Error after error in openhab.log

I have heaps of errors all the same but not sure how to find out what is causing them - can anyone point me in the right direction:

2018-06-14 21:02:35.765 [ERROR] [ersey.server.ServerRuntime$Responder] - An I/O error has occurred while writing a response message entity to the container output stream.
org.glassfish.jersey.server.internal.process.MappableException: org.eclipse.jetty.io.EofException
	at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundWriteTo(MappableExceptionWrapperInterceptor.java:92) [170:org.glassfish.jersey.core.jersey-server:2.22.2]
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162) [169:org.glassfish.jersey.core.jersey-common:2.22.2]
	at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1130) [169:org.glassfish.jersey.core.jersey-common:2.22.2]
	at org.glassfish.jersey.server.ServerRuntime$Responder.writeResponse(ServerRuntime.java:711) [170:org.glassfish.jersey.core.jersey-server:2.22.2]
	at org.glassfish.jersey.server.ServerRuntime$Responder.processResponse(ServerRuntime.java:444) [170:org.glassfish.jersey.core.jersey-server:2.22.2]
	at org.glassfish.jersey.server.ServerRuntime$Responder.process(ServerRuntime.java:434) [170:org.glassfish.jersey.core.jersey-server:2.22.2]
	at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:329) [170:org.glassfish.jersey.core.jersey-server:2.22.2]
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271) [169:org.glassfish.jersey.core.jersey-common:2.22.2]
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267) [169:org.glassfish.jersey.core.jersey-common:2.22.2]
	at org.glassfish.jersey.internal.Errors.process(Errors.java:315) [169:org.glassfish.jersey.core.jersey-common:2.22.2]
	at org.glassfish.jersey.internal.Errors.process(Errors.java:297) [169:org.glassfish.jersey.core.jersey-common:2.22.2]
	at org.glassfish.jersey.internal.Errors.process(Errors.java:267) [169:org.glassfish.jersey.core.jersey-common:2.22.2]
	at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317) [169:org.glassfish.jersey.core.jersey-common:2.22.2]
	at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305) [170:org.glassfish.jersey.core.jersey-server:2.22.2]
	at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154) [170:org.glassfish.jersey.core.jersey-server:2.22.2]
	at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:473) [167:org.glassfish.jersey.containers.jersey-container-servlet-core:2.22.2]
	at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:427) [167:org.glassfish.jersey.containers.jersey-container-servlet-core:2.22.2]
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:388) [167:org.glassfish.jersey.containers.jersey-container-servlet-core:2.22.2]
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:341) [167:org.glassfish.jersey.containers.jersey-container-servlet-core:2.22.2]
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:228) [167:org.glassfish.jersey.containers.jersey-container-servlet-core:2.22.2]
	at com.eclipsesource.jaxrs.publisher.internal.ServletContainerBridge.service(ServletContainerBridge.java:76) [15:com.eclipsesource.jaxrs.publisher:5.3.1.201602281253]
	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:848) [85:org.eclipse.jetty.servlet:9.3.21.v20170918]
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:584) [85:org.eclipse.jetty.servlet:9.3.21.v20170918]
	at org.ops4j.pax.web.service.jetty.internal.HttpServiceServletHandler.doHandle(HttpServiceServletHandler.java:71) [183:org.ops4j.pax.web.pax-web-jetty:6.0.9]
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) [84:org.eclipse.jetty.server:9.3.21.v20170918]
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548) [82:org.eclipse.jetty.security:9.3.21.v20170918]
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226) [84:org.eclipse.jetty.server:9.3.21.v20170918]
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1180) [84:org.eclipse.jetty.server:9.3.21.v20170918]
	at org.ops4j.pax.web.service.jetty.internal.HttpServiceContext.doHandle(HttpServiceContext.java:284) [183:org.ops4j.pax.web.pax-web-jetty:6.0.9]
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:512) [85:org.eclipse.jetty.servlet:9.3.21.v20170918]
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185) [84:org.eclipse.jetty.server:9.3.21.v20170918]
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1112) [84:org.eclipse.jetty.server:9.3.21.v20170918]
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) [84:org.eclipse.jetty.server:9.3.21.v20170918]
	at org.ops4j.pax.web.service.jetty.internal.JettyServerHandlerCollection.handle(JettyServerHandlerCollection.java:80) [183:org.ops4j.pax.web.pax-web-jetty:6.0.9]
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134) [84:org.eclipse.jetty.server:9.3.21.v20170918]
	at org.eclipse.jetty.server.Server.handle(Server.java:534) [84:org.eclipse.jetty.server:9.3.21.v20170918]
	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:333) [84:org.eclipse.jetty.server:9.3.21.v20170918]
	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251) [84:org.eclipse.jetty.server:9.3.21.v20170918]
	at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:283) [76:org.eclipse.jetty.io:9.3.21.v20170918]
	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:108) [76:org.eclipse.jetty.io:9.3.21.v20170918]
	at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93) [76:org.eclipse.jetty.io:9.3.21.v20170918]
	at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:303) [87:org.eclipse.jetty.util:9.3.21.v20170918]
	at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148) [87:org.eclipse.jetty.util:9.3.21.v20170918]
	at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136) [87:org.eclipse.jetty.util:9.3.21.v20170918]
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671) [87:org.eclipse.jetty.util:9.3.21.v20170918]
	at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589) [87:org.eclipse.jetty.util:9.3.21.v20170918]
	at java.lang.Thread.run(Thread.java:748) [?:?]
Caused by: org.eclipse.jetty.io.EofException
	at org.eclipse.jetty.io.ChannelEndPoint.flush(ChannelEndPoint.java:199) ~[76:org.eclipse.jetty.io:9.3.21.v20170918]
	at org.eclipse.jetty.io.WriteFlusher.flush(WriteFlusher.java:420) ~[76:org.eclipse.jetty.io:9.3.21.v20170918]
	at org.eclipse.jetty.io.WriteFlusher.write(WriteFlusher.java:313) ~[76:org.eclipse.jetty.io:9.3.21.v20170918]
	at org.eclipse.jetty.io.AbstractEndPoint.write(AbstractEndPoint.java:147) ~[76:org.eclipse.jetty.io:9.3.21.v20170918]
	at org.eclipse.jetty.server.HttpConnection$SendCallback.process(HttpConnection.java:731) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
	at org.eclipse.jetty.util.IteratingCallback.processing(IteratingCallback.java:241) ~[87:org.eclipse.jetty.util:9.3.21.v20170918]
	at org.eclipse.jetty.util.IteratingCallback.iterate(IteratingCallback.java:224) ~[87:org.eclipse.jetty.util:9.3.21.v20170918]
	at org.eclipse.jetty.server.HttpConnection.send(HttpConnection.java:519) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
	at org.eclipse.jetty.server.HttpChannel.sendResponse(HttpChannel.java:745) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
	at org.eclipse.jetty.server.HttpChannel.write(HttpChannel.java:801) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
	at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:235) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
	at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:219) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
	at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:496) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
	at java.io.OutputStream.write(OutputStream.java:75) ~[?:?]
	at org.glassfish.jersey.servlet.internal.ResponseWriter$NonCloseableOutputStreamWrapper.write(ResponseWriter.java:320) ~[?:?]
	at org.glassfish.jersey.message.internal.CommittingOutputStream.write(CommittingOutputStream.java:218) ~[?:?]
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$UnCloseableOutputStream.write(WriterInterceptorExecutor.java:294) ~[?:?]
	at org.eclipse.smarthome.io.rest.core.internal.GsonProvider.writeTo(GsonProvider.java:71) ~[?:?]
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.invokeWriteTo(WriterInterceptorExecutor.java:265) ~[?:?]
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:250) ~[?:?]
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162) ~[?:?]
	at org.glassfish.jersey.server.internal.JsonWithPaddingInterceptor.aroundWriteTo(JsonWithPaddingInterceptor.java:106) ~[?:?]
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162) ~[?:?]
	at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundWriteTo(MappableExceptionWrapperInterceptor.java:86) ~[?:?]
	... 46 more
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.eclipse.jetty.io.ChannelEndPoint.flush(ChannelEndPoint.java:179) ~[76:org.eclipse.jetty.io:9.3.21.v20170918]
	at org.eclipse.jetty.io.WriteFlusher.flush(WriteFlusher.java:420) ~[76:org.eclipse.jetty.io:9.3.21.v20170918]
	at org.eclipse.jetty.io.WriteFlusher.write(WriteFlusher.java:313) ~[76:org.eclipse.jetty.io:9.3.21.v20170918]
	at org.eclipse.jetty.io.AbstractEndPoint.write(AbstractEndPoint.java:147) ~[76:org.eclipse.jetty.io:9.3.21.v20170918]
	at org.eclipse.jetty.server.HttpConnection$SendCallback.process(HttpConnection.java:731) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
	at org.eclipse.jetty.util.IteratingCallback.processing(IteratingCallback.java:241) ~[87:org.eclipse.jetty.util:9.3.21.v20170918]
	at org.eclipse.jetty.util.IteratingCallback.iterate(IteratingCallback.java:224) ~[87:org.eclipse.jetty.util:9.3.21.v20170918]
	at org.eclipse.jetty.server.HttpConnection.send(HttpConnection.java:519) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
	at org.eclipse.jetty.server.HttpChannel.sendResponse(HttpChannel.java:745) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
	at org.eclipse.jetty.server.HttpChannel.write(HttpChannel.java:801) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
	at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:235) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
	at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:219) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
	at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:496) ~[84:org.eclipse.jetty.server:9.3.21.v20170918]
	at java.io.OutputStream.write(OutputStream.java:75) ~[?:?]
	at org.glassfish.jersey.servlet.internal.ResponseWriter$NonCloseableOutputStreamWrapper.write(ResponseWriter.java:320) ~[?:?]
	at org.glassfish.jersey.message.internal.CommittingOutputStream.write(CommittingOutputStream.java:218) ~[?:?]
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$UnCloseableOutputStream.write(WriterInterceptorExecutor.java:294) ~[?:?]
	at org.eclipse.smarthome.io.rest.core.internal.GsonProvider.writeTo(GsonProvider.java:71) ~[?:?]
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.invokeWriteTo(WriterInterceptorExecutor.java:265) ~[?:?]
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:250) ~[?:?]
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162) ~[?:?]
	at org.glassfish.jersey.server.internal.JsonWithPaddingInterceptor.aroundWriteTo(JsonWithPaddingInterceptor.java:106) ~[?:?]
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162) ~[?:?]
	at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundWriteTo(MappableExceptionWrapperInterceptor.java:86) ~[?:?]
	... 46 more

it could be anything…

what bindings are you using? on which OH2 version?

when does this error occur?

jetty + I/O error = could be something related to a timeout / network connectivity issue with a remote (http) client

see also:

  1. An I/O error has occurred while writing a response message entity to the container output stream
  2. https://github.com/openhab/openhab-distro/issues/587

Thanks, using OH2 stable. I think it was some HTTP items - I went through and checked them all, and the binding and lined everything up and the errors have gone.

It would be great to know how to trouble shoot these “generic” errors though - would it show more info if I went into DEBUG mode?