This is referring to something else: to detect whether the backend server host itself is inside or outside Iran. TLS doesn't prevent the backend network from reading the URL of course.

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bawolff 2 hours ago | parent [-]

Well it would if things are setup according to best practises (i.e. use TLS between the backend connections). Presumably most people dont do that.

	▲	tgma 39 minutes ago \| parent [-]
		Again, you are assuming a normal situation. The point is the country itself is operating (or has a heavy grip and perhaps even subsidizes) the backend CDN and enforcing that stuff in a rudimentary way. "TLS between backend connections" usually involves termination and decryption on the frontend webserver and re-encryption of the upstream traffic, whatever it may be.