Python MQTT-SN client crashes with qos = -1

[ralight]

migrated from Bugzilla #463425
status UNCONFIRMED severity normal in component RSMB for 1.4
Reported in version unspecified on platform PC
Assigned to: Ian Craggs

On 2015-03-30 05:57:28 -0400, Joao Mauricio wrote:

When QoS is set to -1:

aclient.connect()
aclient.register(�jkjkjkjkj�)
aclient.publish(1, �aaaa�, -1)

Python MQTT-SN client crashes with the following error:

Traceback (most recent call last):
File �./MQTTSNregister.py�, line 33, in
aclient.publish(1, �aaaa�, -1)
File �/root/rsmb/rsmb/src/MQTTSClient/Python/MQTTSNclient.py�, line 180, in publish
self.sock.send(publish.pack())
File �/root/rsmb/rsmb/src/MQTTSClient/Python/MQTTSN.py�, line 491, in pack
buffer = self.Flags.pack()
File �/root/rsmb/rsmb/src/MQTTSClient/Python/MQTTSN.py�, line 107, in pack
(self.Will << 3) | (self.CleanSession << 2) | self.TopicIdType )
ValueError: chr() arg not in range(256)

However, using:

aclient.connect()
aclient.register(�jkjkjkjkj�)
aclient.publish(1, �aaaa�, 0)

everything works as expected.