chunk 有关代码

package org.apache.commons.httpclient.server; 
  
import java.io.ByteArrayInputStream; 
import java.io.ByteArrayOutputStream; 
import java.io.IOException; 
import java.io.InputStream; 
import java.io.UnsupportedEncodingException; 
import java.util.Iterator; 
  
import org.apache.commons.httpclient.ChunkedInputStream; 
import org.apache.commons.httpclient.ContentLengthInputStream; 
import org.apache.commons.httpclient.Header; 
import org.apache.commons.httpclient.HeaderElement; 
import org.apache.commons.httpclient.HeaderGroup; 
import org.apache.commons.httpclient.HttpStatus; 
import org.apache.commons.httpclient.HttpVersion; 
import org.apache.commons.httpclient.NameValuePair; 
import org.apache.commons.httpclient.StatusLine; 
  
/** 
 * A generic HTTP response. 
 *  
 * @author Christian Kohlschuetter 
 * @author Oleg Kalnichevski 
 */
public class SimpleResponse { 
      
    public static final String DEFAULT_CONTENT_CHARSET = "ISO-8859-1"; 
      
    private HttpVersion ver = HttpVersion.HTTP_1_1; 

    private int statuscode = HttpStatus.SC_OK; 
    private String phrase = HttpStatus.getStatusText(HttpStatus.SC_OK); 
    private HeaderGroup headers = new HeaderGroup(); 
    private InputStream entity = null; 
  
    public SimpleResponse() { 
        super(); 
    } 
  
    public SimpleResponse( 
            final StatusLine statusline,  
            final Header[] headers,  
            final InputStream content)  
            throws IOException { 
        super(); 
        if (statusline == null) { 
            throw new IllegalArgumentException("Status line may not be null"); 
        } 
        setStatusLine(HttpVersion.parse(statusline.getHttpVersion()), 
                statusline.getStatusCode(), statusline.getReasonPhrase()); 
        setHeaders(headers); 
        if (content != null) { 
            InputStream in = content; 
            Header contentLength = this.headers.getFirstHeader("Content-Length"); 
            Header transferEncoding = this.headers.getFirstHeader("Transfer-Encoding"); 
  
            if (transferEncoding != null) { 
                if (transferEncoding.getValue().indexOf("chunked") != -1) { 
                    in = new ChunkedInputStream(in); 
                }