L2CAP doesn't seem to be up

[ml-vic]

Maksims,
Perhaps I'm somewhat slow BUT ... I can *** only *** understand the 28.4.7 
point of the handbook thanks to your clear explanation about my case: I mean 
that now is clear who's the client and who's the server and what they are 
for!
Therefore thanks a lot!!! 
Ciao from Rome - Vittorio
 

Alle 22:12, venerdì 23 marzo 2007, Maksim Yevmenkin ha scritto:
> 28.4.7 Service Discovery Protocol (SDP)
>
> The Service Discovery Protocol (SDP) provides the means for client
> applications to discover the existence of services provided by server
> applications as well as the attributes of those services. The
> attributes of a service include the type or class of service offered
> and the mechanism or protocol information needed to utilize the
> service.
>
> SDP involves communication between a SDP server and a SDP client. The
> server maintains a list of service records that describe the
> characteristics of services associated with the server. Each service
> record contains information about a single service. A client may
> retrieve information from a service record maintained by the SDP
> server by issuing a SDP request. If the client, or an application
> associated with the client, decides to use a service, it must open a
> separate connection to the service provider in order to utilize the
> service. SDP provides a mechanism for discovering services and their
> attributes, but it does not provide a mechanism for utilizing those
> services.
>
> Normally, a SDP client searches for services based on some desired
> characteristics of the services. However, there are times when it is
> desirable to discover which types of services are described by an SDP
> server's service records without any a priori information about the
> services. This process of looking for any offered services is called
> browsing.
>
> ===
>
> specifically in your case, your nokia phone runs one or more bluetooth
> server applications and provides bluetooth services. your pc is a
> bluetooth client, who wishes to discover and possibly use one of the
> provided services.
>
> sdpd is only required if you want to run bluetooth services on your
> pc. this way bluetooth service application (running on your pc) will
> register itself with sdpd (running on your pc) so remote clients can
> actually know that your pc is providing bluetooth services.
>
> without doing anything at all, you should be able to discover
> bluetooth services on your nokia phone, by simply
>
> % sdpcontrol -a e61 browse
>
> or
>
> % sdpcontrol -a e16 search <service name>
>
>
> thanks,
> max