When a dashboard loads data from a protected JSON endpoint, authentication headers can be attached in the onBeginProcessData event.

Add custom headers before the data request.
var report = Stimulsoft.Report.StiReport.createNewDashboard();

report.onBeginProcessData = function (args) {
    if (args.database === "JSON" && args.command === "GetData" &&
        args.pathData && args.pathData.indexOf("/dashboard/ProtectedDemo.json") >= 0) {
        args.headers.push({ key: "X-Auth-Token", value: "*YOUR TOKEN*" });
    }
};

report.loadFile("../dashboard/DBSsimp.mrt");
viewer.report = report;

How it works. The engine applies the headers to its data request, so the dashboard can read endpoints behind token or session protection.
Auf dem Screenshot unten Sie können das Ergebnis des Beispiel-Codes ansehen:

Supply Custom Headers for Json Database

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