001package votorola.g.web; // Copyright 2012, Michael Allan.  Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Votorola Software"), to deal in the Votorola Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicence, and/or sell copies of the Votorola Software, and to permit persons to whom the Votorola Software is furnished to do so, subject to the following conditions: The preceding copyright notice and this permission notice shall be included in all copies or substantial portions of the Votorola Software. THE VOTOROLA SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE VOTOROLA SOFTWARE OR THE USE OR OTHER DEALINGS IN THE VOTOROLA SOFTWARE.
002
003import java.net.*;
004import java.util.*;
005import javax.servlet.http.*;
006import votorola.g.lang.*;
007
008
009/** Servlet response utilities.
010  *
011  *     @see HttpServletResponse
012  */
013public @ThreadSafe final class HTTPServletResponseX
014{
015
016    private HTTPServletResponseX() {}
017
018
019
020    /** Copies headers of the specified name from an incoming server response (http) to an
021      * outgoing client response (resHS).
022      */
023    public static void relayHeaders( final String name, final URLConnection http,
024      final HttpServletResponse resHS )
025    {
026        final List<String> values = http.getHeaderFields().get( name );
027        if( values != null ) for( final String value: values ) resHS.addHeader( name, value );
028    }
029
030
031}