sdptool give Operation already in progress on ubuntu 12.04 LTS after continuous usage

golden_boy615 · 06-28-2013, 01:06 PM

Hi,
I use sdptool to get sdp of a bluetooth device like this for multiple times:

Quote:

sdptool -i hci0 browse --xml XX:XX:XX:XX:XX:XX

At first it works fine but it gaves me this error after continuous multiple usage:

Quote:

Failed to connect to SDP server on XX:XX:XX:XX:XX:XX: Operation already in progress

I have to say when I change bluetooth mac address to some other phones or devices (ex. YY:YY:YY:YY:YY:YY)
or
when I change locale hci device to hci1 for example
the sdptool works fine but when I came back to previous XX:XX:XX:XX:XX:XX address on previous hci0, it gives me "Operation already in progress" again and again
for more information :

Quote:

l2ping XX:XX:XX:XX:XX:XX
Can't connect: Operation already in progress

Quote:

cat /etc/*release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04.2 LTS"
NAME="Ubuntu"
VERSION="12.04.2 LTS, Precise Pangolin"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu precise (12.04.2 LTS)"
VERSION_ID="12.04"

Quote:

uname -a
Linux e-pc 3.5.0-27-generic #46~precise1-Ubuntu SMP Tue Mar 26 19:33:21 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

Quote:

sdptool -h
sdptool - SDP tool v4.98
.
.

Thanks for any help

golden_boy615 · 07-05-2013, 05:51 PM

I think I found a solution for my problem I don't no why this works but works!!!!

Quote:

#cat sdp.sh

Code:

#!/bin/bash
while true
do 
    hciconfig  hci0 down
    hciconfig  hci0 up
    sdptool -i hci0 search --bdaddr 00:17:E3:F4:B3:24 --xml OPUSH
    hciconfig  hci0 down
    hciconfig  hci0 up

    sdptool -i hci0 brows --xml 4C:8B:EF:A1:57:19
done

yes, I simply down and up hci device then that error never happens.
but can any body tell me why this happen and what is the better way?