Fix sending of subscription errors. #2166
Merged
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Description of Changes
This is pulling out the server side changes that were originally in #2111.
Previously the code was not sending subscription errors for invalid queries (because we were treating those errors as generic internal errors). This fixes that. It also adds the query id to those subscription error messages, so that the clients aren't forced to track the request ids.
Expected complexity level and risk
1
Testing
This change is covered with some end-to-end tests in #2111.
Adding unit tests in the future would be good.