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Instantiating a Network Direct Provider

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To get the Network Direct providers that are registered on the computer, call the WSCEnumProtocols function. For each protocol that the function returns, compare the members of the WSAPROTOCOL_INFO structure to those specified in Registering a Network Direct Provider. If the member values match, the protocol may be a Network Direct provider.

To determine if the provider is a Network Direct provider, you must try to instantiate the INDProvider interface.

The following steps show how to instantiate the provider:

  1. Load the provider's DLL. To get the path to the DLL, call the WSCGetProviderPath function using the ProviderId member from the WSAPROTOCOL_INFO structure.
  2. Call the library's DllGetClassObject entry point to get an IClassFactory interface.
  3. Use the factory's CreateInstance method to instantiate the INDProvider interface.

Now that you have a provider, you need to determine if the provider supports the IP address that you want to use. To determine the list of IP address that the provider supports, call the INDProvider::QueryAddressList method.

For details on getting an interface to the Network Direct adapter that you want to use, see Getting an Interface to a Network Direct Adapter.

 

 

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Build date: 7/2/2010