[GREENFOOT-189] exception thrown when exporting without an internet connection

If you open the Export dialog and choose Publish and you are not connected to the internet, the following exception is thrown in the Greenfoot terminal. {noformat} java.net.UnknownHostException: greenfootgallery.org at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:177) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366) at java.net.Socket.connect(Socket.java:519) at java.net.Socket.connect(Socket.java:469) at java.net.Socket.(Socket.java:366) at java.net.Socket.(Socket.java:240) at org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:80) at org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:122) at org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:707) at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:387) at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171) at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397) at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:323) at greenfoot.export.mygame.MyGameClient.getCommonTags(MyGameClient.java:321) at greenfoot.gui.export.ExportPublishPane$6.construct(ExportPublishPane.java:628) at bluej.utility.SwingWorker$2.run(SwingWorker.java:108) at java.lang.Thread.run(Thread.java:619)

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Issue metadata

• Issue type: Bug
• Priority: Low
• Fix versions: 2.0