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结贴:
The Service Discovery Protocol differs from all other layers above L2CAP in that it is Bluetooth-centered.It is not designed to interface to an existing higher layer protocol, but instead address a specific requirement of Bluetooth operation:finding out what services are available on a connected device.The SDP layer acts like a service database.The local application is responsible for registering available services on the database and keeping records up to date.Remote devices may the query the database to find out what services are available and how to connect to them.The details of service discovery can be complex and are discussed further in Chapter 5, but each profile describes exactly what information should be registered with SDP based on the application implementaion.
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发表于 2007-10-24 13:06
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