Hello everybody
by reading sdptool.c, I was able to write a little program that promotes my
service. Realising this, 3 questions arised:
1. general:
how to browse the local sdp services?
[sdptool browse dev] seems to be only for remote devices. I now always did
it from another device to see the local seervices. how to [sdptool browse
localhost]?
2. from add_sp(...) in sdptool.c, changing:
# sdp_uuid16_create(&sp_uuid, SERIAL_PORT_SVCLASS_ID);
into:
# sdp_uuid128_create(&sp_uuid, a128bitUUID);
gives me (if I do [sdptool browse from the other device]):
# Service Class ID List:
# "Error: This is uuid128" (0x0a333444-5556-6677-7888-9aa99000a1a1)
Actually it works well. But why is it saying "Error: ..."? I noticed that
using the avetana jsr82 implementation (that uses bluez), and creating a
sdp entry with a 128bit uuid, it shows the same error.
3. actually this is more a c then a bluez question, but i'd appreciate if
someone could tell it nevertheless:
# sdp_uuid32_create(uuid_t *uuid, uint32_t data);
# sdp_uuid128_create(uuid_t *uuid, const void *data);
the second function takes the uuid as "const void *data". What is the
appropriate way to give a uuid like 2c3ef0c843674369b1dfb7315e76332a to
that function?
I asked google and he (she?) told me this:
http://www.xgarreau.org/aide/devel/bluetooth/timeserver.c
but it seems a little big for me...
regards
Marco
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Hi Taneli,
> > > >>how to browse the local sdp services?
> > > >>[sdptool browse dev] seems to be only for remote devices. I now always did
> > > >>it from another device to see the local seervices. how to [sdptool browse
> > > >>localhost]?
> > > >
> > > >
> > > > sdptool browse local
> > >
> > > nice :-)
> > > maybe something that should/could be mentioned in the manpage or in --help
> >
> > feel free to send in a patch.
>
> What do you think about this? It adds the "sdptool browse local" to the
> examples.
applied. Thanks.
Regards
Marcel
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On Sat, 2005-03-05 at 14:38 +0100, Marcel Holtmann wrote:
> Hi Marco,
>
> > >>how to browse the local sdp services?
> > >>[sdptool browse dev] seems to be only for remote devices. I now always did
> > >>it from another device to see the local seervices. how to [sdptool browse
> > >>localhost]?
> > >
> > >
> > > sdptool browse local
> >
> > nice :-)
> > maybe something that should/could be mentioned in the manpage or in --help
>
> feel free to send in a patch.
What do you think about this? It adds the "sdptool browse local" to the
examples.
Taneli
Hi Marco,
> >>how to browse the local sdp services?
> >>[sdptool browse dev] seems to be only for remote devices. I now always did
> >>it from another device to see the local seervices. how to [sdptool browse
> >>localhost]?
> >
> >
> > sdptool browse local
>
> nice :-)
> maybe something that should/could be mentioned in the manpage or in --help
feel free to send in a patch.
> >>from add_sp(...) in sdptool.c, changing:
> >> # sdp_uuid16_create(&sp_uuid, SERIAL_PORT_SVCLASS_ID);
> >>into:
> >> # sdp_uuid128_create(&sp_uuid, a128bitUUID);
> >>gives me (if I do [sdptool browse from the other device]):
> >> # Service Class ID List:
> >> # "Error: This is uuid128" (0x0a333444-5556-6677-7888-9aa99000a1a1)
> >>Actually it works well. But why is it saying "Error: ..."? I noticed that
> >>using the avetana jsr82 implementation (that uses bluez), and creating a
> >>sdp entry with a 128bit uuid, it shows the same error.
> >
> >
> > This is because the friend display (without --tree) don't understand
> > UUID 128 and don't knows how to translate it into a service.
>
> nice again. this solves my proglem that never existed :-)
> maybee another thing to mention in the manpage...
Again, any updates of the manual pages are always welcome.
> >>actually this is more a c then a bluez question, but i'd appreciate if
> >>someone could tell it nevertheless:
> >> # sdp_uuid32_create(uuid_t *uuid, uint32_t data);
> >> # sdp_uuid128_create(uuid_t *uuid, const void *data);
> >>the second function takes the uuid as "const void *data". What is the
> >>appropriate way to give a uuid like 2c3ef0c843674369b1dfb7315e76332a to
> >>that function?
> >
> >
> > Using "unsigned char uuid[16]" and then casting with "(void *)" worked
> > for me.
>
> actually, i've a long representation of my uuid. but i'm willing to try!
> using 0x233438787A233438787A233438787A23 as long uuid and an ascii table
> gives me: "#48xz#48xz#48xz#" for a char representation of the uuid and it
> works! :-)
>
> but unfortunately that's an invented uuid to avoid control-chars. my uuid
> has values as 0x0F -> that's a SI (left shift) in the ascii table.
> so i did:
>
> unsigned char uuid[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
> 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10 };
>
> and it works as too. is this what you meant?
It is exactly how I create UUID 128 if needed. If you play with long
types then you may ran into compiler or platform problems. The unsigned
character array is supposed to work everywhere.
> thanks a lot for the short and precise answers! it's always a pleasure!
You are welcome.
Regards
Marcel
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Marcel Holtmann wrote:
> Hi Marco,
>
>
>>by reading sdptool.c, I was able to write a little program that promotes my
>>service. Realising this, 3 questions arised:
>>
>>1. general:
>>how to browse the local sdp services?
>>[sdptool browse dev] seems to be only for remote devices. I now always did
>>it from another device to see the local seervices. how to [sdptool browse
>>localhost]?
>
>
> sdptool browse local
nice :-)
maybe something that should/could be mentioned in the manpage or in --help
>>2. from add_sp(...) in sdptool.c, changing:
>> # sdp_uuid16_create(&sp_uuid, SERIAL_PORT_SVCLASS_ID);
>>into:
>> # sdp_uuid128_create(&sp_uuid, a128bitUUID);
>>gives me (if I do [sdptool browse from the other device]):
>> # Service Class ID List:
>> # "Error: This is uuid128" (0x0a333444-5556-6677-7888-9aa99000a1a1)
>>Actually it works well. But why is it saying "Error: ..."? I noticed that
>>using the avetana jsr82 implementation (that uses bluez), and creating a
>>sdp entry with a 128bit uuid, it shows the same error.
>
>
> This is because the friend display (without --tree) don't understand
> UUID 128 and don't knows how to translate it into a service.
nice again. this solves my proglem that never existed :-)
maybee another thing to mention in the manpage...
>>3. actually this is more a c then a bluez question, but i'd appreciate if
>>someone could tell it nevertheless:
>> # sdp_uuid32_create(uuid_t *uuid, uint32_t data);
>> # sdp_uuid128_create(uuid_t *uuid, const void *data);
>>the second function takes the uuid as "const void *data". What is the
>>appropriate way to give a uuid like 2c3ef0c843674369b1dfb7315e76332a to
>>that function?
>
>
> Using "unsigned char uuid[16]" and then casting with "(void *)" worked
> for me.
actually, i've a long representation of my uuid. but i'm willing to try!
using 0x233438787A233438787A233438787A23 as long uuid and an ascii table
gives me: "#48xz#48xz#48xz#" for a char representation of the uuid and it
works! :-)
but unfortunately that's an invented uuid to avoid control-chars. my uuid
has values as 0x0F -> that's a SI (left shift) in the ascii table.
so i did:
unsigned char uuid[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10 };
and it works as too. is this what you meant?
thanks a lot for the short and precise answers! it's always a pleasure!
regards
Marco
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Hi Marco,
> by reading sdptool.c, I was able to write a little program that promotes my
> service. Realising this, 3 questions arised:
>
> 1. general:
> how to browse the local sdp services?
> [sdptool browse dev] seems to be only for remote devices. I now always did
> it from another device to see the local seervices. how to [sdptool browse
> localhost]?
sdptool browse local
> 2. from add_sp(...) in sdptool.c, changing:
> # sdp_uuid16_create(&sp_uuid, SERIAL_PORT_SVCLASS_ID);
> into:
> # sdp_uuid128_create(&sp_uuid, a128bitUUID);
> gives me (if I do [sdptool browse from the other device]):
> # Service Class ID List:
> # "Error: This is uuid128" (0x0a333444-5556-6677-7888-9aa99000a1a1)
> Actually it works well. But why is it saying "Error: ..."? I noticed that
> using the avetana jsr82 implementation (that uses bluez), and creating a
> sdp entry with a 128bit uuid, it shows the same error.
This is because the friend display (without --tree) don't understand
UUID 128 and don't knows how to translate it into a service.
> 3. actually this is more a c then a bluez question, but i'd appreciate if
> someone could tell it nevertheless:
> # sdp_uuid32_create(uuid_t *uuid, uint32_t data);
> # sdp_uuid128_create(uuid_t *uuid, const void *data);
> the second function takes the uuid as "const void *data". What is the
> appropriate way to give a uuid like 2c3ef0c843674369b1dfb7315e76332a to
> that function?
Using "unsigned char uuid[16]" and then casting with "(void *)" worked
for me.
Regards
Marcel
-------------------------------------------------------
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Read honest & candid reviews on hundreds of IT Products from real users.
Discover which products truly live up to the hype. Start reading now.
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