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PODWR call throws "Failed to read input" in IE8, appearing too frequent
 

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  1. PODWR call throws "Failed to read input" in IE8, appearing too frequent
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    <p>This issue occurs in <code>IE8</code> only, On browser it throws <code>http 502 error</code> ,while in <code>apache</code> it throws <code>http 103</code> &amp; my application breaks due to this error </p> <p>After adding sysout in <code>dwr jar</code> i got the following logs:</p> <pre><code> DWR Exception in ParsePost Data Failed to read input java.io.IOException: Underlying input stream returned zero bytes at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:268) at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:306) at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:158) at java.io.InputStreamReader.read(InputStreamReader.java:167) at java.io.BufferedReader.fill(BufferedReader.java:136) at java.io.BufferedReader.readLine(BufferedReader.java:299) at java.io.BufferedReader.readLine(BufferedReader.java:362) at org.directwebremoting.dwrp.ParseUtil.parsePost(ParseUtil.java:65) at org.directwebremoting.dwrp.Batch.&lt;init&gt;(Batch.java:58) at org.directwebremoting.dwrp.BaseCallMarshaller.marshallInbound(BaseCallMarshaller.java:76) at org.directwebremoting.servlet.PlainCallHandler.handle(PlainCallHandler.java:42) at org.directwebremoting.servlet.UrlProcessor.handle(UrlProcessor.java:101) at org.directwebremoting.servlet.DwrServlet.doPost(DwrServlet.java:146) at javax.servlet.http.HttpServlet.service(HttpServlet.java:641) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at com.zycus.icontract.common.IContractSessionValidationOpenXavaFilter.doFilter(IContractSessionValidationOpenXavaFilter.java:66) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:200) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:539) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:298) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:662) DWR Excpetion in MarshallInbound org.directwebremoting.extend.ServerException: Failed to read input at org.directwebremoting.dwrp.ParseUtil.parsePost(ParseUtil.java:110) at org.directwebremoting.dwrp.Batch.&lt;init&gt;(Batch.java:58) at org.directwebremoting.dwrp.BaseCallMarshaller.marshallInbound(BaseCallMarshaller.java:76) at org.directwebremoting.servlet.PlainCallHandler.handle(PlainCallHandler.java:42) at org.directwebremoting.servlet.UrlProcessor.handle(UrlProcessor.java:101) at org.directwebremoting.servlet.DwrServlet.doPost(DwrServlet.java:146) at javax.servlet.http.HttpServlet.service(HttpServlet.java:641) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at com.zycus.icontract.common.IContractSessionValidationOpenXavaFilter.doFilter(IContractSessionValidationOpenXavaFilter.java:66) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:200) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:539) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:298) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:662) Caused by: java.io.IOException: Underlying input stream returned zero bytes at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:268) at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:306) at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:158) at java.io.InputStreamReader.read(InputStreamReader.java:167) at java.io.BufferedReader.fill(BufferedReader.java:136) at java.io.BufferedReader.readLine(BufferedReader.java:299) at java.io.BufferedReader.readLine(BufferedReader.java:362) at org.directwebremoting.dwrp.ParseUtil.parsePost(ParseUtil.java:65) ... 25 more Inside marshallException Exiting from marshallException Returning from PlainCallHandler </code></pre> <p>I found few solution for the above issue :</p> <p>1)Increase <code>keepAliveTimout</code> in apache </p> <p>2)Change the way of reading input in <code>ParseUtil</code> class of <code>dwr jar</code> from </p> <pre><code>BufferedReader in = new BufferedReader(new InputStreamReader(req.getInputStream())); </code></pre> <p>to </p> <pre><code>BufferedReader in = req.getReader(); </code></pre> <p>But issue is still reproducible in <code>IE8</code></p> <p>I also tried to give alert message <code>"Internal Server Error. Please Try Again"</code> when this exception occur but alert is not coming. I have done changes in <code>dwr-engine.js</code> for showing alert message</p>
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    1. COwhen does this exception comes.. what are u actually trying to actually achieve out of this.. plz elaborate ur issue
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      1. PODWR call throws "Failed to read input" in IE8, appearing too frequent
      1. USGarry
    2. COThis issue occurs when continuously making dwr calls in IE8
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      1. PODWR call throws "Failed to read input" in IE8, appearing too frequent
      1. USJitendra Nandre
    3. CO`http://www.coderanch.com/t/610812/Performance/java/DWR-call-throws-Failed-read#2790330`
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