When I send multiple request in batch array, I get correctly results. When I send single request, I get the result without array brackets. The specification is a bit confusing, but I expect this is incorrect. It is certainly breaking my client expectations :-D Some examples follow.

Correct with 2 requests:

Request

[{"id":1849316922322121888,"jsonrpc":"2.0","method":"Observer.SwitchCamera","params":{}},{"id":732138300415643188,"jsonrpc":"2.0","method":"Observer.SwitchCamera","params":{}}]

Response
[{"jsonrpc":"2.0","result":null,"id":1849316922322121888},{"jsonrpc":"2.0","result":null,"id":732138300415643188}]

Request
[{"id":2419378167359262235,"jsonrpc":"2.0","method":"Observer.SwitchCamera","params":{}}]

Response missing array brackets
{"jsonrpc":"2.0","result":null,"id":2419378167359262235}