Description of the design for the Undertow SAML Authenticators using PicketLink

UndertowSAMLIntegration

PicketLink has SAML Authenticators/Valves for JBossWeb/Tomcat.  
Starting WildFly 8, there is a new web container called as Undertow. 
PicketLink has to create authenticators/Valves for the IDP and SP that work with Undertow.

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Important Requirements:
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- Startup
  * Configuration has to be pluggable and dynamic
  * Schema can be updated to v2.5 so that additional elements can be added
  * Events : UpdateConfigurationEventNotification

- General Processing
  * Use of SAML2 Handlers
  * Use of W3C Document for request/response for XML Signature/Encryption.
  
- Request Processing at IDP
  * Allow seamless failover to REDIRECT profile in the absence of POST binding being used by SP

- Service Providers
  * Separate Authentication Mechanisms that fall back to each of FORM, BASIC, CLIENT-CERT and DIGEST
  
  
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JIRA Issues
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https://issues.jboss.org/browse/PLINK-318