|
FAST Protocol
< Previous Next >
swx MDI decoding issue
Michael Wong / Chi-X Global Technology
11 May 2009 10:25PM ET Hi All,
I am developing swx feed handler and I have an issue related to decode the FAST data from MDI.
msg:
0000005ah: 00 C6 76 C0 E4 53 57 58 47 52 4F 55 50 2D 4D 44 ;
0000006ah: 49 2E 4D 30 B1 4E 92 32 30 30 38 30 36 32 33 2D ;
0000007ah: 30 33 3A 35 30 3A 32 33 2E 36 31 B1 81 43 48 30 ;
0000008ah: 30 30 34 36 32 36 33 30 B2 81 7B C0 CA 80 80 41 ;
0000009ah: 42 51 B5 80 80 80 80 81 ;
I try to decode it manually.
block size = 00 C6
PMAP = 76 C0 (01110110 11000000)
TID = E4(100)
49 = 53 57 58 47 52 4F 55 50 2D 4D 44 49 2E 4D 30 B1
34 = 4E 92
33 = 32 30 30 38 30 36 32 33 2D 30 33 3A 35 30 3A 32 33 2E 36 31 B1
1021 = 81
48 = 43 48 30 30 30 34 36 32 36 33 30 B2
268 = 81
7B C0 <--- ?
269 = CA ?
270 = 80
271 = 80
336 = 41 42 51 B5
346 = 80
6566 = 80
1023 = 80
6567 = 80
83 = 81
I found 7B C0 is appeared between tag 268 and 269. However, I don't know what it is about. Also I think there is something wrong with the PMAP. e.g the last tag 83, I think the PMAP should be set for this tag.
Thanks in advance
Michael
swx MDI decoding issue
Michael Wong / Chi-X Global Technology 11 May 2009 10:25PM ET
|
@FIXProtocol
