rbuf_fill

# File lib/bundler/vendor/net-http-persistent/lib/net/http/faster.rb, line 12
  def rbuf_fill
    if @io.respond_to? :read_nonblock then
      begin
        @rbuf << @io.read_nonblock(65536)
      rescue Errno::EWOULDBLOCK, Errno::EAGAIN => e
        retry if IO.select [@io], nil, nil, @read_timeout
        raise Timeout::Error, e.message
      end
    else # SSL sockets do not have read_nonblock
      timeout @read_timeout do
        @rbuf << @io.sysread(65536)
      end
    end
  end