[ISSUE #4286] Fix response body is not recognised as JSON in query WebHook config endpoints #4287
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Fixes #4286.
Motivation
The response body is not recognised as JSON in Postman, and the Content-Type header missing:
Modifications
That's because
NetUtils.sendSuccessResponseHeaders(httpExchange);is in front ofhttpExchange.getResponseHeaders().add(CONTENT_TYPE, APPLICATION_JSON);and headers are sent out before they are set correctly.Documentation