/**
 *
 * Copyright 2003-2006 Jive Software.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jivesoftware.smackx.jingleold.nat;

import org.jivesoftware.smack.SmackException.NotConnectedException;

/**
 * Transport resolver Interface .
 */
public interface TransportResolverListener {
    /**
     * Resolver listener.
     */
    interface Resolver extends TransportResolverListener {
        /**
         * The resolution process has been started.
         */
        void init();

        /**
         * A transport candidate has been added.
         *
         * @param cand The transport candidate.
         * @throws NotConnectedException if the XMPP connection is not connected.
         * @throws InterruptedException if the calling thread was interrupted.
         */
        void candidateAdded(TransportCandidate cand) throws NotConnectedException, InterruptedException;

        /**
         * All the transport candidates have been obtained.
         */
        void end();
    }

    /**
     * Resolver checker.
     */
    interface Checker extends TransportResolverListener {
        /**
         * A transport candidate has been checked.
         *
         * @param cand The transport candidate that has been checked.
         * @param result True if the candidate is usable.
         */
        void candidateChecked(TransportCandidate cand, boolean result);

        /**
         * A transport candidate is being checked.
         *
         * @param cand The transport candidate that is being checked.
         */
        void candidateChecking(TransportCandidate cand);
    }
}