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  1. Undertow
  2. UNDERTOW-1021

AJP listener should log at DEBUG level when handling 400 Bad Request like wrong magic number and invalid Content-Length

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      The following ERROR log message is shown when ajp-listener handles other protocol than AJP. For example, sending HTTP request agasint AJP port like "curl -v http://localhost:8009":

      ERROR [io.undertow.request] (default I/O-46) UT005001: An exception occurred processing the request: java.io.IOException: UT000066: Incorrect magic number 18245 for AJP packet header
	at io.undertow.server.protocol.ajp.AjpRequestParser.parse(AjpRequestParser.java:189)
	at io.undertow.server.protocol.ajp.AjpReadListener.handleEvent(AjpReadListener.java:166)
	at io.undertow.server.protocol.ajp.AjpOpenListener.handleEvent(AjpOpenListener.java:131)
	at io.undertow.server.protocol.ajp.AjpOpenListener.handleEvent(AjpOpenListener.java:51)
	at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
	at org.xnio.ChannelListeners$10.handleEvent(ChannelListeners.java:291)
	at org.xnio.ChannelListeners$10.handleEvent(ChannelListeners.java:286)
	at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
	at org.xnio.nio.QueuedNioTcpServer$1.run(QueuedNioTcpServer.java:129)
	at org.xnio.nio.WorkerThread.safeRun(WorkerThread.java:588)
	at org.xnio.nio.WorkerThread.run(WorkerThread.java:468)

      The following ERROR log message is shown when ajp-listener receives invalid Content-Length. For example, "Content-Length: a". (Note: Most of front-end loadbalancer reject such invalid Content-Length before forwarding to a backend server. But, as far as I tested, mod_proxy forwards the request and causes this ERROR log.)

      ERROR [io.undertow.request] (default I/O-14) UT005001: An exception occurred processing the request: java.lang.NumberFormatException: For input string: "a"
	at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
	at java.lang.Long.parseLong(Long.java:589)
	at java.lang.Long.parseLong(Long.java:631)
	at io.undertow.server.protocol.ajp.AjpReadListener.createSourceConduit(AjpReadListener.java:319)
	at io.undertow.server.protocol.ajp.AjpReadListener.handleEvent(AjpReadListener.java:212)
	at io.undertow.server.protocol.ajp.AjpOpenListener.handleEvent(AjpOpenListener.java:131)
	at io.undertow.server.protocol.ajp.AjpOpenListener.handleEvent(AjpOpenListener.java:51)
	at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
	at org.xnio.ChannelListeners$10.handleEvent(ChannelListeners.java:291)
	at org.xnio.ChannelListeners$10.handleEvent(ChannelListeners.java:286)
	at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
	at org.xnio.nio.QueuedNioTcpServer$1.run(QueuedNioTcpServer.java:129)
	at org.xnio.nio.WorkerThread.safeRun(WorkerThread.java:588)
	at org.xnio.nio.WorkerThread.run(WorkerThread.java:468)

      The above should be treated as "400 Bad Request", so undertow should log at DEBUG level to avoid filling the logs.

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          Bug - A problem that impairs or prevents the functions of the product. JBEAP-10150 [GSS] (7.0.z) UNDERTOW-1021 - AJP listener should log at DEBUG level when handling 400 Bad Request like wrong magic number and invalid Content-Length

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Verified

          Bug - A problem that impairs or prevents the functions of the product. JBEAP-10151 [GSS] (7.1.0) UNDERTOW-1021 AJP listener should log at DEBUG level when handling 400 Bad Request like wrong magic number and invalid Content-Length

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Verified

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              sdouglas1@redhat.com Stuart Douglas
              rhn-support-mmiura Masafumi Miura
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