Class: LegoEv3::TCPServer

Inherits:
Object
  • Object
show all
Defined in:
lib/connection/tcp_server.rb

Instance Method Summary collapse

Constructor Details

#initialize(port) ⇒ TCPServer

Returns a new instance of TCPServer.



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# File 'lib/connection/tcp_server.rb', line 6

def initialize(port)
  @port = port
  @local_connection = LegoEv3::LocalConnection.new
end

Instance Method Details

#close ⇒ Object 



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# File 'lib/connection/tcp_server.rb', line 46

def close
  @server.close if @server
  @server = nil

  @local_connection.close if @local_connection
  @local_connection = nil
end

#open ⇒ Object 



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# File 'lib/connection/tcp_server.rb', line 11

def open
  @server = ::TCPServer.new(@port)

  hostname = `hostname`.strip

  puts "Started TCP server on #{hostname}:#{@port}."
  puts "Waiting for clients..."
  puts "Press CTRL+C to interrupt at any time."

  loop do
    client = @server.accept
    client.setsockopt(Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1)
    puts "Client connected."

    while raw_request = client.gets
      request = Marshal.load(Base64.strict_decode64(raw_request.rstrip))
      puts "Received: #{request}"

      receive_commands(request).each do |(verb, path, value, handle)|
        @local_connection.send(verb.to_sym, path, value, handle) do |response|
          puts "Sending: #{response}"
          client.puts(Base64.strict_encode64(Marshal.dump(response)))
        end
      end

      @local_connection.flush
    end

    client.close
    puts "Client closed."
  end
rescue SystemExit, Interrupt
  close
end