SNAC(04,0B)/CH2 client message error or data

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.