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.protocol; 29 30 import java.io.IOException; 31 32 import org.apache.http.HttpException; 33 import org.apache.http.HttpResponse; 34 35 /** 36 * Callback interface to submit HTTP responses asynchronously. 37 * <p> 38 * The {@link NHttpRequestHandler#handle(org.apache.http.HttpRequest, HttpResponse, NHttpResponseTrigger, org.apache.http.protocol.HttpContext)} 39 * method does not have to submit a response immediately. It can defer 40 * transmission of the HTTP response back to the client without blocking the 41 * I/O thread by delegating the process of handling the HTTP request to a worker 42 * thread. The worker thread in its turn can use the instance of 43 * {@link NHttpResponseTrigger} passed as a parameter to submit a response as at 44 * a later point of time once the response becomes available. 45 * 46 * @since 4.0 47 * 48 * @deprecated (4.2) use {@link HttpAsyncExchange} 49 */ 50 @Deprecated 51 public interface NHttpResponseTrigger { 52 53 /** 54 * Submits a response to be sent back to the client as a result of 55 * processing of the request. 56 */ 57 void submitResponse(HttpResponse response); 58 59 /** 60 * Reports a protocol exception thrown while processing the request. 61 */ 62 void handleException(HttpException ex); 63 64 /** 65 * Report an IOException thrown while processing the request. 66 */ 67 void handleException(IOException ex); 68 69 }