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comparison: mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/client/DefaultHttpRequestRetryHandler.java
mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/client/DefaultHttpRequestRetryHandler.java
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| -1:000000000000 | 0:c8d7907bb5d0 |
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| 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 ch.boye.httpclientandroidlib.impl.client; | |
| 29 | |
| 30 import java.io.IOException; | |
| 31 import java.io.InterruptedIOException; | |
| 32 import java.net.ConnectException; | |
| 33 import java.net.UnknownHostException; | |
| 34 | |
| 35 import javax.net.ssl.SSLException; | |
| 36 | |
| 37 import ch.boye.httpclientandroidlib.annotation.Immutable; | |
| 38 | |
| 39 import ch.boye.httpclientandroidlib.HttpEntityEnclosingRequest; | |
| 40 import ch.boye.httpclientandroidlib.HttpRequest; | |
| 41 import ch.boye.httpclientandroidlib.client.HttpRequestRetryHandler; | |
| 42 import ch.boye.httpclientandroidlib.protocol.HttpContext; | |
| 43 import ch.boye.httpclientandroidlib.protocol.ExecutionContext; | |
| 44 | |
| 45 /** | |
| 46 * The default {@link HttpRequestRetryHandler} used by request executors. | |
| 47 * | |
| 48 * | |
| 49 * @since 4.0 | |
| 50 */ | |
| 51 @Immutable | |
| 52 public class DefaultHttpRequestRetryHandler implements HttpRequestRetryHandler { | |
| 53 | |
| 54 /** the number of times a method will be retried */ | |
| 55 private final int retryCount; | |
| 56 | |
| 57 /** Whether or not methods that have successfully sent their request will be retried */ | |
| 58 private final boolean requestSentRetryEnabled; | |
| 59 | |
| 60 /** | |
| 61 * Default constructor | |
| 62 */ | |
| 63 public DefaultHttpRequestRetryHandler(int retryCount, boolean requestSentRetryEnabled) { | |
| 64 super(); | |
| 65 this.retryCount = retryCount; | |
| 66 this.requestSentRetryEnabled = requestSentRetryEnabled; | |
| 67 } | |
| 68 | |
| 69 /** | |
| 70 * Default constructor | |
| 71 */ | |
| 72 public DefaultHttpRequestRetryHandler() { | |
| 73 this(3, false); | |
| 74 } | |
| 75 /** | |
| 76 * Used <code>retryCount</code> and <code>requestSentRetryEnabled</code> to determine | |
| 77 * if the given method should be retried. | |
| 78 */ | |
| 79 public boolean retryRequest( | |
| 80 final IOException exception, | |
| 81 int executionCount, | |
| 82 final HttpContext context) { | |
| 83 if (exception == null) { | |
| 84 throw new IllegalArgumentException("Exception parameter may not be null"); | |
| 85 } | |
| 86 if (context == null) { | |
| 87 throw new IllegalArgumentException("HTTP context may not be null"); | |
| 88 } | |
| 89 if (executionCount > this.retryCount) { | |
| 90 // Do not retry if over max retry count | |
| 91 return false; | |
| 92 } | |
| 93 if (exception instanceof InterruptedIOException) { | |
| 94 // Timeout | |
| 95 return false; | |
| 96 } | |
| 97 if (exception instanceof UnknownHostException) { | |
| 98 // Unknown host | |
| 99 return false; | |
| 100 } | |
| 101 if (exception instanceof ConnectException) { | |
| 102 // Connection refused | |
| 103 return false; | |
| 104 } | |
| 105 if (exception instanceof SSLException) { | |
| 106 // SSL handshake exception | |
| 107 return false; | |
| 108 } | |
| 109 | |
| 110 HttpRequest request = (HttpRequest) | |
| 111 context.getAttribute(ExecutionContext.HTTP_REQUEST); | |
| 112 if (handleAsIdempotent(request)) { | |
| 113 // Retry if the request is considered idempotent | |
| 114 return true; | |
| 115 } | |
| 116 | |
| 117 Boolean b = (Boolean) | |
| 118 context.getAttribute(ExecutionContext.HTTP_REQ_SENT); | |
| 119 boolean sent = (b != null && b.booleanValue()); | |
| 120 | |
| 121 if (!sent || this.requestSentRetryEnabled) { | |
| 122 // Retry if the request has not been sent fully or | |
| 123 // if it's OK to retry methods that have been sent | |
| 124 return true; | |
| 125 } | |
| 126 // otherwise do not retry | |
| 127 return false; | |
| 128 } | |
| 129 | |
| 130 /** | |
| 131 * @return <code>true</code> if this handler will retry methods that have | |
| 132 * successfully sent their request, <code>false</code> otherwise | |
| 133 */ | |
| 134 public boolean isRequestSentRetryEnabled() { | |
| 135 return requestSentRetryEnabled; | |
| 136 } | |
| 137 | |
| 138 /** | |
| 139 * @return the maximum number of times a method will be retried | |
| 140 */ | |
| 141 public int getRetryCount() { | |
| 142 return retryCount; | |
| 143 } | |
| 144 | |
| 145 private boolean handleAsIdempotent(final HttpRequest request) { | |
| 146 return !(request instanceof HttpEntityEnclosingRequest); | |
| 147 } | |
| 148 | |
| 149 } |
