import { assertEquals } from "../../../test_util/std/testing/asserts.ts"; import { deferred } from "../../../test_util/std/async/deferred.ts"; const errorDeferred = deferred(); const closeDeferred = deferred(); const listener = Deno.listen({ port: 4509 }); console.log("READY"); const httpConn = Deno.serveHttp(await listener.accept()); const { request, respondWith } = (await httpConn.nextRequest())!; const { response, socket } = Deno.upgradeWebSocket(request, { idleTimeout: 1, }); socket.onerror = (e) => { assertEquals((e as ErrorEvent).message, "No response from ping frame."); errorDeferred.resolve(); }; socket.onclose = (e) => { assertEquals(e.reason, "No response from ping frame."); closeDeferred.resolve(); }; await respondWith(response); await errorDeferred; await closeDeferred; listener.close();