Java 8+ supports unbound SASL servers; GSSAPI and DIGEST-MD5 both use this value -------------------------------------------------------------------------------- Key: ELY-124 URL: https://issues.jboss.org/browse/ELY-124 Project: WildFly Elytron Issue Type: Task Components: SASL Reporter: David Lloyd Assignee: Darran Lofthouse Fix For: 1.0.0.Beta1 Since Java 8, the SaslServerFactory interface has been changed so that the serverName may be null. If null, the server name is considered "unbound" and the client can select what server name it wants to use. The release notes say: {quote} SASL service for multiple host names: When creating a SASL server, the server name can be set to null to denote an unbound server, which means a client can request for the service using any server name. After a context is established, the server can retrieve the name as a negotiated property with the key name SASL.BOUND_SERVER_NAME. See RFE 7110803. {quote} The updated JavaDoc says: {quote} serverName - The fully qualified host name of the server to authenticate to, or null if the server is not bound to any specific host name. If the mechanism does not allow an unbound server, a SaslException will be thrown. {quote} The RFE link is: http://bugs.java.com/bugdatabase/view_bug.do?bug_id=7110803 The two SASL mechanisms in Elytron that would be impacted by this are DIGEST-MD5 and GSSAPI.