[jboss-jira] [JBoss JIRA] Created: (JBWEB-149) Occassional NullPointerException when using the AJP Connector
Occassional NullPointerException when using the AJP Connector
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Key: JBWEB-149
URL: https://jira.jboss.org/jira/browse/JBWEB-149
Project: JBoss Web
Issue Type: Bug
Security Level: Public (Everyone can see)
Components: Core
Reporter: Samuel Mendenhall
Assignee: Remy Maucherat
ERROR 2009-04-30 10:54:14,547 [ajp-xxxxxxxxxxxxxxxx%2F10.230.10.131-22803-2][][]
org.apache.coyote.ajp.AjpMessage 'Cannot append null value'
java.lang.NullPointerException
at org.apache.coyote.ajp.AjpMessage.appendString(AjpMessage.java:242)
at org.apache.coyote.ajp.AjpMessage.appendBytes(AjpMessage.java:178)
at org.apache.coyote.ajp.AjpProcessor.prepareResponse(AjpProcessor.java:961)
at org.apache.coyote.ajp.AjpProcessor.action(AjpProcessor.java:495)
at org.apache.coyote.Response.action(Response.java:183)
at org.apache.coyote.Response.sendHeaders(Response.java:379)
at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:305)
at org.apache.catalina.connector.OutputBuffer.close(OutputBuffer.java:273)
at org.apache.catalina.connector.Response.finishResponse(Response.java:486)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:257)
at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:437)
at
org.apache.coyote.ajp.AjpProtocol$AjpConnectionHandler.process(AjpProtocol.java:381)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)
The fix Jean-Frederic highlighted being:
src/share/classes/org/apache/coyote/ajp/AjpProcessor.java
responseHeaderMessage.appendInt(numHeaders);
for (int i = 0; i < numHeaders; i++) {
MessageBytes hN = headers.getName(i);
+ if (hN == null || hN.toString() == null)
+ continue;
int hC = Constants.getResponseAjpIndex(hN.toString());
if (hC > 0) {
responseHeaderMessage.appendInt(hC);
+++
Which, after using a patched jar, the customer has not seen the NPE since.
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