Could this help you? http://www.jboss.org/community/docs/DOC-12529 Ivars Going over the 8K AJP headers limits:The default size of a AJP package is 8K as the http headers are sent only in the first packet it could be needed to overcome the limit.
To reach this you need to add packetSize parameter in the <Connector/> parameter like:
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<Connector port="8009" protocol="AJP/1.3"
packetSize="20000"
redirectPort="8443" ></Connector>
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and ProxyIOBufferSize (also LimitRequestFieldsize probably) directive in
httpd.conf too. For example:
| ProxyIOBufferSize 19000 LimitRequestFieldsize 18000 | packetSize is supported since Tomcat 5.5.21 and Tomcat 6.0.1. Torsten Krah wrote:
Hi,i am facing some problems connecting tomcat ajp with apache through mod_proxy_ajp:The log shows often something like this: ############################################################################# ajp_marshal_into_msgb - No such method ssiers%2FM%25C3%25BCllskandal%22%3B%7D ajp_send_header: ajp_marshal_into_msgb failed(120010)APR does not understand this error code: proxy: AJP: request failed to (null) (*)request failed: error reading the headers ajp_marshal_into_msgb: Error appending the header value ajp_send_header: ajp_marshal_into_msgb failed(120001)APR does not understand this error code: proxy: AJP: request failed to (null) (*)#############################################################################According to the error.log messages code 400 bad request are shown in access.log - looking at the timestamps i guess they are connected to each other.Reading through the lists i did found following archive message: http://www.mail-archive.com/users@xxxxxxxxxxxxxxxxx/msg57693.htmlThe answer is that the request headers have to fit into 8Kb or the request fails.Looking at the failing request the cookie information is more than 8Kb. Looking at the AJP3 docs here: http://tomcat.apache.org/connectors-doc/ajp/ajpv13a.html reading at the end this scenario is mentioned and causes a failing connector. Looking at the apache docs: http://httpd.apache.org/docs/2.2/mod/mod_proxy_ajp.html there is only mentioned that the packet size is 8Kb (much of the code ...). The failure case question is missing here.So my question is - have i have to force the application to minimize the cookie size to get the request header into the first 8Kb packet or is there another way how to handle this?http://httpd.apache.org/docs/2.2/mod/core.html#limitrequestfieldsizeWith this directive the maximum header size can be increased - does this work for mod_proxy_ajp too?thx for help Torsten
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