Re: [Bluez-users] Help me solve the rfcomm programming.

[Marcel Holtmann <marcel@holtmann.org>]

Hi,

> I am writing a programm using serial profile. But it makes me crzay.
> When I am using serial port program (client and server) after I am setting 
> using "rfcomm command" ,i.e, listen and connect, it is ok.
> But, When I try to merge with my program The Peer doesnot gets Data even though the connection is opened successfully and 
> client sent data successfully.
> My program is like this.
>                                                            open("/dev/rfcomm0") 
>      test "config1" -----fork--------------------------^----*----- read( nothing or less than sent!!!) 
>                            |                           | signal (to let parent know I can reciev
>                            +----     exec ( rfcomm listen) .... 
>                                                       | 
>                           +------- exec (rfcomm connect) 
>                           |                            | signal (to let parent know it can send something) 
>      test "config2" -----fork ----                     v ----*------* write( 100 bytes)
>                                                           open("/dev/rfcomm4")

if you don't use a legacy application that needs an TTY then you also
don't need to use the TTY feature of RFCOMM. Use the RFCOMM sockets
directly and your life will be a lot more easier.

>  IS THIS Because I am using two USB dongle in the same Desktop linux????

No. This works perfect. They only situation where this is problematic is
PAN/BNEP, because the Linux TCP/IP then routes all data of the loopback
interface.

Regards

Marcel




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