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想想就觉得好笑，事情呢是这个样子的，我们项目采用的事Spring + websocket + stomp 实现的导检功能的项目。
需要很多设备和服务器进行交互，项目在公司和其他环境部署运行都没有任何问题，也就是说从来没遇到过websocket延迟的问题。
现场现象：因为我本人不在现场，所以我知道的所有问题的描述都是来自同事，同事说websocket连接有问题，从几秒到十几分钟都有，很不稳定，而且严重影响项目功能，我说有什么异常日志吗？下面是同事给我发来的异常信息：
2022-02-17 17:37:55.962 [XNIO-1 task-123] [] [io.undertow.request]
ERROR: UT005023: Exception handling request to /webSocketServer/847/fqxvkprb/eventsource
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.web.socket.sockjs.SockJsException: Uncaught failure in SockJS request, uri=http://22.47.208.215:80/webSocketServer/847/fqxvkprb/eventsource; nested exception is org.springframework.web.socket.sockjs.SockJsTransportFailureException: Failed to open session; nested exception is org.springframework.web.socket.sockjs.SockJsTransportFailureException: Failed to write SockJsFrame content='o'; nested exception is java.io.IOException: Broken pipe
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:497)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:584)
at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:74)
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129)
at com.github.xiaoymin.knife4j.spring.filter.ProductionSecurityFilter.doFilter(ProductionSecurityFilter.java:45)
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
at org.springblade.core.log.filter.LogTraceFilter.doFilter(LogTraceFilter.java:39)
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
at org.springblade.core.boot.request.BladeRequestFilter.doFilter(BladeRequestFilter.java:58)
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:124)
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84)
at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
at io.undertow.servlet.handlers.ServletChain$1.handleRequest(ServletChain.java:68)
at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
at io.undertow.servlet.handlers.RedirectDirHandler.handleRequest(RedirectDirHandler.java:68)
at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:111)
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.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
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:269)
at io.undertow.servlet.handlers.ServletInitialHandler.access$100(ServletInitialHandler.java:78)
at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:133)
at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:130)
at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48)
at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:249)
at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:78)
at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:99)
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:376)
at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:830)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.springframework.web.socket.sockjs.SockJsException: Uncaught failure in SockJS request, uri=http://22.47.208.215:80/webSocketServer/847/fqxvkprb/eventsource; nested exception is org.springframework.web.socket.sockjs.SockJsTransportFailureException: Failed to open session; nested exception is org.springframework.web.socket.sockjs.SockJsTransportFailureException: Failed to write SockJsFrame content='o'; nested exception is java.io.IOException: Broken pipe
at org.springframework.web.socket.sockjs.support.SockJsHttpRequestHandler.handleRequest(SockJsHttpRequestHandler.java:137)
at org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter.handle(HttpRequestHandlerAdapter.java:53)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
... 59 common frames omitted
Caused by: org.springframework.web.socket.sockjs.SockJsTransportFailureException: Failed to open session; nested exception is org.springframework.web.socket.sockjs.SockJsTransportFailureException: Failed to write SockJsFrame content='o'; nested exception is java.io.IOException: Broken pipe
at org.springframework.web.socket.sockjs.transport.session.AbstractHttpSockJsSession.handleInitialRequest(AbstractHttpSockJsSession.java:237)
at org.springframework.web.socket.sockjs.transport.handler.AbstractHttpSendingTransportHandler.handleRequestInternal(AbstractHttpSendingTransportHandler.java:76)
at org.springframework.web.socket.sockjs.transport.handler.AbstractHttpSendingTransportHandler.handleRequest(AbstractHttpSendingTransportHandler.java:66)
at org.springframework.web.socket.sockjs.transport.TransportHandlingSockJsService.handleTransportRequest(TransportHandlingSockJsService.java:316)
at org.springframework.web.socket.sockjs.support.AbstractSockJsService.handleRequest(AbstractSockJsService.java:439)
at org.springframework.web.socket.sockjs.support.SockJsHttpRequestHandler.handleRequest(SockJsHttpRequestHandler.java:134)
... 63 common frames omitted
Caused by: org.springframework.web.socket.sockjs.SockJsTransportFailureException: Failed to write SockJsFrame content='o'; nested exception is java.io.IOException: Broken pipe
at org.springframework.web.socket.sockjs.transport.session.AbstractSockJsSession.writeFrame(AbstractSockJsSession.java:343)
at org.springframework.web.socket.sockjs.transport.session.StreamingSockJsSession.handleRequestInternal(StreamingSockJsSession.java:64)
at org.springframework.web.socket.sockjs.transport.session.AbstractHttpSockJsSession.handleInitialRequest(AbstractHttpSockJsSession.java:231)
... 68 common frames omitted
Caused by: java.io.IOException: Broken pipe
at sun.nio.ch.FileDispatcherImpl.writev0(Native Method)
at sun.nio.ch.SocketDispatcher.writev(SocketDispatcher.java:51)
at sun.nio.ch.IOUtil.write(IOUtil.java:148)
at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:504)
at org.xnio.nio.NioSocketConduit.write(NioSocketConduit.java:184)
at io.undertow.server.protocol.http.HttpResponseConduit.write(HttpResponseConduit.java:655)
at io.undertow.conduits.ChunkedStreamSinkConduit.doWrite(ChunkedStreamSinkConduit.java:166)
at io.undertow.conduits.ChunkedStreamSinkConduit.write(ChunkedStreamSinkConduit.java:128)
at org.xnio.conduits.ConduitStreamSinkChannel.write(ConduitStreamSinkChannel.java:150)
at io.undertow.channels.DetachableStreamSinkChannel.write(DetachableStreamSinkChannel.java:240)
at io.undertow.server.HttpServerExchange$WriteDispatchChannel.write(HttpServerExchange.java:2107)
at io.undertow.servlet.spec.ServletOutputStreamImpl.writeBufferBlocking(ServletOutputStreamImpl.java:575)
at io.undertow.servlet.spec.ServletOutputStreamImpl.flushInternal(ServletOutputStreamImpl.java:490)
at io.undertow.servlet.spec.ServletOutputStreamImpl.flush(ServletOutputStreamImpl.java:477)
at io.undertow.servlet.spec.HttpServletResponseImpl.flushBuffer(HttpServletResponseImpl.java:516)
at javax.servlet.ServletResponseWrapper.flushBuffer(ServletResponseWrapper.java:166)
at org.springframework.http.server.ServletServerHttpResponse.flush(ServletServerHttpResponse.java:91)
at org.springframework.web.socket.sockjs.transport.session.AbstractHttpSockJsSession.writeFrameInternal(AbstractHttpSockJsSession.java:360)
at org.springframework.web.socket.sockjs.transport.session.AbstractSockJsSession.writeFrame(AbstractSockJsSession.java:326)
... 70 common frames omitted
说实话，以我的知识量，看到这样的日志，我的第一反应就是通信中断 的，我的第一反应就是网络有问题，让同事测现场的网络环境，跟我说没问题，这时候的我，就显得有点蒙B了。
然后就是各种排查问题呀，并发问题，socketJs版本问题，服务器问题，Nginx版本问题、配置文件，，，等等
最后发现以上问题都不是，哈哈，快崩溃了。
最后是在一边文章中找到了可能是InetAddress.getLocalHost()缓慢的问题，尝试了，果然有效果，所以还是很感谢大家对于技术和问题的分享。
附上原文地址：https://blog.csdn.net/qq_38345296/article/details/106478262?spm=1001.2014.3001.5502
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