
Referer: http://integration.drc-dev.ohiolink.edu/home.seam
Cookie: JSESSIONID=DB7F029598D3F83AC725FB1BE50A2C69

HTTP/1.x 404 /drc/drc/itemList.seam
Date: Wed, 31 Jan 2007 19:23:30 GMT
Server: Apache-Coyote/1.1
X-Powered-By: Servlet 2.4; JBoss-4.0.5.GA (build: CVSTag=Branch_4_0 date=200610162339)/Tomcat-5.5
Content-Type: text/html;charset=utf-8
Connection: close

It would seem that ProxyPassReverse isn't getting invoked for the Location header in reponse to the POST, except that I see it working with non-Seam applications.

[datagazetteer]

I found a way to work around this by adding additional ProxyPass and ProxyPassReverse lines. The source of the mysterious applet context path still remains, though, as the "/drc" path still shows up in the browser for Seam Facelet form only. This is quite strange and unexpected.

<VirtualHost *:80>
 ServerName integration.drc-dev.ohiolink.edu

 ProxyRequests off
 ProxyPreserveHost On

 <Proxy *>
 Order deny,allow
 Allow from all
 </Proxy>
 ProxyPass /drc/ http://localhost:8080/drc
 ProxyPass / http://localhost:8080/drc
 ProxyPassReverse / http://localhost:8080/drc
 ProxyHTMLURLMap /drc/drc/ /
 ProxyHTMLURLMap /drc/ /

 <Location />
 Order allow,deny
 Allow from all
 </Location>
</VirtualHost>

Does this look like a bug or something that I'm doing wrong?

[shane.bryzak]

Can't you just use mod_jk?