[PROTON-2034] [python] Selector string sent as illegal binary value if non-unicode string is used

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: proton-c-0.28.0
• Component/s: python-binding
• Assignee: Kim van der Riet
• Reporter: Kim van der Riet
• Created: 15/Apr/19 20:52
• Updated: 10/May/19 17:15
• Resolved: 15/Apr/19 21:04

Description

If a selector is provided via a non-unicode string, an illegal binary value is sent on the wire. The selector filter type is explicitly defined as being a string typed value. Some AMQP servers (e.g. Artemis, ActiveMQ) reject or mishandle the illegal value, rightfully expecting to be sent a string.

In Python 2.x, this is an easy mistake to make, as strings are non-unicode by default. The solution for the client to convert Python binary types to unicode before sending on the wire to the server.