backendNodeId

A speculation rule set is either added through an inline <script> tag or through an external resource via the 'Speculation-Rules' HTTP header. For the first case, we include the BackendNodeId of the relevant <script> tag. For the second case, we include the external URL where the rule set was loaded from, and also RequestId if Network domain is enabled.

See also:

• https://wicg.github.io/nav-speculation/speculation-rules.html#speculation-rules-script

• https://wicg.github.io/nav-speculation/speculation-rules.html#speculation-rules-header