Problem Statement

Sentry's browser SDKs pick up <meta name="sentry-trace" .../> and <meta name="baggage" /> tags in a users' HTML when starting the initial pageload transaction. This is how SSR transactions can be connected to their frontend pageload transactions. We use this mechanism internally in our Full-Stack framework SDKs (NextJS, Remix, SvelteKit) but also users can add this to their own SSR setup.

Right now, this feature is neither well documented nor easy to use on the server side.

One use case for the Node SDK: An express app using our Node SDK that renders HTML pages.