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https://issues.apache.org/jira/browse/AXIS2-6091?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17941984#comment-17941984
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Jeff Thomas commented on AXIS2-6091:
------------------------------------
Created [https://github.com/apache/axis-axis2-java-core/pull/902]
Made some "improvements" to above code suggestions.
> Problem handling HTTP Response in OutInAxisOperationClient / TransportUtils
> ---------------------------------------------------------------------------
>
> Key: AXIS2-6091
> URL: https://issues.apache.org/jira/browse/AXIS2-6091
> Project: Axis2
> Issue Type: Bug
> Components: kernel
> Affects Versions: 2.0.0
> Reporter: Jeff Thomas
> Priority: Major
>
> I am testing upgrading to Axis2 2.0.0 (and associated Axiom 2.0.0 upgrade).
> I am seeing a processing error when a HTTP 404 is received by an
> OutInAxisOperationClient when an endpoint is not available (target
> application not running) but the Tomcat instance is running.
> The returned response obtained from the input-stream is:
>
> {code:java}
> <!doctype html>
> <html lang="en">
> <head>
> <title>HTTP Status 404 – Not Found</title>
> <style type="text/css">body {font-family:Tahoma,Arial,sans-serif;}
> h1, h2, h3, b {color:white;background-color:#525D76;} h1 {font-size:22px;} h2
> {font-size:16px;} h3 {font-size:14px;} p {font-size:12px;} a {color:black;}
> .line {height:1px;background-color:#525D76;border:none;}</style>
> </head>
> <body>
> <h1>HTTP Status 404 – Not Found</h1>
> <hr class="line"/>
> <p>
> <b>Type</b> Status Report</p>
> <p>
> <b>Description</b> The origin server did not find a current
> representation for the target resource or is not willing to disclose that one
> exists.</p>
> <hr class="line"/>
> <h3>Apache Tomcat/11.0.5</h3>
> </body>
> </html> {code}
> The stacktrace for the fault is as follows:
>
>
> {code:java}
> org.apache.axis2.AxisFault: org.apache.axiom.core.stream.StreamException:
> com.ctc.wstx.exc.WstxUnexpectedCharException: Unexpected character 'd' (code
> 100) after '<!' (malformed comment?)
> at [row,col {unknown-source}]: [1,3]
> at org.apache.axis2.AxisFault.makeFault(AxisFault.java:431)
> ~[axis2-kernel-2.0.0.2-PWC.jar:2.0.0.2-PWC]
> at
> org.apache.axis2.kernel.TransportUtils.createSOAPMessage(TransportUtils.java:116)
> ~[axis2-kernel-2.0.0.2-PWC.jar:2.0.0.2-PWC]
> at
> org.apache.axis2.kernel.TransportUtils.createSOAPMessage(TransportUtils.java:68)
> ~[axis2-kernel-2.0.0.2-PWC.jar:2.0.0.2-PWC]
> at
> org.apache.axis2.description.OutInAxisOperationClient.handleResponse(OutInAxisOperation.java:347)
> ~[axis2-kernel-2.0.0.2-PWC.jar:2.0.0.2-PWC]
> {code}
> Ultimately it lands in this chain:
>
> * OutInAxisOperationClient#processResponse ->
> * TransportUtils#createSoapMessage ->
> * ...
> * TransportUtils#createDefaultDocumentElement
> It lands here because it cannot find any configured MessageBuilder for the
> content-type "text/html".
> Here it comes in this code:
>
> {code:java}
> private static OMElement createDefaultDocumentElement(MessageContext
> msgContext,
> InputStream inStream,
> String type) {
> OMElement documentElement;
> if (msgContext.isDoingREST()) {
> if (log.isDebugEnabled()) {
> log.debug("Could not find a Builder for type (" + type + ").
> Using REST.");
> }
> OMXMLParserWrapper builder = BuilderUtil.createPOXBuilder(inStream,
> null);
> documentElement = builder.getDocumentElement();
> } else {
> // FIXME making soap defualt for the moment..might effect the
> // performance
> if (log.isDebugEnabled()) {
> log.debug("Could not find a Builder for type (" + type + ").
> Using SOAP.");
> }
> String charSetEnc = (String) msgContext
> .getProperty(Constants.Configuration.CHARACTER_SET_ENCODING);
> SOAPModelBuilder builder =
> BuilderUtil.createSOAPModelBuilder(inStream, charSetEnc);
> documentElement = builder.getDocumentElement();
> }
> return documentElement;
> } {code}
>
> The '{{{}isDoingRest{}}}' returns _false_ and the {{contentType}} is
> 'text/html' and encoding 'UTF-8'.
> The exception is thrown trying to parse the HTML to SOAP:
> {code:java}
> documentElement = builder.getDocumentElement(); {code}
> Possibly this is also related to the code in {{HTTPSender#send}} for handling
> 404/500 HTTP responses?
>
>
> {code:java}
> else if (statusCode == HttpStatus.SC_INTERNAL_SERVER_ERROR
> || statusCode == HttpStatus.SC_BAD_REQUEST ||
> statusCode == HttpStatus.SC_NOT_FOUND) {
> processResponse = true;
> fault = true;
> }{code}
> We would really like to get off our custom forks of Axis2/Axiom/Rampart - or
> at least as close to the current release as possible but this is currently a
> blocker for us. Our monitoring continuously polls endpoints that may or may
> not be available and this generates loads of errors / stacktraces in our logs.
>
> I enabled the following parameter as a test to use the "UnknownBuilder"
>
> {code:java}
> <parameter name="useDefaultFallbackBuilder">true</parameter> {code}
> I didn't get the Axiom exception, but it only leads to a follow-up exception:
>
>
> {code:java}
> java.lang.IllegalArgumentException: The MessageContext does not have an
> associated SOAPFault.
> at
> org.apache.axis2.util.Utils.getInboundFaultFromMessageContext(Utils.java:533)
> ~[axis2-kernel-2.0.0.2-PWC.jar:2.0.0.2-PWC]
> at
> org.apache.axis2.description.OutInAxisOperationClient.handleResponse(OutInAxisOperation.java:368)
> ~[axis2-kernel-2.0.0.2-PWC.jar:2.0.0.2-PWC]
> {code}
> So all in all, if I am not analyzing this incorrectly, Axis2 doesn't seem to
> be handling the case where an endpoint returns a 404/500 response that is
> HTML and not SOAP (and probably other HTTP status as well (400 BAD_REQUEST,
> 401 UNAUTHORIZED, 403 FORBIDDEN, 418 (I am a teapot! :P), ...).
>
>
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