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Re: PMAP decoding issues
Declan Caulfield / Getco LLC
9 Apr 2009 1:25AM ET I haven't used OpenFAST but to me it looks like the PMAP bytes are 0x7CFC => PMAP = 11111001111100.
c0 f8 is the reset and that is followed by pmap and TID 0x84.
Hope this helps.
> Thanks to all. I couldn't solve this issue yet. The exception message
> that OpenFast is throwing is:
>
> org.openfast.error.FastException: The presence map BitVector [00000110
> 00001101 10100000] has too many bits for the group
> SingleLegReferenceInformation.
>
> So I'm assuming that the api is detecting a SingleLegReferenceInfo
> message ( TID 4) but suddenly something wrong happens with the pmap.
>
>
> These are the first 32bytes of the message in hex:
>
> c0 81 23 38 16 80 81 02 31 7a c5 c0 f8 7f fc 84 80 c0 04 5d d4 b1 01 6c
> 1d ca 4e 4f 56 ce 4f d0
>
>
> Can anybody guess what's wrong ?
>
> > Assuming that OpenFAST is a reasonable application that allows a
> > receiver application to decode data stream against a set of templates
> > in my opinion the problem is most likely with incorrect templates.
> >
> > For your information EnBS utilizes maximum 12 PMAP bits in its current
> > version.
> >
> > Regards, Darshan
> > > There are a number of ways in which the pmap can have an excess
> > > number of bits. That is, more bits than are utilized by the field
> > > operators of the template. In an otherwise functional environment a
> > > possible reason can be that the template used for decoding is
> > > different from the one used for encoding. Other possibilities
> > > include a broken encoder or decoder.
> > >
> > > /David
> > >
> > > > Hi. I don't know if this forum is the appropriate place to post
> > > > this. I'm kinda lost with some openfast issues. I inserted into
> > > > the template the FASTRESET message. That allowed me to decode
> > > > messages other than the first VERSION msg. EBS is sending a
> > > > FASTRESET in between messages. Whenever I get a freset I'm
> > > > reseting the openfast context object. My main problem now is with
> > > > an openfast exception. I'm receiving a Single Leg Reference
> > > > message, some of them are ok and others throw:
> > > >
> > > > org.openfast.error.FastException: An error occurred while decoding
> > > > SingleLegReferenceInformation Caused by:
> > > > org.openfast.error.FastException: The presence map BitVector
> > > > [00111110 00001000 11110101] has too many bits for the group
> > > > SingleLegReferenceInformation
> > > >
> > > > How is possible for the Pmap to contain more bits that the decoder
> > > > is expecting? Can you help me? Openfast people doesn't seem to
> > > > read the mailing list that much.
> > > >
> > > >
> > > > Thank you. Augusto.
Re: PMAP decoding issues
Declan Caulfield / Getco LLC 9 Apr 2009 1:25AM ET
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