Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Was putting this off until the untilAttach, but pulled forward due to https://github.com/ably/realtime/issues/589
For connected errors in upgrades, I did the workaround described in https://github.com/ably/realtime/issues/587#issuecomment-227158648 - ie syncing with the new (-1) connectionSerial after a failed upgrade. This is a bit hacky, but fixes the problem from that issue for now. If we decide to change realtime behaviour (eg to not require a sync in the case of a failed upgrade), then we can change it then.