我们正在运行一个Web应用程序，它作为单个ear文件部署到JBoss 7.1.1并使用了许多ejb。我们遇到的问题是一切正常，但每天大约两次，应用程序停止接受连接。发生这种情况时，服务器日志中会显示以下信息：
14:49:00,582 ERROR [org.jboss.remoting.remote.connection] (Remoting "step" read-1) JBREM000200: Remote connection failed: java.io.IOException: Received an invalid message length of 1195986768
以下内容也出现在日志的上游：
14:33:29,042 INFO [org.jboss.as.naming] (Remoting "step" task-3) JBAS011806: Channel end notification received, closing channel Channel ID 676ac4e7 (inbound) of Remoting connection 611812ed to null
14:33:50,071 ERROR [org.jboss.as.ejb3.remote.protocol.versionone.MethodInvocationMessageHandler] (EJB default - 10) Could not write method invocation result for method due to : org.jboss.remoting3.NotOpenException: Writes closed
at org.jboss.remoting3.remote.RemoteConnectionChannel.openOutboundMessage(RemoteConnectionChannel.java:107) [jboss-remoting-3.2.3.GA.jar:3.2.3.GA]
at org.jboss.remoting3.remote.RemoteConnectionChannel.writeMessage(RemoteConnectionChannel.java:296) [jboss-remoting-3.2.3.GA.jar:3.2.3.GA]
at org.jboss.as.ejb3.remote.protocol.versionone.MethodInvocationMessageHandler.writeMethodInvocationResponse(MethodInvocationMessageHandler.java:330)
at org.jboss.as.ejb3.remote.protocol.versionone.MethodInvocationMessageHandler.access$500(MethodInvocationMessageHandler.java:64)
at org.jboss.as.ejb3.remote.protocol.versionone.MethodInvocationMessageHandler$1.run(MethodInvocationMessageHandler.java:226)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) [rt.jar:1.7.0_45]
at java.util.concurrent.FutureTask.run(FutureTask.java:262) [rt.jar:1.7.0_45]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_45]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_45]
at java.lang.Thread.run(Thread.java:744) [rt.jar:1.7.0_45]
at org.jboss.threads.JBossThread.run(JBossThread.java:122) [jboss-threads-2.0.0.GA.jar:2.0.0.GA]
当我们尝试创建ejb连接时，这是我们在客户端看到的例外
javax.naming.NamingException: Failed to create remoting connection [Root exception is java.lang.RuntimeException: Operation failed with status WAITING]
at org.jboss.naming.remote.client.ClientUtil.namingException(ClientUtil.java:36)
at org.jboss.naming.remote.client.InitialContextFactory.getInitialContext(InitialContextFactory.java:121)
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:684)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:307)
at javax.naming.InitialContext.init(InitialContext.java:242)
at javax.naming.InitialContext.<init>(InitialContext.java:216)
Caused by: java.lang.RuntimeException: Operation failed with status WAITING
at org.jboss.naming.remote.protocol.IoFutureHelper.get(IoFutureHelper.java:89)
at org.jboss.naming.remote.client.NamingStoreCache.getRemoteNamingStore(NamingStoreCache.java:56)
at org.jboss.naming.remote.client.InitialContextFactory.getOrCreateCachedNamingStore(InitialContextFactory.java:166)
at org.jboss.naming.remote.client.InitialContextFactory.getOrCreateNamingStore(InitialContextFactory.java:139)
at org.jboss.naming.remote.client.InitialContextFactory.getInitialContext(InitialContextFactory.java:104)
... 91 more
到目前为止，我们无法弄清楚导致应用程序停止接受ejb连接的原因。
我们已经能够弄清楚如果我们启动jboss并删除应用程序（或尝试连接到尚未部署应用程序的新JBoss实例），我们会得到完全相同的错误，直到字节数如果我们尝试获得ejb连接，则在“无效消息长度”错误中。
如果我们尝试使用其他协议连接到应用程序，我们也会得到类似的错误（例如，如果我们在浏览器窗口中键入http://localhost:4447，我们会看到类似的异常，但消息的长度不同） 。
支持ejb连接的代码如下所示：
public void initialize(String host, int port, String instance, String user, String password) {
this.host = host;
this.port = port;
this.user = user;
if (instance != null) {
this.instance = instance;
}
final Properties jndiProperties = new Properties();
String providerURL = "remote://" + host + ":" + port;
jndiProperties.put(Context.INITIAL_CONTEXT_FACTORY, org.jboss.naming.remote.client.InitialContextFactory.class.getName());
jndiProperties.put(Context.PROVIDER_URL, providerURL);
jndiProperties.put("jboss.naming.client.ejb.context", true);
jndiProperties.put("jboss.naming.client.connect.options.org.xnio.Options.SASL_POLICY_NOPLAINTEXT", "false");
jndiProperties.put(Context.SECURITY_PRINCIPAL, user);
jndiProperties.put(Context.SECURITY_CREDENTIALS, password);
try {
context = new InitialContext(jndiProperties);
logger.info("JNDI context initialized.");
} catch (NamingException e) {
throw new RuntimeException(e);
}
}
当我们打开JBoss管理控制台时，它表明应用程序仍然已部署并启用。
什么会导致应用程序停止接受连接并给出我们看到的错误？
非常感谢任何帮助。
提前致谢。