# File lib/sup/mbox/ssh-file.rb, line 95
  def initialize host, fn, ssh_opts={}
    @buf = Buffer.new
    @host = host
    @fn = fn
    @ssh_opts = ssh_opts
    @file_size = nil
    @offset = 0
    @say_id = nil
    @shell = nil
    @shell_mutex = nil
    @buf_mutex = Mutex.new
  end