Domain fronting for subscription URLs#22
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anywhere://add-proxy?host=<realHost>&link=<frontedURL> fetches a subscription through a CDN front domain: TLS SNI is the link host (front domain), HTTP Host is the real origin. A dedicated URLSessionDelegate validates server trust against the front domain. frontHost is persisted so refreshes keep fronting. link may be plain or base64. Works via deep link and paste; no host => unchanged. Closes NodePassProject#21
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Implements the domain-fronting scheme agreed in #21.
link(front domain, also the connect target); HTTPHost:=host(the real CDN origin).URLSessionDelegatevalidates server trust against the front domain — no blind certificate acceptance.hostis persisted on the subscription (frontHost), so auto-refreshes keep fronting. Backward-compatible: nohost⇒ unchanged behavior, old persisted subscriptions decode fine.linkmay be plain or base64-encoded. Works both as a deep link and pasted into the Add Proxy link field.anywhere://add-proxy(host/link split + base64) lives in one sharedAnywhereProxyLinktype, reused by the deep-link handler and the paste path.Tested on device against a real Cloud-Run-fronted subscription.
Closes #21