891: def self::open_datagram_socket address, port, handler=nil, *args
892: klass = if (handler and handler.is_a?(Class))
893: raise ArgumentError, 'must provide module or subclass of EventMachine::Connection' unless Connection > handler
894: handler
895: else
896: Class.new( Connection ) {handler and include handler}
897: end
898:
899: arity = klass.instance_method(:initialize).arity
900: expected = arity >= 0 ? arity : -(arity + 1)
901: if (arity >= 0 and args.size != expected) or (arity < 0 and args.size < expected)
902: raise ArgumentError, "wrong number of arguments for #{klass}#initialize (#{args.size} for #{expected})"
903: end
904:
905: s = open_udp_socket address, port
906: c = klass.new s, *args
907: @conns[s] = c
908: block_given? and yield c
909: c
910: end