Elytron ExternalSaslServer must finish with null returned from evaluateResponse method -------------------------------------------------------------------------------------- Key: ELY-803 URL: https://issues.jboss.org/browse/ELY-803 Project: WildFly Elytron Issue Type: Bug Reporter: Josef Cacek Assignee: Ilia Vassilev Priority: Critical The {{ExternalSaslServer.evaluateResponse}} returns empty byte array instead of null after successful authentication. [The contract|http://docs.oracle.com/javase/8/docs/api/javax/security/sasl/Sas...] says: {quote} It is null if the authentication has succeeded and there is no more challenge data to be sent to the client. {quote} *Possible fix* Return null when authentication succeeds.