我正在尝试在我的 android mobile 中获取 gcm 通知。我的设备已注册，我也可以取消注册，在浏览器中它显示设备已注册，但是当我单击向设备发送消息时它给了我 500 错误，我在 Apache 上运行它错误如下
java.net.ConnectException: Connection timed out: connect
java.net.PlainSocketImpl.socketConnect(Native Method)
java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
java.net.Socket.connect(Socket.java:519)
com.sun.net.ssl.internal.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:550)
com.sun.net.ssl.internal.ssl.BaseSSLSocketImpl.connect(BaseSSLSocketImpl.java:141)
sun.net.NetworkClient.doConnect(NetworkClient.java:163)
sun.net.www.http.HttpClient.openServer(HttpClient.java:394)
sun.net.www.http.HttpClient.openServer(HttpClient.java:529)
sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:271)
sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:328)
sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:172)
sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:778)
sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:158)
sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:881)
sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:230)
com.google.android.gcm.server.Sender.post(Sender.java:479)
com.google.android.gcm.server.Sender.post(Sender.java:458)
com.google.android.gcm.server.Sender.sendNoRetry(Sender.java:170)
com.google.android.gcm.server.Sender.send(Sender.java:121)
com.google.android.gcm.demo.server.SendAllMessagesServlet.doPost(SendAllMessagesServlet.java:82)
javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
请帮帮我..提前谢谢。