net.dv8tion.jda.core.handle.VoiceServerUpdateHandler.java Source code

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Here is the source code for net.dv8tion.jda.core.handle.VoiceServerUpdateHandler.java

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/*
 *     Copyright 2015-2017 Austin Keener & Michael Ritter & Florian Spie
 *
 * 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 net.dv8tion.jda.core.handle;

import net.dv8tion.jda.core.audio.AudioConnection;
import net.dv8tion.jda.core.audio.AudioWebSocket;
import net.dv8tion.jda.core.entities.Guild;
import net.dv8tion.jda.core.entities.impl.JDAImpl;
import net.dv8tion.jda.core.managers.impl.AudioManagerImpl;
import net.dv8tion.jda.core.requests.WebSocketClient;
import org.json.JSONObject;

public class VoiceServerUpdateHandler extends SocketHandler {
    public VoiceServerUpdateHandler(JDAImpl api) {
        super(api);
    }

    @Override
    protected Long handleInternally(JSONObject content) {
        final long guildId = content.getLong("guild_id");
        api.getClient().getQueuedAudioConnectionMap().remove(guildId);

        if (api.getGuildLock().isLocked(guildId))
            return guildId;

        if (content.isNull("endpoint")) {
            //Discord did not provide an endpoint yet, we are to wait until discord has resources to provide
            // an endpoint, which will result in them sending another VOICE_SERVER_UPDATE which we will handle
            // to actually connect to the audio server.
            return null;
        }

        String endpoint = content.getString("endpoint");
        String token = content.getString("token");
        Guild guild = api.getGuildMap().get(guildId);
        if (guild == null)
            throw new IllegalArgumentException(
                    "Attempted to start audio connection with Guild that doesn't exist! JSON: " + content);
        String sessionId = guild.getSelfMember().getVoiceState().getSessionId();
        if (sessionId == null)
            throw new IllegalArgumentException(
                    "Attempted to create audio connection without having a session ID. Did VOICE_STATE_UPDATED fail?");

        //Strip the port from the endpoint.
        endpoint = endpoint.replace(":80", "");

        AudioManagerImpl audioManager = (AudioManagerImpl) guild.getAudioManager();
        synchronized (audioManager.CONNECTION_LOCK) //Synchronized to prevent attempts to close while setting up initial objects.
        {
            if (audioManager.isConnected())
                audioManager.prepareForRegionChange();
            if (!audioManager.isAttemptingToConnect()) {
                WebSocketClient.LOG.debug(
                        "Received a VOICE_SERVER_UPDATE but JDA is not currently connected nor attempted to connect "
                                + "to a VoiceChannel. Assuming that this is caused by another client running on this account. Ignoring the event.");
                return null;
            }

            AudioWebSocket socket = new AudioWebSocket(audioManager.getListenerProxy(), endpoint, api, guild,
                    sessionId, token, audioManager.isAutoReconnect());
            AudioConnection connection = new AudioConnection(socket, audioManager.getQueuedAudioConnection());
            audioManager.setAudioConnection(connection);
            socket.startConnection();

            return null;
        }
    }
}