Bot gets disconnected from the player websocket with error 'Internal Error.'

[DelxHQ]

I am completely unsure if this is an erela issue at all but I am experiencing an issue where music would just stop playing randomly. I get no errors or anything whenever this happens. Lavalink still sends events and still play's music according to the logs, though I think my bot just stops sending voice data to Discord.

The only way to have it send data again, is to destroy the player and create it again.

[parnavh]

It happens with me when I server deafen or mute the bot, although pausing and playing the bot sometimes fixes it

[Misly16]

Can reproduce this when I server deafen/mute the bot

[viztea]

The best way of handling this is to pause/resume depending on the value of the mute field inside the VOICE_STATE_UPDATE data. As for server deafening this is probably an issue with erela.js, I'll see what I can do 👌

[iwa]

i did manual handling for server mute and server deafen to pause and resume the music, but it still happens to me :/
so it might be something else idk
also lil tip, try to also handle pause/resume whenever the voice channel is updated, cause if someone changes the region of the channel for whatever reason, it'll also put the bot in this weird stopped-music state

[txj-xyz]

Just do something like this for both serverMute and serverDeafen for the <Client>#VoiceStateUpdate event

if (newState.serverMute == true && oldState.serverMute == false && oldState.member.id == client.user.id)
  return player.pause(true);
if (newState.serverMute == false && oldState.serverMute == true && oldState.member.id == client.user.id)
  return player.pause(false);

[DelxHQ]

I believe this issue is due to something closing the websocket to the player. I've been logging the socketClosed event and have been getting error codes from it, and I mean a lot of errors.

[DelxHQ]

Also note that my issue isn't to do with any of the comments above. My issue happens completely randomly without ANY interaction with the bot.

[DelxHQ]

I believe this issue is due to something closing the websocket to the player. I've been logging the socketClosed event and have been getting error codes from it, and I mean a lot of errors.

Can confirm it's the websocket being killed with code 4000 and reason being Internal Error.

[iwa]

alright so i've been doing some testing lately, and it seems that I can no longer run into this issue

I'm now using the voice-packet-improvements branch, and no issue so far
It has been running locally for hours now, and with logging socketClosed enabled (no logs generated from it so far)

config:

• macbook pro 13" m1
• java 13 (azul arm build)
• node 16.9.1
• djs 13.3.1
• lavalink 3.4

seems that the changes done in #142 are working great so far

edit: i'm gonna test it for a few hours on my server running debian 11 and lavalink through docker, will post an update here to keep y'all in touch

[viztea]

Please test the new build branch, I've merged #142.

[iwa]

alright so, feedback few days later, my test has been a success even on my server (debian 11, lavalink through docker), no issue so far, and no errors from socketClosed, so #142 seems to really have fixed this issue

if you run into this issue, before posting, try to implement automatic play/pause on : server mute, server deafen, voice channel update, VC kick

sharing with y'all my code for that in TS, not sure its optimal tho:

Bot.on('voiceStateUpdate', async (oldState, newState) => {
    let channel = oldState.channel;
    if (!channel) return; // not parsing when the bot is connecting to a VC

    // If the bot is disconnected from a VC, destroys the player
    if (oldState.id === Bot.user.id && newState.id === Bot.user.id) {
        if (!newState.channel) {
            let player = Bot.music.players.get(oldState.guild.id);

            if (player)
                player.destroy();
        }
    }

    // If the bot is server muted, or server demuted, then pause / resume the music
    // Thanks @txj-xyz for the code
    if (newState.serverMute == true && oldState.serverMute == false && oldState.member.id == Bot.user.id) {
        let player = Bot.music.players.get(oldState.guild.id);
        player.pause(true);
        return;
    }

    if (newState.serverMute == false && oldState.serverMute == true && oldState.member.id == Bot.user.id) {
        let player = Bot.music.players.get(oldState.guild.id);
        player.pause(false);
        return;
    }

    // NOTE: not parsing server deafen here but it seems to be working without it, tho my bot is always self-deafen so it may break if not?
});

// VC Region Update
Bot.on('channelUpdate', async (oldChannel: VoiceChannel, newChannel: VoiceChannel) => {
    if (oldChannel.type === 'GUILD_VOICE' && newChannel.type === 'GUILD_VOICE') {
        let player = Bot.music.players.get(newChannel.guild.id);

        if (player) {
            if (player.voiceChannel === newChannel.id) {
                if (player.playing && !player.paused) {
                    player.pause(true);
                    setTimeout(() => {
                        player.pause(false);
                    }, 500); // Arbitrary cooldown, 0.5s seems to be working fine on my server but you might change this to a higher value if you're experiencing lag (haven't found a better way to do it yet)
                }
            }
        }
    }
});

[viztea]

Awesome, if everyone else reports the same thing I'll close this issue 👌🏼