maximum MAX_HEADER_SIZE in Standalone.xml

[varsha.g]

What is the maximum MAX_HEADER_SIZE value, we can set in Standalone.xml under Jboss7.1.1.Final?

I checked for data with size 5Mb,and it's accepting it.But is it having any maximumlength?

[avijra]

Hi Varsha,

according to org.apache.coyote.http11.Http11Protocol class the default size of MAX_HEADER_SIZE is 8192 bytes but maximum size should depend solely on the client browser , how big a header size a browser can handle . server merely needs to read it.

I don't think jboss web imposes any restrictions on the maximum size of the MAX_HEADER_SIZE .

[jaysensharma]

Hi Varsha g,

      You can not have more than the following value in MAX_HEADER_SIZE     2147483647   (As this is the Max Integer Value 2147483647)

       http://anonsvn.jboss.org/repos/jbossweb/tags/JBOSSWEB_7_0_16_FINAL/java/org/apache/coyote/http11/Http11Protocol.java

protected int maxHttpHeaderSize = Integer.valueOf(System.getProperty("org.apache.coyote.http11.Http11Protocol.MAX_HEADER_SIZE", "8192")).intValue();

     So if you will start your JBoss with more than the value "2147483647"  then you will see following excception at the server start up.

     -Dorg.apache.coyote.http11.Http11Protocol.MAX_HEADER_SIZE=2147483648

16:53:35,812 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-6) MSC000001: Failed to start service jboss.web.connector.http: org.jboss.msc.service.StartException in service jboss.web.connector.http: JBAS018007: Error starting web connector

          at org.jboss.as.web.WebConnectorService.start(WebConnectorService.java:272)

          at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) [jboss-msc-1.0.2.GA-redhat-2.jar:1.0.2.GA-redhat-2]

          at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.2.GA-redhat-2.jar:1.0.2.GA-redhat-2]

          at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885) [rt.jar:1.6.0_05]

          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907) [rt.jar:1.6.0_05]

          at java.lang.Thread.run(Thread.java:619) [rt.jar:1.6.0_05]

Caused by: java.lang.IllegalArgumentException: Protocol handler instantiation failed: java.lang.NumberFormatException: For input string: "2147483648"

          at org.apache.catalina.connector.Connector.<init>(Connector.java:91)

          at org.jboss.as.web.WebConnectorService.start(WebConnectorService.java:91)

          ... 5 more

[varsha.g]

Hi

Jay Kumar SenSharma ,

I randomly put value as 100000000 but 2147483647 seems long

I checked for more value than 2147483647,and it showed exception.

Thanks for the answer.