1 /* 2 * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/protocol/HTTP.java $ 3 * $Revision: 555989 $ 4 * $Date: 2007-07-13 06:33:39 -0700 (Fri, 13 Jul 2007) $ 5 * 6 * ==================================================================== 7 * Licensed to the Apache Software Foundation (ASF) under one 8 * or more contributor license agreements. See the NOTICE file 9 * distributed with this work for additional information 10 * regarding copyright ownership. The ASF licenses this file 11 * to you under the Apache License, Version 2.0 (the 12 * "License"); you may not use this file except in compliance 13 * with the License. You may obtain a copy of the License at 14 * 15 * http://www.apache.org/licenses/LICENSE-2.0 16 * 17 * Unless required by applicable law or agreed to in writing, 18 * software distributed under the License is distributed on an 19 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 20 * KIND, either express or implied. See the License for the 21 * specific language governing permissions and limitations 22 * under the License. 23 * ==================================================================== 24 * 25 * This software consists of voluntary contributions made by many 26 * individuals on behalf of the Apache Software Foundation. For more 27 * information on the Apache Software Foundation, please see 28 * <http://www.apache.org/>. 29 * 30 */ 31 32 package org.apache.http.protocol; 33 34 /** 35 * Constants and static helpers related to the HTTP protocol. 36 * 37 * @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a> 38 * 39 * @version $Revision: 555989 $ 40 * 41 * @since 4.0 42 */ 43 public final class HTTP { 44 45 public static final int CR = 13; // <US-ASCII CR, carriage return (13)> 46 public static final int LF = 10; // <US-ASCII LF, linefeed (10)> 47 public static final int SP = 32; // <US-ASCII SP, space (32)> 48 public static final int HT = 9; // <US-ASCII HT, horizontal-tab (9)> 49 50 /** HTTP header definitions */ 51 public static final String TRANSFER_ENCODING = "Transfer-Encoding"; 52 public static final String CONTENT_LEN = "Content-Length"; 53 public static final String CONTENT_TYPE = "Content-Type"; 54 public static final String CONTENT_ENCODING = "Content-Encoding"; 55 public static final String EXPECT_DIRECTIVE = "Expect"; 56 public static final String CONN_DIRECTIVE = "Connection"; 57 public static final String TARGET_HOST = "Host"; 58 public static final String USER_AGENT = "User-Agent"; 59 public static final String DATE_HEADER = "Date"; 60 public static final String SERVER_HEADER = "Server"; 61 62 /** HTTP expectations */ 63 public static final String EXPECT_CONTINUE = "100-continue"; 64 65 /** HTTP connection control */ 66 public static final String CONN_CLOSE = "Close"; 67 public static final String CONN_KEEP_ALIVE = "Keep-Alive"; 68 69 /** Transfer encoding definitions */ 70 public static final String CHUNK_CODING = "chunked"; 71 public static final String IDENTITY_CODING = "identity"; 72 73 /** Common charset definitions */ 74 public static final String UTF_8 = "UTF-8"; 75 public static final String UTF_16 = "UTF-16"; 76 public static final String US_ASCII = "US-ASCII"; 77 public static final String ASCII = "ASCII"; 78 public static final String ISO_8859_1 = "ISO-8859-1"; 79 80 /** Default charsets */ 81 public static final String DEFAULT_CONTENT_CHARSET = ISO_8859_1; 82 public static final String DEFAULT_PROTOCOL_CHARSET = US_ASCII; 83 84 /** Content type definitions */ 85 public final static String OCTET_STREAM_TYPE = "application/octet-stream"; 86 public final static String PLAIN_TEXT_TYPE = "text/plain"; 87 public final static String CHARSET_PARAM = "; charset="; 88 89 /** Default content type */ 90 public final static String DEFAULT_CONTENT_TYPE = OCTET_STREAM_TYPE; 91 92 public static boolean isWhitespace(char ch) { 93 return ch == SP || ch == HT || ch == CR || ch == LF; 94 } 95 96 private HTTP() { 97 } 98 99 } 100
