1.4 Relationship to Other Protocols

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The DirectPlay 8 Protocol requires UDP or a similar datagram-oriented, connectionless protocol. The DirectPlay 8 Protocol is always implemented together with the DirectPlay 8 Host and Port Enumeration Protocol [MC-DPLHP] and the DirectPlay 8 Core and Service Providers Protocol [MC-DPL8CS]. The DirectPlay 8 Protocol is required for use by the DirectPlay 8 Core and Service Providers Protocol.

Note All DirectPlay 8 Protocol messages are constructed so that at least one bit in the first byte is set. When a message is received and the lead byte is nonzero, the DirectPlay 8 Host and Port Enumeration Protocol passes the entire message through to the DirectPlay 8 Protocol.