/*
* 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.coyote;
import java.io.IOException;
import java.nio.ByteBuffer;
import org.apache.tomcat.util.net.AbstractEndpoint.Handler.SocketState;
import org.apache.tomcat.util.net.SSLSupport;
import org.apache.tomcat.util.net.SocketEvent;
import org.apache.tomcat.util.net.SocketWrapperBase;
/**
* Common interface for processors of all protocols .
*/
public interface Processor {
/**
* Process a connection . This is called whenever an event occurs ( e . g . more data arrives ) that allows processing to
* continue for a connection that is not currently being processed .
*
* @ param socketWrapper The connection to process
* @ param status The status of the connection that triggered this additional processing
*
* @ return The state the caller should put the socket in when this method returns
*
* @ throws IOException If an I / O error occurs during the processing of the request
*/
SocketState process(SocketWrapperBase<?> socketWrapper, SocketEvent status) throws IOException;
/**
* Generate an upgrade token .
*
* @ return An upgrade token encapsulating the information required to process the upgrade request
*
* @ throws IllegalStateException if this is called on a Processor that does not support upgrading
*/
UpgradeToken getUpgradeToken();
/**
* @ return { @ code true } if the Processor is currently processing an upgrade request , otherwise { @ code false }
*/
boolean isUpgrade();
boolean isAsync();
/**
* Check this processor to see if the timeout has expired and process a timeout if that is that case .
* < p >
* Note : The name of this method originated with the Servlet 3 . 0 asynchronous processing but evolved over time to
* represent a timeout that is triggered independently of the socket read / write timeouts .
*
* @ param now The time ( as returned by { @ link System # currentTimeMillis ( ) } to use as the current time to determine
* whether the timeout has expired . If negative , the timeout will always be treated as ifq it has
* expired .
*/
void timeoutAsync(long now);
/**
* @ return The request associated with this processor .
*/
Request getRequest();
/**
* Recycle the processor , ready for the next request which may be on the same connection or a different connection .
*/
void recycle();
/**
* Set the SSL information for this HTTP connection .
*
* @ param sslSupport The SSL support object to use for this connection
*/
void setSslSupport(SSLSupport sslSupport);
/**
* Allows retrieving additional input during the upgrade process .
*
* @ return leftover bytes
*
* @ throws IllegalStateException if this is called on a Processor that does not support upgrading
*/
ByteBuffer getLeftoverInput();
/**
* Informs the processor that the underlying I / O layer has stopped accepting new connections . This is primarily
* intended to enable processors that use multiplexed connections to prevent further ' streams ' being added to an
* existing multiplexed connection .
*/
void pause();
/**
* Check to see if the async generation ( each cycle of async increments the generation of the AsyncStateMachine ) is
* the same as the generation when the most recent async timeout was triggered . This is intended to be used to avoid
* unnecessary processing .
*
* @ return { @ code true } If the async generation has not changed since the async timeout was triggered
*/
boolean checkAsyncTimeoutGeneration();
}
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(vorverarbeitet am 2026-09-27)
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