Custom JnlpDownloadServlet: JAR downloads occur twice?
I've implemented a custom version of the JnlpDownloadServlet, because I primarily want my own handling of the URL query string. I have it setup to handle both JNLP and JAR downloads and all seems to work - the JNLP apps and JARs download then start and that is good. For simplicity I initially left out jar-diffing, versioning as well as pack200 handling, but decided to try including pack200 handling just now. Again, I seem to have it running fine, but, in the process of setting this up, I found (by displaying the DownloadRequest within the servlet's handleRequest method) that the JNLP client (Web Start) appears to be:
1) on an initial JNLP application launch, requesting each JAR twice
2) on subsequent JNLP launching (with no cache clear), requesting each JAR once more
In each case, the pack200 JAR is found and sent. As far as I can tell, Web Start is functioning ok, but I am mystified by this apparent multiple and repetitive downloading of JARs. Is this expected behaviour? Is it something that I need to take care of, like maybe with some sort of versioning or whatever? Is there some sort of debug tracing I can set in the Web Start client to see what's going on?
Looks like I get to answer my own. J
I noticed JnlpDownloadServlet does not implement doHead(). It would make sense if it were, so I tried implementing it within my own servlet, and once deployed, noticed that Java Web Start client uses HEAD requests frequently, so this all makes sense now from point of view of Web Start.
But it looks like there is an omission within JnlpDownloadServlet - it needs a doHead() implementation. Consequently, anyone using JnlpDownloadServlet out of the box from Java 5 and 6, will be causing Web Start clients that use their deployment to always get JARs whether they are in local jar cache or not. I suppose that Web Start client tries HEAD request first, and gets nothing, and so tries GET request.
Similar Messages
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Jnlpdownloadservlet exception downloading jars of a certain size
Using
Windows XP
Weblogic 10.3.2
Java 1.6.0_17
An exception occurs when downloading jars for the first time with the jnlpdownloadservlet. It occurs for the two largest jars only.
from the JnlpDownloadServlet log -
JnlpDownloadServlet(3): Request: /netintel-client/application/jviewsall.5.0.jar
JnlpDownloadServlet(3): User-Agent: JNLP/6.0 javaws/1.6.0_17 (b04) Java/1.6.0_17
JnlpDownloadServlet(3): Resource returned: /application/jviewsall.5.0.jar
JnlpDownloadServlet(1): Internal error:
java.net.SocketException: Software caused connection abort: socket write error
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
at weblogic.servlet.internal.ChunkOutput.writeChunkNoTransfer(ChunkOutput.java:530)
at weblogic.servlet.internal.ChunkOutput.writeChunks(ChunkOutput.java:487)
at weblogic.servlet.internal.ChunkOutput.flush(ChunkOutput.java:382)
at weblogic.servlet.internal.ChunkOutput$2.checkForFlush(ChunkOutput.java:580)
at weblogic.servlet.internal.ChunkOutput.write(ChunkOutput.java:306)
at weblogic.servlet.internal.ChunkOutputWrapper.write(ChunkOutputWrapper.java:150)
at weblogic.servlet.internal.ServletOutputStreamImpl.write(ServletOutputStreamImpl.java:138)
at jnlp.sample.servlet.DownloadResponse$FileDownloadResponse.sendRespond(DownloadResponse.java:231)
at jnlp.sample.servlet.JnlpDownloadServlet.handleRequest(JnlpDownloadServlet.java:178)
at jnlp.sample.servlet.JnlpDownloadServlet.doGet(JnlpDownloadServlet.java:113)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3594)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2202)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2108)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1432)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
The weblogic log -
<17-Feb-2010 11:56:43 o'clock GMT> <Error> <HTTP> <BEA-101020> <[ServletContext@27407197[app:network-intell
ient spec-version:null]] Servlet failed with Exception
java.lang.IllegalStateException: Response already committed
at weblogic.servlet.internal.ServletResponseImpl.objectIfCommitted(ServletResponseImpl.java:1591)
at weblogic.servlet.internal.ServletResponseImpl.sendError(ServletResponseImpl.java:614)
at weblogic.servlet.internal.ServletResponseImpl.sendError(ServletResponseImpl.java:592)
at jnlp.sample.servlet.JnlpDownloadServlet.handleRequest(JnlpDownloadServlet.java:191)
at jnlp.sample.servlet.JnlpDownloadServlet.doGet(JnlpDownloadServlet.java:113)
Truncated. see log file for complete stacktrace
JNLP as follows
<?xml version="1.0" encoding="utf-8"?>
<jnlp spec="6.0"
codebase="http://localhost:7001/netintel-client/application"
href="launch.jnlp">
<information>
<title>Oracle Communications Network Intelligence</title>
<vendor>Oracle Corporation.</vendor>
<description>Oracle Communications Network Intelligence</description>
</information>
<security>
<all-permissions/>
</security>
<resources>
<j2se version="1.6" href="http://java.sun.com/products/autodl/j2se" java-vm-args="-Xmx1024m -Xverify:none -Xfuture"/>
<property name="log4j.configuration" value="log4j-modules.properties"/>
<property name="APP_SERVER_URL" value="http://localhost:7001"/>
<property name="user.language" value="en"/>
<property name="user.country" value="ie"/>
<jar href="NetIntelligence_Help_en.jar"/>
<jar href="acegi-security-1.1-SNAPSHOT.jar"/>
<jar href="acegi-security-tiger-1.0.3.jar"/>
<jar href="aspectjweaver-1.5.2.jar"/>
<jar href="spring-aspects.jar"/>
<jar href="spring-modules-validation-0.5.jar"/>
<jar href="spring.jar"/>
<jar href="hibernate3.jar"/>
<jar href="antlr-2.7.6.jar"/>
<jar href="asm-attrs.jar"/>
<jar href="asm.jar"/>
<jar href="cglib-2.1.3.jar"/>
<jar href="ehcache-1.2.3.jar"/>
<jar href="jta.jar"/>
<jar href="dom4j-1.6.1.jar"/>
<jar href="jcalendar-flib-apache.jar"/>
<jar href="jhall.jar"/>
<jar href="joda-time-1.4.jar"/>
<jar href="commons-attributes-api.jar"/>
<jar href="commons-attributes-compiler.jar"/>
<jar href="commons-beanutils.jar"/>
<jar href="commons-codec-1.3.jar"/>
<jar href="commons-collections.jar"/>
<jar href="commons-dbcp.jar"/>
<jar href="commons-digester.jar"/>
<jar href="commons-fileupload.jar"/>
<jar href="commons-httpclient-3.0.1.jar"/>
<jar href="commons-io-1.3.1.jar"/>
<jar href="commons-lang.jar"/>
<jar href="commons-logging-1.1.jar"/>
<jar href="commons-pool.jar"/>
<jar href="commons-validator.jar"/>
<jar href="log4j-1.2.11.jar"/>
<jar href="binding-1.1.1.jar"/>
<jar href="forms-1.0.6.jar"/>
<jar href="looks-2.1.1.jar"/>
<jar href="xstream-1.2.jar"/>
<jar href="netsure_ui.jar"/>
<jar href="netsure_business.jar"/>
<jar href="netsure_domain.jar"/>
<jar href="netsure_common.jar"/>
<jar href="jviewsall.5.0.jar "/>
<jar href="netsure_modules.jar" main="true"/>
</resources>
<application-desc main-class="com.netsure.capman.app.AppMain"/>
</jnlp>
jviewsall.5.0.jar is 3830371 bytes
netsure_modules.jar is 3802341 bytes
None of the other jars raise this exception
The next largest jar is 2846594 bytes
The 2 jars still download ok and there are no apparent problems.
Has anyone encountered anything similiar ?
I am aware of an old thread forum http://forums.sun.com/thread.jspa?forumID=38&threadID=183571 concerning the download of updated files . This was last updated in 2007Thanks Andrew,
I updated the invalid syntax identified by both these tools - namely adding an association mime-type jnlp and moving the properies to the bottom of the resources. Unfortunately the same exception occurs.
This was not an issue using Java 1.5 with weblogic 9.2
<?xml version="1.0" encoding="utf-8"?>
<jnlp spec="6.0"
codebase="http://localhost:7001/netintel-client/application"
href="launch.jnlp">
<information>
<title>Oracle Communications Network Intelligence</title>
<vendor>Oracle Corporation.</vendor>
<description>Oracle Communications Network Intelligence</description>
<association mime-type="application/x-java-jnlp-file" extensions="jnlp"/>
</information>
<security>
<all-permissions/>
</security>
<resources>
<j2se version="1.6" href="http://java.sun.com/products/autodl/j2se" java-vm-args="-Xmx1024m -Xverify:none -Xfuture"/>
<jar href="NetIntelligence_Help_en.jar"/>
<jar href="acegi-security-1.1-SNAPSHOT.jar"/>
<jar href="acegi-security-tiger-1.0.3.jar"/>
<jar href="aspectjweaver-1.5.2.jar"/>
<jar href="spring-aspects.jar"/>
<jar href="spring-modules-validation-0.5.jar"/>
<jar href="spring.jar"/>
<jar href="hibernate3.jar"/>
<jar href="antlr-2.7.6.jar"/>
<jar href="asm-attrs.jar"/>
<jar href="asm.jar"/>
<jar href="cglib-2.1.3.jar"/>
<jar href="ehcache-1.2.3.jar"/>
<jar href="jta.jar"/>
<jar href="dom4j-1.6.1.jar"/>
<jar href="jcalendar-flib-apache.jar"/>
<jar href="jhall.jar"/>
<jar href="joda-time-1.4.jar"/>
<jar href="commons-attributes-api.jar"/>
<jar href="commons-attributes-compiler.jar"/>
<jar href="commons-beanutils.jar"/>
<jar href="commons-codec-1.3.jar"/>
<jar href="commons-collections.jar"/>
<jar href="commons-dbcp.jar"/>
<jar href="commons-digester.jar"/>
<jar href="commons-fileupload.jar"/>
<jar href="commons-httpclient-3.0.1.jar"/>
<jar href="commons-io-1.3.1.jar"/>
<jar href="commons-lang.jar"/>
<jar href="commons-logging-1.1.jar"/>
<jar href="commons-pool.jar"/>
<jar href="commons-validator.jar"/>
<jar href="jviewsall.5.0.jar"/>
<jar href="log4j-1.2.11.jar"/>
<jar href="binding-1.1.1.jar"/>
<jar href="forms-1.0.6.jar"/>
<jar href="looks-2.1.1.jar"/>
<jar href="xstream-1.2.jar"/>
<jar href="netsure_ui.jar"/>
<jar href="netsure_business.jar"/>
<jar href="netsure_domain.jar"/>
<jar href="netsure_common.jar"/>
<jar href="netsure_modules.jar" main="true"/>
<property name="log4j.configuration" value="log4j-modules.properties"/>
<property name="APP_SERVER_URL" value="http://localhost:7001"/>
<property name="user.language" value="en"/>
<property name="user.country" value="ie"/>
</resources>
<application-desc main-class="com.netsure.capman.app.AppMain"/>
</jnlp> -
I have downloaded Lion twice and just at the end it said there was an error. What is wrong?
I have a MacBook Pro that was purchased in January 2011. I am really annoyed because the downloading takes 24h.
Cheers,I too am having problems with the download speed and errors after it's downloaded. We have a T-1 line - which is fairly fast - not as fast as some - but come on--- I've download files bigger then this in a few hours - This file took 12 hours plus to download - what seems to be the problem? I have downloaded it twice and both time it comes up with corruption errors. I've considered buying the thumb drive version - just because I can't do this any more.
I want to know how do you get a credit back for this junk! I'm been reading different reviews of Lion - and they're ---- NOT FAVORABLE!
Maybe I"ll JUST count my losses and FORGET THIS UPGRADE! I LOVE MACS - but I'm not loving this!
Very Dissatisfied Customer... All I keep hearing is "Run Forest! Run!" -
when I plug my iPhone in to my computer, iTunes doesn't recognize it as a device. I have deleted and re-downloaded iTunes twice which seems to fix the problem temporarily but then the next time I plug my phone in, the device is not recognized.
What happens if you go to iTunes > File > Devices, do you get the option to Sync iPhone?
You could try a reinstall of iTunes. OS X Yosemite: Reinstall apps that came with your Mac -
I originally had Firefox 3.5 and was invited to download beta 4 which I have. Then an update to a higher level of beta 4 came in and I downloaded that. Now you folks are introducing 5.0 and I have downloaded it twice, but it doesn't seem to be either downloading or have any results when I attempt to check what version is currently running in the properties of this site on my laptop.... I'm using windows 7 home premium version...
You are showing Fx5. The Desktop icon doesn't change in my experience. There has never been a 4.12 version.
To check version Help>About Firefox, or
Help>Troubleshooting Information, or
Options>Advanced>Update>Check update history(little box at the bottom). -
Consistently getting an error in custom reports "an error occurred" is the only msg displayed...my c
Consistently getting an error in custom reports "an error occurred" is the only msg displayed...my clients are screaming...what is the problem?
Hi,
Please log a ticket with BC support for this issue. Please provide the exact steps, preferably a video. You can log the ticket from your admin panel > help & support.
Kind Regards,
Aish -
How to import custom java jar/class into oracle to be used in java proc ?
Hi
I would like to know how to import custom java jar/class files into oracle to be used in java stored procedure.
I am developing a oracle pl/sql procedure to call java program. The java program will be created as procedure and will be published.
But, my question is that I do have a other external jar/class file that need to be imported into this java program.
example
raise_sal.java
import java.util.*;
import oracle.sql.*;
<<reference other java programs >>
import cmpmsgsvc.xxxx.* ;
import cmpmsgsvc.yyyy.* ;
import cmpmsgsvc.zzzz.* ;
how do I import the cmpmsgsvc jar/class file into oracle so that I don't have any
compilation errros on raise_sal.java program ??
what are the steps to import/compile and validate to do this?
thanks for your help in advance.
Thanks
rrb.Kuassi
Problem is that, I have 6 jar files that are needed to be included in the main java program. And, there are more than 50+ classes, propertiers in those 6 jar files.
It might be not good idea to have all those 50+ classes in the production database.
Is there anyway that I keep all those 6 jar files in unix box (our's is oracle erp installation with oracle being installed on unix box) and just refer them in the main java program. I mean database will be loaded with main java program and it should able to refer other 6 jar files from unix.
if we create a directory and keep all jar files in there and include that directory in classpath variable, does this works? or what is other method?
Please let me know.
Thanks -
Jar download not working over dial up
Hey,
Our webstart application works just fine while connected to the lan at work. The various jars required by the application are downloaded without any problems.
However, when I try to access the same application over dial up (I have tried netzero and aol), the jar download fails in a rather weird fashion.
On clicking on the link for the application, the main jar e.g. main-application.jar downloads just fine, but the next jar in line fails with the following message
Unable to load resource: https://server.com:443/application/lib/axis.jar
Exception
JNLPException[category: Download Error : Exception: java.net.SocketException: Unexpected end of file from server : LaunchDesc: null ]
at com.sun.javaws.cache.DownloadProtocol.doDownload(Unknown Source)
at com.sun.javaws.cache.DownloadProtocol.getResource(Unknown Source)
at com.sun.javaws.LaunchDownload.downloadJarFiles(Unknown Source)
at com.sun.javaws.LaunchDownload.downloadEagerorAll(Unknown Source)
at com.sun.javaws.Launcher.downloadResources(Unknown Source)
at com.sun.javaws.Launcher.handleApplicationDesc(Unknown Source)
at com.sun.javaws.Launcher.handleLaunchFile(Unknown Source)
at com.sun.javaws.Launcher.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Wrapped Exception
java.net.SocketException: Unexpected end of file from server
at sun.net.www.http.HttpClient.parseHTTPHeader(Unknown Source)
at sun.net.www.http.HttpClient.parseHTTP(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
at java.net.HttpURLConnection.getResponseCode(Unknown Source)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
at com.sun.javaws.net.BasicNetworkLayer.doRequest(Unknown Source)
at com.sun.javaws.net.BasicNetworkLayer.doGetRequest(Unknown Source)
Now, when i click on the application launch again, it proceeds to download the next jar e.g axis.jar in this case without a problem, but it will fail on the next jar
snippet from my jnlp file
<jar href="application.jar"/>
<jar href="lib/axis.jar"/>
<jar href="lib/castor-0.9.5.2-xml.jar"/>
<jar href="lib/commons-beanutils-1.5.jar"/>
<jar href="lib/commons-collections-2.1.jar"/>
Note : All of this works fine when im not using dial up to connect.
Does anyone have any ideas ?
Any help is greatly appreciatedpboeykens,
It may definitely be something with my network and/or firewall configuration. I'm just not sure where to look yet.
I have tried modifying apache settings to no avail.
I've tried turning KeepAlives off, changing the keep alive timeout and the max number of keep alives allowed on apache, but none of these setting changes had any effect on the jar download.
If you have any suggestions for what I might look at as far as my firewall settings, then I can take that to my security department.
My next step is to try and enable the debug logging with webstart to maybe get a better idea of why it thinks that no jar is available.
Thanks -
I downloaded a ringdown direct from itunes to my iphone 4S. When I go to settings/sounds/ringtone, the new ringtone is not there! I have downloaded it twice, but still not there. Does anyone know how to resolve this?
Thanks, your advice prompted me to look at it again on itunes, and discovered that i have actually downloaded the full song instead of the ringtone. False alarm...and thank you!
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Updated itunes - windows quickly shuts it down and says something about "Data Execution Prevention". I followed the instrucxtions to a dead end. I have re downloaded it twice and used the repair files once but get the same result. It worked fine before I updated it to death.
Try updating your QuickTime to the most recent version. Does that clear up the DEP errors in iTunes?
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Whenever I try to download the newest itunes software, I am sent to the "Thank you for dowloading itunes" page, but no download occurs.
you can try this thread maybe? https://discussions.apple.com/message/16217061#16217061
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Two iphones, one macbook, do i have to download updates twice?
two iphones, one macbook, do i have to download updates twice?
If the iPhones are identical models, the iOS update will only be downloaded once.
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i purchased an iphone 4s yesterday first iphone and i downloaded ringtone twice and both times it puts it in library any help?
i purchased an iphone 4s yesterday first iphone and i downloaded ringtone twice and both times it puts it in library any help?
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Same report occuring twice in Discoverer Viewer.
Hi,
I am facing a problem in Discoverer Viewer wherein I have the same report which is occuring twice.
The last modified date for both of them is different but other than that the Name, Description and Owner for both are exactly same.
Can anyone please advice me what could be the reason for the same report occuring twice in Viewer.
Regards,
ShrutiHi Shruti
First of all let's assume you have a public EUL so let's discuss what happens when you have one of these.
If you open your Admin tool and go to Tools | Privileges, look for the PUBLIC user (not role) and look at the privileges. Out of the box that user is a full user of Plus and Desktop with all privileges except Schedule. Because of this ALL users will inherit the public privileges and will become able to save workbooks to the database.
When I am setting up a new environment for a company the first thing I do is reduce the rights on the PUBLIC user so that it becomes a viewer user only. I edit the privileges and grant only the following:
Collect Query Statistics, Item Drill and Drill Out
Next, I create one or more new VIEWER roles called something like SALES_VIEWER, GL_VIEWER and so on. By default these roles will inherit the PUBLIC privileges. I leave this untouched and grant these roles to all of my viewers and report writers, using Tools | Security to control access to the business areas. I do not grant any further privileges to the VIEWER roles.
Next, I create one of more REPORT WRITER roles called something like SALES_WRITER, GL_WRITER and so on. By default these will also inherit the PUBLIC privileges. I now use Tools | Privileges to increase the privileges for these roles so that they have everything except Schedule Workbooks (you cannot assign this to a ROLE because these are stored in the user's schema and a role does not have a schema). Finally, I grant these roles to the users who will become my report writers.
Because I use the VIEWER roles to control access to the business areas and the WRITER roles to control who can edit reports I get total control.
The last step is to remove the ability to Save and Save As from the Viewer tool. You do this in application server control.
Hope this overview of managing a Discoverer environment helps
Best wishes
Michael -
Revision: 1649
Author: [email protected]
Date: 2008-05-09 14:49:18 -0700 (Fri, 09 May 2008)
Log Message:
Renamed our customized Velocity JAR from mm-velocity-1.4.jar to velocity-dep-1.4-flex.jar.
The standard Velocity name for this JAR, which is built by Velocity's "jar-dep" target, is velocity-dep-1.4.jar. We append "-flex" to indicate that we've customized it, just as for our customized Batik JAR.
This change affected the mxmlc classpath in modules/compiler/build.xml, the packaging scripts, and the Eclipse projects.
I also renamed mm-velocity-LICENSE.txt and mm-velocity-NOTICE.txt to drop the "mm-" prefix.
Bugs: -
QA: No
Doc: No
Reviewer: Jono
Ticket Links:
http://bugs.adobe.com/jira/browse/velocity-1
http://bugs.adobe.com/jira/browse/dep-1
http://bugs.adobe.com/jira/browse/dep-1
Modified Paths:
flex/sdk/trunk/build.xml
flex/sdk/trunk/development/eclipse/java/flex-jars/.classpath
flex/sdk/trunk/modules/compiler/build.xml
Added Paths:
flex/sdk/trunk/lib/velocity-LICENSE.txt
flex/sdk/trunk/lib/velocity-NOTICE.txt
flex/sdk/trunk/lib/velocity-dep-1.4-flex.jar
Removed Paths:
flex/sdk/trunk/lib/mm-velocity-1.4.jar
flex/sdk/trunk/lib/mm-velocity-LICENSE.txt
flex/sdk/trunk/lib/mm-velocity-NOTICE.txt1) Did you assigned weblogic user to presentation server admin after the upgrade?
Obiee11g: Administration link is missing for weblogic User(Presentation Services)
2) Goto Administration tab and do 'Scan and Update Catalog Objects That Require Updates'
Thanks,
Saichand
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