Additional HTTP Headers

This setting specifies additional HTTP headers, which will be appended to existing headers when the Dashboard HTML is rendered.

The additional header list is created by merging:

  • Headers from the current dashboard

  • Any headers from the current template dashboard, if the current dashboard is being loaded by a template.

  • Any headers specified by the Additional HTTP Headers property of the Web UI plugin settings.

If any header names are duplicated during the merge, the header from the current dashboard will take precedence, and the duplicate header from the template will be discarded.

Finally, this header list is merged with any other headers set by the Web UI itself. Any duplicated headers are retained, to ensure that additional headers do not overwrite essential headers.

Configuration

Each row in the Additional HTTP Headers table indicates a single HTTP header that will be appended to the existing headers when the HTML of the dashboard is rendered.

Field Description

Field Name

Name. Indicates header name.

name

Value Expression. Expression must evaluate to a string, which is processed as the header value. Expression is evaluated at the moment the dashboard is requested.

Value Expression Resolution Environment:

valueExpression

Default Context

Dashboard Context

Default Data Table

None

Default Row

0

Environment Variables

Standard variables only

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