/*
* Licensed to the Apache Software Foundation ( ASF ) under one or more
* contributor license agreements . See the NOTICE file distributed with
* this work for additional information regarding copyright ownership .
* The ASF licenses this file to You 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 org.apache.tomcat.util.net;
/**
* Defines events that occur per socket that require further processing by the
* container . Usually these events are triggered by the socket implementation
* but they may be triggered by the container .
*/
public enum SocketEvent {
/**
* Data is available to be read .
*/
OPEN_READ,
/**
* The socket is ready to be written to .
*/
OPEN_WRITE,
/**
* The associated Connector / Endpoint is stopping and the connection / socket
* needs to be closed cleanly .
*/
STOP,
/**
* A timeout has occurred and the connection needs to be closed cleanly .
* Currently this is only used by the Servlet 3 . 0 async processing .
*/
TIMEOUT,
/**
* The client has disconnected .
*/
DISCONNECT,
/**
* An error has occurred on a non - container thread and processing needs to
* return to the container for any necessary clean - up . Examples of where
* this is used include :
* < ul >
* < li > by NIO2 to signal the failure of a completion handler < / li >
* < li > by the container to signal an I / O error on a non - container thread
* during Servlet 3 . 0 asynchronous processing . < / li >
* < / ul >
*/
ERROR,
/**
* A client attempted to establish a connection but failed . Examples of
* where this is used include :
* < ul >
* < li > TLS handshake failures < / li >
* < / ul >
*/
CONNECT_FAIL
}
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