mongo-ruby-driver/lib/mongo/constants.rb

module Mongo
  module Constants
    OP_REPLY        = 1   
    OP_MSG          = 1000 
    OP_UPDATE       = 2001 
    OP_INSERT       = 2002
    OP_QUERY        = 2004
    OP_GET_MORE     = 2005
    OP_DELETE       = 2006
    OP_KILL_CURSORS = 2007

    OP_QUERY_SLAVE_OK          = 4
    OP_QUERY_NO_CURSOR_TIMEOUT = 16
  end
end