Fatal: Read Error: Could not read or parse the JNLP file.

Hi,

A French public structure provides a portal for submitting responses to calls for tenders from municipalities.

They provide a test page:
https://marches.megalis.bretagne.bzh/index.php?page=entreprise.DiagnosticPoste&callFrom=entreprise

The portal uses a jnlp script.

To use this portal, I have a virtual machine with an old Windows XP, an old firefox and the java plugin, because Java no longer works with Windows 10 and recent firefox.

On my Linux workstation, when I test this script, icedtea starts well but produces an error. I don't know if this is possible, but I would rather access this portal from my Linux workstation and IcedTea-Web than from a Windows XP virtual machine.

Regards.

The error messages are:
```
net.sourceforge.jnlp.LaunchException: Fatal: Read Error: Could not read or parse the JNLP file. You can try to download this file manually and send it as bug report to IcedTea-Web team.
at java.desktop/net.sourceforge.jnlp.Launcher.fromUrl(Launcher.java:489)
at java.desktop/net.sourceforge.jnlp.Launcher.launch(Launcher.java:289)
at java.desktop/net.sourceforge.jnlp.runtime.JnlpBoot.run(JnlpBoot.java:67)
at java.desktop/net.sourceforge.jnlp.runtime.Boot.run(Boot.java:270)
at java.desktop/net.sourceforge.jnlp.runtime.Boot.run(Boot.java:63)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.desktop/net.sourceforge.jnlp.runtime.Boot.main(Boot.java:210)
Caused by: java.io.IOException: java.lang.NullPointerException: name can't be null
at java.desktop/net.sourceforge.jnlp.JNLPFile.openURL(JNLPFile.java:319)
at java.desktop/net.sourceforge.jnlp.JNLPFile.(JNLPFile.java:241)
at java.desktop/net.sourceforge.jnlp.JNLPFile.(JNLPFile.java:215)
at java.desktop/net.sourceforge.jnlp.JNLPFile.(JNLPFile.java:200)
at java.desktop/net.sourceforge.jnlp.JNLPFile.(JNLPFile.java:186)
at java.desktop/net.sourceforge.jnlp.Launcher.fromUrl(Launcher.java:453)
... 6 more
Caused by: java.lang.NullPointerException: name can't be null
at java.base/java.io.FilePermission.init(FilePermission.java:321)
at java.base/java.io.FilePermission.(FilePermission.java:488)
at java.base/java.lang.SecurityManager.checkRead(SecurityManager.java:661)
at java.base/java.io.FileInputStream.(FileInputStream.java:146)
at java.desktop/net.sourceforge.jnlp.JNLPFile.openURL(JNLPFile.java:317)
... 11 more
```

The output of the java console:

```
net.sourceforge.jnlp.LaunchException: Fatal: Read Error: Could not read or parse the JNLP file. You can try to download this file manually and send it as bug report to IcedTea-Web team.
    at java.desktop/net.sourceforge.jnlp.Launcher.fromUrl(Launcher.java:489)
    at java.desktop/net.sourceforge.jnlp.Launcher.launch(Launcher.java:289)
    at java.desktop/net.sourceforge.jnlp.runtime.JnlpBoot.run(JnlpBoot.java:67)
    at java.desktop/net.sourceforge.jnlp.runtime.Boot.run(Boot.java:270)
    at java.desktop/net.sourceforge.jnlp.runtime.Boot.run(Boot.java:63)
    at java.base/java.security.AccessController.doPrivileged(Native Method)
    at java.desktop/net.sourceforge.jnlp.runtime.Boot.main(Boot.java:210)
Caused by: java.io.IOException: java.lang.NullPointerException: name can't be null
    at java.desktop/net.sourceforge.jnlp.JNLPFile.openURL(JNLPFile.java:319)
    at java.desktop/net.sourceforge.jnlp.JNLPFile.(JNLPFile.java:241)
    at java.desktop/net.sourceforge.jnlp.JNLPFile.(JNLPFile.java:215)
    at java.desktop/net.sourceforge.jnlp.JNLPFile.(JNLPFile.java:200)
    at java.desktop/net.sourceforge.jnlp.JNLPFile.(JNLPFile.java:186)
    at java.desktop/net.sourceforge.jnlp.Launcher.fromUrl(Launcher.java:453)
    ... 6 more
Caused by: java.lang.NullPointerException: name can't be null
    at java.base/java.io.FilePermission.init(FilePermission.java:321)
    at java.base/java.io.FilePermission.(FilePermission.java:488)
    at java.base/java.lang.SecurityManager.checkRead(SecurityManager.java:661)
    at java.base/java.io.FileInputStream.(FileInputStream.java:146)
    at java.desktop/net.sourceforge.jnlp.JNLPFile.openURL(JNLPFile.java:317)
    ... 11 more
netx: Read Error: Could not read or parse the JNLP file. (java.lang.NullPointerException: name can't be null (name can't be null))
Removed sun.net.www.protocol.https.DelegateHttpsURLConnection:https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature
Disconnecting sun.net.www.protocol.https.DelegateHttpsURLConnection:https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature
java.io.EOFException: Unexpected end of ZLIB input stream
    at java.base/java.util.zip.InflaterInputStream.fill(InflaterInputStream.java:245)
    at java.base/java.util.zip.InflaterInputStream.read(InflaterInputStream.java:159)
    at java.base/java.util.zip.GZIPInputStream.read(GZIPInputStream.java:118)
    at java.base/java.io.BufferedInputStream.fill(BufferedInputStream.java:252)
    at java.base/java.io.BufferedInputStream.read1(BufferedInputStream.java:292)
    at java.base/java.io.BufferedInputStream.read(BufferedInputStream.java:351)
    at java.base/java.io.FilterInputStream.read(FilterInputStream.java:107)
    at java.desktop/net.sourceforge.jnlp.cache.ResourceDownloader.uncompressGzip(ResourceDownloader.java:488)
    at java.desktop/net.sourceforge.jnlp.cache.ResourceDownloader.downloadGZipFile(ResourceDownloader.java:405)
    at java.desktop/net.sourceforge.jnlp.cache.ResourceDownloader.downloadResource(ResourceDownloader.java:362)
    at java.desktop/net.sourceforge.jnlp.cache.ResourceDownloader.run(ResourceDownloader.java:118)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
    at java.base/java.lang.Thread.run(Thread.java:834)
Extracting gzip: https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature to https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature
isCurrent:isCached false
Downloading file: https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature into: /home/XXXX/.cache/icedtea-web/cache/0/https/marches.megalis.bretagne.bzh/crypto/signature/outilTest.serveurCryptoURLPublique_https_/marches.megalis.bretagne.bzh/crypto/signature
Downloading https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature using https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature (encoding : gzip)
Selected proxies: [DIRECT]
Browser selected proxies: [DIRECT]
Browser proxy option "4" (Automatic) not supported yet.
Selecting proxy for: https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature
done https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature
Adding sun.net.www.protocol.https.DelegateHttpsURLConnection:https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature
Connecting https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature
Removed sun.net.www.protocol.https.DelegateHttpsURLConnection:https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature
Disconnecting sun.net.www.protocol.https.DelegateHttpsURLConnection:https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature
isCurrent: https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature = false
isCurrent:isCached false
done https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature
Adding sun.net.www.protocol.https.DelegateHttpsURLConnection:https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature
Connecting https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature
best url for location=https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature state=PRECONNECT CONNECTING PREDOWNLOAD PROCESSING is https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature by HEAD
Removed sun.net.www.protocol.https.DelegateHttpsURLConnection:https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature
Disconnecting sun.net.www.protocol.https.DelegateHttpsURLConnection:https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature
Key : Content-Type ,Value : [application/x-java-jnlp-file;charset=ISO-8859-1]
Key : Content-Language ,Value : [fr-FR]
Key : Content-Length ,Value : [2091]
Key : Set-Cookie ,Value : [ROUTEPATH=.node3; path=/, JSESSIONID=66221D04122B1C53308F502211FBB82A;path=/signature/;HttpOnly]
Key : Content-Disposition ,Value : [attachment; filename="Outil de test de configuration.jnlp"]
Key : Access-Control-Allow-Credentials ,Value : [true]
Key : Strict-Transport-Security ,Value : [max-age=31536000; includeSubDomains]
Key : Date ,Value : [Fri, 19 Feb 2021 16:20:42 GMT]
Key : Connection ,Value : [Keep-Alive]
Key : Access-Control-Allow-Origin ,Value : [https://socle.megalis.bretagne.bzh]
Key : Server ,Value : [Apache TomEE]
Key : null ,Value : [HTTP/1.1 200]
Key : Keep-Alive ,Value : [timeout=5, max=1000]
Selected proxies: [DIRECT]
Browser selected proxies: [DIRECT]
Browser proxy option "4" (Automatic) not supported yet.
Selecting proxy for: socket://marches.megalis.bretagne.bzh:443
Selected proxies: [DIRECT]
Browser selected proxies: [DIRECT]
Browser proxy option "4" (Automatic) not supported yet.
Selecting proxy for: https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature
done https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature
Adding sun.net.www.protocol.https.DelegateHttpsURLConnection:https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature
Connecting https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature
All possible urls for location=https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature state=PRECONNECT CONNECTING PREDOWNLOAD PROCESSING : [https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature, https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature]
Finding best URL for: https://marches.megalis.bretagne.bzh/crypto/signature/outilTest?serveurCryptoURLPublique=https://marches.megalis.bretagne.bzh/crypto/signature : DownloadOptions[use pack: false; use version: false]
good - your JRE - 11.0.10 - match requested JRE - 1.8+
Acceptable vendor tag found, contains: Atexo
Acceptable title tag found, contains: Signature Electronique
Jars not ready to provide attribute Application-Name
Description: null
Homepage: null
line: 36

line: 35
line: 34
line: 33   
line: 32   
line: 31        https://marches.megalis.bretagne.bzh/crypto/signature/signatureXades
line: 30   
line: 29
line: 28   
line: 27       
line: 26   
line: 25
line: 24   
line: 23                
line: 22         
line: 21       
line: 20       
line: 19       
line: 18       
line: 17       
line: 16       
line: 15       
line: 14       
line: 13       
line: 12       
line: 11   
line: 10   
line: 9
line: 8       
line: 7        Atexo
line: 6        Signature Electronique
line: 5   
line: 4
line: 3
line: 2

Using MalformedXMLParser
JNLP file location: /tmp/mozilla_XXXX0/Outil de test de configuration-2.jnlp
Proceeding with jnlp
Read 2786 entries from Firefox's preferences
Found preferences file: /home/XXXX/.mozilla/firefox/XXXX.default/prefs.js
Using firefox's profiles file: /home/XXXX/.mozilla/firefox/profiles.ini
Starting security dialog thread
Forcing of offline set to: false
OK: Directory /home/XXXX/.cache/icedtea-web/tmp did not exist but has been created
OK: Directory /home/XXXX/.cache/icedtea-web/pcache did not exist but has been created
OK: Directory /home/XXXX/.cache/icedtea-web/cache did not exist but has been created
WARNING: key deployment.system.cachedir has no value, setting to default value
java.io.FileNotFoundException: /home/XXXX/.config/icedtea-web/deployment.properties (Aucun fichier ou dossier de ce type)
    at java.base/java.io.FileInputStream.open0(Native Method)
    at java.base/java.io.FileInputStream.open(FileInputStream.java:219)
    at java.base/java.io.FileInputStream.(FileInputStream.java:157)
    at java.base/java.io.FileInputStream.(FileInputStream.java:112)
    at java.base/sun.net.www.protocol.file.FileURLConnection.connect(FileURLConnection.java:86)
    at java.base/sun.net.www.protocol.file.FileURLConnection.getInputStream(FileURLConnection.java:184)
    at java.base/java.net.URL.openStream(URL.java:1140)
    at java.desktop/net.sourceforge.jnlp.config.DeploymentConfiguration.loadComments(DeploymentConfiguration.java:928)
    at java.desktop/net.sourceforge.jnlp.config.DeploymentConfiguration.load(DeploymentConfiguration.java:385)
    at java.desktop/net.sourceforge.jnlp.config.DeploymentConfiguration.load(DeploymentConfiguration.java:347)
    at java.desktop/net.sourceforge.jnlp.config.DeploymentConfiguration.load(DeploymentConfiguration.java:325)
    at java.desktop/net.sourceforge.jnlp.runtime.JNLPRuntime$DeploymentConfigurationHolder.initConfiguration(JNLPRuntime.java:457)
    at java.desktop/net.sourceforge.jnlp.runtime.JNLPRuntime$DeploymentConfigurationHolder.(JNLPRuntime.java:452)
    at java.desktop/net.sourceforge.jnlp.runtime.JNLPRuntime.getConfiguration(JNLPRuntime.java:487)
    at java.desktop/net.sourceforge.jnlp.config.DirectoryValidator.(DirectoryValidator.java:226)
    at java.desktop/net.sourceforge.jnlp.config.DeploymentConfiguration.move14AndOlderFilesTo15Structure(DeploymentConfiguration.java:886)
    at java.desktop/net.sourceforge.jnlp.config.DeploymentConfiguration.move14AndOlderFilesTo15StructureCatched(DeploymentConfiguration.java:786)
    at java.desktop/net.sourceforge.jnlp.runtime.Boot.main(Boot.java:121)
No User level deployment.properties found.
java.io.FileNotFoundException: /home/XXXX/.config/icedtea-web/deployment.properties (Aucun fichier ou dossier de ce type)     at java.base/java.io.FileInputStream.open0(Native Method)
    at java.base/java.io.FileInputStream.open(FileInputStream.java:219)
    at java.base/java.io.FileInputStream.(FileInputStream.java:157)
    at java.base/java.io.FileInputStream.(FileInputStream.java:112)
    at java.base/sun.net.www.protocol.file.FileURLConnection.connect(FileURLConnection.java:86)
    at java.base/sun.net.www.protocol.file.FileURLConnection.getInputStream(FileURLConnection.java:184)
    at java.base/java.net.URL.openStream(URL.java:1140)
    at java.desktop/net.sourceforge.jnlp.config.DeploymentConfiguration.parsePropertiesFile(DeploymentConfiguration.java:711)
    at java.desktop/net.sourceforge.jnlp.config.DeploymentConfiguration.findSystemConfigFile(DeploymentConfiguration.java:533)
    at java.desktop/net.sourceforge.jnlp.config.DeploymentConfiguration.load(DeploymentConfiguration.java:345)
    at java.desktop/net.sourceforge.jnlp.config.DeploymentConfiguration.load(DeploymentConfiguration.java:325)
    at java.desktop/net.sourceforge.jnlp.runtime.JNLPRuntime$DeploymentConfigurationHolder.initConfiguration(JNLPRuntime.java:457)
    at java.desktop/net.sourceforge.jnlp.runtime.JNLPRuntime$DeploymentConfigurationHolder.(JNLPRuntime.java:452)
    at java.desktop/net.sourceforge.jnlp.runtime.JNLPRuntime.getConfiguration(JNLPRuntime.java:487)
    at java.desktop/net.sourceforge.jnlp.config.DirectoryValidator.(DirectoryValidator.java:226)
    at java.desktop/net.sourceforge.jnlp.config.DeploymentConfiguration.move14AndOlderFilesTo15Structure(DeploymentConfiguration.java:886)
    at java.desktop/net.sourceforge.jnlp.config.DeploymentConfiguration.move14AndOlderFilesTo15StructureCatched(DeploymentConfiguration.java:786)
    at java.desktop/net.sourceforge.jnlp.runtime.Boot.main(Boot.java:121)
Ico provider registered correctly.
cache: /home/XXXX/.cache/icedtea-web file exists:false
config: /home/XXXX/.config/icedtea-web file exists: true
System is already following XDG .cache and .config specifications
```