Changes
This page documents the changes that have been made to the specification
from version to version. Note that it is the document version, not the
protocol version. When a new protocol version is frozen, it will be noted
in this log.
A * indicates that the change has not yet been rolled into the text.
Version 2.3 22-Oct-99
Added the "Will Message" fields to the CONNECT
message, with details in the Variable Header
and Payload sections.
Clarified the difference between TNCOMP Request
in CONNECT, and TNCOMP Response in CONNACK.
In the CONNECT section,
clarified the expected client behaviour in the event of a CONNACK not being
received.
Version 2.2 19-Oct-99
Message ID and Keep Alive timer in the Variable
Header have gone back to be network ordered - i.e. Big Endian, i.e.
MSB, LSB.
Version 2.1 16-Jul-99
A slight change to the encoding algorithm for the extensible remaining
length field in the Fixed Header.
Version 2.0 2-Jul-99
Protocol version 2
Substantial changes: see Protocol Versions
section for details.
Version 1.7 27-Mar-99
* Message IDs will never have the value 0 - it is defined as an invalid
message ID.
Version 1.6 26-Mar-99
First release of protocol version 1.
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Last Modified: 22-October-99