001/* 002 * ==================================================================== 003 * Licensed to the Apache Software Foundation (ASF) under one 004 * or more contributor license agreements. See the NOTICE file 005 * distributed with this work for additional information 006 * regarding copyright ownership. The ASF licenses this file 007 * to you under the Apache License, Version 2.0 (the 008 * "License"); you may not use this file except in compliance 009 * with the License. You may obtain a copy of the License at 010 * 011 * http://www.apache.org/licenses/LICENSE-2.0 012 * 013 * Unless required by applicable law or agreed to in writing, 014 * software distributed under the License is distributed on an 015 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 016 * KIND, either express or implied. See the License for the 017 * specific language governing permissions and limitations 018 * under the License. 019 * ==================================================================== 020 * 021 * This software consists of voluntary contributions made by many 022 * individuals on behalf of the Apache Software Foundation. For more 023 * information on the Apache Software Foundation, please see 024 * <http://www.apache.org/>. 025 * 026 */ 027 028package org.apache.http.nio; 029 030import java.io.IOException; 031 032/** 033 * Connection input/output control interface. It can be used to control interest 034 * in I/O event notifications for non-blocking HTTP connections. 035 * <p> 036 * Implementations of this interface are expected to be threading safe. 037 * Therefore it can be used to request / suspend I/O event notifications from 038 * any thread of execution. 039 * 040 * @since 4.0 041 */ 042public interface IOControl { 043 044 /** 045 * Requests event notifications to be triggered when the underlying 046 * channel is ready for input operations. 047 */ 048 void requestInput(); 049 050 /** 051 * Suspends event notifications about the underlying channel being 052 * ready for input operations. 053 */ 054 void suspendInput(); 055 056 /** 057 * Requests event notifications to be triggered when the underlying 058 * channel is ready for output operations. 059 */ 060 void requestOutput(); 061 062 /** 063 * Suspends event notifications about the underlying channel being 064 * ready for output operations. 065 */ 066 void suspendOutput(); 067 068 /** 069 * Shuts down the underlying channel. 070 * 071 * @throws IOException in an error occurs 072 */ 073 void shutdown() throws IOException; 074 075}