org.jivesoftware.smack.util.SyncPacketSend Maven / Gradle / Ivy

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/**
 * All rights reserved. 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.smack.util;

import org.jivesoftware.smack.Connection;
import org.jivesoftware.smack.PacketCollector;
import org.jivesoftware.smack.SmackConfiguration;
import org.jivesoftware.smack.SmackError;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.filter.PacketFilter;
import org.jivesoftware.smack.filter.PacketIDFilter;
import org.xmpp.packet.Packet;

/**
 * Utility class for doing synchronous calls to the server. Provides several
 * methods for sending a packet to the server and waiting for the reply.
 * 
 * @author Robin Collier
 */
final public class SyncPacketSend {
    private SyncPacketSend() {
    }

    static public Packet getReply(Connection connection, Packet packet,
            long timeout) throws XMPPException {
        PacketFilter responseFilter = new PacketIDFilter(packet.getID());
        PacketCollector response = connection
                .createPacketCollector(responseFilter);

        connection.sendPacket(packet);

        // Wait up to a certain number of seconds for a reply.
        Packet result = response.nextResult(timeout);

        // Stop queuing results
        response.cancel();

        if (result == null) {
            throw new XMPPException(SmackError.NO_RESPONSE_FROM_SERVER);
        } else if (result.getError() != null) {
            throw new XMPPException(result.getError());
        }
        return result;
    }

    static public Packet getReply(Connection connection, Packet packet)
            throws XMPPException {
        return getReply(connection, packet,
                SmackConfiguration.getPacketReplyTimeout());
    }
}