Java Update 4 -- "Safe" java-vm-args Arguments for Java Web Start?

Sun's Java documentation notes that JNLP files can request arbitrary arguments to the virtual machine using the java-vm-args argument. However, only arguments considered "safe" will be recognized. The JNLP spec doesn't list the safe arguments, since the list might change on a per-release basis.
Unfortunately I can't find a current list of safe arguments either on Apple's site or Sun's site. I am fairly sure that -Xss is no longer on the safe list, since it's not working any more, but it would be nice to have that confirmed.
Anyone have any ideas/pointers?

I'm pretty sure that list is not accurate for the Java Web Start released in Update 4 recently. I have an app which attempts to specify heap and stack sizes using java-vm-args="-Xmx1024m -Xms1024m -Xss8m"; when I use the Java console to display memory usage, it shows that the heap is 81MB (which is the default). If I use initial-heap-size="1024m" max-heap-size="1024m" in the same JNLP file, the heap size is set properly.
Unfortunately I don't think there's any way other than -Xss to set the stack size in a JNLP file, and I need to do that too.
It's also possible that I screwed something up which caused this problem, but I reproduced it on both my Mac Pro and my Macbook Pro.

Similar Messages

Customize the "update message" for Java Web Start

For the default value (false) of silentInstallLicenseAcceptance in Java Web Start when an application's server side has changed, the user will be asked with a message box whether he/she wants to update his local application now or quit the application.
I would like to know if I can manipulate the message that Java Web Start should ask the user. I also would like to know if I can change the button from Yes/No to Upgrade Now and Upgrade Later.
Any API reference, idea, tutorial or sample code would be appreciated.

I'm pretty sure that list is not accurate for the Java Web Start released in Update 4 recently. I have an app which attempts to specify heap and stack sizes using java-vm-args="-Xmx1024m -Xms1024m -Xss8m"; when I use the Java console to display memory usage, it shows that the heap is 81MB (which is the default). If I use initial-heap-size="1024m" max-heap-size="1024m" in the same JNLP file, the heap size is set properly.
Unfortunately I don't think there's any way other than -Xss to set the stack size in a JNLP file, and I need to do that too.
It's also possible that I screwed something up which caused this problem, but I reproduced it on both my Mac Pro and my Macbook Pro.

Java Web Start no longer works after Update 4 (2)

There was another thread under this title for which a solution was found by correcting the designated "open with" app back to Java Web Start.
My problem however is the Java Web Start simply crashes every time i try to open it since the installation of Java Update 4. And I also have a couple of Java apps that also refuse to open since this update.
Any one have any ideas on how to fix this?

Hi,
Try this....
Go to Applcations>Utilities>Java utility and check to see whether it is denying requests to run the java applications. You will need to check the tabs and the options in it to identify the right one.
Also you can try this...
Remove the com.apple.launchservices.plist fron ~/Library/Preferences.
Regards and Good Luck

Java Web Start no longer works after Update 4

After applying the update to Java for Mac OS X 10.5 Update 4, my webstart files (.jnlp) now all think they are Internet Explorer files to be opened in Parallels.
Does anyone know how to re-associate these files with Java? Or, otherwise, a workaround to enable me to access the applications again.

You are not alone. This has happened to me and to others. And Apple is aware of the problem.
There seem to be 2 ways.
1. Find the JNLP file in the Finder. Select "Get Info". Choose other from the Open With Pull Down Menu. Navigate to /System/Library/CoreServices and find Java Web Start.app. Then click Change All.
2. Open /System/Library/CoreServices in the Finder. This was suggested by nyagil (http://discussions.apple.com/message.jspa?messageID=9634326#9685181).

First Java Web Start download doesn't update, second time does

I'm using Java Web Start with our application. This release we upgraded to java 1.5 from 1.4. Now I have a few PCs, not all, that do not get updates the first time they launch the application. But when the launch it the second time they get the download. The jnlp didn't change between releases? Any suggestions? I'm not using lazy loads, in fact I'm using the default which should be eager.
Thanks.

Hi,
I have similar situation. At the machine is installed Java 1.6 u1. Setup first version of application. After deploy second version of application and run application start update, but console show that application use old packages. At the same time main package is uploaded? I'd try to use <update check="always"?> but there are no positive result.
At the same time then installed Java 1.6 u2, all works fine.
Any suggestion, how it could be resolved, without Java 1.6 u2 installation?
Thans, Kirll.

Java web start security dialog with Java 7 update 51

I build a Java Web Start application signed with a valid certificate.
When I star the application the security dialog appear correctly as show in this figure
http://www.java.com/en/img/download/trusted_signed.jpg
My issue is about the "do not show again" checkbox.
If the attributes href are present in the jnlp tag of the jnlp file the checkbox appear.
If the attribute are not present, the checkbox doesn't appear and the run needs to be confirmed every time.
(Example:
<jnlp spec="1.0+" codebase=
"http://docs.oracle.com/javase/tutorialJWS/samples/deployment/webstart_ComponentArch_DynamicTreeDemo"
href="dynamictree_webstart.jnlp">
This is a problem because my jnlp file is under a password protected directory and if href is specifed, the Java Web Start application try to retrieve it as the other resources. ( result in access denied because only the browser session is authenticated and the run fails)
The documentation at Deploying a Java Web Start Application said:
The codebase and href attributes are optional when deploying Java Web Start applications that will run on at least the Java SE 6 update 18 release or later. You must specify the codebase and href attributes when deploying Java Web Start applications that will run with previous releases of the Java Runtime Environment software.
What is the right code? With href or without?
Is this a BUG or a feature?
How can I show the "don't show again" checkbox without having to specify the href attribute?

From the documentation at JAR File Manifest Attributes for Security
If the Application-Library-Allowable-Codebase attribute is present and matches the location from which the RIA is started, then a single host is listed in the Location field for the prompt and the option to hide future prompts is provided.
This issue is also discussed here: Java Web Start security dialogs with Java 7 update 51 - Stack Overflow

Java 7 Update 25 breaks Java Web Start on Mac OS X

Hello,
After the update on Mac OS X 10.8.4 it is no longer possible to launch Web Start applications. The Java 7 splash screen appears for a brief moment, but the application isn't started. There is a Java Web Start process that remains though. I also tried this on the command-line with the same result.
Best regards,
Werner.

As the website said, Java Web Start is only supported on Mac OS X 10.1.
http://java.sun.com/products/javawebstart/
Cheers,
A.A.
I would like to know if Java Web Start works on Mac OS
8 and 9. If the answer is yes, would you please let
me know what is the package to download to achieve
that? I would also like people's comment on how
easy/hard is Java Web Start works, if it is buggy, and
how well it is working on Mac OS. I am evaluating
whether we are going to incorporate this technology
into our application. I would highly appreciate your
input.

HT5651 When I execute Java Web Start, I get an error "Java Web Start cannot be opened because of an error " I am running OSX 10.6.8 and Java Update 13. Anyone know why ?

Error :

I still have the problem. This is the error:
Process:         Java Web Start [2760]
Path:            /Users/Admin/UTILITIES/Java/Java Web Start.app/Contents/MacOS/Java Web Start
Identifier:      com.apple.JavaWebStart
Version:         12.2.0 (12.2.0)
Build Info:      JavaApplicationSupport-1450000~1
Code Type:       X86-64 (Native)
Parent Process: launchd [127]
Date/Time:       2013-02-21 17:49:43.369 -0500
OS Version:      Mac OS X 10.6.8 (10K549)
Report Version: 6
Interval Since Last Report:          2712 sec
Crashes Since Last Report:           3
Per-App Crashes Since Last Report:   3
Anonymous UUID:                      383BDFCF-9AA2-4B81-828C-6AD5615B5474
Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000002, 0x0000000000000000
Crashed Thread: 4
Dyld Error Message:
Symbol not found: _JVMGetLatestJVMInfo
Referenced from: /Users/Admin/UTILITIES/Java/Java Web Start.app/Contents/MacOS/Java Web Start
Expected in: /System/Library/Frameworks/JavaVM.framework/Versions/A/JavaVM

Java Web Start Error in through codebase url with SSL

I have created one Java web-start plugin application in swing which is launched from PHP site at browser plugin.
All things were working fine, but when we implemented SSL in our site it stopped working. And when we try to start the application from browser it thorws error like:
Unable to launch Application.
In Java console it puts following log:
JNLP Ref (...): NULL !
#### Java Web Start Error:
#### null
Following is my JNLP file:
<jnlp spec="1.0+" codebase="https://<<server_domain>>/MyPlugin/">
<information>
    <title>Test Plugin</title>
    <vendor>The Java(tm) Tutorial</vendor>
    <homepage href="null"/>
    <description>Test Plugin</description>
    <description kind="short">Test Plugin</description>
    <offline-allowed/>
</information>
<security>
    <all-permissions/>
</security>
<update check="timeout" policy="always"/>
<resources>
    <java version="1.7+"/>
    <jar href="http://<<server_domain>>/MyPluginJar.jar" download="eager" main="false"/>
</resources>
<application-desc>
    <argument>test</argument>
    <argument>test</argument>
    <argument>test</argument>
    <argument>test</argument>
    <argument>test</argument>
</application-desc>
</jnlp>
The issue started only after implementation of SSL in our site. Please provide any solution for this. Many thanks in advance.
P.S. My Jar file is signed by third party authorized certificate.

Have you tried using Rosetta?

Unable to Launch Integration Builder: Java Web Start problem

Hi,
I am unable to launch the integration builder. I am using JDK 1.4.2_05. The java Web Start gives the following error:
Unsigned application requesting unrestricted access to system
Unsigned resource: http://<XIHostName>:50000/rep/repository/aii_util_rb.jar
I have tried deleting the Java web start cache, and even reinstalling the JDK.
Can someone suggest a workaround this problem ?
thanks,
Manish

The Java Web Start cannot accept unsigned jars. If the jars are signed, it will ask in a dialog box if it should allow unrestricted access to this jar.
In my case, I upgraded XI SP0 to SP4, which included updating the Adapter Core, Adapter Framework, and the XI TOOLS to SP4.
On launching the Web start, it seemed that the jars were not getting signed. JWS cannot allow unsigned jars to the client.
These jars are maintained in:
\usr\sap\<SID>\SYS\global\xi\directory_server\javaws\directory
I am having problems with my XI upgrade to SP4, and it is probably not signing the jars.
Do you know why this may be happening ...
thanks,
Manish

Unable to launch application with java web start (OILOM)

I'm connecting to a remote Oracle console from a server, using "oracle integrated lights out manager". I go to "Remote Control" and click on "Launch Console". After that, it download a JNLP file, called "jnlpgenerator-16". I open it with Java7 -web starter- update 5.
After a while hanging I get this error:
Error: Unable to load resource: https://XXX.XXX.XXX.XX:443/Java/JavaRConsole.jar.
In Exception:
com.sun.deploy.net.FailedDownloadException: Unable to load resource: https://XXX.XXX.XXX.XXX:443/Java/JavaRConsole.jar
     at com.sun.deploy.net.DownloadEngine.actionDownload(Unknown Source)
     at com.sun.deploy.net.DownloadEngine.getCacheEntry(Unknown Source)
     at com.sun.deploy.net.DownloadEngine.getCacheEntry(Unknown Source)
     at com.sun.deploy.net.DownloadEngine.getResourceCacheEntry(Unknown Source)
     at com.sun.deploy.net.DownloadEngine.getResourceCacheEntry(Unknown Source)
     at com.sun.deploy.net.DownloadEngine.getResource(Unknown Source)
     at com.sun.javaws.LaunchDownload$DownloadTask.call(Unknown Source)
     at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
     at java.util.concurrent.FutureTask.run(Unknown Source)
     at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
     at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
In Wrapped Exception:
java.net.SocketException: SOCKS server general failure
     at java.net.SocksSocketImpl.connect(Unknown Source)
     at java.net.Socket.connect(Unknown Source)
     at sun.security.ssl.SSLSocketImpl.connect(Unknown Source)
     at sun.security.ssl.BaseSSLSocketImpl.connect(Unknown Source)
     at sun.net.NetworkClient.doConnect(Unknown Source)
     at sun.net.www.http.HttpClient.openServer(Unknown Source)
     at sun.net.www.http.HttpClient.openServer(Unknown Source)
     at sun.net.www.protocol.https.HttpsClient.<init>(Unknown Source)
     at sun.net.www.protocol.https.HttpsClient.New(Unknown Source)
     at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(Unknown Source)
     at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
     at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
     at sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(Unknown Source)
     at com.sun.deploy.net.BasicHttpRequest.doRequest(Unknown Source)
     at com.sun.deploy.net.BasicHttpRequest.doRequest(Unknown Source)
     at com.sun.deploy.net.BasicHttpRequest.doGetRequest(Unknown Source)
     at com.sun.deploy.net.DownloadEngine.actionDownload(Unknown Source)
     at com.sun.deploy.net.DownloadEngine.getCacheEntry(Unknown Source)
     at com.sun.deploy.net.DownloadEngine.getCacheEntry(Unknown Source)
     at com.sun.deploy.net.DownloadEngine.getResourceCacheEntry(Unknown Source)
     at com.sun.deploy.net.DownloadEngine.getResourceCacheEntry(Unknown Source)
     at com.sun.deploy.net.DownloadEngine.getResource(Unknown Source)
     at com.sun.javaws.LaunchDownload$DownloadTask.call(Unknown Source)
     at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
     at java.util.concurrent.FutureTask.run(Unknown Source)
     at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
     at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
It happens the same under Windows 7 and Linux -using openJRE and icedtea as substitution of Java Web Start-.
I'm behind a proxy. In my browser -Chrome, IE and FF- putted the info of the proxy and I can browse. Aldo tried to put the info in the Java "Network Settings". It did not work -the launching of the console-.
I installed the last Java Web Start in Windows 7 -Java7 Update5-. I disabled my anti-virus and firewall. Always the same result.
Could you help me please. I don't have idea of what is going on.
Greetings.
PD: I tested from other machines of the company and it works. So, I guess is my laptop. I exported the oracle certificates from those machine and imported them into mine.

AndrewThompson64 wrote:
I am not used to seeing references to a local server that do not include a port number.
E.G. http://localhost:8080/LottoMadness/
I have deployed the following HTML (HelpMe.html) to the web server:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
     <title>Untitled</title>
</head>
<body>
Help Me!
</body>
</html>When I attempt to render the URL in IE, I see the page just fine. The URL is use is:
http://localhost/LottoMadness/HelpMe.htmlSo, I think my web server setup and usage is ok.
>
As an aside, what happens if (your MS IIS is running and) you click a direct link to..
[http://localhost/LottoMadness/LottoMadness.jnlp|http://localhost/LottoMadness/LottoMadness.jnlp]
When I click this link I get the error and exception I cited in my previous post.

Java web start application runs too slow...

Hello,
I am new to Java Web Start. I have created a java web start application and when i enable web start from local Execution, then it works perfectly well. But when i upload it on server and then download the application, then it is too too slow...i mean it takes minutes to get the output on clicking some button....my jnlp file is as under:
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<jnlp codebase="http://(web server code base)" href="launch.jnlp" spec="1.0+">
<information>
<title>ERD</title>
<vendor>Deepika Gohil</vendor>
<homepage href="http://appframework.dev.java.net"/>
<description>A simple java desktop application based on Swing Application Framework</description>
<description kind="short">ER Deign Tools</description>
</information>
<update check="always"/>
<security>
<all-permissions/>
</security>
<resources>
<j2se version="1.5+"/>
<jar href="ERD_1_2.jar" main="true"/>
<jar href="lib/appframework-1.0.3.jar"/>
<jar href="lib/swing-worker-1.1.jar"/>
<jar href="lib/jaxb-impl.jar"/>
<jar href="lib/jaxb-xjc.jar"/>
<jar href="lib/jaxb1-impl.jar"/>
<jar href="lib/activation.jar"/>
<jar href="lib/jaxb-api.jar"/>
<jar href="lib/jsr173_api.jar"/>
<jar href="lib/ant-contrib-1.0b3.jar"/>
<jar href="lib/jaxb-impl.jar"/>
<jar href="lib/jaxb-xjc.jar"/>
<jar href="lib/FastInfoset.jar"/>
<jar href="lib/gmbal-api-only.jar"/>
<jar href="lib/http.jar"/>
<jar href="lib/jaxws-rt.jar"/>
<jar href="lib/jaxws-tools.jar"/>
<jar href="lib/management-api.jar"/>
<jar href="lib/mimepull.jar"/>
<jar href="lib/policy.jar"/>
<jar href="lib/saaj-impl.jar"/>
<jar href="lib/stax-ex.jar"/>
<jar href="lib/streambuffer.jar"/>
<jar href="lib/woodstox.jar"/>
<jar href="lib/jaxws-api.jar"/>
<jar href="lib/jsr181-api.jar"/>
<jar href="lib/jsr250-api.jar"/>
<jar href="lib/saaj-api.jar"/>
<jar href="lib/activation.jar"/>
<jar href="lib/jaxb-api.jar"/>
<jar href="lib/jsr173_api.jar"/>
</resources>
<application-desc main-class="erd.screen1">
</application-desc>
</jnlp>
I dont understand the reason. Could you please help me out.
Thank you,
Deepika Gohil.

Check your web server's access logs to see how many requests web start is sending for each jar. After you've loaded the application the first time, for each subsequent launch, if you've got everything configured right, you should only see requests for the JNLP file and maybe some gifs because web start should load everything else out of the cache (if you're using the version-based download protocol). Or if you're using the basic download protocol, then you might see requests for each jar file, but even in this case, if your web server is prepared to evaluate the last-updated attribute for each jar request and for jars that have not changed, respond with no actual payload and a header value of Not-Modified, then that should run almost as fast.
You might also want to consider changing the "check" attribute of the "update" element from "always" to "background" for a couple of reasons. It should allow your app to start sooner (but this means that you might have to launch once or twice after an update is applied to the web server before the update shows up on the workstation). Also, my impression is that "always" is broken and prevents web start from ever checking to see if your jnlp file has been updated if you launch your app from a web start shortcut - launching from a browser is less likely to have this problem, depending on how often your browser is configured to check for updated resources.

Java Web Start 1.6 fails to start application without Java Consol on Vista

Hi All,
I've faced with problem related to starting my application in IE 7 on Vista SP1 using Java Web Start (JRE 1.6.0_12 and 1.6.0_13). I suppose that issue appears after 11th update of JRE 1.6 since it works fine before.
There were set settings to indicate initial and maximal size of the Java heap in the JNLP file.
Application consist of 2 JAR files and they are signed with the same certificate.
When user tried to start application there is no any activity after accepting certificate. After starting application javaw.exe just disappeared from processes list without any message or error.
When I changed default setting in Java Control Panel to show Java Console, I noticed that the application began to start. But it's not a solution of the issue, since all customers cannot be required to turn on Java console.
I believe this is a bug in JRE as the application starts with Java console and doesn't without it.
When I browsed the web looking for the solution or an advice I found Release notes for 1.6.0_014 where it was said that 6u14 Java Web Start failed to launch and notifies that JARs were not signed, if an insecure Java system property was specified in a sandbox JNLP file. In spite of that 14th updated wasn't used and there was no notification I tried to start application without settings for the Java heap and it worked.
Could someone help me with advice, since the application cannot be started with default heap size settings.
Thanks in advance.
Edited by: vovanst on Jul 28, 2009 8:06 AM

Hi,
as the 6u15 just arrived and the above mentioned bug should've been fixed (though I was unable to verify through the release notes), the error is still in there.
We have no timestamped jars, neither ours nor the bouncy castle ones, all certs are valid, ours is self signed.
6u13 runs, 6u14/6u15 won't.
I followed the instructions here: http://bouncycastle.org/devmailarchive/msg10415.html to no avail.
The bcprov.jar is wrapped in its own jnlp and referred as extension from the "main" jnlp.
The interesting parts of the stack trace are these:
Caused by (via getCause): java.lang.SecurityException: JCE cannot authenticate the provider BC
     at javax.crypto.Cipher.getInstance(DashoA13*..)
     at javax.crypto.Cipher.getInstance(DashoA13*..)
Caused by (via getCause): java.util.jar.JarException: Cannot parse https://localhost:8443/deploy/bcprov.jar
     at javax.crypto.SunJCE_c.a(DashoA13*..)
     at javax.crypto.SunJCE_b.b(DashoA13*..)
     at javax.crypto.SunJCE_b.a(DashoA13*..)
     at javax.crypto.Cipher.getInstance(DashoA13*..)
     at javax.crypto.Cipher.getInstance(DashoA13*..)
For me it seems there's a problem with resolving the url of the bcprov.jar, which would explain the lack of a delay which normally occurs when JCE verifies the signature of the bcprov provider classes. The error pops up almost instantly.
I'm clueless what to do now. Did Sun really achieve to completely destroy JCE provider functionality in Javaws, forcing us to use an alternative implementation?
Patric

How to setup Proxy for Java Web Start App ?

I'm having trouble getting Java Web Start to work.
at... http://java.sun.com/docs/books/tutorial/uiswing/14start/compile.html
It tell me...
To test whether your browser can launch an application using Java Web Start, click this link.
http://java.sun.com/docs/books/tutorialJWS/uiswing/14start/example-1dot4/HelloJWS.jnlp
I do that & see Java Web Start try to start but get message...
Java Web Start - Invalid Argument
Unable to launch specified application
An error occurred while launching/running the application.
Category: Invalid Argument error
Could not load file/URL specified: C:\Documents and Settings\Will\Local Settings\Temporary Internet Files\Content.IE5\OP8RSBCV\HelloJWS[1].jnlp
Then... http://java.sun.com/docs/books/tutorial/information/javawebstart.html tells me...
"This situation usually happens when your browser and your copy of Java Web Start have different proxy settings."
I click Start | Programs | Java Web Start | Java Web Start,,, then click File | Preferences | General
My choices are... Proxies: None User Browser _ Manual (User Browser grayed out)
If _ Manual checked then I get...
HTTP Proxy ______
HTTP Port _______
I'm running XP Pro via Wi Fi to a Linksys Wi Fi router to a cable modem... I'm also running Zone Alarm (tried turning it off but no luck)
I don't know how to set up the Proxy stuff... can any one please help me get this set up.
thanks - Will

OK, on my XP Pro system I went to...
Start IE -> Control Panel -> Internet Options -> Connections -> Lan Settings -> Proxy Settings
This is my 'Local Area network (LAN) Settings panel...
- user Proxy server for LAN is checked
- Address is blank
- Port is blank
So do I plug something in here... the ip address of my linksys wi-fi router and a port number or what?
My Java Web Start Preferences won't let me click 'Use Browser' only None or Manual
If I click Manual, I don't know what to plug into the HTTP Proxy and HTTP Port fields...
I tried the ip address of my router... thinking it may have a built in Proxy Server... and port 8080 as indicated by the Help page for the Java Web Start... but no luck.
I really appriceate any help on this...
thanks - Will

Java web start unable to auto download java 1.6.0_14

Hi,
My application runs on java 1.6.0_14 and i want clients to use either 1.6.0_14 or higher while running the application. In the JNLP file i have mentioned j2se version as 1.6.0_14+
If the client machine has a java version lesser than 1.6.0_14, Java web start is not automatically downloading the given version from sun auto download site.
Isn' t this version supported by Sun for auto download? If yes, how to get around this problem?

Thanks..
We do have a web page from which we access the jnlp and that web page has javascript to force download of a specific version of JRE. Once it downloads the application on client machine, it creates an icon on the desktop.
If the application and jnlp is changed on the server, we want clients to go through the icon on desktop and still get the version of jre mentioned in the updated jnlp rather than having them go through the web page again do download the new JRE required...

Java Update 4 -- "Safe" java-vm-args Arguments for Java Web Start?

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