Requests news and MOTD from battle.net.

The news timestamp specifies the starting date for the news. To retrieve all available news entries, set this to zero. Timestamps are given in C/Unix format -- that is, the number of seconds since January 1, 1970 0:00:00.000 -- and should be biased to UTC.

This message should be sent when you receive SID_ENTERCHAT. The official client stops processing messages after the user joins a game or enters a channel, and discards messages with more than 127 entries.

News can be requested for older products, but Battle.net will only return the server's Message-of-the-Day. However, this behavior has not been observed in official clients, and for an accurate protocol emulation, its use is not recommended.