Package: bluez
Version: 4.99-2
Severity: normal
Tags: patch
Please disable the pnat plugin. It breaks any application that tries to
run an RFCOMM server. According to upstream:
There should be absolutely no reason for Ubuntu have this plugin
enabled or even compiled. You might wanna file a bug to them to
disable it. The only place where it makes sense to be compiled is
in Nokia's Maemo Harmattan platform. For everything else it should
be disabled (as it is by default).
-- Johan Hedberg on the linux-bluetooth mailing list
<http://www.spinics.net/lists/linux-bluetooth/msg14290.html>
The symptom is that when an RFCOMM client attempts to connect to a
listening RFCOMM server:
- the client application sees "Connection reset by peer" when sending
data;
- the server never sees the connection; and
- the following appears in the (Debian) server's syslog:
bluetoothd[6190]: Unable to spawn pnatd: Failed to execute child
process "/usr/bin/phonet-at" (No such file or directory)
STEPS TO REPRODUCE:
1. Get two machines running Debian. One will be the server and the
other will be the client.
2. On both machines, install python-bluez.
3. Find out the server's Bluetooth address (e.g. using "hcitool dev")
4. Pair the client and server.
5. On the server, run the following:
cd /usr/share/doc/python-bluez/examples/simple/
python rfcomm-server.py
6. On the client, run the following, using the server's address:
cd /usr/share/doc/python-bluez/examples/simple/
python rfcomm-client.py xx:xx:xx:xx:xx:xx
7. You should see this:
Searching for SampleServer on xx:xx:xx:xx:xx:xx
connecting to "SampleServer" on xx:xx:xx:xx:xx:xx
connected. type stuff
8. Type a few lines of text
What _should_ happen is that we should see something like this on the
server:
Waiting for connection on RFCOMM channel 1
Accepted connection from ('yy:yy:yy:yy:yy:yy', 1)
received [asdf]
received [asdf]
received [azxvc]
What _actually_ happens is that we see nothing on the server, and we see
the following on the client:
Searching for SampleServer on xx:xx:xx:xx:xx:xx
connecting to "SampleServer" on xx:xx:xx:xx:xx:xx
connected. type stuff
asdf
Traceback (most recent call last):
File "rfcomm-client.py", line 43, in <module>
sock.send(data)
File "<string>", line 5, in send
bluetooth.btcommon.BluetoothError: (104, 'Connection reset by peer')
The following patch fixes this bug:
---[ Begin patch ]---
diff --git a/debian/rules b/debian/rules
index c1bcccb..980f18a 100755
--- a/debian/rules
+++ b/debian/rules
@@ -18,7 +18,6 @@ DEB_CONFIGURE_EXTRA_FLAGS := \
--enable-time \
--enable-alert \
--enable-health \
- --enable-pnat \
--enable-gatt-example \
--enable-gstreamer \
--enable-alsa \
---[ End patch ]---
A workaround is to add the following to /etc/bluetooth/main.conf:
DisablePlugins = pnat
Cheers,
- Dwayne
-- System Information:
Debian Release: wheezy/sid
APT prefers testing
APT policy: (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: armel
i386
Kernel: Linux 3.2.0-3-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_CA.utf8, LC_CTYPE=en_CA.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages bluez depends on:
ii dbus 1.6.0-1
ii kmod 9-2
ii libc6 2.13-35
ii libcap-ng0 0.6.6-2
ii libdbus-1-3 1.6.8-1
ii libglib2.0-0 2.32.3-1
ii libreadline6 6.2-8
ii libudev0 175-7
ii libusb-0.1-4 2:0.1.12-20
ii lsb-base 4.1+Debian7
ii python-dbus 1.1.1-1
ii python-gi 3.2.2-1
ii udev 175-7
bluez recommends no packages.
bluez suggests no packages.
-- no debconf information
--
Dwayne C. Litzenberger <dl...@dlitz.net>
OpenPGP: 19E1 1FE8 B3CF F273 ED17 4A24 928C EC13 39C2 5CF7
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