[Bluez-devel] BlueZ rfcomm channel

[Bluez-devel] BlueZ rfcomm channel

[# Björn Specht #]

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Hi guys,

I am working on BlueZ for a few days now and it is hard to start working with it for me. I want to write a program (Client/Server) in C which uses the rfcomm socket and I want to use a channel to transfer data between these two computers. 
The HCI_inquiry function is running and finds the other PC. How can I establish a connection between these two computers with the rfcomm sockets?

Thanks for helping
Björn 

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Re: [Bluez-devel] BlueZ rfcomm channel

[Lars Grunewaldt]

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Hash: SHA1

# Bj=F6rn Specht # wrote:
| Hi guys,
|
| I am working on BlueZ for a few days now and it is hard to start
working with it for me. I want to write a program (Client/Server) in C
which uses the rfcomm socket and I want to use a channel to transfer
data between these two computers.
| The HCI_inquiry function is running and finds the other PC. How can I
establish a connection between these two computers with the rfcomm socket=
s?

have a look at the example programs. it should be something like:

(this is for connection to a headset with rfcomm, but it should be
similar. There are other examples in bluez-tools, if I'm not mistaken.

static int rfcomm_connect(bdaddr_t * src, bdaddr_t * dst, uint8_t channel=
)
{
~        struct sockaddr_rc addr;
~        int s;

~        if ((s =3D socket(PF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM)) < =
0) {
~                return -1;
~        }

~        memset(&addr, 0, sizeof(addr));
~        addr.rc_family =3D AF_BLUETOOTH;
~        bacpy(&addr.rc_bdaddr, src);
~        addr.rc_channel =3D 0;
~        if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
~                close(s);
~                return -1;
~        }

~        memset(&addr, 0, sizeof(addr));
~        addr.rc_family =3D AF_BLUETOOTH;
~        bacpy(&addr.rc_bdaddr, dst);
~        addr.rc_channel =3D channel;
~        if (connect(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
~                close(s);
~                return -1;
~        }

~        return s;
}

have fun,
~  Lars


- --
Lars Grunewaldt
* software development
* multimedia design
skills: C/C++/Java/PHP/(X)HTML/Flash/audio/video
web: http://www.dark-reality.de
mail: lgw@dark-reality.de
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Re: [Bluez-devel] BlueZ rfcomm channel

[# Björn Specht #]

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THX Lars, 

I also found some stuff in rctest.c . I will have a go with that,too.

Cheers
Björn

On Thu, 20 Jan 2005 14:55:23 +0100
Lars Grunewaldt <lgw@dark-reality.de> wrote:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> # Björn Specht # wrote:
> | Hi guys,
> |
> | I am working on BlueZ for a few days now and it is hard to start
> working with it for me. I want to write a program (Client/Server) in C
> which uses the rfcomm socket and I want to use a channel to transfer
> data between these two computers.
> | The HCI_inquiry function is running and finds the other PC. How can I
> establish a connection between these two computers with the rfcomm sockets?
> 
> have a look at the example programs. it should be something like:
> 
> (this is for connection to a headset with rfcomm, but it should be
> similar. There are other examples in bluez-tools, if I'm not mistaken.
> 
> static int rfcomm_connect(bdaddr_t * src, bdaddr_t * dst, uint8_t channel)
> {
> ~        struct sockaddr_rc addr;
> ~        int s;
> 
> ~        if ((s = socket(PF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM)) < 0) {
> ~                return -1;
> ~        }
> 
> ~        memset(&addr, 0, sizeof(addr));
> ~        addr.rc_family = AF_BLUETOOTH;
> ~        bacpy(&addr.rc_bdaddr, src);
> ~        addr.rc_channel = 0;
> ~        if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
> ~                close(s);
> ~                return -1;
> ~        }
> 
> ~        memset(&addr, 0, sizeof(addr));
> ~        addr.rc_family = AF_BLUETOOTH;
> ~        bacpy(&addr.rc_bdaddr, dst);
> ~        addr.rc_channel = channel;
> ~        if (connect(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
> ~                close(s);
> ~                return -1;
> ~        }
> 
> ~        return s;
> }
> 
> have fun,
> ~  Lars
> 
> 
> - --
> Lars Grunewaldt
> * software development
> * multimedia design
> skills: C/C++/Java/PHP/(X)HTML/Flash/audio/video
> web: http://www.dark-reality.de
> mail: lgw@dark-reality.de
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.2.3 (GNU/Linux)
> Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org
> 
> iD8DBQFB77hLQWC6DTWkDAoRAqv0AJoCI5XuhYrqFGAM9qvqmbJr/VEQawCcD0uj
> 34s/2fQhdoiN+maE7liaH2M=
> =PhyO
> -----END PGP SIGNATURE-----
> 
> 
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