io.undertow.request 远程对等关闭连接，然后才能读取所有数据

Question

我在wildfly 10上运行ejb项目，遇到了这个错误信息，

UT000128: Remote peer closed connection before all data could be read

上面的信息有什么值得关注的吗？

网络上没有太多信息。以下是一些参考资料：

• io.undertow (http://undertow.io/)
• 蔚来 (https://en.wikipedia.org/wiki/Non-blocking_I/O_(Java))
• API (https://access.redhat.com/webassets/avalon/d/red-hat-jboss-enterprise-application-platform/7.0.0/javadocs/io/undertow/UndertowMessages.html)。

下面是堆栈跟踪，

15:45:11,650 ERROR [io.undertow.request] (default task-29) UT005023: Exception handling request to /OV3WEB/block/receive-updated-views: java.lang.RuntimeException: java.io.IOException: UT000128: Remote peer closed connection before all data could be read
    at io.undertow.servlet.spec.HttpServletRequestImpl.parseFormData(HttpServletRequestImpl.java:764)
    at io.undertow.servlet.spec.HttpServletRequestImpl.getParameter(HttpServletRequestImpl.java:636)
    at com.icesoft.faces.webapp.http.servlet.ServletRequestResponse.containsParameter(ServletRequestResponse.java:118)
    at com.icesoft.faces.webapp.http.core.RequestVerifier.service(RequestVerifier.java:29)
    at com.icesoft.faces.webapp.http.servlet.ThreadBlockingAdaptingServlet.service(ThreadBlockingAdaptingServlet.java:25)
    at com.icesoft.faces.webapp.http.servlet.EnvironmentAdaptingServlet.service(EnvironmentAdaptingServlet.java:63)
    at com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:23)
    at com.icesoft.faces.webapp.http.servlet.SessionDispatcher.service(SessionDispatcher.java:53)
    at com.icesoft.faces.webapp.http.servlet.SessionVerifier.service(SessionVerifier.java:26)
    at com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:23)
    at com.icesoft.faces.webapp.http.servlet.MainServlet.service(MainServlet.java:131)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
    at com.icesoft.faces.webapp.xmlhttp.BlockingServlet.service(BlockingServlet.java:56)
    at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85)
    at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
    at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
    at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
    at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)
    at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
    at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
    at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
    at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)
    at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
    at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
    at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
    at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
    at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:284)
    at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:263)
    at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)
    at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:174)
    at io.undertow.server.Connectors.executeRootHandler(Connectors.java:202)
    at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:793)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.io.IOException: UT000128: Remote peer closed connection before all data could be read
    at io.undertow.conduits.FixedLengthStreamSourceConduit.exitRead(FixedLengthStreamSourceConduit.java:338)
    at io.undertow.conduits.FixedLengthStreamSourceConduit.read(FixedLengthStreamSourceConduit.java:255)
    at org.xnio.conduits.ConduitStreamSourceChannel.read(ConduitStreamSourceChannel.java:127)
    at io.undertow.channels.DetachableStreamSourceChannel.read(DetachableStreamSourceChannel.java:209)
    at io.undertow.server.HttpServerExchange$ReadDispatchChannel.read(HttpServerExchange.java:2231)
    at io.undertow.server.handlers.form.FormEncodedDataDefinition$FormEncodedDataParser.doParse(FormEncodedDataDefinition.java:133)
    at io.undertow.server.handlers.form.FormEncodedDataDefinition$FormEncodedDataParser.parseBlocking(FormEncodedDataDefinition.java:251)
    at io.undertow.servlet.spec.HttpServletRequestImpl.parseFormData(HttpServletRequestImpl.java:762)
    ... 39 more

编辑：2016 年 11 月 14 日

关于 /{app}/block/send-receive-updates 或 /{app}/block/receive-updated-views，这些是ICEfaces 组件中的心跳监控机制，用于维护 Web 服务器和客户端浏览器之间的连接。

根据我对消息来源的理解：

• http://www.icesoft.org/JForum/posts/list/5605.page;jsessionid=2785F9DB2C6A32F92AD3A05BF2F3F726#24788
• http://res.icesoft.org/docs/latest/htmlguide/devguide/AdvancedTopics6.html

Answer 1

当您的服务器失去与客户端的套接字连接时，可能会发生此错误，主要是由于超时或强制关闭任一端的连接。

Answer 2

当我的应用程序在执行某些重试机制后想要读取请求正文时，我得到了相同的错误代码 (UT000128)。它将消耗有效负载，因此我无法再次读取它们，Untertow 返回 UT000128。

我的解决方案是使用包装器在重试机制中复制请求正文。如果您遇到相同的情况，我希望这会有所帮助。