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Bug
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Resolution: Not a Bug
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Highest
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Oslo Release
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None
NCMP throws "HTTP 431 Request Header Fields Too Large" response when trying to fetch attribute details.
Affected version
3.4.8, also observed on 3.5.0
Reproduction
curl --location --request GET 'https://<ncmpHost>/ncmp/v1/ch/<cmHandleId>/data/ds/ncmp-datastore:passthrough-operational?resourceIdentifier=GNBDUFunction=1' \
--header 'Content-Type: application/json' \
--header 'Cookie: <8000 long string which fits in to 8KByte header limit>'
Expected behavior
Do not throw an error when the full request size is under the 8KB limit. The error message should not only contain the exception, but ideally provide which request header field is too large.
Workaround
Send a smaller request.
Impact
The user sends a request which spring boot should be able to handle, but the underlying server still throws an error, so valid requests fail.
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=ISO-8859-1"/>
<title>Error 431 Request Header Fields Too Large</title>
</head>
<body>
<h2>HTTP ERROR 431 Request Header Fields Too Large</h2>
<table>
<tr><th>URI:</th><td>/v1/ch/256DCEB2614EE90305A25CA1CDCCA288/data/ds/ncmp-datastore:passthrough-operational?resourceIdentifier=GNBDUFunction=1</td></tr>
<tr><th>STATUS:</th><td>431</td></tr>
<tr><th>MESSAGE:</th><td>Request Header Fields Too Large</td></tr>
<tr><th>CAUSED BY:</th><td>org.eclipse.jetty.http.BadMessageException: 431: null</td></tr>
</table>
<h3>Caused by:</h3><pre>org.eclipse.jetty.http.BadMessageException: 431: null
at org.eclipse.jetty.http.HttpParser.parseFields(HttpParser.java:1164)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:1545)
at org.eclipse.jetty.server.internal.HttpConnection.parseRequestBuffer(HttpConnection.java:568)
at org.eclipse.jetty.server.internal.HttpConnection.onFillable(HttpConnection.java:391)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:322)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:99)
at org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:53)
at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:478)
at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:441)
at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:293)
at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.run(AdaptiveExecutionStrategy.java:201)
at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:410)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:971)
at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1201)
at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1156)
at java.base/java.lang.Thread.run(Thread.java:840)
</pre>
</body>
</html>
