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1.7 Versioning and Capability Negotiation

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There is only one version of the DirectPlay 4 Protocol. It is activated at the request of the application. It is assumed that the application has taken measures to ensure that the appropriate version of the DirectX Runtime has been installed on all peers involved in a DirectPlay game session.

If the versions of DirectPlay on all computing systems do not support the DirectPlay 4 Protocol, and the application has requested that the DirectPlay 4 Protocol be used, the connection process between peers fails gracefully. That is, a node with a version of the DirectX Runtime earlier than version 5 that is attempting to join a DirectPlay game session that has the DirectPlay 4 Protocol activated will be rejected during its join attempt.

For version negotiation between versions of DirectPlay, see [MC-DPL4CS].