<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">This happens when a client closes an HTTP connection prematurely and Hunchentoot attempts to read from what is now a closed TCP socket. It can also happen if you have a flaky network connection. But neither of these explains why you’re getting more of these on AWS than before you moved there.<div><br></div><div>Where were you hosted before moving to AWS?<br><div><br></div><div><div><div>On Feb 7, 2020, at 9:20 AM, Mark Klein <<a href="mailto:m_klein@MIT.EDU">m_klein@MIT.EDU</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">
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<span style="font-variant-ligatures: no-common-ligatures" class="">> Error: on #<BASIC-CHARACTER-INPUT-STREAM UTF-8 (CHARACTER-SPECIAL/0) #x302000431CAD> : </span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class="">> Bad file descriptor during read</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class="">> While executing: #<CCL::STANDARD-KERNEL-METHOD CCL::STREAM-IO-ERROR (STREAM T T)>, in process listener(1).</span></div>
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<div class=""><span style="font-variant-ligatures: no-common-ligatures" class="">I got tons (hundreds) of these in the server log after I moved my hunchentoot-based web server to a AWS linux instance.</span></div>
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<div class=""><span style="font-variant-ligatures: no-common-ligatures" class="">Any suggestions re what it means and how I can fix it?</span></div>
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<div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> Thanks!</span></div>
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<div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"></span>Mark</span></div>
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Mark Klein, PhD<br class="">
Principal Research Scientist<br class="">
Massachusetts Institute of Technology<br class="">
<a href="http://cci.mit.edu/klein/" class="">http://cci.mit.edu/klein/</a><br class="">
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