HTTP.java

/******************************************************************
 *
 * CyberHTTP for Java
 *
 * Copyright (C) Satoshi Konno 2002
 *
 * File: HTTP.java
 *
 * Revision:
 *
 * 11/18/02 - first revision. 08/30/03 - Giordano Sassaroli
 * <sassarol@cefriel.it> - Problem : the method getPort should return the
 * default http port 80 when a port is not specified - Description : the method
 * is used in ControlRequest.setRequestHost() and in
 * SubscriptionRequest.setService(). maybe the default port check could be done
 * in these methods. 09/03/02 - Added getRequestHostURL(). 03/11/04 - Added the
 * following methods to send big content stream. post(HTTPResponse, byte[])
 * post(HTTPResponse, InputStream) 05/26/04 - Added NO_CATCH and MAX_AGE.
 * 10/20/04 - Brent Hills <bhills@openshores.com> - Added Range and MYNAME;
 *
 ******************************************************************/

package com.guo.duoduo.airplayreceiver.http;


import java.net.URL;


public class HTTP
{
    ////////////////////////////////////////////////
    // Constants
    ////////////////////////////////////////////////

    public static final String HOST = "HOST";

    public static final String VERSION = "1.1";
    public static final String VERSION_10 = "1.0";
    public static final String VERSION_11 = "1.1";

    public static final String CRLF = "\r\n";
    public static final byte CR = '\r';
    public static final byte LF = '\n';
    public static final String TAB = "\t";

    public static final String SOAP_ACTION = "SOAPACTION";

    public static final String M_SEARCH = "M-SEARCH";
    public static final String NOTIFY = "NOTIFY";
    public static final String POST = "POST";
    public static final String GET = "GET";
    public static final String HEAD = "HEAD";
    public static final String SUBSCRIBE = "SUBSCRIBE";
    public static final String UNSUBSCRIBE = "UNSUBSCRIBE";

    public static final String DATE = "Date";
    public static final String CACHE_CONTROL = "Cache-Control";
    public static final String NO_CACHE = "no-cache";
    public static final String MAX_AGE = "max-age";
    public static final String CONNECTION = "Connection";
    public static final String CLOSE = "close";
    public static final String KEEP_ALIVE = "Keep-Alive";
    public static final String CONTENT_TYPE = "Content-Type";
    public static final String CHARSET = "charset";
    public static final String CONTENT_LENGTH = "Content-Length";
    public static final String CONTENT_LANGUAGE = "Content-Language";
    public static final String CONTENT_RANGE = "Content-Range";
    public static final String CONTENT_RANGE_BYTES = "bytes";
    public static final String RANGE = "Range";
    public static final String TRANSFER_ENCODING = "Transfer-Encoding";
    public static final String CHUNKED = "Chunked";
    public static final String LOCATION = "Location";
    public static final String SERVER = "Server";

    public static final String ST = "ST";
    public static final String MX = "MX";
    public static final String MAN = "MAN";
    public static final String NT = "NT";
    public static final String NTS = "NTS";
    public static final String USN = "USN";
    public static final String EXT = "EXT";
    public static final String SID = "SID";
    public static final String SEQ = "SEQ";
    public final static String CALLBACK = "CALLBACK";
    public final static String TIMEOUT = "TIMEOUT";

    public final static String BOOTID_UPNP_ORG = "BOOTID.UPNP.ORG";

    // Thanks for Brent Hills (10/20/04)
    public final static String MYNAME = "MYNAME";

    public static final String REQEST_LINE_DELIM = " ";
    public static final String HEADER_LINE_DELIM = " :";
    public static final String STATUS_LINE_DELIM = " ";

    public static final int DEFAULT_PORT = 80;
    public static final int DEFAULT_CHUNK_SIZE = 512 * 1024;
    public static final int DEFAULT_TIMEOUT = 30;

    ////////////////////////////////////////////////
    // URL
    ////////////////////////////////////////////////
    private static int chunkSize = DEFAULT_CHUNK_SIZE;

    public static final boolean isAbsoluteURL(String urlStr)
    {
        try
        {
            new URL(urlStr);
            return true;
        }
        catch (Exception e)
        {
            return false;
        }
    }

    public static final String getHost(String urlStr)
    {
        try
        {
            URL url = new URL(urlStr);
            return url.getHost();
        }
        catch (Exception e)
        {
            return "";
        }
    }

    public static final int getPort(String urlStr)
    {
        try
        {
            URL url = new URL(urlStr);
            // Thanks for Giordano Sassaroli <sassarol@cefriel.it> (08/30/03)
            int port = url.getPort();
            if (port <= 0)
                port = DEFAULT_PORT;
            return port;
        }
        catch (Exception e)
        {
            return DEFAULT_PORT;
        }
    }

    public static final String getRequestHostURL(String host, int port)
    {
        String reqHost = "http://" + host + ":" + port;
        return reqHost;
    }

    public static final String toRelativeURL(String urlStr, boolean withParam)
    {
        String uri = urlStr;
        if (isAbsoluteURL(urlStr) == false)
        {
            if (0 < urlStr.length() && urlStr.charAt(0) != '/')
                uri = "/" + urlStr;
        }
        else
        {
            try
            {
                URL url = new URL(urlStr);
                uri = url.getPath();
                if (withParam == true)
                {
                    String queryStr = url.getQuery();
                    if (!queryStr.equals(""))
                    {
                        uri += "?" + queryStr;
                    }
                }
                if (uri.endsWith("/"))
                    uri = uri.substring(0, uri.length() - 1);
            }
            catch (Exception e)
            {
            }
        }
        return uri;
    }

    public static final String toRelativeURL(String urlStr)
    {
        return toRelativeURL(urlStr, true);
    }

    ////////////////////////////////////////////////
    // Chunk Size
    ////////////////////////////////////////////////

    public static final String getAbsoluteURL(String baseURLStr, String relURlStr)
    {
        try
        {
            URL baseURL = new URL(baseURLStr);
            String url = baseURL.getProtocol() + "://" + baseURL.getHost() + ":"
                + baseURL.getPort() + toRelativeURL(relURlStr);
            return url;
        }
        catch (Exception e)
        {
            return "";
        }
    }

    public static final int getChunkSize()
    {
        return chunkSize;
    }

    public static final void setChunkSize(int size)
    {
        chunkSize = size;
    }

}