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      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  * @deprecated Please use {@link java.net.URL#openConnection} instead.
     44  *     Please visit <a href="http://android-developers.blogspot.com/2011/09/androids-http-clients.html">this webpage</a>
     45  *     for further details.
     46  */
     47 @Deprecated
     48 public final class HTTP {
     49 
     50     public static final int CR = 13; // <US-ASCII CR, carriage return (13)>
     51     public static final int LF = 10; // <US-ASCII LF, linefeed (10)>
     52     public static final int SP = 32; // <US-ASCII SP, space (32)>
     53     public static final int HT = 9;  // <US-ASCII HT, horizontal-tab (9)>
     54 
     55     /** HTTP header definitions */
     56     public static final String TRANSFER_ENCODING = "Transfer-Encoding";
     57     public static final String CONTENT_LEN  = "Content-Length";
     58     public static final String CONTENT_TYPE = "Content-Type";
     59     public static final String CONTENT_ENCODING = "Content-Encoding";
     60     public static final String EXPECT_DIRECTIVE = "Expect";
     61     public static final String CONN_DIRECTIVE = "Connection";
     62     public static final String TARGET_HOST = "Host";
     63     public static final String USER_AGENT = "User-Agent";
     64     public static final String DATE_HEADER = "Date";
     65     public static final String SERVER_HEADER = "Server";
     66 
     67     /** HTTP expectations */
     68     public static final String EXPECT_CONTINUE = "100-continue";
     69 
     70     /** HTTP connection control */
     71     public static final String CONN_CLOSE = "Close";
     72     public static final String CONN_KEEP_ALIVE = "Keep-Alive";
     73 
     74     /** Transfer encoding definitions */
     75     public static final String CHUNK_CODING = "chunked";
     76     public static final String IDENTITY_CODING = "identity";
     77 
     78     /** Common charset definitions */
     79     public static final String UTF_8 = "UTF-8";
     80     public static final String UTF_16 = "UTF-16";
     81     public static final String US_ASCII = "US-ASCII";
     82     public static final String ASCII = "ASCII";
     83     public static final String ISO_8859_1 = "ISO-8859-1";
     84 
     85     /** Default charsets */
     86     public static final String DEFAULT_CONTENT_CHARSET = ISO_8859_1;
     87     public static final String DEFAULT_PROTOCOL_CHARSET = US_ASCII;
     88 
     89     /** Content type definitions */
     90     public final static String OCTET_STREAM_TYPE = "application/octet-stream";
     91     public final static String PLAIN_TEXT_TYPE = "text/plain";
     92     public final static String CHARSET_PARAM = "; charset=";
     93 
     94     /** Default content type */
     95     public final static String DEFAULT_CONTENT_TYPE = OCTET_STREAM_TYPE;
     96 
     97     public static boolean isWhitespace(char ch) {
     98         return ch == SP || ch == HT || ch == CR || ch == LF;
     99     }
    100 
    101     private HTTP() {
    102     }
    103 
    104 }
    105