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comparison: mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/io/SocketInputBuffer.java
mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/io/SocketInputBuffer.java
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| -1:000000000000 | 0:5f3994bcf053 |
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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.io; | |
| 29 | |
| 30 import java.io.IOException; | |
| 31 import java.io.InterruptedIOException; | |
| 32 import java.net.Socket; | |
| 33 | |
| 34 import ch.boye.httpclientandroidlib.io.EofSensor; | |
| 35 import ch.boye.httpclientandroidlib.io.SessionInputBuffer; | |
| 36 import ch.boye.httpclientandroidlib.params.HttpParams; | |
| 37 | |
| 38 /** | |
| 39 * {@link SessionInputBuffer} implementation bound to a {@link Socket}. | |
| 40 * <p> | |
| 41 * The following parameters can be used to customize the behavior of this | |
| 42 * class: | |
| 43 * <ul> | |
| 44 * <li>{@link ch.boye.httpclientandroidlib.params.CoreProtocolPNames#HTTP_ELEMENT_CHARSET}</li> | |
| 45 * <li>{@link ch.boye.httpclientandroidlib.params.CoreConnectionPNames#MAX_LINE_LENGTH}</li> | |
| 46 * </ul> | |
| 47 * | |
| 48 * @since 4.0 | |
| 49 */ | |
| 50 public class SocketInputBuffer extends AbstractSessionInputBuffer implements EofSensor { | |
| 51 | |
| 52 static private final Class SOCKET_TIMEOUT_CLASS = SocketTimeoutExceptionClass(); | |
| 53 | |
| 54 /** | |
| 55 * Returns <code>SocketTimeoutExceptionClass<code> or <code>null</code> if the class | |
| 56 * does not exist. | |
| 57 * | |
| 58 * @return <code>SocketTimeoutExceptionClass<code>, or <code>null</code> if unavailable. | |
| 59 */ | |
| 60 static private Class SocketTimeoutExceptionClass() { | |
| 61 try { | |
| 62 return Class.forName("java.net.SocketTimeoutException"); | |
| 63 } catch (ClassNotFoundException e) { | |
| 64 return null; | |
| 65 } | |
| 66 } | |
| 67 | |
| 68 private static boolean isSocketTimeoutException(final InterruptedIOException e) { | |
| 69 if (SOCKET_TIMEOUT_CLASS != null) { | |
| 70 return SOCKET_TIMEOUT_CLASS.isInstance(e); | |
| 71 } else { | |
| 72 return true; | |
| 73 } | |
| 74 } | |
| 75 | |
| 76 private final Socket socket; | |
| 77 | |
| 78 private boolean eof; | |
| 79 | |
| 80 /** | |
| 81 * Creates an instance of this class. | |
| 82 * | |
| 83 * @param socket the socket to read data from. | |
| 84 * @param buffersize the size of the internal buffer. If this number is less | |
| 85 * than <code>0</code> it is set to the value of | |
| 86 * {@link Socket#getReceiveBufferSize()}. If resultant number is less | |
| 87 * than <code>1024</code> it is set to <code>1024</code>. | |
| 88 * @param params HTTP parameters. | |
| 89 */ | |
| 90 public SocketInputBuffer( | |
| 91 final Socket socket, | |
| 92 int buffersize, | |
| 93 final HttpParams params) throws IOException { | |
| 94 super(); | |
| 95 if (socket == null) { | |
| 96 throw new IllegalArgumentException("Socket may not be null"); | |
| 97 } | |
| 98 this.socket = socket; | |
| 99 this.eof = false; | |
| 100 if (buffersize < 0) { | |
| 101 buffersize = socket.getReceiveBufferSize(); | |
| 102 } | |
| 103 if (buffersize < 1024) { | |
| 104 buffersize = 1024; | |
| 105 } | |
| 106 init(socket.getInputStream(), buffersize, params); | |
| 107 } | |
| 108 | |
| 109 protected int fillBuffer() throws IOException { | |
| 110 int i = super.fillBuffer(); | |
| 111 this.eof = i == -1; | |
| 112 return i; | |
| 113 } | |
| 114 | |
| 115 public boolean isDataAvailable(int timeout) throws IOException { | |
| 116 boolean result = hasBufferedData(); | |
| 117 if (!result) { | |
| 118 int oldtimeout = this.socket.getSoTimeout(); | |
| 119 try { | |
| 120 this.socket.setSoTimeout(timeout); | |
| 121 fillBuffer(); | |
| 122 result = hasBufferedData(); | |
| 123 } catch (InterruptedIOException e) { | |
| 124 if (!isSocketTimeoutException(e)) { | |
| 125 throw e; | |
| 126 } | |
| 127 } finally { | |
| 128 socket.setSoTimeout(oldtimeout); | |
| 129 } | |
| 130 } | |
| 131 return result; | |
| 132 } | |
| 133 | |
| 134 public boolean isEof() { | |
| 135 return this.eof; | |
| 136 } | |
| 137 | |
| 138 } |
