ClientAbortException：java.net.SocketException：jboss 服务器上间歇性地出现连接重置错误

Question

我的 Web 应用程序连接到 API 以从数据库中获取数据。通过浏览器访问页面有时会正确加载数据，但有时会引发连接重置异常。这会间歇性发生。

大多数情况下首次加载不起作用，但刷新/重新加载页面可以暂时解决问题。

我的网页 (UI) 部署在 Jboss server 6.4 上。在我的前端 Web 应用程序和后端 API 之间有一个中间负载均衡器。

Web 应用程序的 Jboss 日志 -

ClientAbortException:  java.net.SocketException: Connection reset
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:429)
at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:450)
at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:368)
at org.apache.catalina.connector.OutputBuffer.flush(OutputBuffer.java:342)
at org.apache.catalina.connector.CoyoteOutputStream.flush(CoyoteOutputStream.java:99)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:141)
at java.io.FilterOutputStream.close(FilterOutputStream.java:158)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:734)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:295)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176)
at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)
at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92)
at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:231)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:149)
at org.jboss.as.web.security.SubjectInfoSetupValve.invoke(SubjectInfoSetupValve.java:34)
at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:169)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:151)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:97)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:102)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:656)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:926)
at java.lang.Thread.run(Thread.java:748)
Suppressed: ClientAbortException:  java.net.SocketException: Broken pipe (Write failed)
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:429)
at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:450)
at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:368)
at org.apache.catalina.connector.OutputBuffer.close(OutputBuffer.java:324)
at org.apache.catalina.connector.CoyoteOutputStream.close(CoyoteOutputStream.java:106)
at java.io.FilterOutputStream.close(FilterOutputStream.java:159)
... 25 more

调用 API 的一段代码 -

private String invokeGetTLS(String apiHost, HttpServletResponse response) throws IOException {
        System.out.println("Inside invokeGetTLS");
        URL apiURL = null;
        Map<String, List<String>> respHeaders = null;
        HttpsURLConnection apiURLConnection = null;
        try {
            apiURL = new URL(apiHost);
            apiURLConnection = (HttpsURLConnection) apiURL.openConnection();
            apiURLConnection.setDoInput(true);
            respHeaders = apiURLConnection.getHeaderFields();
            addResponseHeaders(respHeaders, response);
        } catch (IOException e) {
            System.out.println("Exception in invokeGetTLS  " + e.getMessage());
            e.printStackTrace();
            return e.getMessage();
        }
        try (BufferedInputStream inputBuffStream = new BufferedInputStream(apiURLConnection.getInputStream());
                BufferedOutputStream outBuffStream = new BufferedOutputStream(response.getOutputStream())) {
            int i;
            while ((i = ((InputStream) inputBuffStream).read()) >= 0) {
                outBuffStream.write(i);
            }
        } catch (IOException e) {
            System.out.println("Exception in invokeGetTLS  " + e.getMessage());
            e.printStackTrace();
            return e.getMessage();
        }
        System.out.println("Leaving invokeGetTLS");
        return null;
    }

我们正在使用 Nginx 网络服务器。流程是这样的 - Nginx->serve/UI ->Load Balancer -> Api 。我在 Nginx 上看到以下错误 -

2019/09/19 11:32:32 [info] 12553#12553: *6 epoll_wait() reported that client prematurely closed connection, so upstream connection is closed too while reading response header from upstream

Answer 1

ClientAbortException:  java.net.SocketException: Broken pipe

这意味着客户端关闭了连接。如果您有一个负载均衡器作为您描述的客户端，那么负载均衡器过早地关闭了连接。调整负载平衡器超时。