2.2.33 DPSP_MSG_IAMNAMESERVER
The DPSP_MSG_IAMNAMESERVER packet is sent to inform participants of the identity of the name server (host).
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DPSP_MSG_HEADER (28 bytes) |
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IDTo |
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IDHost |
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Flags |
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SPDataSize |
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SPData (variable) |
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DPSP_MSG_HEADER (28 bytes): The message header for this packet. The Command Value member of this field MUST be set to 53 (0x35).
IDTo (4 bytes): MUST be set to the identifier of the destination player.
IDHost (4 bytes): MUST be set to the system player ID of the new DirectPlay host.
Flags (4 bytes): MUST be set to the player flags that describe the system player of the new host.
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1SP
NS
PG
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SP (1 bit): The player is the system player.
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NS (1 bit): The player is the name server (host). MUST be combined with SP.
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PG (1 bit): The player belongs to a group. This flag MUST be set for system players, for other players that have been added to a group using DPSP_MSG_ADDPLAYERTOGROUP (section 2.2.12), or for groups that have been added to a group using DPSP_MSG_ADDSHORTCUTTOGROUP (section 2.2.13).
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X (29 bits): All bits that have this label SHOULD be set to zero when sent and MUST be ignored on receipt.
SPDataSize (4 bytes): MUST contain the length, in octets, of the SPData field.
SPData (variable): If SPDataSize is nonzero, MUST be set to the data that is used by the DirectPlay Service Provider.
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If provided, the Windows Winsock DirectPlay Service Provider stores the following data in the SPData field.
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1Stream Socket Address (16 bytes)
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Datagram Socket Address (16 bytes)
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Stream Socket Address (16 bytes): A SOCKADDR_IN structure that contains the addressing information to be used when contacting this player over TCP. The Address field of this SOCKADDR_IN must be set to 0.0.0.0.
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Datagram Socket Address (16 bytes): A SOCKADDR_IN structure that contains the addressing information to be used when contacting this player over UDP. The Address field of this SOCKADDR_IN must be set to 0.0.0.0.