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  * Copyright 2014 dc-square GmbH
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
package com.dcsquare.hivemq.spi.callback.exception;
Indicates that the authentication of a certain client failed. As a consequence the client gets disconnected from the broker. The return code, which is sent back to the client, signals what the cause of the failed authentication is. For a complete list of return codes see com.dcsquare.hivemq.spi.message.ReturnCode.

This exception should be used in an implementation of

Christian Goetz
public class AuthenticationException extends Exception {
    private ReturnCode returnCode;
    public AuthenticationException(final ReturnCode returnCode) {
        this. = returnCode;
    public AuthenticationException(final String messagefinal ReturnCode returnCode) {
        this. = returnCode;
    public ReturnCode getReturnCode() {
        return ;
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