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<concept xml:lang="en" id="GUID-2F1C6B4C-2C23-5A35-A0D2-223EC6238F7D"><title>Bluetooth Service Discovery Agent Overview</title><prolog><metadata><keywords/></metadata></prolog><conbody><section><title>Purpose</title> <p>Enables you to discover the Bluetooth services, and the attributes of those services, that are available on a remote device. </p> </section> <section><title>Architectural relationships</title> <p>The Service Discovery Agent API is one of two APIs that enable you to use the Bluetooth Service Discovery Protocol. The other, the <xref href="GUID-756D831F-F302-594C-8116-144358DD8442.dita">Bluetooth Service Discovery Database</xref>, enables a local service to enter its own properties into a local service database. </p> </section> <section><title>Description</title> <p> <xref href="GUID-6A33D6A1-63C8-3A15-A2BC-5D08F07C5AB6.dita"><apiname>CSdpAgent</apiname></xref> is used to make Symbian OS Bluetooth SDP requests to a remote device. There are two basic queries you can make using it: </p> <ul><li id="GUID-F1360383-5474-5FE6-BEFD-29FCE6954C89"><p>Getting the services on the remote device and setting the classes of service for which you want to query using a <xref href="GUID-745D8374-1012-356B-A15E-6CBC96E64E95.dita"><apiname>CSdpSearchPattern</apiname></xref> object </p> </li> <li id="GUID-4FDB699D-E73A-53C7-943C-830D88E3B6F8"><p>Getting the attributes for a specific service and setting a list of attributes to be retrieved using a <xref href="GUID-7DA0506B-F2C1-374B-847F-8DF070BD2FE9.dita"><apiname>CSdpAttrIdMatchList</apiname></xref> object </p> </li> </ul> <p>An application using of <xref href="GUID-6A33D6A1-63C8-3A15-A2BC-5D08F07C5AB6.dita"><apiname>CSdpAgent</apiname></xref> must implement the interface <xref href="GUID-AD76DB7F-CD45-3903-A07A-E94BE583CDB0.dita"><apiname>MSdpAgentNotifier</apiname></xref> to receive the responses to queries. </p> <p>The API also supplies <xref href="GUID-3DE5145D-4D19-3439-A08C-58C0F504B24F.dita"><apiname>CElementParser</apiname></xref>, to parse a raw input buffer containing an attribute value into its constituent data elements. </p> </section> <section><title>Using the Bluetooth Service Discovery Agent</title> <p>The following tutorials will help get you started using the Bluetooth SDP Service Discovery Agent. </p> <ul><li id="GUID-5E4CE295-C84A-58D2-9078-365BF108F07A"><p> <xref href="GUID-275D7892-EEBD-5DBD-A9D7-F6A715B79659.dita">Querying the SDP database</xref>  </p> </li> <li id="GUID-810282C3-5B8D-5E38-A4BE-2095A9BD2853"><p> <xref href="GUID-1EA7B3A5-7A94-5E8F-A0A8-9CA417E14032.dita">Reading remote SDP service attributes</xref>  </p> </li> <li id="GUID-E75D9121-10E5-5060-A8F6-E8E79BB5AD9B"><p> <xref href="GUID-65F8675F-FF08-5707-BA5B-BF3B4B779393.dita">Handling SDP query results</xref>  </p> </li> </ul> </section> </conbody></concept>