Class: Discordrb::Voice::VoiceWS

Inherits:
Object
  • Object
show all
Defined in:
lib/discordrb/voice/network.rb

Overview

Represents a websocket client connection to the voice server. The websocket connection (sometimes called vWS) is used to manage general data about the connection, such as sending the speaking packet, which determines the green circle around users on Discord, and obtaining UDP connection info.

Constant Summary collapse

VOICE_GATEWAY_VERSION =

The version of the voice gateway that's supposed to be used.

8

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(channel, bot, token, session, endpoint) ⇒ VoiceWS

Makes a new voice websocket client, but doesn't connect it (see #connect for that)



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# File 'lib/discordrb/voice/network.rb', line 176

def initialize(channel, bot, token, session, endpoint)
  raise 'libsodium is unavailable - unable to create voice bot! Please read https://github.com/shardlab/discordrb/wiki/Installing-libsodium' unless LIBSODIUM_AVAILABLE

  @channel = channel
  @bot = bot
  @token = token
  @session = session

  @endpoint = endpoint

  @udp = VoiceUDP.new
end

Instance Attribute Details

#udp ⇒ VoiceUDP (readonly) 



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# File 'lib/discordrb/voice/network.rb', line 168

def udp
  @udp
end

Instance Method Details

#connect ⇒ Object

Communication goes like this: me discord | | websocket connect -> | | | | <- websocket opcode 2 | | UDP discovery -> | | | | <- UDP reply packet | | websocket opcode 1 -> | | | ...



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# File 'lib/discordrb/voice/network.rb', line 319

def connect
  # Connect websocket
  @thread = Thread.new do
    Thread.current[:discordrb_name] = 'vws'
    init_ws
  end

  @bot.debug('Started websocket initialization, now waiting for UDP discovery reply')

  # Now wait for opcode 2 and the resulting UDP reply packet
  ip, port = @udp.receive_discovery_reply
  @bot.debug("UDP discovery reply received! #{ip} #{port}")

  # Send UDP init packet with received UDP data
  send_udp_connection(ip, port, @udp_mode)

  @bot.debug('Waiting for op 4 now')

  # Wait for op 4, then finish
  sleep 0.05 until @ready
end

#destroy ⇒ Object

Disconnects the websocket and kills the thread



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# File 'lib/discordrb/voice/network.rb', line 342

def destroy
  @heartbeat_running = false
end

#send_heartbeat ⇒ Object

Send a heartbeat (op 3), has to be done every @heartbeat_interval seconds or the connection will terminate



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# File 'lib/discordrb/voice/network.rb', line 225

def send_heartbeat
  millis = Time.now.strftime('%s%L').to_i
  @bot.debug("Sending voice heartbeat at #{millis}")

  send_opcode(
    Opcodes::HEARTBEAT,
    {
      t: millis,
      seq_ack: @seq
    }
  )
end

#send_init(server_id, bot_user_id, session_id, token) ⇒ Object

Send a connection init packet (op 0)



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# File 'lib/discordrb/voice/network.rb', line 194

def send_init(server_id, bot_user_id, session_id, token)
  send_opcode(
    Opcodes::IDENTIFY,
    {
      server_id: server_id,
      user_id: bot_user_id,
      session_id: session_id,
      token: token
    }
  )
end

#send_opcode(opcode, data) ⇒ Object 



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# File 'lib/discordrb/voice/network.rb', line 251

def send_opcode(opcode, data)
  @bot.debug("Sending voice opcode #{opcode} with data: #{data}")
  @client.send({
    op: opcode,
    d: data
  }.to_json)
end

#send_speaking(value) ⇒ Object

Send a speaking packet (op 5). This determines the green circle around the avatar in the voice channel



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# File 'lib/discordrb/voice/network.rb', line 240

def send_speaking(value)
  @bot.debug("Speaking: #{value}")
  send_opcode(
    Opcodes::SPEAKING,
    {
      speaking: value,
      delay: 0
    }
  )
end

#send_udp_connection(ip, port, mode) ⇒ Object

Sends the UDP connection packet (op 1)



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# File 'lib/discordrb/voice/network.rb', line 210

def send_udp_connection(ip, port, mode)
  send_opcode(
    Opcodes::SELECT_PROTOCOL,
    {
      protocol: 'udp',
      data: {
        address: ip,
        port: port,
        mode: mode
      }
    }
  )
end