OptionalheadersHTTP headers. Content-Type: application/json is set by default if not provided.
OptionaljsonParse the response as JSON. When false, returns raw text. Defaults to true.
OptionalmethodHTTP method. Defaults to 'GET'.
OptionalqueryQuery parameters appended to the URL as a query string.
OptionalsignalOptional caller cancellation, independent of the per-attempt timeout.
OptionaltimeoutPer-attempt timeout in milliseconds, including response body reads. Defaults to the backend's constructor value (30 000 ms).
RPC endpoint URL.
Options for HttpBackend.createRequest.