Probably you are doing a very large POST or PUT to a secure URL, the adapter is trying to save the request in the HttpSession and running into buffer limits.  getMaxSavePostSize()  Probably a tomcat setting somewhere.


On 6/13/16 12:59 PM, Richard Lavallee wrote:

Is anyone familiar with the below stack trace trying to connect Keycloak to Tomcat, please?


type Exception report

message Could not create authentication request.

description The server encountered an internal error that prevented it from fulfilling this request.

exception

java.lang.RuntimeException: Could not create authentication request.
	org.keycloak.adapters.saml.AbstractInitiateLogin.challenge(AbstractInitiateLogin.java:63)
	org.keycloak.adapters.saml.AbstractSamlAuthenticatorValve.executeAuthenticator(AbstractSamlAuthenticatorValve.java:247)
	org.keycloak.adapters.saml.AbstractSamlAuthenticatorValve.authenticateInternal(AbstractSamlAuthenticatorValve.java:222)
	org.keycloak.adapters.saml.tomcat.SamlAuthenticatorValve.authenticate(SamlAuthenticatorValve.java:42)
	org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:574)
	org.keycloak.adapters.saml.AbstractSamlAuthenticatorValve.invoke(AbstractSamlAuthenticatorValve.java:184)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
	org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
	org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
	org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
	org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
	java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	java.lang.Thread.run(Thread.java:744)

root cause

java.lang.RuntimeException: java.io.IOException: Buffer overflow, no sink 4096 4096
	org.keycloak.adapters.saml.CatalinaSamlSessionStore.saveRequest(CatalinaSamlSessionStore.java:226)
	org.keycloak.adapters.saml.AbstractInitiateLogin.challenge(AbstractInitiateLogin.java:58)
	org.keycloak.adapters.saml.AbstractSamlAuthenticatorValve.executeAuthenticator(AbstractSamlAuthenticatorValve.java:247)
	org.keycloak.adapters.saml.AbstractSamlAuthenticatorValve.authenticateInternal(AbstractSamlAuthenticatorValve.java:222)
	org.keycloak.adapters.saml.tomcat.SamlAuthenticatorValve.authenticate(SamlAuthenticatorValve.java:42)
	org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:574)
	org.keycloak.adapters.saml.AbstractSamlAuthenticatorValve.invoke(AbstractSamlAuthenticatorValve.java:184)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
	org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
	org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
	org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
	org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
	java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	java.lang.Thread.run(Thread.java:744)

root cause

java.io.IOException: Buffer overflow, no sink 4096 4096
	org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:477)
	org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:366)
	org.apache.catalina.authenticator.FormAuthenticator.saveRequest(FormAuthenticator.java:664)
	org.keycloak.adapters.saml.AbstractSamlAuthenticatorValve.keycloakSaveRequest(AbstractSamlAuthenticatorValve.java:253)
	org.keycloak.adapters.saml.CatalinaSamlSessionStore.saveRequest(CatalinaSamlSessionStore.java:224)
	org.keycloak.adapters.saml.AbstractInitiateLogin.challenge(AbstractInitiateLogin.java:58)
	org.keycloak.adapters.saml.AbstractSamlAuthenticatorValve.executeAuthenticator(AbstractSamlAuthenticatorValve.java:247)
	org.keycloak.adapters.saml.AbstractSamlAuthenticatorValve.authenticateInternal(AbstractSamlAuthenticatorValve.java:222)
	org.keycloak.adapters.saml.tomcat.SamlAuthenticatorValve.authenticate(SamlAuthenticatorValve.java:42)
	org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:574)
	org.keycloak.adapters.saml.AbstractSamlAuthenticatorValve.invoke(AbstractSamlAuthenticatorValve.java:184)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
	org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
	org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
	org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
	org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
	java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	java.lang.Thread.run(Thread.java:744)
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