class Listen::TCP::Broadcaster

Public Class Methods

new(host, port) click to toggle source

Initializes a Celluloid::IO-powered TCP-broadcaster

@param [String] host to broadcast on @param [String] port to broadcast on

Note: Listens on all addresses when host is nil

# File lib/listen/tcp/broadcaster.rb, line 17
def initialize(host, port)
  @sockets = []
  _log :debug, "Broadcaster: starting tcp server: #{host}:#{port}"
  @server = TCPServer.new(host, port)
rescue
  _log :error, "Broadcaster.initialize: #{$!.inspect}:#{$@.join("\n")}"
  raise
end

Public Instance Methods

broadcast(payload) click to toggle source

Broadcasts given payload to all connected sockets

# File lib/listen/tcp/broadcaster.rb, line 42
def broadcast(payload)
  active_sockets = @sockets.select do |socket|
    _unicast(socket, payload)
  end
  @sockets.replace(active_sockets)
end
finalize() click to toggle source

Cleans up sockets and server

# File lib/listen/tcp/broadcaster.rb, line 32
def finalize
  @sockets.map(&:close) if @sockets
  @sockets = nil

  return unless @server
  @server.close
  @server = nil
end
run() click to toggle source

Continuously accept and handle incoming connections

# File lib/listen/tcp/broadcaster.rb, line 50
def run
  while socket = @server.accept
    @sockets << socket
  end
rescue Celluloid::Task::TerminatedError
  _log :debug, "TCP adapter was terminated: #{$!.inspect}"
rescue
  _log :error, "Broadcaster.run: #{$!.inspect}:#{$@.join("\n")}"
  raise
end
start() click to toggle source

Asynchronously start accepting connections

# File lib/listen/tcp/broadcaster.rb, line 27
def start
  async.run
end

Private Instance Methods

_log(type, message) click to toggle source
# File lib/listen/tcp/broadcaster.rb, line 63
def _log(type, message)
  Celluloid::Logger.send(type, message)
end
_unicast(socket, payload) click to toggle source
# File lib/listen/tcp/broadcaster.rb, line 67
def _unicast(socket, payload)
  socket.write(payload)
  true
rescue IOError, Errno::ECONNRESET, Errno::EPIPE
  _log :debug, "Broadcaster failed: #{socket.inspect}"
  false
end