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FIXP - FIX performance session layer specification
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[04PointToPointSessionProtocol.md] 'Sequence is too low' case is not explained #40

Closed ujos closed 6 years ago

ujos commented 6 years ago

In the FIXT specification stated:

Whenever possible it is recommended that FIX engine attempt to send a Logout message with a text message of “MsgSeqNum too low, expecting X but received Y”

Does FIXP specification cover this case?

donmendelson commented 6 years ago

For a sequence number that has already been received, the description of Idempotent flow states:

If a transaction has already been applied, a duplicate request should be silently dropped.

ujos commented 6 years ago

In FIXT "SeqNum too low" case meant that someone tried to establish connection from another application.

As far as each session in FIXP is identified by unique identifier which is generated randomly, that is not a issue anymore.

Thanks