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package gov.nist.javax.sip.message;

import java.text.ParseException;

import javax.sip.header.CSeqHeader;
import javax.sip.header.CallIdHeader;
import javax.sip.header.ContentLengthHeader;
import javax.sip.header.ContentTypeHeader;
import javax.sip.header.FromHeader;
import javax.sip.header.ToHeader;
import javax.sip.header.ViaHeader;
import javax.sip.message.Message;

/**
 *
 * @author [email protected]
 *
 */
public interface MessageExt extends Message {

     /**
     * This method allows applications to associate application context with
     * the message. This specification does not define the format of this
     * data, this the responsibility of the application and is dependent
     * on the application.
     * this application data is un-interpreted by the stack.
     * Beware : when you clone a message, the deepcopy does not apply to the application data
     * (instead, we would just make a copy of the pointer).
     *
     * @param applicationData - un-interpreted application data.
     * @since v2.0
     *
     */

    public void setApplicationData (Object applicationData);


    /**
     * Returns the application data associated with the transaction.This
     * specification does not define the format of this application specific
     * data. This is the responsibility of the application.
     *
     * @return application data associated with the message by the application.
     * @since v2.0
     *
     */
    public Object getApplicationData();
    
    /**
     * Get the multipart mime content from a message. Builds a wrapper around the
     * content and breaks it into multiple sections. Returns these sections as
     * a multipart mime content list. If the content type is not multipart mime
     * then the list will have a single element in it. 
     * 
     * @since v2.0
     * @param Message message
     * @throws ParseException if the content type is multipart mime but the content
     *  is not properly encoded.
     *  
     */
    public MultipartMimeContent getMultipartMimeContent() throws ParseException;
    
    /**
     * Get the topmost Via header.
     * 
     * @since v2.0
     */
    public ViaHeader getTopmostViaHeader();
    
    /**
     * Get the From header or null if none present.
     * 
     * @since v2.0
     */
    public FromHeader getFromHeader();
    
    /**
     * Get the To header or null if none present.
     * 
     * @since v2.0
     */
    public ToHeader getToHeader();
    
    
    /**
     * Get the callId header or null if none present.
     * 
     * @since v2.0
     */
    public CallIdHeader getCallIdHeader();
    
    /**
     * Get the CSeq header or null if none present.
     * 
     * @since v2.0
     */
    public  CSeqHeader getCSeqHeader();
    
    /**
     * Get the content type header or null if none present.
     * 
     * @since v2.0
     */
    public ContentTypeHeader getContentTypeHeader();
    
    /**
     * Get the content length header or null if none present.
     * 
     * @since v2.0
     */
    public ContentLengthHeader getContentLengthHeader();
    
    /**
     * Get the first line of the request or response.
     * 
     * @since v2.0
     */
    public String getFirstLine();

}