public interface CometProcessor extends Servlet{
public void event(CometEvent event)
throws IOException, ServletException;
}
public class CometServlet extends HttpServlet implements CometProcessor {
protected ArrayList connections = new ArrayList();
public void event(CometEvent event) throws IOException, ServletException {
HttpServletRequest request = event.getHttpServletRequest();
HttpServletResponse response = event.getHttpServletResponse();
if (event.getEventType() == CometEvent.EventType.BEGIN) {
synchronized (connections) {
connections.add(response);
}
} else if (event.getEventType() == CometEvent.EventType.ERROR) {
synchronized (connections) {
connections.remove(response);
}
}else if (event.getEventType() == CometEvent.EventType.END) {
synchronized (connections) {
connections.remove(response);
}
} else if (event.getEventType() == CometEvent.EventType.READ) {
InputStream is = request.getInputStream();
byte[] buf = new byte[512];
do {
int n = is.read(buf);
if (n > 0) {
System.out.println(new String(buf, 0, n));
} else if (n < 0) {
return;
}
} while (is.available() > 0);
}
}
}
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