LiveJournal Protocol Versions body<= ver attribute; version 0 is implicit if the client does not send the ver attribute. Currently there are two versions of the protocol, and the Unicode-enabled server code supports both of them. p?>

• Version 0
  If a client does not send a ver key on a request, it assumed to support protocol Version 0. In protocol Version 0, textual information transmitted from or to the server is always assumed to be a stream of 8-bit bytes, not necessarily ASCII, but without any guarantee that the non-ASCII bytes are presented in any particular encoding.
• Version 1
  Version 1 differs from Version 0 only by imposing additional requirements on the text transmitted through requests and responses; there aren't any changes in protocol modes. The additional requirements are that in a Version 1 request, the client must transmit all textual information as a stream of Unicode data encoded in UTF-8; the server must respond to Version 1 requests with Version 1 responses; in such Version 1 responses, the server must also transmit all textual information encoded in UTF-8; and the client must expect that and handle such responses correctly. In other words, all information transmitted via protocol when Version 1 is used is always encoded in UTF-8. UTF-8 is a representation of Unicode in a bytestream format compatible with ASCII. See the Unicode Consortium website for more information on Unicode and UTF-8.

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