sockets - Weird java.net.SocketException Permission Denied connect error when running Groovy in Intellij IDEA

Question

When running a VERY simple URL grab script from within IntelliJ IDEA, I get:

java.net.SocketException: Permission denied: connect

but when I run it from the Groovy Console, it works just fine.

Here is the full script:

def data = new URL("http://wisc.edu").getText()

and here is the full console output from IntelliJ:

"C:Program FilesJavajdk1.7.0_01injava" "-Dtools.jar=C:Program FilesJavajdk1.7.0_01libools.jar" "-Dgroovy.home=C:Program Files (x86)GroovyGroovy-1.8.2" "-Dgroovy.starter.conf=C:Program Files (x86)GroovyGroovy-1.8.2confgroovy-starter.conf" -Didea.launcher.port=7534 "-Didea.launcher.bin.path=C:Program Files (x86)JetBrainsIntelliJ IDEA 110.492in" -Dfile.encoding=UTF-8 -classpath "C:Program Files (x86)GroovyGroovy-1.8.2libgroovy-1.8.2.jar;C:Program Files (x86)JetBrainsIntelliJ IDEA 110.492libidea_rt.jar" com.intellij.rt.execution.application.AppMain org.codehaus.groovy.tools.GroovyStarter --conf "C:Program Files (x86)GroovyGroovy-1.8.2confgroovy-starter.conf" --main groovy.ui.GroovyMain --classpath "C:Users[REDACTED]IdeaProjectsestoutproductionest;C:Program Files (x86)GroovyGroovy-1.8.2libant-1.8.2.jar;C:Program Files (x86)GroovyGroovy-1.8.2libant-antlr-1.8.2.jar;C:Program Files (x86)GroovyGroovy-1.8.2libant-junit-1.8.2.jar;C:Program Files (x86)GroovyGroovy-1.8.2libant-launcher-1.8.2.jar;C:Program Files (x86)GroovyGroovy-1.8.2libantlr-2.7.7.jar;C:Program Files (x86)GroovyGroovy-1.8.2libasm-3.2.jar;C:Program Files (x86)GroovyGroovy-1.8.2libasm-analysis-3.2.jar;C:Program Files (x86)GroovyGroovy-1.8.2libasm-commons-3.2.jar;C:Program Files (x86)GroovyGroovy-1.8.2libasm-tree-3.2.jar;C:Program Files (x86)GroovyGroovy-1.8.2libasm-util-3.2.jar;C:Program Files (x86)GroovyGroovy-1.8.2liballoontip-20090102.jar;C:Program Files (x86)GroovyGroovy-1.8.2libatik-anim-1.7.jar;C:Program Files (x86)GroovyGroovy-1.8.2libatik-awt-util-1.7.jar;C:Program Files (x86)GroovyGroovy-1.8.2libatik-bridge-1.7.jar;C:Program Files (x86)GroovyGroovy-1.8.2libatik-codec-1.7.jar;C:Program Files (x86)GroovyGroovy-1.8.2libatik-css-1.7.jar;C:Program Files (x86)GroovyGroovy-1.8.2libatik-dom-1.7.jar;C:Program Files (x86)GroovyGroovy-1.8.2libatik-ext-1.7.jar;C:Program Files (x86)GroovyGroovy-1.8.2libatik-extension-1.7.jar;C:Program Files (x86)GroovyGroovy-1.8.2libatik-gui-util-1.7.jar;C:Program Files (x86)GroovyGroovy-1.8.2libatik-gvt-1.7.jar;C:Program Files (x86)GroovyGroovy-1.8.2libatik-parser-1.7.jar;C:Program Files (x86)GroovyGroovy-1.8.2libatik-script-1.7.jar;C:Program Files (x86)GroovyGroovy-1.8.2libatik-svg-dom-1.7.jar;C:Program Files (x86)GroovyGroovy-1.8.2libatik-svggen-1.7.jar;C:Program Files (x86)GroovyGroovy-1.8.2libatik-swing-1.7.jar;C:Program Files (x86)GroovyGroovy-1.8.2libatik-transcoder-1.7.jar;C:Program Files (x86)GroovyGroovy-1.8.2libatik-util-1.7.jar;C:Program Files (x86)GroovyGroovy-1.8.2libatik-xml-1.7.jar;C:Program Files (x86)GroovyGroovy-1.8.2libsf-2.4.0.jar;C:Program Files (x86)GroovyGroovy-1.8.2libcommons-cli-1.2.jar;C:Program Files (x86)GroovyGroovy-1.8.2libcommons-logging-1.1.1.jar;C:Program Files (x86)GroovyGroovy-1.8.2libcssbuilder-0.5.jar;C:Program Files (x86)GroovyGroovy-1.8.2libcssparser-0.9.5.jar;C:Program Files (x86)GroovyGroovy-1.8.2libeasyb-0.9.8.jar;C:Program Files (x86)GroovyGroovy-1.8.2libextra166y-1.7.0.jar;C:Program Files (x86)GroovyGroovy-1.8.2libflamingo-4.1.jar;C:Program Files (x86)GroovyGroovy-1.8.2libflamingobuilder-0.4.jar;C:Program Files (x86)GroovyGroovy-1.8.2libforms-1.2.1.jar;C:Program Files (x86)GroovyGroovy-1.8.2libgant-1.9.6_groovy-1.8.1.jar;C:Program Files (x86)GroovyGroovy-1.8.2libgfxbuilder-core-0.5.jar;C:Program Files (x86)GroovyGroovy-1.8.2libgfxbuilder-svg-0.5.jar;C:Program Files (x86)GroovyGroovy-1.8.2libgfxbuilder-swingx-0.5.jar;C:Program Files (x86)GroovyGroovy-1.8.2libgmock-0.8.1.jar;C:Program Files (x86)GroovyGroovy-1.8.2libgpars-0.12.jar;C:Program Files (x86)GroovyGroovy-1.8.2libgroovy-1.8.2.jar;C:Program Files (x86)GroovyGroovy-1.8.2libgroovypp-0.9.0_1.8.2.jar;C:Program Files (x86)GroovyGroovy-1.8.2libgroovyserv-0.9.jar;C:Program Files (x86)GroovyGroovy-1.8.2libivy-2.2.0.jar;C:Program Files (x86)GroovyGroovy-1.8.2libjacob-1.14.3.jar;C:Program Files (x86)GroovyGroovy-1.8.2libjansi-1.6.jar;C:Program Files (x86)GroovyGroovy-1.8.2libjcsp-1.1-rc5.jar;C:Program Files (x86)GroovyGroovy-1.8.2libjide-oss-2.9.1.jar;C:Program Files (x86)GroovyGroovy-1.8.2libjidebuilder-4.0.jar;C:Program Files (x86)GroovyGroovy-1.8.2libjline-0.9.94.jar;C:Program Files (x86)GroovyGroovy-1.8.2libjna-3.2.2.jar;C:Program Files (x86)GroovyGroovy-1.8.2libjsilhouette-geom-0.4.jar;C:Program Files (x86)GroovyGroovy-1.8.2libjsp-api-2.0.jar;C:Program Files (x86)GroovyGroovy-1.8.2libjsr166y-1.7.0.jar;C:Program Files (x86)GroovyGroovy-1.8.2libjunit-4.8.2.jar;C:Program Files (x86)GroovyGroovy-1.8.2libl2fprod-common-all-6.9.1.jar;C:Program Files (x86)GroovyGroovy-1.8.2libmacwidgets-0.9.4.jar;C:Program Files (x86)GroovyGroovy-1.8.2libmacwidgetsbuilder-0.4.1.jar;C:Program Files (x86)GroovyGroovy-1.8.2libmaven-ant-tasks-2.1.0.jar;C:Program Files (x86)GroovyGroovy-1.8.2libmultiplegradientpaint-1.0.jar;C:Program Files (x86)GroovyGroovy-1.8.2libmultiverse-beta-0.7-RC-1.jar;C:Program Files (x86)GroovyGroovy-1.8.2lib
etty-3.1.5.GA.jar;C:Program Files (x86)GroovyGroovy-1.8.2libsac-1.3.jar;C:Program Files (x86)GroovyGroovy-1.8.2libscriptom-1.6.0.jar;C:Program Files (x86)GroovyGroovy-1.8.2libscriptom-ie-6-tlb-1.6.0.jar;C:Program Files (x86)GroovyGroovy-1.8.2libscriptom-office-2K3-tlb-1.6.0.jar;C:Program Files (x86)GroovyGroovy-1.8.2libscriptom-sapi-tlb-1.6.0.jar;C:Program Files (x86)GroovyGroovy-1.8.2libscriptom-scripting-tlb-1.6.0.jar;C:Program Files (x86)GroovyGroovy-1.8.2libscriptom-wbem-tlb-1.6.0.jar;C:Program Files (x86)GroovyGroovy-1.8.2libscriptom-wsh-tlb-1.6.0.jar;C:Program Files (x86)GroovyGroovy-1.8.2libservlet-api-2.4.jar;C:Program Files (x86)GroovyGroovy-1.8.2libspock-core-0.6-groovy-1.8-SNAPSHOT.jar;C:Program Files (x86)GroovyGroovy-1.8.2libswing-worker-1.1.jar;C:Program Files (x86)GroovyGroovy-1.8.2libswingx-beaninfo-1.6.2-2.jar;C:Program Files (x86)GroovyGroovy-1.8.2libswingx-core-1.6.2-2.jar;C:Program Files (x86)GroovyGroovy-1.8.2libswingxbuilder-0.1.8.1.jar;C:Program Files (x86)GroovyGroovy-1.8.2libswingxtrasbuilder-0.3.jar;C:Program Files (x86)GroovyGroovy-1.8.2libimingframework-1.0.jar;C:Program Files (x86)GroovyGroovy-1.8.2librident-6.2.jar;C:Program Files (x86)GroovyGroovy-1.8.2libridentbuilder-0.5.jar;C:Program Files (x86)GroovyGroovy-1.8.2libxml-apis-ext-1.3.04.jar;C:Program Files (x86)GroovyGroovy-1.8.2libxmlpull-1.1.3.1.jar;C:Program Files (x86)GroovyGroovy-1.8.2libxstream-1.4.1.jar;C:Program Files (x86)GroovyGroovy-1.8.2libxswingx-0.2.jar" --encoding=UTF-8 C:Users[REDACTED]IdeaProjectsestest.groovy
Caught: java.net.SocketException: Permission denied: connect
java.net.SocketException: Permission denied: connect
    at test.run(test.groovy:9)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)

Process finished with exit code 1

I have absolutely no idea what is causing the problem, but my guess is that it's something IDEA is doing when it runs the groovy code that keeps it from being able to access the network.

Has anyone else experienced this? Does anyone know of a workaround?

Answer 1

There is a known bug in JDK 1.7 related to IPv6.

Adding -Djava.net.preferIPv4Stack=true in VM Options should fix the problem.

See also related question on this site.