Re: [spec-reviews] Strawman spec review for upgrade insecure requests (#54)

> +face when transitioning from plaintext HTTP to secure connections.
> +
> +### ISSUE: Goal 1 Unclear
> +
> +Section 1.1, Goal 1:
> +
> +> Authors should be able to ensure that all content requested by a given page
> +> loads successfully, and securely. Mixed content blocking should not break
> +> pages as a result of migrating to a secure origin.
> +
> +This seems somewhat too ambitious for the spec. If third-party content on
> +a page does not support HTTPS or stops supporting HTTPS, the page author cannot
> +ensure that the content is loaded securely or at all. Inevitably, moving to
> +a secure origin causes problems with mixed content blocking if the page has
> +third party content that doesn't yet support HTTPS, a problem which the spec
> +does not address.

https://github.com/w3c/webappsec/commit/0c0a5f5c0c78016104a1d0ce81a647923387eb9e

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