Connection refused: **ERROR** [forge install-plugin] Connection to ... behind a proxy

Hi,

I am getting this error when using forge behind a proxy. I tried FORGE-421 Proxy support, but with no success.
[seam3-test] seam3-test $ forge install-plugin arquillian
Connecting to remote repository https://raw.github.com/forge/plugin-repository/master/repository.yaml... **ERROR** [forge install-plugin] Connection to https://raw.github.com refused
org.jboss.forge.shell.exceptions.CommandExecutionException: Connection to https://raw.github.com refused
at org.jboss.forge.shell.command.Execution.perform(Execution.java:153)
at org.jboss.forge.shell.command.fshparser.FSHRuntime.run(FSHRuntime.java:125)
at org.jboss.forge.shell.command.fshparser.FSHRuntime.run(FSHRuntime.java:63)
at org.jboss.forge.shell.ShellImpl$ExecutorThread.run(ShellImpl.java:829)
at org.jboss.forge.shell.ShellImpl.execute(ShellImpl.java:852)
at org.jboss.forge.shell.ShellImpl.doShell(ShellImpl.java:642)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.jboss.weld.bean.proxy.AbstractBeanInstance.invoke(AbstractBeanInstance.java:48)
at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:125)
at org.jboss.forge.shell.ShellImpl$Proxy$$$_WeldClientProxy.doShell(ShellImpl$Proxy$$$_WeldClientProxy.java)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.jboss.weld.util.reflection.SecureReflections$13.work(SecureReflections.java:305)
at org.jboss.weld.util.reflection.SecureReflectionAccess.run(SecureReflectionAccess.java:54)
at org.jboss.weld.util.reflection.SecureReflectionAccess.runAsInvocation(SecureReflectionAccess.java:163)
at org.jboss.weld.util.reflection.SecureReflections.invoke(SecureReflections.java:299)
at org.jboss.weld.introspector.jlr.WeldMethodImpl.invokeOnInstance(WeldMethodImpl.java:188)
at org.jboss.weld.introspector.ForwardingWeldMethod.invokeOnInstance(ForwardingWeldMethod.java:59)
at org.jboss.weld.injection.MethodInjectionPoint.invokeOnInstanceWithSpecialValue(MethodInjectionPoint.java:198)
at org.jboss.weld.event.ObserverMethodImpl.sendEvent(ObserverMethodImpl.java:282)
at org.jboss.weld.event.ObserverMethodImpl.sendEvent(ObserverMethodImpl.java:265)
at org.jboss.weld.event.ObserverMethodImpl.notify(ObserverMethodImpl.java:234)
at org.jboss.weld.manager.BeanManagerImpl.notifyObservers(BeanManagerImpl.java:635)
at org.jboss.weld.manager.BeanManagerImpl.fireEvent(BeanManagerImpl.java:622)
at org.jboss.weld.manager.BeanManagerImpl.fireEvent(BeanManagerImpl.java:616)
at org.jboss.forge.shell.Bootstrap$1.run(Bootstrap.java:139)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.jboss.forge.shell.command.Execution.perform(Execution.java:149)
... 31 more
Caused by: org.apache.http.conn.HttpHostConnectException: Connection to https://raw.github.com refused
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:127)
at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:147)
at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:108)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:415)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:641)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:576)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:554)
at org.jboss.forge.shell.util.PluginUtil.findPlugin(PluginUtil.java:88)
at org.jboss.forge.shell.plugins.builtin.ForgePlugin.installFromIndex(ForgePlugin.java:236)
... 36 more
Caused by: java.net.ConnectException: Connection timed out: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(Unknown Source)
at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.connect(Unknown Source)
at org.apache.http.conn.ssl.SSLSocketFactory.connectSocket(SSLSocketFactory.java:333)
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:123)
... 44 more

Thanks in advance