Re: [Quickfix-developers] Question regarding Values of BeginString

[Christoph J. <chr...@fo...>]

Hi,

Starting with FIX5.0 the transport layer FIXT1.1 was used as BeginString. Using this, you could send application messages in different FIX versions via the same FIX session. That would be specified by tag (Default)ApplVerID.

Hope that helps.
Cheers
Chris

--
Christoph John
Software Engineering

[cid:image001.png@01DCA57C.F5496D30]
Foconis Trading GmbH
Oppenhoffallee 103
52066 Aachen

Web: https://foconis.com<https://foconis.com/>
E-Mail: chr...@fo...<mailto:chr...@fo...>
Tel.: +49 241 557080 28 / Zentrale-0

Geschäftsführer: Peter Kretzmann, George Macdonald
Amtsgericht Hamburg: HRB 46346 | USt-IDNr.: DE118680003
Unsere Hinweise zum Datenschutz sind hier zu entnehmen (Artikel 13, 14 und 21 EU-DSGVO):
https://group.foconis.com/datenschutz

From: David Paz <dav...@gm...>
Sent: 23 February 2026 22:44
To: qui...@li...
Subject: [Quickfix-developers] Question regarding Values of BeginString

[You don't often get email from dav...@gm...<mailto:dav...@gm...>. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ]

QuickFIX Documentation: http://www.quickfixengine.org/quickfix/doc/html/

_______________________________________________
Quickfix-developers mailing list
Qui...@li...<mailto:Qui...@li...>
https://lists.sourceforge.net/lists/listinfo/quickfix-developers