Re: [Bluez-users] [ECONNRESET]Problem with last buffer readed with a read or recv

["Collin R. Mulliner" <collin@betaversion.net>]

Hi,

I have a pretty good documented/commented application that does RFCOMM
client-server communication (client and server implemented in the applica=
tion).
Maybe you should just take a look at my code (it is really not just hacke=
d
stuff!). There is one file with all the RFCOMM stuff in.
http://mulliner.org/bluetooth/btchat/ (you want: btchatd)


... Collin


Quoting Marcel Holtmann <marcel@holtmann.org>:

> Hi Andrea,
>
> > I writed a RFCOMM cleint side socket and its servere
> > side. The server sends an arbitrary sequence of 2048
> > bytes throught the write function. The client side
> > read as far as it receive a 0 or -1 frem the read.
> > The code is like this:
> > char *buffer[2048];
> > do {
> >    tmpPtr +=3D nread;
> >    nread =3D recv(fd, buffer, length, 0);
> > } while (nread > 0);
> >
> > The problem arise when the server correctly send its
> > last bucket, the client must read it (read 2048
> > bytes), at the next read the client must get an EOF
> > (0) value from the recv...but this not happen it
> > receive -1 and errno=3DECONNRESET. The same code works
> > as expected using TCP streams, but when it is used
> > over RFCOMM SOCK_STREAM it causes this anomaly.
> >
> > Somebody could explain what happens, why the recv call
> > doesn't return a 0 when last data are reached on the
> > stream, but give an error message?
>
> are you sure that your client/server code is correct, because until you
> don't close the socket on the server side, the client can't receive any
> additional information. It simply blocks. Show us the full code for bot=
h
> sides.
>
> Regards
>
> Marcel
>
>
>
>
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