[Bluez-devel] sdp_record_register()

[Bluez-devel] sdp_record_register()

[Ari Paavilainen]

Hi,

Function call:
err = sdp_record_register(session, record, 0);
returns zero and error is 'Illegal seek'.
Arguments should be ok (session is return value of successful call to
sdp_connect() and record works ok with another function calls).
What might be wrong?

-Ari




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Re: [Bluez-devel] sdp_record_register()

[Marcel Holtmann]

Hi Ari,

> Function call:
> err = sdp_record_register(session, record, 0);
> returns zero and error is 'Illegal seek'.
> Arguments should be ok (session is return value of successful call to
> sdp_connect() and record works ok with another function calls).
> What might be wrong?

the sdp_connect() has been done to the local SDP server, right. You
can't register SDP records for remote connections.

Regards

Marcel




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Re: [Bluez-devel] sdp_record_register()

[Ari Paavilainen]

On Wed, 2006-02-08 at 00:56 +0100, Marcel Holtmann wrote:
> Hi Ari,
> 
> > Function call:
> > err = sdp_record_register(session, record, 0);
> > returns zero and error is 'Illegal seek'.
> > Arguments should be ok (session is return value of successful call to
> > sdp_connect() and record works ok with another function calls).
> > What might be wrong?
> 
> the sdp_connect() has been done to the local SDP server, right. You
> can't register SDP records for remote connections.
> 

In sdp_record_register() there is:

        if (!session->local) {
          errno = EREMOTE;
          return -1;
        }

Did you mean this by the remote connection (the program passes this test)? 
Anyway, it seems to be that the only way to sdp_record_register() return ESPIPE (Illegal seek) error is when call to sdp_send_req_w4_rsp() fails. Does this give any hint?

-Ari




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Re: [Bluez-devel] sdp_record_register()

[Marcel Holtmann]

Hi Ari,

> > > Function call:
> > > err = sdp_record_register(session, record, 0);
> > > returns zero and error is 'Illegal seek'.
> > > Arguments should be ok (session is return value of successful call to
> > > sdp_connect() and record works ok with another function calls).
> > > What might be wrong?
> > 
> > the sdp_connect() has been done to the local SDP server, right. You
> > can't register SDP records for remote connections.
> > 
> 
> In sdp_record_register() there is:
> 
>         if (!session->local) {
>           errno = EREMOTE;
>           return -1;
>         }
> 
> Did you mean this by the remote connection (the program passes this test)? 
> Anyway, it seems to be that the only way to sdp_record_register() return ESPIPE (Illegal seek) error is when call to sdp_send_req_w4_rsp() fails. Does this give any hint?

make sure that sdpd process is running. Follow the examples from sdptool
or pand.

Regards

Marcel




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Re: [Bluez-devel] sdp_record_register()

[Ari Paavilainen]

On Wed, 2006-02-08 at 13:48 +0100, Marcel Holtmann wrote:
> Hi Ari,
> 
> > > > Function call:
> > > > err = sdp_record_register(session, record, 0);
> > > > returns zero and error is 'Illegal seek'.
> > > > Arguments should be ok (session is return value of successful call to
> > > > sdp_connect() and record works ok with another function calls).
> > > > What might be wrong?
> > > 
> > > the sdp_connect() has been done to the local SDP server, right. You
> > > can't register SDP records for remote connections.
> > > 
> > 
> > In sdp_record_register() there is:
> > 
> >         if (!session->local) {
> >           errno = EREMOTE;
> >           return -1;
> >         }
> > 
> > Did you mean this by the remote connection (the program passes this test)? 
> > Anyway, it seems to be that the only way to sdp_record_register() return ESPIPE (Illegal seek) error is when call to sdp_send_req_w4_rsp() fails. Does this give any hint?
> 
> make sure that sdpd process is running. Follow the examples from sdptool
> or pand.
> 

sdpd is running. In 'sdptool.c' there is no call to
'sdp_record_register()'. Is there any other examples of registering a
service record?

-Ari



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Re: [Bluez-devel] sdp_record_register()

[Bastien Nocera]

On Fri, 2006-02-10 at 13:45 +0200, Ari Paavilainen wrote:
> On Wed, 2006-02-08 at 13:48 +0100, Marcel Holtmann wrote:
> > Hi Ari,
> > 
> > > > > Function call:
> > > > > err = sdp_record_register(session, record, 0);
> > > > > returns zero and error is 'Illegal seek'.
> > > > > Arguments should be ok (session is return value of successful call to
> > > > > sdp_connect() and record works ok with another function calls).
> > > > > What might be wrong?
> > > > 
> > > > the sdp_connect() has been done to the local SDP server, right. You
> > > > can't register SDP records for remote connections.
> > > > 
> > > 
> > > In sdp_record_register() there is:
> > > 
> > >         if (!session->local) {
> > >           errno = EREMOTE;
> > >           return -1;
> > >         }
> > > 
> > > Did you mean this by the remote connection (the program passes this test)? 
> > > Anyway, it seems to be that the only way to sdp_record_register() return ESPIPE (Illegal seek) error is when call to sdp_send_req_w4_rsp() fails. Does this give any hint?
> > 
> > make sure that sdpd process is running. Follow the examples from sdptool
> > or pand.
> > 
> 
> sdpd is running. In 'sdptool.c' there is no call to
> 'sdp_record_register()'. Is there any other examples of registering a
> service record?

This is the code to register Obex push support for GNOME's Bluetooth
utilities:
http://cvs.gnome.org/viewcvs/libbtctl/src/obexsdp.c?view=markup

---
Bastien Nocera <hadess@hadess.net> 
How can you be so serious on a film where you are dodging explosions and
running away with [...] an eight-foot monkey on this side, and the
eight-foot monkey is the one flying the spaceship? -- Mark Hamill



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[Bluez-devel] sdp_record_register()

[ari.paavilainen]

Hi,

I found following thing in sdp_record_register():
The comment in source code tells that the function returns non-null pointer on 
success and -1 on failure. I have investigated the code and found out that the 
function returns only 0 or -1:
There are two return commands in the function: return -1; and return status; 
and for status: status=-1; and status = sdp_send_req_w4_rsp(...); In 
sdp_send_req_w4_rsp() there is three times return -1; and one return 0;
So, is the return value zero success here?

But the main problem here is that I can't register a bluetooth service with 
the sdp_record_register() ('sdptool browse local' doesn't list it). I have used 
following code (by Albert Huang):
All function calls succeed.

sdp_session_t *register_service()
{
    int ret;
    uint32_t service_uuid_int[] = { 0, 0, 0, 0xABCD };
    uint8_t rfcomm_channel = 11;
    const char *service_name = "Name";
    const char *service_dsc = "Description";
    const char *service_prov = "Service provider";

    uuid_t root_uuid, l2cap_uuid, rfcomm_uuid, svc_uuid;
    sdp_list_t *l2cap_list = 0, 
               *rfcomm_list = 0,
               *root_list = 0,
               *proto_list = 0, 
               *access_proto_list = 0;
    sdp_data_t *channel = 0, *psm = 0;

    sdp_record_t *record = sdp_record_alloc();

    // set the general service ID
    sdp_uuid128_create( &svc_uuid, &service_uuid_int );
    sdp_set_service_id(record, svc_uuid );

    // make the service record publicly browsable
    sdp_uuid16_create(&root_uuid, PUBLIC_BROWSE_GROUP); 
    root_list = sdp_list_append(0, &root_uuid);
    sdp_set_browse_groups(record, root_list );

    // set l2cap information
    sdp_uuid16_create(&l2cap_uuid, L2CAP_UUID);
    l2cap_list = sdp_list_append( 0, &l2cap_uuid );
    proto_list = sdp_list_append( 0, l2cap_list );

    // set rfcomm information
    sdp_uuid16_create(&rfcomm_uuid, RFCOMM_UUID); 
    channel = sdp_data_alloc(SDP_UINT8, &rfcomm_channel);
    rfcomm_list = sdp_list_append( 0, &rfcomm_uuid );
    sdp_list_append( rfcomm_list, channel ); 
    sdp_list_append( proto_list, rfcomm_list );

    // attach protocol information to service record
    access_proto_list = sdp_list_append( 0, proto_list );
    sdp_set_access_protos( record, access_proto_list );

    // set the name, provider, and description
    sdp_set_info_attr(record, service_name, service_prov, service_dsc);

    int err = 0;
    sdp_session_t *session = 0;
    // connect to the local SDP server, register the service record, and 
    // disconnect
    session = sdp_connect( BDADDR_ANY, BDADDR_LOCAL, SDP_RETRY_IF_BUSY );
    err = sdp_record_register(session, record, 0);

    // cleanup
    sdp_data_free( channel );
    sdp_list_free( l2cap_list, 0 );
    sdp_list_free( rfcomm_list, 0 );
    sdp_list_free( root_list, 0 );
    sdp_list_free( access_proto_list, 0 );

    return session;
}



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Re: [Bluez-devel] sdp_record_register()

[Albert Huang]

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> I found following thing in sdp_record_register():
> The comment in source code tells that the function returns non-null
> pointer on
> success and -1 on failure. I have investigated the code and found out that
> the
> function returns only 0 or -1:


what version of bluez are you using?  The latest versions don't say this, in
either sdp.h or sdp_lib.h

There are two return commands in the function: return -1; and return status;
> and for status: status=-1; and status = sdp_send_req_w4_rsp(...); In
> sdp_send_req_w4_rsp() there is three times return -1; and one return 0;
> So, is the return value zero success here?
>

yes.

-albert

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