Class: GPS_PVT::SUPL_Client

Inherits:
Object
  • Object
show all
Includes:
UPL
Defined in:
lib/gps_pvt/supl.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(host, opts = {}) ⇒ SUPL_Client

Returns a new instance of SUPL_Client.



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# File 'lib/gps_pvt/supl.rb', line 14

def initialize(host, opts = {})
  @host = host
  @opts = {
    :port => 7275,
    :debug => 0,
    :protocol => [:lpp, :rrlp],
    :req_data => [:ephemeris], # :almanac
    :timeout => 60, # [sec]
  }.merge(opts)
end

Instance Attribute Details

#opts ⇒ Object

Returns the value of attribute opts.



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# File 'lib/gps_pvt/supl.rb', line 12

def opts
  @opts
end

Instance Method Details

#get_assisted_data ⇒ Object 



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# File 'lib/gps_pvt/supl.rb', line 25

def get_assisted_data
  begin
    timeout = @opts[:timeout]
    host = timeout ? Resolv::getaddress(@host).to_s : @host  
    @socket = TCPSocket::new(host, @opts[:port])
    if @opts.include?(:ssl) ? @opts[:ssl] : (@opts[:port] == 7275) then
      @socket = OpenSSL::SSL::SSLSocket::new(@socket)
      @socket.connect
    end
    @socket.define_singleton_method(:read){|bytes|
      buf = String::new
      while (rem = (bytes - buf.size)) > 0
        begin
          buf << read_nonblock(rem)
        rescue IO::WaitReadable
          break unless IO.select([self], nil, nil, timeout)
        end
      end
      buf
    } if timeout
    send_supl_start
    recv_supl_response
    send_supl_pos_init
    recv_supl_pos
  ensure
    @socket.close unless @socket.closed?
  end
end