[This message was posted by Sri Thayaparan of Millennium IT <[email protected]> to the "FAST Protocol" discussion forum at http://fixprotocol.org/discuss/46. You can reply to it on-line at http://fixprotocol.org/discuss/read/9d256518 - PLEASE DO NOT REPLY BY MAIL.]
Hi, Could somebody please help me get the FIX_over_FAST_Specification? http://www.fixprotocol.org/documents/2786/FIX_over_FAST_Specification_draft.doc It requests authorization in the portal. Is there any other way to access this document. Rgds, Thaya. > The primary reason for retiring the implicit operator was that it didn't > fit well with the core concept of removing redundancies by capitalizing > on data affinities. Additionally, implying the length or checksum are > things that can be done in the application layer. > > When using FAST to send market data over a multicast transport there is > little benefit to sending checksum and body length since it is unlikely > that the data will be corrupted in transmission - especially when the > encoding state spans only a single packet. > > It's a different story when using a FIX session over FAST and the > encoding state spans the entire session. Checksum and body length are > excellent safeguards for determining that the decoded result matches the > original unencoded message. See the FIX over FAST Recommendation at the > following link which does a good job illustrating the inherent riskiness > of sending encoded data - and how Checksum can be used to reduce that > risk. http://www.fixprotocol.org/documents/2786/FIX_over_FAST_Specifica- > tion_draft.doc > > > At the FAST summit in April, there was mention of further compressing > > FIX by not sending FIX's length and checksum fields. Now that the > > implicit operator has been retired, does this mean that length and > > checksum elimination was too risky in practice? [You can unsubscribe from this discussion group by sending a message to mailto:[email protected]] --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Financial Information eXchange" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/FIX-Protocol?hl=en -~----------~----~----~----~------~----~------~--~---
