01: /*
02: * $HeadURL: https://svn.apache.org/repos/asf/httpcomponents/httpcore/tags/4.0-beta1/module-main/src/main/java/org/apache/http/protocol/HTTP.java $
03: * $Revision: 555989 $
04: * $Date: 2007-07-13 15:33:39 +0200 (Fri, 13 Jul 2007) $
05: *
06: * ====================================================================
07: * Licensed to the Apache Software Foundation (ASF) under one
08: * or more contributor license agreements. See the NOTICE file
09: * 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: }
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