[kunal649]

Why:
getFullURL and the browser tracing request URL logic were resolving URLs against location.origin. That breaks in two important cases:

• In sandboxed iframes and data: pages, location.origin can be the string "null". new URL() parses the base before the input, so it throws even for absolute URLs. This caused XHR spans to lose url.full and fetch spans to lose url.domain.
• Relative URLs without a leading slash (for example users on /dashboard/settings) were resolved against the wrong base, producing incorrect url.full values.

We now resolve against location.href, which is valid in opaque-origin contexts and preserves the correct relative URL behavior for normal pages.

How to review:
Start with:

• packages/browser/src/tracing/utils.ts
• packages/browser/src/tracing/request.ts

and the regression coverage in:

• packages/browser/test/tracing/request.test.ts

The key things to check are the URL normalization behavior for opaque origins and relative paths without a leading slash.

Unsure about:
Whether the empty-URL breadcrumb behavior should be handled in a separate follow-up, since it is related but intentionally not included in this fix.

Ref #13168

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Tests use raw span attribute strings

Low Severity

This was flagged because the review guidelines require test assertions on span attributes to use @sentry/conventions constants rather than string literals. The new checks read url.full and url.domain as raw strings.

Additional Locations (1)

• packages/browser/test/tracing/request.test.ts#L380-L381

 

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