/* * 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;
/** * Common interface for processors of all protocols.
*/ publicinterface 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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