3.1.4.9 Set Group Name

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When a higher-level entity indicates that the DirectPlay client SHOULD change the name of a group and the DirectPlay client has joined a game session, the DirectPlay client MUST format a DPSP_MSG_GROUPNAMECHANGED (section 2.2.32) message. If the Session.MulticastServer flag is set, the DirectPlay client MUST wrap the DPSP_MSG_GROUPNAMECHANGED message in a DPSP_MSG_ASK4MULTICAST message (section 2.2.14) and it MUST transmit the wrapped message to the game host. If the Session.MulticastServer flag is not set, the DirectPlay client MUST transmit the DPSP_MSG_GROUPNAMECHANGED message to each of the computers that are currently joined to the game session. There is no response expected to this message.