[4.3.0] Opcodes:
CMSG_BATTLEFIELD_MGR_QUEUE_REQUEST
CMSG_BATTLEFIELD_MGR_ENTRY_INVITE_RESPONSE
CMSG_CANCEL_AURA
CMSG_FAR_SIGHT
CMSG_GROUP_LEAVE
CMSG_GROUP_REQUEST_JOIN_UPDATES
CMSG_PET_ACTION
CMSG_PET_CAST_SPELL
CMSG_PVP_LOG_DATA
CMSG_QUESTGIVER_CANCEL
CMSG_REQUEST_RATED_BG_INFO
CMSG_REQUEST_PVP_OPTIONS_ENABLED
CMSG_REQUEST_PVP_REWARDS
CMSG_SPELLCLICK
CMSG_SWAP_INV_ITEM
CMSG_SWAP_ITEM
MSG_MINIMAP_PING
SMSG_GUILD_XP_GAIN
SMSG_LFG_JOIN_RESULT
SMSG_LFG_PARTY_INFO
SMSG_RAID_MARKERS_CHANGED
SMSG_PLAY_SPELL_VISUAL_KIT
SMSG_QUESTUPDATE_FAILED
SMSG_QUESTLOG_FULL
SMSG_SPELLINTERRUPTLOG
SMSG_STREAMING_MOVIE
SMSG_UNIT_HEALTH_FREQUENT