Class: Discovery::Util::UDP::RX

Inherits:
Xceiver
  • Object
show all
Defined in:
lib/discovery/util/udp.rb

Instance Attribute Summary

Attributes inherited from Xceiver

#group, #local_ip, #local_port, #port, #socket

Instance Method Summary collapse

Methods inherited from Xceiver

#close, #initialize, new, #open

Constructor Details

This class inherits a constructor from Discovery::Util::UDP::Xceiver

Instance Method Details

#configure ⇒ Object 



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# File 'lib/discovery/util/udp.rb', line 71

def configure
  # Add membership to the multicast group
  @socket.setsockopt Socket::IPPROTO_IP,
                     Socket::IP_ADD_MEMBERSHIP,
                     IPAddr.new(@group).hton + IPAddr.new("0.0.0.0").hton
  # Don't prevent future listening peers on the same machine
  @socket.setsockopt(Socket::SOL_SOCKET,
                     Socket::SO_REUSEADDR,
                     [1].pack('i')) unless @selfish
  # Bind the socket to the specified port or any open port on the machine
  @socket.bind Socket::INADDR_ANY, @port
end

#gets ⇒ Object 



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# File 'lib/discovery/util/udp.rb', line 84

def gets
  msg, addrinfo = @socket.recvfrom(UDP.max_length)
  msg.instance_variable_set :@source, addrinfo[3].to_s+':'+addrinfo[1].to_s
  class << msg;  attr_reader :source;  end
  msg
end

#test!(message = "#{self}.test!") ⇒ Object 



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# File 'lib/discovery/util/udp.rb', line 91

def test!(message="#{self}.test!")
  tx = UDP::TX.new @group, @port
  rx = self
  
  outer_thread = Thread.current
  passed = false
  thr = Thread.new do
    rx.gets
    passed = true
    outer_thread.wakeup
  end
  Thread.pass
  
  tx.puts message
  sleep 1 if thr.status
  thr.kill
  tx.close
  
  passed
end