[Bluez-users] about rfcomm tty channel listening

[Bluez-users] about rfcomm tty channel listening

[mike lee]

Dear all
    When i bind a rfcomm tty socket, Could i serve mulitple connections
at the same time? And how about rfcomm raw socket? if the answer is no,
that mean i need to open a new channel to listen.
    Also , could i connect the rfcomm channel in the same computer?

best regard
Mike,Lee


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Re: [Bluez-users] about rfcomm tty channel listening

[Marcel Holtmann]

Hi,

>     When i bind a rfcomm tty socket, Could i serve mulitple connections
> at the same time? And how about rfcomm raw socket? if the answer is no,
> that mean i need to open a new channel to listen.
>     Also , could i connect the rfcomm channel in the same computer?

be more specific in what you are trying to do. I can't follow you.

Regards

Marcel




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Re: [Bluez-users] about rfcomm tty channel listening

[mike lee]

Marcel Holtmann wrote:

>Hi,
>
>  
>
>>    When i bind a rfcomm tty socket, Could i serve mulitple connections
>>at the same time? And how about rfcomm raw socket? if the answer is no,
>>that mean i need to open a new channel to listen.
>>    Also , could i connect the rfcomm channel in the same computer?
>>    
>>
>
>be more specific in what you are trying to do. I can't follow you.
>
>Regards
>
>Marcel
>  
>
    Sorry for my bad english, may be i describe more.
    I am now writing a server program to accept 2 rfcomm connections. I
found that it is not possible to accept 2 connections with same channel.
Why i ask this because, in tcp socket, a server create a socket with
e.g. 80 port. It can then accept multiple connections with the same port
number. The behavior is different between channel and socket.
    So, if i want to make multiple connections with rfcomm, i need to
bind, listen and accept in another rfcomm socket. Does this thinking
correct?

    I hope i can describe more clearly.

>
>
>
>-------------------------------------------------------
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>
>  
>


-- 
Software Engineer
Mike Lee
Avantwave limited
Tel: 852-29527125



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Re: [Bluez-users] about rfcomm tty channel listening

[Marcel Holtmann]

Hi,

> >>    When i bind a rfcomm tty socket, Could i serve mulitple connections
> >>at the same time? And how about rfcomm raw socket? if the answer is no,
> >>that mean i need to open a new channel to listen.
> >>    Also , could i connect the rfcomm channel in the same computer?
> >
> >be more specific in what you are trying to do. I can't follow you.
> >
>     Sorry for my bad english, may be i describe more.
>     I am now writing a server program to accept 2 rfcomm connections. I
> found that it is not possible to accept 2 connections with same channel.
> Why i ask this because, in tcp socket, a server create a socket with
> e.g. 80 port. It can then accept multiple connections with the same port
> number. The behavior is different between channel and socket.
>     So, if i want to make multiple connections with rfcomm, i need to
> bind, listen and accept in another rfcomm socket. Does this thinking
> correct?

this works if the two client connections are from different devices. If
they are coming from the same device then this won't work and you need a
second server on a different channel.

Regards

Marcel




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