streamhostprovider.java

网站即时通讯系统

package com.valhalla.jbother.jabber.smack.provider;
import com.valhalla.jbother.jabber.smack.*;

import org.jivesoftware.smack.provider.IQProvider;
import org.jivesoftware.smack.packet.IQ;
import org.xmlpull.v1.XmlPullParser;

/**
 * Created by IntelliJ IDEA.
 * User: luke
 * Date: Jan 20, 2005
 * Time: 10:48:16 AM
 * To change this template use Options | File Templates.
 */

/**
 * this class implements a provider for <streamhost> and <streamhost-used>
 * packets.
 */
public class StreamhostProvider implements IQProvider
{
  private static String fId = "$Id$";

  public static final String NAMESPACE = "http://jabber.org/protocol/bytestreams";

  public IQ parseIQ(XmlPullParser parser) throws Exception
  {
    boolean done = false;
    int port = -1;
    String host = "";
    String jid = "";
    boolean isStreamhostUsed = false;
    String sid = parser.getAttributeValue("","sid");;

    while (!done) {
      int eventType = parser.next();
      String elementName = parser.getName();
      String namespace = parser.getNamespace();

      if (eventType == XmlPullParser.START_TAG)
      {
        if (elementName.equals("streamhost"))
        {
          port = Integer.parseInt(parser.getAttributeValue("","port"));
          host = parser.getAttributeValue("","host");
          jid = parser.getAttributeValue("","jid");
          isStreamhostUsed = false;
        }
        else if (elementName.equals("streamhost-used"))
        {
          jid = parser.getAttributeValue("","jid");
          isStreamhostUsed = true;
        }
        else if (elementName.equals("fast") && namespace.equals("http://affinix.com/jabber/stream/"))
        {
          // other side is Psi
          // (I don't know if we can use this information)
        }
      }
      else if (eventType == XmlPullParser.END_TAG && elementName.equals("query")) {
          done = true;
      }
    }

    if (isStreamhostUsed == true) {
      return new StreamhostUsed(jid);
    } else {
      return new Streamhost(port,host,jid,sid);
    }
  }


}