Class: Druzy::Upnp::Ssdp

Inherits:
Object
  • Object
show all
Defined in:
lib/druzy/upnp/ssdp.rb

Constant Summary collapse

@@port = 
1900
@@host = 
"239.255.255.250"

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Ssdp

Returns a new instance of Ssdp.



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# File 'lib/druzy/upnp/ssdp.rb', line 14

def initialize
  
end

Instance Method Details

#search(st = "ssdp:all", delay = 10) ⇒ Object

search only device (not service)



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# File 'lib/druzy/upnp/ssdp.rb', line 19

def search(st = "ssdp:all", delay = 10)
  message = <<-MESSAGE
M-SEARCH * HTTP/1.1\r
HOST: #{@@host}:#{@@port}\r
MAN: "ssdp:discover"\r
MX: #{delay}\r
ST: #{st}\r
USER-AGENT: #{RbConfig::CONFIG["host_os"]}/ UPnP/1.1 ruby-druzy-upnp/#{Druzy::Upnp::VERSION}\r
  MESSAGE
  
  s = UDPSocket.new
  s.send(message,0,@@host,@@port)
  devices = []
  begin
    Timeout::timeout(delay) do
      loop do
        message = s.recv(4196)
        location = message.split("\n").reject{|line| line==nil || line["LOCATION"]==nil}.first
        location = location[location.index(" ")+1..location.size-2]
        if !devices.include?(location)
          devices << location
          if block_given?
            yield UpnpDevice.new(:location => location)
          end
        end
      end
    end
  rescue
    
  ensure
    s.close
  end
  
end