Host conformance test

Point this page at a Malleable HTML File host to check that it obeys the wire contract in the specification (sections 3-10). It exercises the protocol, not the snapshot algorithm; the fixtures cover that.

Serve this file from the host you want to test, and treat it as disposable. The spec requires exact origin validation on every save, so a successful save can only be tested from the host's own origin. Drop this file into the host's document root and open it there. On a plain or cookie host it writes to a scratch document beside itself (below), overwriting it if it exists. On a token host the save token binds to this file, so the test targets and overwrites the page itself: deploy a throwaway copy there and reload from a fresh copy to re-run.

A throwaway document on this host's origin that the test may overwrite. Defaults to a scratch path next to this page (or, with a token, this page itself). Delete it when done.

Token hosts save to /_/save/{token}. Auto-filled if this page was served with a savetoken.