Bluetooth causing crash on S40

[somatik]

Hi all,

I'm testing a bluetooth application that works fine on a SE850 and N95, but on S40 (6500c / 6300) phones the application crashes half of the time. The crash being a white screen, slow screen rebuild and some theme glitches...

I got one crash location traced and this code is triggering the crash:
dis.readFully(sizebuff);

Our application has one debug(logging) btspp connection + one data btspp connection that is reconnected every time server data is needed.

Is this a known problem? I suppose not since it was not fixed in s40_5 fp1
Any ideas?

[somatik]

The crashing of the application causes some memory to be unavailable after it. We can't start the picture taking application (not enough memory) and the local storage indicates 23mb (equal to the size of the pim storage) instead of 966mb left (the filesystem must be locked in some way..)

Nokia 6500 (no memory card, 1gig internal storage)

only a full phone reboot brings everything to normal...

[traud]

How large is your buffer? Have you considered to use the much more stable read() returning just a simple byte?

[somatik]

How large is your buffer? Have you considered to use the much more stable read() returning just a simple byte?

The place where he crashes I have a buffer of 4 bytes (reading packet size)
After that I'm using a 2 * 1024 bytes buffer using:

is.read(buffer, buffpos, buffer.length - buffpos);

and this untill the buffer is full, and I use the data

[somatik]

How large is your buffer? Have you considered to use the much more stable read() returning just a simple byte?

I tried reading the 4 bytes using read() 4 times but I'm still getting the crash...

we are using a python server which uses the bluez stack for bluetooth communication

[r2j7]

Hello somatik,

is your issue similar to this one for S60 and Series 80?:

http://wiki.forum.nokia.com/index.ph...ort_in_MIDlets

Regards,
r2j7

[traud]

Bluetooth is terrible unstable on my Nokia 6300i, so unstable I am not able to create a qualified bug report so far. And that MIDlet of mine even works on these old Symbian OS beasts. r2j7, I am unsure how to debug this. Emulator, System.err or should I go for paid support services?

Not even sure this issue is related to mine as I do not do any data exchange via L2CAP or RFCOMM. All I do is SDP and very often the connection is not dropped; and of course it does not happen always. Sometimes it forgets to close the connection or waits for something; I do not know.

[r2j7]

Hello traud,

sounds odd, seems to be rather serious for a Series 40 device.

The defined issue definitively requires further investigation. To do that, please submit a Support Request via Forum Nokia's Technical Support.

Regards,
r2j7