johnandersen777.bsky.social/atlibs-webrtc

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	<!-- The webrtc transport against a local guest (`webrtc-peer --origin <this page>`), no account, no PDS:
	     ?signal=<webrtc-peer url>&user=<ssh user>. Driven by tests/loopback.test.mjs. -->
	<script type="importmap">
	{
		"imports": {
			"age-encryption": "https://esm.sh/age-encryption@0.3.1",
			"@microsoft/dev-tunnels-ssh": "https://esm.sh/@microsoft/dev-tunnels-ssh@3.12.42",
			"buffer": "https://esm.sh/buffer@5.7.1",
			"@publicdomainrelay/atlibs-webrtc/": "./webrtc/",
			"@publicdomainrelay/atlibs/": "./atlibs/"
		}
	}
	</script>
	<script type="module">
		import * as age from "age-encryption";
		import * as devTunnelsSsh from "@microsoft/dev-tunnels-ssh";
		import { Buffer } from "buffer";
		import { Cubit } from "@publicdomainrelay/atlibs/cubit/index.js";
		import { WEBRTC_STATE, WebrtcHost, localSignals, webrtcUrl } from "@publicdomainrelay/atlibs-webrtc/index.js";

		const query = new URLSearchParams(location.search);
		const signals = localSignals(query.get("signal"));
		// The store holds the transport's state; host.calls as a page's hostCall would route them, and
		// host.fetchers() as runModule's fetchers (webrtc: URLs).
		const cubit = new Cubit({ ...WEBRTC_STATE });
		const host = new WebrtcHost({ store: cubit, events: () => signals.events(), signal: (input) => signals.signal(input), makePeer: (config) => new RTCPeerConnection(config), age, ssh: { ...devTunnelsSsh, Buffer } });
		cubit.call = (nsid, request) => (Object.hasOwn(host.calls, nsid) ? host.calls[nsid](request) : Promise.reject(new Error(`${nsid}: not served here`)));
		const fetchers = host.fetchers();
		cubit.fetch = ({ receipt, tag, path, ...request }) => fetchers["webrtc:"]({ ...request, url: webrtcUrl({ receipt }, tag, path) });
		cubit.sshKey = () => host.sshKey();
		cubit.sshExec = (command, user, stdin) => host.sshExec(command, user, stdin);
		// An unprivileged local sshd logs in only its own user; on a guest it is root.
		if (query.get("user")) cubit.emit({ ssh: { ...cubit.state.ssh, user: query.get("user") } });
		globalThis.webrtcCubit = cubit;
		document.title = "ready";
	</script>
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