title: javax.net.ssl.SSLProtocolException: Connection timed out (Read failed)
body: <p>My <code>Spring Boot</code> based service are facing <code>javax.net.ssl.SSLProtocolException: Connection timed out (Read failed)</code> occasionally when <code>Apache Http Client</code> calling for resources on other servers that are not in control of mine. Every time the abnormal process goes like this:</p>
  
  <ul>
  <li>Application issue a get/post request to the server like at 2019-12-19 09:58:16.253</li>
  <li>Waiting for almost 15 minutes</li>
  <li>Request thread broke out with <code>javax.net.ssl.SSLProtocolException Connection timed out (Read failed)</code> at 2019-12-19 10:14:31.309</li>
  </ul>
  
  <p>The stacktrace:</p>
  
  <pre><code>javax.net.ssl.SSLProtocolException: Connection timed out (Read failed)
      at java.base/sun.security.ssl.Alert.createSSLException(Alert.java:126)
      at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:321)
      at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:264)
      at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:259)
      at java.base/sun.security.ssl.SSLSocketImpl.handleException(SSLSocketImpl.java:1314)
      at java.base/sun.security.ssl.SSLSocketImpl$AppInputStream.read(SSLSocketImpl.java:839)
      at org.apache.http.impl.io.SessionInputBufferImpl.streamRead(SessionInputBufferImpl.java:137)
      at org.apache.http.impl.io.SessionInputBufferImpl.fillBuffer(SessionInputBufferImpl.java:153)
      at org.apache.http.impl.io.SessionInputBufferImpl.readLine(SessionInputBufferImpl.java:282)
      at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:138)
      at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:56)
      at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:259)
      at org.apache.http.impl.DefaultBHttpClientConnection.receiveResponseHeader(DefaultBHttpClientConnection.java:163)
      at org.apache.http.impl.conn.CPoolProxy.receiveResponseHeader(CPoolProxy.java:165)
      at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:273)
      at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:125)
      at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:272)
      at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:185)
      at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)
      at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
      at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
      at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:108)
      at com.xx
      at com.xx
      at com.xx
      at jdk.internal.reflect.GeneratedMethodAccessor255.invoke(Unknown Source)
      at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.base/java.lang.reflect.Method.invoke(Method.java:566)
      at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189)
      at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)
      at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102)
      at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895)
      at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800)
      at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
      at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038)
      at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942)
      at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005)
      at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
      at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
      at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
      at com.tehang.resource.train.infrastructure.fitlers.ResponseContainerFilter.doFilter(ResponseContainerFilter.java:74)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
      at org.springframework.boot.actuate.web.trace.servlet.HttpTraceFilter.doFilterInternal(HttpTraceFilter.java:90)
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
      at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
      at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92)
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
      at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93)
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
      at org.springframework.cloud.sleuth.instrument.web.ExceptionLoggingFilter.doFilter(ExceptionLoggingFilter.java:50)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
      at brave.servlet.TracingFilter.doFilter(TracingFilter.java:86)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
      at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.filterAndRecordMetrics(WebMvcMetricsFilter.java:117)
      at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:106)
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
      at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
      at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
      at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
      at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
      at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
      at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
      at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
      at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
      at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
      at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
      at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:834)
      at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1417)
      at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
      at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
      at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
      at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
      at java.base/java.lang.Thread.run(Thread.java:834)
  Caused by: java.net.SocketException: Connection timed out (Read failed)
      at java.base/java.net.SocketInputStream.socketRead0(Native Method)
      at java.base/java.net.SocketInputStream.socketRead(SocketInputStream.java:115)
      at java.base/java.net.SocketInputStream.read(SocketInputStream.java:168)
      at java.base/java.net.SocketInputStream.read(SocketInputStream.java:140)
      at java.base/sun.security.ssl.SSLSocketInputRecord.read(SSLSocketInputRecord.java:448)
      at java.base/sun.security.ssl.SSLSocketInputRecord.bytesInCompletePacket(SSLSocketInputRecord.java:68)
      at java.base/sun.security.ssl.SSLSocketImpl.readApplicationRecord(SSLSocketImpl.java:1104)
      at java.base/sun.security.ssl.SSLSocketImpl$AppInputStream.read(SSLSocketImpl.java:823)
      ... 90 common frames omitted
  </code></pre>
  
  <p>The http utils</p>
  
  <pre><code>  compile('org.apache.httpcomponents:httpclient:4.5.6')
  </code></pre>
  
  <p>How does the exception happen? Is the problem on the spring boot application or the server side?</p>