SNAC(04,0B)/CH2  CLI_ICBM_SENDxACK_CH2 

Client send this snac as reply to SNAC(04,07)/CH2. See also common description for SNAC(04,0B).

 00 04   word   SNAC family
 00 0B   word   SNAC subtype
 00 00   word   SNAC flags
 xx xx xx xx   dword   SNAC request-id
 xx xx xx xx
 xx xx xx xx
  qword   msg-id cookie
 
 00 02   word   message channel
 xx   byte   screenname string length
 xx ..   string   screenname string
 00 03   word   reason code (2 - busted payload, 3 - channel specific)
 Following contents is specific for capability, which was used in message with the same msg-id cookie
  Data format description for capability {09461349-4C7F-11D1-8222-444553540000}
 xx xx   word (LE)   length of following data
 xx xx   word (LE)   protocol version
 xx .. xx   guid (LE)   plugin or zero bytes
 xx xx   word   unknown
 xx xx xx xx   dword (LE)   client capabilities flags
 xx   byte   unknown
 xx xx   word (LE)   seems to be a downcounter
 xx xx   word (LE)   length of following data
 xx xx   word (LE)   seems to be a downcounter as in first chunk above
 xx ..     unknown, usually zeros
if plugin field in first chunk above is zero, here is message, overwise here is plugin-specific data.


Example SNAC dump with flap header:

  2A 02 54 28 00 6E 00 04  00 0B 00 00 00 00 00 0B *.T(.n..........
  F3 3A C1 0C 70 18 00 00  00 02 07 36 32 31 38 38 .:..p......62188
  39 35 00 03 1B 00 07 00  00 00 00 00 00 00 00 00 95..............
  00 00 00 00 00 00 00 00  00 00 03 00 00 00 00 07 ................
  00 0E 00 07 00 00 00 00  00 00 00 00 00 00 00 00 ................
  00 E9 03 00 00 00 00 1B  00 55 73 65 72 20 69 73 .........User is
  20 63 75 72 72 65 6E 74  6C 79 20 4F 63 63 75 70  currently Occup
  69 65 64 00                                      ied.


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