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I have an API Manager that sends as-is Http headers to backend. However, when client sends a SAML Response XML to API Manager, Request Header too large error is thrown. Attached Screen shot.

Where can we change the configuration, so as to allow large headers. enter image description here

Abimaran Kugathasan
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sreedhar
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1 Answers1

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Set the appropriate vlaue to maxHttpHeaderSize property in 

<HOME>/repository/conf/tomcat/catalina-server.xml
Jenananthan
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  • did you restart the server ? – Jenananthan Jul 14 '16 at 06:06
  • how do you send SAML Response XML to API Manager through, Can you check this http://stackoverflow.com/questions/26504212/error-parsing-http-request-header – Jenananthan Jul 14 '16 at 06:28
  • may be the value given for maxHttpHeaderSize is smaller than the saml payload size – Jenananthan Jul 14 '16 at 06:31
  • Jenananthan,I am sending the SAML Response XML to API Manager in http headers. When I split the XML and send, it is working perfect. Now, I understand about the payload size you were mentioning. The entire SAML response size is not more than 7KB and I increased the maxHttpHeaderSize to something way bigger than above value. Did a restart of the API M too. But luck is far from near, it seems :) – sreedhar Jul 14 '16 at 08:25
  • Jenananthan,I did small trick while sending from Consumer to Backend via API. I converted the SAML string to Blob and sent to backend. Now, API Manager is NOT COMPLAINING. Looks like API Manager is doing / parsing the XML and not able to understand it. Will keep you posted on that if any thing else comes up. – sreedhar Jul 14 '16 at 08:54
  • @All, instead of sending in HttpHeaders, try sending in body, as suggested by Uvindra Dias Jayasinha (Jira https://wso2.org/jira/browse/APIMANAGER-5238). Working like charm. Need not do anything on API Manager. – sreedhar Jul 14 '16 at 16:49