Error: HeadersTooLargeException (Increase maxHttpHeaderSize)

[Sebastian Haunss]

Dear Inception team,

I've received the following error (Inception 20.2):

org.apache.coyote.http11.HeadersTooLargeException: An attempt was made to write more data to the response headers than there was room available in the buffer. Increase maxHttpHeaderSize on the connector or write less data into the response headers.
        at org.apache.coyote.http11.Http11OutputBuffer.checkLengthBeforeWrite(Http11OutputBuffer.java:472) ~[tomcat-embed-core-9.0.45.jar!/:?]
        at org.apache.coyote.http11.Http11OutputBuffer.write(Http11OutputBuffer.java:425) ~[tomcat-embed-core-9.0.45.jar!/:?]
        at org.apache.coyote.http11.Http11OutputBuffer.write(Http11OutputBuffer.java:411) ~[tomcat-embed-core-9.0.45.jar!/:?]
        at org.apache.coyote.http11.Http11OutputBuffer.sendHeader(Http11OutputBuffer.java:371) ~[tomcat-embed-core-9.0.45.jar!/:?]
        at org.apache.coyote.http11.Http11Processor.prepareResponse(Http11Processor.java:1006) ~[tomcat-embed-core-9.0.45.jar!/:?]
        at org.apache.coyote.AbstractProcessor.action(AbstractProcessor.java:379) ~[tomcat-embed-core-9.0.45.jar!/:?]
        at org.apache.coyote.Response.action(Response.java:211) ~[tomcat-embed-core-9.0.45.jar!/:?]
        at org.apache.coyote.Response.sendHeaders(Response.java:438) ~[tomcat-embed-core-9.0.45.jar!/:?]
        at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:292) ~[tomcat-embed-core-9.0.45.jar!/:?]
        at org.apache.catalina.connector.OutputBuffer.close(OutputBuffer.java:252) ~[tomcat-embed-core-9.0.45.jar!/:?]
        at org.apache.catalina.connector.Response.finishResponse(Response.java:443) ~[tomcat-embed-core-9.0.45.jar!/:?]
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:388) ~[tomcat-embed-core-9.0.45.jar!/:?]
        at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374) [tomcat-embed-core-9.0.45.jar!/:?]
        at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) [tomcat-embed-core-9.0.45.jar!/:?]
        at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893) [tomcat-embed-core-9.0.45.jar!/:?]
        at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1707) [tomcat-embed-core-9.0.45.jar!/:?]
        at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.45.jar!/:?]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) [?:?]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) [?:?]
        at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.45.jar!/:?]
        at java.lang.Thread.run(Thread.java:829) [?:?]


Could you tell me where I will have to increase the maxHttpHeaderSize?

Best
Sebastian

[Richard Eckart de Castilho]

On 30. Aug 2021, at 15:56, Sebastian Haunss <sebastia...@uni-bremen.de> wrote:
>
> I've received the following error (Inception 20.2):

What are you doing when you encounter this problem. Normally, we shouldn't be writing tons of information into the headers, so I wonder where this comes from.

Best,

-- Richard