>>> With this protocol extension, two things are changed: >>> >>> - The ReadyForQuery message sends back the current LSN. >> If other protocol extension X tries to add something to the >> ReadyForQuery message too, what would happen? > > I think one would have to define that somehow. If it's useful, the > additional fields of both extensions could be appended, in some > defined order. But this is an interesting question to think about.
I think this kind of extension, which adds new filed to an existing message type, should be implemented as v4 protocol. Best reagards, -- Tatsuo Ishii SRA OSS K.K. English: http://www.sraoss.co.jp/index_en/ Japanese:http://www.sraoss.co.jp
