5.4.7 changes to Battle.net® chat

We want to give User Interface Add-On authors a heads up about a change in upcoming patch 5.4.7 (release date: TBD).

In patch 5.4.7, BattleTag™ or Real ID friends will only be able to send 10 chat messages every 10 seconds over Battle.net® chat. We’re adding a new way for User Interface Add-Ons to send communications information via a new send function and receive event.

Send function:

BNSendGameData (presenceID, addonPrefix, message)

• Prefix must be <= 16 bytes and cannot include a colon.
• The message should be <= 4078 bytes. This is 4095 bytes minus the 16 byte prefix and an added colon separator.

Receive event:

BN_CHAT_MSG_ADDON - prefix, text, “WHISPER”, senderToonID

Edit: Updated total maximum message size to 4095 bytes (up from 255 bytes) in an upcoming PTR build.

01/27/2014 04:51 PMPosted by Tinymasher

is the message limited to 238 or is the combination of addonPrefix + message still limited to 255?

You don't have to use all 4095 bytes.

The message is [16 bytes used for the addonPrefix] + ":" + [4078 bytes remaining for message] = 4095 bytes max total.

Edit: Updated total maximum message size to 4095 bytes (up from 255 bytes.)

Hello. We're increasing the maximum message size to 4095 bytes in an upcoming PTR build.

Send function:

BNSendGameData (presenceID, addonPrefix, message)

• Prefix must be <= 16 bytes and cannot include a colon.
• The message should be <= 4078 bytes. This is 4095 bytes minus the 16 byte prefix and an added colon separator.

Receive event:

BN_CHAT_MSG_ADDON - prefix, text, “WHISPER”, senderToonID

The message should be <= 4095 bytes. This is 4078 bytes minus the 16 byte prefix and an added colon separator.

Just making sure, the 4078 and 4095 are backwards here right?

Yeah. Fixed it.