我已经为 J2EE 安装了 Eclipse IDE，现在我正在尝试安装 WTP。我已经尝试了在这里和其他地方可以找到的所有解决方案。
没有代理问题，因为我可以通过内部 Web 浏览器打开存储库站点。
我尝试将“-Djava.net.preferIPv4Stack = true”添加到 eclipse.ini。
我试过清除缓存，一个不同的工作区......顺便说一句，我是一个完整的新手。以防万一我错过了一些明显的东西。
无法连接到存储库http://download.eclipse.org/releases/helios/content.xml， 是我得到的错误！
如果有任何帮助，这里是该错误的堆栈跟踪：
java.net.ConnectException: Connection timed out: connect
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at org.eclipse.ecf.provider.filetransfer.events.socket.SocketEventCreateUtil.createSocket(SocketEventCreateUtil.java:43)
at org.eclipse.ecf.internal.provider.filetransfer.httpclient.ECFHttpClientProtocolSocketFactory.createSocket(ECFHttpClientProtocolSocketFactory.java:81)
at org.eclipse.ecf.internal.provider.filetransfer.httpclient.ECFHttpClientProtocolSocketFactory.createSocket(ECFHttpClientProtocolSocketFactory.java:73)
at org.eclipse.ecf.internal.provider.filetransfer.httpclient.ECFHttpClientProtocolSocketFactory.createSocket(ECFHttpClientProtocolSocketFactory.java:65)
at org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:707)
at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$HttpConnectionAdapter.open(MultiThreadedHttpConnectionManager.java:1361)
at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:387)
at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171)
at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)
at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:346)
at org.eclipse.ecf.provider.filetransfer.httpclient.HttpClientFileSystemBrowser.runRequest(HttpClientFileSystemBrowser.java:227)
at org.eclipse.ecf.provider.filetransfer.browse.AbstractFileSystemBrowser$DirectoryJob.run(AbstractFileSystemBrowser.java:69)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)