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Subject:
Openbook Ultra feed questions
Body:
[quote]Posted By n/a on 07/11/2008 4:42 PM What exactly is sent in response to a Book Refresh Refresh? Is it just a Full Update message (228)? Also, according to the section 4.2 of the OpenBook Ultra 1.4 spec, "Any Update Message can span multiple messages and/or multicast packets." Is this related to the "LinkFlag" in the header? The documentation on that fields says "This field applies only to Refresh Retransmissions...For all other messages...this field is always set to 0." How are these two points reconciled? If the LinkFlag is not used, then what does it mean for a message to span multiple messages or packets? Does it simply mean that it may take more than one Update Message to provide all of the price points for a given symbol? Thanks[/quote]
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