(java.net.SocketException) caught when connecting to the target host: Invalid argument: connect

Discussion:

Gary White

2012-08-03 13:22:53 UTC

I encountered the above error (more complete listing at end of email/post)
on a new Windows 7 64 bit machine that I'm in the process of setting up. I
originally encountered problems running mvn against a few projects that I
had moved from an XP machine and decided to troubleshoot using the following
basic command from Maven By Example that is used to create a simple project:

mvn archetype:generate -DgroupId=org.sonatype.mavenbook.simple
-DartifactId=simple -Dpackage=org.sonatype -Dversion=1.0-SNAPSHOT

I've tried this with both the 32 & 64 bit versions of JDK 7u5. I tried
Maven versions 2.2.1, 3.0.3 and 3.0.4 (output below is from 3.0.4). I've
also tried it with Windows Firewall completely disabled and AV completely
removed. I'm connected via Verizon FIOS with the default router setup.
Maven works fine on the other XP machine on the same network.

Any help is greatly appreciated.

Gary

Truncated output follows (I can send complete output if necessary); note -
the error repeats for each of the following plugins:

org.apache.maven.plugins:maven-clean-plugin:2.4.1

org.apache.maven.plugins:maven-install-plugin:2.3.1

org.apache.maven.plugins:maven-deploy-plugin:2.7

org.apache.maven.plugins:maven-site-plugin:3.0

org.apache.maven.plugins:maven-antrun-plugin:1.3

org.apache.maven.plugins:maven-assembly-plugin:2.2-beta-5

org.apache.maven.plugins:maven-dependency-plugin:2.1

org.apache.maven.plugins:maven-release-plugin:2.0

Output:

C:\workspace\ch-simple>mvn archetype:generate
-DgroupId=org.sonatype.mavenbook.simple -DartifactId=simple
-Dpackage=org.sonatype -Dversion=1.0-SNAPSHOT -e -X

Apache Maven 3.0.4 (r1232337; 2012-01-17 03:44:56-0500)

Maven home: C:\Tools\apache-maven

Java version: 1.7.0_05, vendor: Oracle Corporation

Java home: C:\Program Files (x86)\Java\jdk1.7.0_05\jre

Default locale: en_US, platform encoding: Cp1252

OS name: "windows 7", version: "6.1", arch: "x86", family: "windows"

[INFO] Error stacktraces are turned on.

[DEBUG] Reading global settings from C:\Tools\apache-maven\conf\settings.xml

[DEBUG] Reading user settings from C:\Users\Gary\.m2\settings.xml

[DEBUG] Using local repository at C:\Users\Gary\.m2\repository

[DEBUG] Using manager EnhancedLocalRepositoryManager with priority 10 for
C:\Users\Gary\.m2\repository

[INFO] Scanning for projects...

[DEBUG] Extension realms for project org.apache.maven:standalone-pom:pom:1:
(none)

[DEBUG] Looking up lifecyle mappings for packaging pom from
ClassRealm[plexus.core, parent: null]

[DEBUG] Resolving plugin prefix archetype from [org.apache.maven.plugins,
org.codehaus.mojo]

[DEBUG] Using connector WagonRepositoryConnector with priority 0 for
http://repo.maven.apache.org/maven2

Downloading:
http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-clean-plu
gin/2.4.1/maven-clean-plugin-2.4.1.pom

Aug 03, 2012 8:00:44 AM
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRequestD
irector tryConnect

INFO: I/O exception (java.net.SocketException) caught when connecting to the
target host: Invalid argument: connect

Aug 03, 2012 8:00:44 AM
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRequestD
irector tryConnect

INFO: Retrying connect

Aug 03, 2012 8:00:44 AM
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRequestD
irector tryConnect

INFO: I/O exception (java.net.SocketException) caught when connecting to the
target host: Invalid argument: connect

Aug 03, 2012 8:00:44 AM
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRequestD
irector tryConnect

INFO: Retrying connect

Aug 03, 2012 8:00:44 AM
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRequestD
irector tryConnect

INFO: I/O exception (java.net.SocketException) caught when connecting to the
target host: Invalid argument: connect

Aug 03, 2012 8:00:44 AM
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRequestD
irector tryConnect

INFO: Retrying connect

[DEBUG] Writing resolution tracking file
C:\Users\Gary\.m2\repository\org\apache\maven\plugins\maven-clean-plugin\2.4
.1\maven-clean-plugin-2.4.1.pom.lastUpdated

[WARNING] Failed to retrieve plugin descriptor for
org.apache.maven.plugins:maven-clean-plugin:2.4.1: Plugin
org.apache.maven.plugins:maven-clean-plugin:2.4.1 or one of its dependencies
could not be resolved: Failed to read artifact descriptor for
org.apache.maven.plugins:maven-clean-plugin:jar:2.4.1

org.apache.maven.plugin.PluginResolutionException: Plugin
org.apache.maven.plugins:maven-clean-plugin:2.4.1 or one of its dependencies
could not be resolved: Failed to read artifact descriptor for
org.apache.maven.plugins:maven-clean-plugin:jar:2.4.1

at
org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolve(D
efaultPluginDependenciesResolver.java:129)

at
org.apache.maven.plugin.internal.DefaultMavenPluginManager.getPluginDescript
or(DefaultMavenPluginManager.java:142)

at
org.apache.maven.plugin.DefaultBuildPluginManager.loadPlugin(DefaultBuildPlu
ginManager.java:59)

at
org.apache.maven.plugin.prefix.internal.DefaultPluginPrefixResolver.resolveF
romProject(DefaultPluginPrefixResolver.java:139)

at
org.apache.maven.plugin.prefix.internal.DefaultPluginPrefixResolver.resolveF
romProject(DefaultPluginPrefixResolver.java:122)

at
org.apache.maven.plugin.prefix.internal.DefaultPluginPrefixResolver.resolve(
DefaultPluginPrefixResolver.java:86)

at
org.apache.maven.lifecycle.internal.MojoDescriptorCreator.findPluginForPrefi
x(MojoDescriptorCreator.java:262)

at
org.apache.maven.lifecycle.internal.MojoDescriptorCreator.getMojoDescriptor(
MojoDescriptorCreator.java:222)

at
org.apache.maven.lifecycle.internal.DefaultLifecycleTaskSegmentCalculator.ca
lculateTaskSegments(DefaultLifecycleTaskSegmentCalculator.java:106)

at
org.apache.maven.lifecycle.internal.DefaultLifecycleTaskSegmentCalculator.ca
lculateTaskSegments(DefaultLifecycleTaskSegmentCalculator.java:86)

at
org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarte
r.java:98)

at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)

at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)

at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)

at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)

at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57
)

at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl
.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

at
org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.ja
va:290)

at
org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)

at
org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.
java:409)

at
org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)

Caused by: org.sonatype.aether.resolution.ArtifactDescriptorException:
Failed to read artifact descriptor for
org.apache.maven.plugins:maven-clean-plugin:jar:2.4.1

at
org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom
(DefaultArtifactDescriptorReader.java:296)

at
org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArt
ifactDescriptor(DefaultArtifactDescriptorReader.java:186)

at
org.sonatype.aether.impl.internal.DefaultRepositorySystem.readArtifactDescri
ptor(DefaultRepositorySystem.java:279)

at
org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolve(D
efaultPluginDependenciesResolver.java:115)

... 23 more

Caused by: org.sonatype.aether.resolution.ArtifactResolutionException: Could
not transfer artifact org.apache.maven.plugins:maven-clean-plugin:pom:2.4.1
from/to central (http://repo.maven.apache.org/maven2): Invalid argument:
connect

at
org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolve(DefaultArt
ifactResolver.java:538)

at
org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolveArtifacts(D
efaultArtifactResolver.java:216)

at
org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolveArtifact(De
faultArtifactResolver.java:193)

at
org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom
(DefaultArtifactDescriptorReader.java:281)

... 26 more

Caused by: org.sonatype.aether.transfer.ArtifactTransferException: Could not
transfer artifact org.apache.maven.plugins:maven-clean-plugin:pom:2.4.1
from/to central (http://repo.maven.apache.org/maven2): Invalid argument:
connect

at
org.sonatype.aether.connector.wagon.WagonRepositoryConnector$4.wrap(WagonRep
ositoryConnector.java:951)

at
org.sonatype.aether.connector.wagon.WagonRepositoryConnector$4.wrap(WagonRep
ositoryConnector.java:941)

at
org.sonatype.aether.connector.wagon.WagonRepositoryConnector$GetTask.run(Wag
onRepositoryConnector.java:669)

at
org.sonatype.aether.util.concurrency.RunnableErrorForwarder$1.run(RunnableEr
rorForwarder.java:60)

at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:11
10)

at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:6
03)

at java.lang.Thread.run(Thread.java:722)

Caused by: org.apache.maven.wagon.TransferFailedException: Invalid argument:
connect

at
org.apache.maven.wagon.shared.http4.AbstractHttpClientWagon.fillInputData(Ab
stractHttpClientWagon.java:799)

at
org.apache.maven.wagon.StreamWagon.getInputStream(StreamWagon.java:116)

at
org.apache.maven.wagon.StreamWagon.getIfNewer(StreamWagon.java:88)

at org.apache.maven.wagon.StreamWagon.get(StreamWagon.java:61)

at
org.sonatype.aether.connector.wagon.WagonRepositoryConnector$GetTask.run(Wag
onRepositoryConnector.java:601)

... 4 more

Caused by: java.net.SocketException: Invalid argument: connect

at java.net.DualStackPlainSocketImpl.connect0(Native Method)

at
java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.jav
a:69)

at
java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)

at
java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.ja
va:200)

at
java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)

at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:157)

at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391)

at java.net.Socket.connect(Socket.java:579)

at
org.apache.maven.wagon.providers.http.httpclient.conn.scheme.PlainSocketFact
ory.connectSocket(PlainSocketFactory.java:123)

at
org.apache.maven.wagon.providers.http.httpclient.impl.conn.DefaultClientConn
ectionOperator.openConnection(DefaultClientConnectionOperator.java:148)

at
org.apache.maven.wagon.providers.http.httpclient.impl.conn.AbstractPoolEntry
.open(AbstractPoolEntry.java:149)

at
org.apache.maven.wagon.providers.http.httpclient.impl.conn.AbstractPooledCon
nAdapter.open(AbstractPooledConnAdapter.java:121)

at
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRequestD
irector.tryConnect(DefaultRequestDirector.java:573)

at
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRequestD
irector.execute(DefaultRequestDirector.java:425)

at
org.apache.maven.wagon.providers.http.httpclient.impl.client.AbstractHttpCli
ent.execute(AbstractHttpClient.java:820)

at
org.apache.maven.wagon.providers.http.httpclient.impl.client.AbstractHttpCli
ent.execute(AbstractHttpClient.java:754)

at
org.apache.maven.wagon.shared.http4.AbstractHttpClientWagon.execute(Abstract
HttpClientWagon.java:674)

at
org.apache.maven.wagon.shared.http4.AbstractHttpClientWagon.fillInputData(Ab
stractHttpClientWagon.java:793)

... 8 more

Markku Saarela

2012-08-04 09:01:29 UTC

Permalink

Hi,

You probably hit IPv4 vs IPv6 incompatibility. JDK 7 uses IPv6 by
default to connect (if OS and network adapter supports it).

Try run Java with this VM argument -Djava.net.preferIPv4Stack=true or
try to set your network adapted only use IPv4 .

Markku

Post by Gary White
I encountered the above error (more complete listing at end of email/post)
on a new Windows 7 64 bit machine that I'm in the process of setting up. I
originally encountered problems running mvn against a few projects that I
had moved from an XP machine and decided to troubleshoot using the following
mvn archetype:generate -DgroupId=org.sonatype.mavenbook.simple
-DartifactId=simple -Dpackage=org.sonatype -Dversion=1.0-SNAPSHOT
I've tried this with both the 32 & 64 bit versions of JDK 7u5. I tried
Maven versions 2.2.1, 3.0.3 and 3.0.4 (output below is from 3.0.4). I've
also tried it with Windows Firewall completely disabled and AV completely
removed. I'm connected via Verizon FIOS with the default router setup.
Maven works fine on the other XP machine on the same network.
Any help is greatly appreciated.
Gary
Truncated output follows (I can send complete output if necessary); note -
org.apache.maven.plugins:maven-clean-plugin:2.4.1
org.apache.maven.plugins:maven-install-plugin:2.3.1
org.apache.maven.plugins:maven-deploy-plugin:2.7
org.apache.maven.plugins:maven-site-plugin:3.0
org.apache.maven.plugins:maven-antrun-plugin:1.3
org.apache.maven.plugins:maven-assembly-plugin:2.2-beta-5
org.apache.maven.plugins:maven-dependency-plugin:2.1
org.apache.maven.plugins:maven-release-plugin:2.0
C:\workspace\ch-simple>mvn archetype:generate
-DgroupId=org.sonatype.mavenbook.simple -DartifactId=simple
-Dpackage=org.sonatype -Dversion=1.0-SNAPSHOT -e -X
Apache Maven 3.0.4 (r1232337; 2012-01-17 03:44:56-0500)
Maven home: C:\Tools\apache-maven
Java version: 1.7.0_05, vendor: Oracle Corporation
Java home: C:\Program Files (x86)\Java\jdk1.7.0_05\jre
Default locale: en_US, platform encoding: Cp1252
OS name: "windows 7", version: "6.1", arch: "x86", family: "windows"
[INFO] Error stacktraces are turned on.
[DEBUG] Reading global settings from C:\Tools\apache-maven\conf\settings.xml
[DEBUG] Reading user settings from C:\Users\Gary\.m2\settings.xml
[DEBUG] Using local repository at C:\Users\Gary\.m2\repository
[DEBUG] Using manager EnhancedLocalRepositoryManager with priority 10 for
C:\Users\Gary\.m2\repository
[INFO] Scanning for projects...
(none)
[DEBUG] Looking up lifecyle mappings for packaging pom from
ClassRealm[plexus.core, parent: null]
[DEBUG] Resolving plugin prefix archetype from [org.apache.maven.plugins,
org.codehaus.mojo]
[DEBUG] Using connector WagonRepositoryConnector with priority 0 for
http://repo.maven.apache.org/maven2
http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-clean-plu
gin/2.4.1/maven-clean-plugin-2.4.1.pom
Aug 03, 2012 8:00:44 AM
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRequestD
irector tryConnect
INFO: I/O exception (java.net.SocketException) caught when connecting to the
target host: Invalid argument: connect
Aug 03, 2012 8:00:44 AM
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRequestD
irector tryConnect
INFO: Retrying connect
Aug 03, 2012 8:00:44 AM
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRequestD
irector tryConnect
INFO: I/O exception (java.net.SocketException) caught when connecting to the
target host: Invalid argument: connect
Aug 03, 2012 8:00:44 AM
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRequestD
irector tryConnect
INFO: Retrying connect
Aug 03, 2012 8:00:44 AM
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRequestD
irector tryConnect
INFO: I/O exception (java.net.SocketException) caught when connecting to the
target host: Invalid argument: connect
Aug 03, 2012 8:00:44 AM
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRequestD
irector tryConnect
INFO: Retrying connect
[DEBUG] Writing resolution tracking file
C:\Users\Gary\.m2\repository\org\apache\maven\plugins\maven-clean-plugin\2.4
.1\maven-clean-plugin-2.4.1.pom.lastUpdated
[WARNING] Failed to retrieve plugin descriptor for
org.apache.maven.plugins:maven-clean-plugin:2.4.1: Plugin
org.apache.maven.plugins:maven-clean-plugin:2.4.1 or one of its dependencies
could not be resolved: Failed to read artifact descriptor for
org.apache.maven.plugins:maven-clean-plugin:jar:2.4.1
org.apache.maven.plugin.PluginResolutionException: Plugin
org.apache.maven.plugins:maven-clean-plugin:2.4.1 or one of its dependencies
could not be resolved: Failed to read artifact descriptor for
org.apache.maven.plugins:maven-clean-plugin:jar:2.4.1
at
org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolve(D
efaultPluginDependenciesResolver.java:129)
at
org.apache.maven.plugin.internal.DefaultMavenPluginManager.getPluginDescript
or(DefaultMavenPluginManager.java:142)
at
org.apache.maven.plugin.DefaultBuildPluginManager.loadPlugin(DefaultBuildPlu
ginManager.java:59)
at
org.apache.maven.plugin.prefix.internal.DefaultPluginPrefixResolver.resolveF
romProject(DefaultPluginPrefixResolver.java:139)
at
org.apache.maven.plugin.prefix.internal.DefaultPluginPrefixResolver.resolveF
romProject(DefaultPluginPrefixResolver.java:122)
at
org.apache.maven.plugin.prefix.internal.DefaultPluginPrefixResolver.resolve(
DefaultPluginPrefixResolver.java:86)
at
org.apache.maven.lifecycle.internal.MojoDescriptorCreator.findPluginForPrefi
x(MojoDescriptorCreator.java:262)
at
org.apache.maven.lifecycle.internal.MojoDescriptorCreator.getMojoDescriptor(
MojoDescriptorCreator.java:222)
at
org.apache.maven.lifecycle.internal.DefaultLifecycleTaskSegmentCalculator.ca
lculateTaskSegments(DefaultLifecycleTaskSegmentCalculator.java:106)
at
org.apache.maven.lifecycle.internal.DefaultLifecycleTaskSegmentCalculator.ca
lculateTaskSegments(DefaultLifecycleTaskSegmentCalculator.java:86)
at
org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarte
r.java:98)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57
)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl
.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at
org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.ja
va:290)
at
org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
at
org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.
java:409)
at
org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Failed to read artifact descriptor for
org.apache.maven.plugins:maven-clean-plugin:jar:2.4.1
at
org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom
(DefaultArtifactDescriptorReader.java:296)
at
org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArt
ifactDescriptor(DefaultArtifactDescriptorReader.java:186)
at
org.sonatype.aether.impl.internal.DefaultRepositorySystem.readArtifactDescri
ptor(DefaultRepositorySystem.java:279)
at
org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolve(D
efaultPluginDependenciesResolver.java:115)
... 23 more
Caused by: org.sonatype.aether.resolution.ArtifactResolutionException: Could
not transfer artifact org.apache.maven.plugins:maven-clean-plugin:pom:2.4.1
connect
at
org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolve(DefaultArt
ifactResolver.java:538)
at
org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolveArtifacts(D
efaultArtifactResolver.java:216)
at
org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolveArtifact(De
faultArtifactResolver.java:193)
at
org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom
(DefaultArtifactDescriptorReader.java:281)
... 26 more
Caused by: org.sonatype.aether.transfer.ArtifactTransferException: Could not
transfer artifact org.apache.maven.plugins:maven-clean-plugin:pom:2.4.1
connect
at
org.sonatype.aether.connector.wagon.WagonRepositoryConnector$4.wrap(WagonRep
ositoryConnector.java:951)
at
org.sonatype.aether.connector.wagon.WagonRepositoryConnector$4.wrap(WagonRep
ositoryConnector.java:941)
at
org.sonatype.aether.connector.wagon.WagonRepositoryConnector$GetTask.run(Wag
onRepositoryConnector.java:669)
at
org.sonatype.aether.util.concurrency.RunnableErrorForwarder$1.run(RunnableEr
rorForwarder.java:60)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:11
10)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:6
03)
at java.lang.Thread.run(Thread.java:722)
connect
at
org.apache.maven.wagon.shared.http4.AbstractHttpClientWagon.fillInputData(Ab
stractHttpClientWagon.java:799)
at
org.apache.maven.wagon.StreamWagon.getInputStream(StreamWagon.java:116)
at
org.apache.maven.wagon.StreamWagon.getIfNewer(StreamWagon.java:88)
at org.apache.maven.wagon.StreamWagon.get(StreamWagon.java:61)
at
org.sonatype.aether.connector.wagon.WagonRepositoryConnector$GetTask.run(Wag
onRepositoryConnector.java:601)
... 4 more
Caused by: java.net.SocketException: Invalid argument: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at
java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.jav
a:69)
at
java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
at
java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.ja
va:200)
at
java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:157)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391)
at java.net.Socket.connect(Socket.java:579)
at
org.apache.maven.wagon.providers.http.httpclient.conn.scheme.PlainSocketFact
ory.connectSocket(PlainSocketFactory.java:123)
at
org.apache.maven.wagon.providers.http.httpclient.impl.conn.DefaultClientConn
ectionOperator.openConnection(DefaultClientConnectionOperator.java:148)
at
org.apache.maven.wagon.providers.http.httpclient.impl.conn.AbstractPoolEntry
.open(AbstractPoolEntry.java:149)
at
org.apache.maven.wagon.providers.http.httpclient.impl.conn.AbstractPooledCon
nAdapter.open(AbstractPooledConnAdapter.java:121)
at
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRequestD
irector.tryConnect(DefaultRequestDirector.java:573)
at
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRequestD
irector.execute(DefaultRequestDirector.java:425)
at
org.apache.maven.wagon.providers.http.httpclient.impl.client.AbstractHttpCli
ent.execute(AbstractHttpClient.java:820)
at
org.apache.maven.wagon.providers.http.httpclient.impl.client.AbstractHttpCli
ent.execute(AbstractHttpClient.java:754)
at
org.apache.maven.wagon.shared.http4.AbstractHttpClientWagon.execute(Abstract
HttpClientWagon.java:674)
at
org.apache.maven.wagon.shared.http4.AbstractHttpClientWagon.fillInputData(Ab
stractHttpClientWagon.java:793)
... 8 more

Gary White

2012-08-05 00:36:15 UTC

Permalink

Markku,

Your suggestion sounded promising but unfortunately didn't resolve the
problem.

Thanks anyway.

Gary

-----Original Message-----
From: Markku Saarela [mailto:***@pp6.inet.fi]
Sent: Saturday, August 04, 2012 5:01 AM
To: ***@maven.apache.org
Subject: Re: (java.net.SocketException) caught when connecting to the target
host: Invalid argument: connect

Hi,

You probably hit IPv4 vs IPv6 incompatibility. JDK 7 uses IPv6 by default
to connect (if OS and network adapter supports it).

Try run Java with this VM argument -Djava.net.preferIPv4Stack=true or try to
set your network adapted only use IPv4 .

Markku

default router setup.

Post by Gary White
Maven works fine on the other XP machine on the same network.
Any help is greatly appreciated.
Gary
Truncated output follows (I can send complete output if necessary);
org.apache.maven.plugins:maven-clean-plugin:2.4.1
org.apache.maven.plugins:maven-install-plugin:2.3.1
org.apache.maven.plugins:maven-deploy-plugin:2.7
org.apache.maven.plugins:maven-site-plugin:3.0
org.apache.maven.plugins:maven-antrun-plugin:1.3
org.apache.maven.plugins:maven-assembly-plugin:2.2-beta-5
org.apache.maven.plugins:maven-dependency-plugin:2.1
org.apache.maven.plugins:maven-release-plugin:2.0
C:\workspace\ch-simple>mvn archetype:generate
-DgroupId=org.sonatype.mavenbook.simple -DartifactId=simple
-Dpackage=org.sonatype -Dversion=1.0-SNAPSHOT -e -X
Apache Maven 3.0.4 (r1232337; 2012-01-17 03:44:56-0500)
Maven home: C:\Tools\apache-maven
Java version: 1.7.0_05, vendor: Oracle Corporation
Java home: C:\Program Files (x86)\Java\jdk1.7.0_05\jre
Default locale: en_US, platform encoding: Cp1252
OS name: "windows 7", version: "6.1", arch: "x86", family: "windows"
[INFO] Error stacktraces are turned on.
[DEBUG] Reading global settings from
C:\Tools\apache-maven\conf\settings.xml
[DEBUG] Reading user settings from C:\Users\Gary\.m2\settings.xml
[DEBUG] Using local repository at C:\Users\Gary\.m2\repository
[DEBUG] Using manager EnhancedLocalRepositoryManager with priority 10
for C:\Users\Gary\.m2\repository
[INFO] Scanning for projects...
[DEBUG] Extension realms for project
(none)
[DEBUG] Looking up lifecyle mappings for packaging pom from
ClassRealm[plexus.core, parent: null]
[DEBUG] Resolving plugin prefix archetype from
[org.apache.maven.plugins, org.codehaus.mojo]
[DEBUG] Using connector WagonRepositoryConnector with priority 0 for
http://repo.maven.apache.org/maven2
http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-cle
an-plu gin/2.4.1/maven-clean-plugin-2.4.1.pom
Aug 03, 2012 8:00:44 AM
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRe
questD
irector tryConnect
INFO: I/O exception (java.net.SocketException) caught when connecting
to the target host: Invalid argument: connect
Aug 03, 2012 8:00:44 AM
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRe
questD
irector tryConnect
INFO: Retrying connect
Aug 03, 2012 8:00:44 AM
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRe
questD
irector tryConnect
INFO: I/O exception (java.net.SocketException) caught when connecting
to the target host: Invalid argument: connect
Aug 03, 2012 8:00:44 AM
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRe
questD
irector tryConnect
INFO: Retrying connect
Aug 03, 2012 8:00:44 AM
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRe
questD
irector tryConnect
INFO: I/O exception (java.net.SocketException) caught when connecting
to the target host: Invalid argument: connect
Aug 03, 2012 8:00:44 AM
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRe
questD
irector tryConnect
INFO: Retrying connect
[DEBUG] Writing resolution tracking file
C:\Users\Gary\.m2\repository\org\apache\maven\plugins\maven-clean-plug
in\2.4 .1\maven-clean-plugin-2.4.1.pom.lastUpdated
[WARNING] Failed to retrieve plugin descriptor for
org.apache.maven.plugins:maven-clean-plugin:2.4.1: Plugin
org.apache.maven.plugins:maven-clean-plugin:2.4.1 or one of its
dependencies could not be resolved: Failed to read artifact descriptor
for
org.apache.maven.plugins:maven-clean-plugin:jar:2.4.1
org.apache.maven.plugin.PluginResolutionException: Plugin
org.apache.maven.plugins:maven-clean-plugin:2.4.1 or one of its
dependencies could not be resolved: Failed to read artifact descriptor
for
org.apache.maven.plugins:maven-clean-plugin:jar:2.4.1
at
org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.res
olve(D
efaultPluginDependenciesResolver.java:129)
at
org.apache.maven.plugin.internal.DefaultMavenPluginManager.getPluginDe
script
or(DefaultMavenPluginManager.java:142)
at
org.apache.maven.plugin.DefaultBuildPluginManager.loadPlugin(DefaultBu
ildPlu
ginManager.java:59)
at
org.apache.maven.plugin.prefix.internal.DefaultPluginPrefixResolver.re
solveF
romProject(DefaultPluginPrefixResolver.java:139)
at
org.apache.maven.plugin.prefix.internal.DefaultPluginPrefixResolver.re
solveF
romProject(DefaultPluginPrefixResolver.java:122)
at
org.apache.maven.plugin.prefix.internal.DefaultPluginPrefixResolver.re
solve(
DefaultPluginPrefixResolver.java:86)
at
org.apache.maven.lifecycle.internal.MojoDescriptorCreator.findPluginFo
rPrefi
x(MojoDescriptorCreator.java:262)
at
org.apache.maven.lifecycle.internal.MojoDescriptorCreator.getMojoDescr
iptor(
MojoDescriptorCreator.java:222)
at
org.apache.maven.lifecycle.internal.DefaultLifecycleTaskSegmentCalcula
tor.ca
lculateTaskSegments(DefaultLifecycleTaskSegmentCalculator.java:106)
at
org.apache.maven.lifecycle.internal.DefaultLifecycleTaskSegmentCalcula
tor.ca
lculateTaskSegments(DefaultLifecycleTaskSegmentCalculator.java:86)
at
org.apache.maven.lifecycle.internal.LifecycleStarter.execute(Lifecycle
Starte
r.java:98)
at
org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
at
org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.j
ava:57
)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccess
orImpl
.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at
org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launc
her.ja
va:290)
at
org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java
:230)
at

org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.

Post by Gary White
java:409)
at
org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:3
52)
Failed to read artifact descriptor for
org.apache.maven.plugins:maven-clean-plugin:jar:2.4.1
at
org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.l
oadPom
(DefaultArtifactDescriptorReader.java:296)
at
org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.r
eadArt
ifactDescriptor(DefaultArtifactDescriptorReader.java:186)
at
org.sonatype.aether.impl.internal.DefaultRepositorySystem.readArtifact
Descri
ptor(DefaultRepositorySystem.java:279)
at
org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.res
olve(D
efaultPluginDependenciesResolver.java:115)
... 23 more
Could not transfer artifact
org.apache.maven.plugins:maven-clean-plugin:pom:2.4.1
connect
at
org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolve(Defa
ultArt
ifactResolver.java:538)
at
org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolveArtif
acts(D
efaultArtifactResolver.java:216)
at
org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolveArtif
act(De
faultArtifactResolver.java:193)
at
org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.l
oadPom
(DefaultArtifactDescriptorReader.java:281)
... 26 more
Could not transfer artifact
org.apache.maven.plugins:maven-clean-plugin:pom:2.4.1
connect
at
org.sonatype.aether.connector.wagon.WagonRepositoryConnector$4.wrap(Wa
gonRep
ositoryConnector.java:951)
at
org.sonatype.aether.connector.wagon.WagonRepositoryConnector$4.wrap(Wa
gonRep
ositoryConnector.java:941)
at
org.sonatype.aether.connector.wagon.WagonRepositoryConnector$GetTask.r
un(Wag
onRepositoryConnector.java:669)
at
org.sonatype.aether.util.concurrency.RunnableErrorForwarder$1.run(Runn
ableEr
rorForwarder.java:60)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.j
ava:11
10)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.
java:6
03)
at java.lang.Thread.run(Thread.java:722)
connect
at
org.apache.maven.wagon.shared.http4.AbstractHttpClientWagon.fillInputD
ata(Ab
stractHttpClientWagon.java:799)
at
org.apache.maven.wagon.StreamWagon.getInputStream(StreamWagon.java:116
)
at
org.apache.maven.wagon.StreamWagon.getIfNewer(StreamWagon.java:88)
at
org.apache.maven.wagon.StreamWagon.get(StreamWagon.java:61)
at
org.sonatype.aether.connector.wagon.WagonRepositoryConnector$GetTask.r
un(Wag
onRepositoryConnector.java:601)
... 4 more
Caused by: java.net.SocketException: Invalid argument: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at
java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketIm
pl.jav
a:69)
at
java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.jav
a:339)
at
java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketI
mpl.ja
va:200)
at
182)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:157)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391)
at java.net.Socket.connect(Socket.java:579)
at
org.apache.maven.wagon.providers.http.httpclient.conn.scheme.PlainSock
etFact
ory.connectSocket(PlainSocketFactory.java:123)
at
org.apache.maven.wagon.providers.http.httpclient.impl.conn.DefaultClie
ntConn
ectionOperator.openConnection(DefaultClientConnectionOperator.java:148
)
at
org.apache.maven.wagon.providers.http.httpclient.impl.conn.AbstractPoo
lEntry
.open(AbstractPoolEntry.java:149)
at
org.apache.maven.wagon.providers.http.httpclient.impl.conn.AbstractPoo
ledCon
nAdapter.open(AbstractPooledConnAdapter.java:121)
at
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRe
questD
irector.tryConnect(DefaultRequestDirector.java:573)
at
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRe
questD
irector.execute(DefaultRequestDirector.java:425)
at
org.apache.maven.wagon.providers.http.httpclient.impl.client.AbstractH
ttpCli
ent.execute(AbstractHttpClient.java:820)
at
org.apache.maven.wagon.providers.http.httpclient.impl.client.AbstractH
ttpCli
ent.execute(AbstractHttpClient.java:754)
at
org.apache.maven.wagon.shared.http4.AbstractHttpClientWagon.execute(Ab
stract
HttpClientWagon.java:674)
at
org.apache.maven.wagon.shared.http4.AbstractHttpClientWagon.fillInputD
ata(Ab
stractHttpClientWagon.java:793)
... 8 more

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Gary White

2012-08-05 00:58:37 UTC

Permalink

I spoke too soon. I disabled IPv6 on my network adapter and it didn't fix
the problem. After I sent the previous email, I decided to try the VM arg
and it did the trick. I'm curious as to why one worked and the other
didn't.

Thanks again,
Gary

-----Original Message-----
From: Gary White [mailto:***@verizon.net]
Sent: Saturday, August 04, 2012 8:36 PM
To: 'Maven Users List'
Subject: RE: (java.net.SocketException) caught when connecting to the target
host: Invalid argument: connect
Markku,

Your suggestion sounded promising but unfortunately didn't resolve the
problem.

Thanks anyway.

Gary

-----Original Message-----
From: Markku Saarela [mailto:***@pp6.inet.fi]
Sent: Saturday, August 04, 2012 5:01 AM
To: ***@maven.apache.org
Subject: Re: (java.net.SocketException) caught when connecting to the target
host: Invalid argument: connect

Hi,

You probably hit IPv4 vs IPv6 incompatibility. JDK 7 uses IPv6 by default
to connect (if OS and network adapter supports it).

Try run Java with this VM argument -Djava.net.preferIPv4Stack=true or try to
set your network adapted only use IPv4 .

Markku

default router setup.

org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.

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To unsubscribe, e-mail: users-***@maven.apache.org
For additional commands, e-mail: users-***@maven.apache.org

---------------------------------------------------------------------
To unsubscribe, e-mail: users-***@maven.apache.org
For additional commands, e-mail: users-***@maven.apache.org

Markku Saarela

2012-08-05 08:18:55 UTC

Permalink

On Windows networking if you have many network adapters like WLAN, VPN,
LAN etc. disabling one adapter migh be not enought. The you could
disable IPv6 permanently on all adapters. Here is instructions how do that:

http://www.addictivetips.com/windows-tips/how-to-disable-ipv6-in-windows-7/

Markku

Post by Gary White
I spoke too soon. I disabled IPv6 on my network adapter and it didn't fix
the problem. After I sent the previous email, I decided to try the VM arg
and it did the trick. I'm curious as to why one worked and the other
didn't.
Thanks again,
Gary
-----Original Message-----
Sent: Saturday, August 04, 2012 8:36 PM
To: 'Maven Users List'
Subject: RE: (java.net.SocketException) caught when connecting to the target
host: Invalid argument: connect
Markku,
Your suggestion sounded promising but unfortunately didn't resolve the
problem.
Thanks anyway.
Gary
-----Original Message-----
Sent: Saturday, August 04, 2012 5:01 AM
Subject: Re: (java.net.SocketException) caught when connecting to the target
host: Invalid argument: connect
Hi,
You probably hit IPv4 vs IPv6 incompatibility. JDK 7 uses IPv6 by default
to connect (if OS and network adapter supports it).
Try run Java with this VM argument -Djava.net.preferIPv4Stack=true or try to
set your network adapted only use IPv4 .
Markku

default router setup.

org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.

Post by Gary White
java:409)
at
org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:3
52)
Failed to read artifact descriptor for
org.apache.maven.plugins:maven-clean-plugin:jar:2.4.1
at
org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.l
oadPom
(DefaultArtifactDescriptorReader.java:296)
at
org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.r
eadArt
ifactDescriptor(DefaultArtifactDescriptorReader.java:186)
at
org.sonatype.aether.impl.internal.DefaultRepositorySystem.readArtifact
Descri
ptor(DefaultRepositorySystem.java:279)
at
org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.res
olve(D
efaultPluginDependenciesResolver.java:115)
... 23 more
Could not transfer artifact
org.apache.maven.plugins:maven-clean-plugin:pom:2.4.1
connect
at
org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolve(Defa
ultArt
ifactResolver.java:538)
at
org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolveArtif
acts(D
efaultArtifactResolver.java:216)
at
org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolveArtif
act(De
faultArtifactResolver.java:193)
at
org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.l
oadPom
(DefaultArtifactDescriptorReader.java:281)
... 26 more
Could not transfer artifact
org.apache.maven.plugins:maven-clean-plugin:pom:2.4.1
connect
at
org.sonatype.aether.connector.wagon.WagonRepositoryConnector$4.wrap(Wa
gonRep
ositoryConnector.java:951)
at
org.sonatype.aether.connector.wagon.WagonRepositoryConnector$4.wrap(Wa
gonRep
ositoryConnector.java:941)
at
org.sonatype.aether.connector.wagon.WagonRepositoryConnector$GetTask.r
un(Wag
onRepositoryConnector.java:669)
at
org.sonatype.aether.util.concurrency.RunnableErrorForwarder$1.run(Runn
ableEr
rorForwarder.java:60)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.j
ava:11
10)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.
java:6
03)
at java.lang.Thread.run(Thread.java:722)
Caused by: org.apache.maven.wagon.TransferFailedException: Invalid
connect
at
org.apache.maven.wagon.shared.http4.AbstractHttpClientWagon.fillInputD
ata(Ab
stractHttpClientWagon.java:799)
at
org.apache.maven.wagon.StreamWagon.getInputStream(StreamWagon.java:116
)
at
org.apache.maven.wagon.StreamWagon.getIfNewer(StreamWagon.java:88)
at
org.apache.maven.wagon.StreamWagon.get(StreamWagon.java:61)
at
org.sonatype.aether.connector.wagon.WagonRepositoryConnector$GetTask.r
un(Wag
onRepositoryConnector.java:601)
... 4 more
Caused by: java.net.SocketException: Invalid argument: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at
java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketIm
pl.jav
a:69)
at
java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.jav
a:339)
at
java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketI
mpl.ja
va:200)
at
182)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:157)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391)
at java.net.Socket.connect(Socket.java:579)
at
org.apache.maven.wagon.providers.http.httpclient.conn.scheme.PlainSock
etFact
ory.connectSocket(PlainSocketFactory.java:123)
at
org.apache.maven.wagon.providers.http.httpclient.impl.conn.DefaultClie
ntConn
ectionOperator.openConnection(DefaultClientConnectionOperator.java:148
)
at
org.apache.maven.wagon.providers.http.httpclient.impl.conn.AbstractPoo
lEntry
.open(AbstractPoolEntry.java:149)
at
org.apache.maven.wagon.providers.http.httpclient.impl.conn.AbstractPoo
ledCon
nAdapter.open(AbstractPooledConnAdapter.java:121)
at
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRe
questD
irector.tryConnect(DefaultRequestDirector.java:573)
at
org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRe
questD
irector.execute(DefaultRequestDirector.java:425)
at
org.apache.maven.wagon.providers.http.httpclient.impl.client.AbstractH
ttpCli
ent.execute(AbstractHttpClient.java:820)
at
org.apache.maven.wagon.providers.http.httpclient.impl.client.AbstractH
ttpCli
ent.execute(AbstractHttpClient.java:754)
at
org.apache.maven.wagon.shared.http4.AbstractHttpClientWagon.execute(Ab
stract
HttpClientWagon.java:674)
at
org.apache.maven.wagon.shared.http4.AbstractHttpClientWagon.fillInputD
ata(Ab
stractHttpClientWagon.java:793)
... 8 more

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

Wayne Fay

2012-08-06 13:59:38 UTC

Permalink

You would probably have to ask Oracle this question. We aren't experts on
the internal details of their JDK, just experts on Apache Maven.

Wayne