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1 /* |
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2 * ==================================================================== |
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3 * Licensed to the Apache Software Foundation (ASF) under one |
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4 * or more contributor license agreements. See the NOTICE file |
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5 * distributed with this work for additional information |
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6 * regarding copyright ownership. The ASF licenses this file |
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7 * to you under the Apache License, Version 2.0 (the |
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8 * "License"); you may not use this file except in compliance |
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9 * with the License. You may obtain a copy of the License at |
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10 * |
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11 * http://www.apache.org/licenses/LICENSE-2.0 |
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12 * |
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13 * Unless required by applicable law or agreed to in writing, |
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14 * software distributed under the License is distributed on an |
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15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
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16 * KIND, either express or implied. See the License for the |
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17 * specific language governing permissions and limitations |
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18 * under the License. |
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19 * ==================================================================== |
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20 * |
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21 * This software consists of voluntary contributions made by many |
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22 * individuals on behalf of the Apache Software Foundation. For more |
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23 * information on the Apache Software Foundation, please see |
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24 * <http://www.apache.org/>. |
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25 * |
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26 */ |
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27 |
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28 package ch.boye.httpclientandroidlib.entity; |
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29 |
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30 import ch.boye.httpclientandroidlib.HttpException; |
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31 import ch.boye.httpclientandroidlib.HttpMessage; |
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32 |
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33 /** |
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34 * Represents a strategy to determine length of the enclosed content entity |
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35 * based on properties of the HTTP message. |
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36 * |
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37 * @since 4.0 |
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38 */ |
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39 public interface ContentLengthStrategy { |
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40 |
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41 public static final int IDENTITY = -1; |
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42 public static final int CHUNKED = -2; |
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43 |
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44 /** |
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45 * Returns length of the given message in bytes. The returned value |
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46 * must be a non-negative number, {@link #IDENTITY} if the end of the |
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47 * message will be delimited by the end of connection, or {@link #CHUNKED} |
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48 * if the message is chunk coded |
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49 * |
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50 * @param message |
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51 * @return content length, {@link #IDENTITY}, or {@link #CHUNKED} |
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52 * |
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53 * @throws HttpException in case of HTTP protocol violation |
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54 */ |
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55 long determineLength(HttpMessage message) throws HttpException; |
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56 |
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57 } |