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FAST Protocol
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Re: FAST Complaints
Rolf Andersson / Pantor Engineering
4 Feb 2010 4:39AM ETJust to add some information for the forum readers that are planning to implement an encoder and/or decoder:
> The exception is for the constant operator. For this operator the
> data is NEVER sent down the wire, and the presence map bit for this
> one case indicates whether the field is included in the application
> data. This overloading of the meaning of the presence map bit,
> while certainly understandable, may also be a source of the original
> poster's confusion.
There is another case where the pmap is used to indicate presence. Optional groups also use a pmap bit. Obviously, in this case the contents of the group will appear in the stream if its pmap bit is set (section 10.5.1)
/Rolf
Re: FAST Complaints
Rolf Andersson / Pantor Engineering 4 Feb 2010 4:39AM ET
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