[Bluez-users] HCI socket listen

[Bluez-users] HCI socket listen

[Robert Schmidt]

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Hi,

Can a HCI socket listen for connections like l2cap and rfcomm ?? In my case it throws followiing warning and does not listen:

GLib-WARNING **: giounix.c:400Error while getting flags for FD: Bad file descriptor (9)

In my program I do the following:

I Open and Bind the HCI socket (using hci_open_dev)and listen for connections.


thanks

robert.

       
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Re: [Bluez-users] HCI socket listen

[Marcel Holtmann]

Hi Robert,

> Can a HCI socket listen for connections like l2cap and rfcomm ?? In my
> case it throws followiing warning and does not listen:
> 
> GLib-WARNING **: giounix.c:400Error while getting flags for FD: Bad
> file descriptor (9)
> 
> In my program I do the following:
> 
> I Open and Bind the HCI socket (using hci_open_dev)and listen for
> connections.

the HCI socket is not working this way. Use L2CAP if you wanna receive
incoming connections and data.

Regards

Marcel



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Re: [Bluez-users] HCI socket listen

[Robert Schmidt]

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Hi Marcel,

Thanks for the reply. I have two questions for you :

1) How do I send ACL data between two devices using HCI socket ?

2) I tried sending a stream of bits using SCO connection. The program is similar to scotest. Eventhough, sending and receiving works  but the data received looks completely corrupted and different from data sent.

received data is like 
eg : \x03*\x03*\x03*\x03*\x03*\x03*\x03*�

hcidump:
> SCO data: handle 44 dlen 48
> SCO data: handle 44 dlen 48
> SCO data: handle 44 dlen 48
> SCO data: handle 44 dlen 48
> SCO data: handle 44 dlen 48
> SCO data: handle 44 dlen 48
> SCO data: handle 44 dlen 48
> SCO data: handle 44 dlen 48
> SCO data: handle 44 dlen 48
> SCO data: handle 44 dlen 48
> SCO data: handle 44 dlen 48
> SCO data: handle 44 dlen 48
> SCO data: handle 44 dlen 48
> SCO data: handle 44 dlen 48
> HCI Event: Disconn Complete (0x05) plen 4

Is there some data conversions to be done before sending or receiving data?

Note: I know that the best way to transfer data between devices is using l2cap but these question are part of my experiment to test different connections. So,please bear with me.

best regards,

robert.




Marcel Holtmann <marcel@holtmann.org> wrote: Hi Robert,

> Can a HCI socket listen for connections like l2cap and rfcomm ?? In my
> case it throws followiing warning and does not listen:
> 
> GLib-WARNING **: giounix.c:400Error while getting flags for FD: Bad
> file descriptor (9)
> 
> In my program I do the following:
> 
> I Open and Bind the HCI socket (using hci_open_dev)and listen for
> connections.

the HCI socket is not working this way. Use L2CAP if you wanna receive
incoming connections and data.

Regards

Marcel



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