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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
  *
  *       http://www.apache.org/licenses/LICENSE-2.0
  *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.dcsquare.hivemq.spi.callback.security;
This callback gets called when a CONNECT message arrives and is meant to perform the authentication of a client.

When more OnAuthenticationCallbacks are added only one must return a positive result to successfully authenticate the client.

If an com.dcsquare.hivemq.spi.callback.exception.AuthenticationException is thrown, no additional credentials checks in other plugins are made and the client is disconnected immediately with an CONNACK with the given return code.

Note: It's your responsibility to use proper caching in the checkCredentials method

Author(s):
Christian Goetz
Since:
1.4
public interface OnAuthenticationCallback extends SynchronousCallback {

    
Checks the credentials after a CONNECT message arrives.

return true when the authentication with the credentials was successful, false otherwise

Parameters:
clientData the client credentials
Returns:
true when the authentication was successful
Throws:
com.dcsquare.hivemq.spi.callback.exception.AuthenticationException when you want the client to disconnect immediately with a given return code
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