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.

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)

Parameters:

  • channel (Channel) —

    The voice channel to connect to

  • bot (Bot) —

    The regular bot to which this vWS is bound

  • token (String) —

    The authentication token which is also used for REST requests

  • session (String) —

    The voice session ID Discord sends over the regular websocket

  • endpoint (String) —

    The endpoint URL to connect to



115
116
117
118
119
120
121
122
123
124
125
 
# File 'lib/discordrb/voice/network.rb', line 115

def initialize(channel, bot, token, session, endpoint)
  @channel = channel
  @bot = bot
  @token = token
  @session = session

  @endpoint = endpoint
  @endpoint.gsub!(':80', '')

  @udp = VoiceUDP.new
end

Instance Attribute Details

#udp ⇒ VoiceUDP (readonly)

Returns the UDP voice connection over which the actual audio data is sent.

Returns:

  • (VoiceUDP) —

    the UDP voice connection over which the actual audio data is sent.



107
108
109
 
# File 'lib/discordrb/voice/network.rb', line 107

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 -> | | | ...



234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
 
# File 'lib/discordrb/voice/network.rb', line 234

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)
end

#destroy ⇒ Object

Disconnects the websocket and kills the thread



252
253
254
 
# File 'lib/discordrb/voice/network.rb', line 252

def destroy
  @thread.kill if @thread
end

#send_heartbeat ⇒ Object

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



163
164
165
166
167
168
169
170
171
 
# File 'lib/discordrb/voice/network.rb', line 163

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

  @client.send({
    op: 3,
    d: nil
  }.to_json)
end

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

Send a connection init packet (op 0)

Parameters:

  • server_id (Integer) —

    The ID of the server to connect to

  • bot_user_id (Integer) —

    The ID of the bot that is connecting

  • session_id (String) —

    The voice session ID

  • token (String) —

    The Discord authentication token



132
133
134
135
136
137
138
139
140
141
142
 
# File 'lib/discordrb/voice/network.rb', line 132

def send_init(server_id, bot_user_id, session_id, token)
  @client.send({
    op: 0,
    d: {
      server_id: server_id,
      user_id: bot_user_id,
      session_id: session_id,
      token: token
    }
  }.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

Parameters:

  • value (true, false) —

    Whether or not the bot should be speaking



175
176
177
178
179
180
181
182
183
184
 
# File 'lib/discordrb/voice/network.rb', line 175

def send_speaking(value)
  @bot.debug("Speaking: #{value}")
  @client.send({
    op: 5,
    d: {
      speaking: value,
      delay: 0
    }
  }.to_json)
end

#send_udp_connection(ip, port, mode) ⇒ Object

Sends the UDP connection packet (op 1)

Parameters:

  • ip (String) —

    The IP to bind UDP to

  • port (Integer) —

    The port to bind UDP to

  • mode (Object) —

    Which mode to use for the voice connection



148
149
150
151
152
153
154
155
156
157
158
159
160
 
# File 'lib/discordrb/voice/network.rb', line 148

def send_udp_connection(ip, port, mode)
  @client.send({
    op: 1,
    d: {
      protocol: 'udp',
      data: {
        address: ip,
        port: port,
        mode: mode
      }
    }
  }.to_json)
end