1 /* 2 * ==================================================================== 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * ==================================================================== 20 * 21 * This software consists of voluntary contributions made by many 22 * individuals on behalf of the Apache Software Foundation. For more 23 * information on the Apache Software Foundation, please see 24 * <http://www.apache.org/>. 25 * 26 */ 27 28 package org.apache.http.nio; 29 30 import java.io.IOException; 31 32 /** 33 * Connection input/output control interface. It can be used to control interest 34 * in I/O event notifications for non-blocking HTTP connections. 35 * <p> 36 * Implementations of this interface are expected to be threading safe. 37 * Therefore it can be used to request / suspend I/O event notifications from 38 * any thread of execution. 39 * 40 * @since 4.0 41 */ 42 public interface IOControl { 43 44 /** 45 * Requests event notifications to be triggered when the underlying 46 * channel is ready for input operations. 47 */ 48 void requestInput(); 49 50 /** 51 * Suspends event notifications about the underlying channel being 52 * ready for input operations. 53 */ 54 void suspendInput(); 55 56 /** 57 * Requests event notifications to be triggered when the underlying 58 * channel is ready for output operations. 59 */ 60 void requestOutput(); 61 62 /** 63 * Suspends event notifications about the underlying channel being 64 * ready for output operations. 65 */ 66 void suspendOutput(); 67 68 /** 69 * Shuts down the underlying channel. 70 * 71 * @throws IOException in an error occurs 72 */ 73 void shutdown() throws IOException; 74 75 }