[JSONRPC-8] Null message string in errored reply causes NPE

Fri, 10 Nov 2017 20:02:10 +0000

There are two parts to this issue:
1. When a responder session throws an exception with no message string, the resulting error reply also does not have any error message string. This seems to be a violation of the json-rpc spec, section 5.2. (Only data may be omitted.)
2. When a requester session receives an error reply with no message string, it throws an NPE while parsing the message string.

Need to fix both sides.

Make responder always add some error message string.
Make requester resilient to receiving null message strings.

OpenDaylight JIRA

[JSONRPC-8] Null message string in errored reply causes NPE