"use strict"; const defaultOriginAttributes = {}; const mainThread = Services.tm.currentThread; const overrideService = Cc[ "@mozilla.org/network/native-dns-override;1" ].getService(Ci.nsINativeDNSResolverOverride); class Listener { constructor() { this.promise = new Promise(resolve => { this.resolve = resolve; }); } onLookupComplete(inRequest, inRecord, inStatus) { this.resolve([inRequest, inRecord, inStatus]); } then() { return this.promise.then.apply(this.promise, arguments); } } Listener.prototype.QueryInterface = ChromeUtils.generateQI(["nsIDNSListener"]); const DOMAIN_IDN = "bücher.org"; const ACE_IDN = "xn--bcher-kva.org"; const ADDR1 = "127.0.0.1"; const ADDR2 = "::1"; add_task(async function test_dns_localhost() { let listener = new Listener(); Services.dns.asyncResolve( "localhost", Ci.nsIDNSService.RESOLVE_TYPE_DEFAULT, 0, null, // resolverInfo listener, mainThread, defaultOriginAttributes ); let [, inRecord] = await listener; inRecord.QueryInterface(Ci.nsIDNSAddrRecord); let answer = inRecord.getNextAddrAsString(); Assert.ok(answer == ADDR1 || answer == ADDR2); }); add_task(async function test_idn_cname() { let listener = new Listener(); Services.dns.asyncResolve( DOMAIN_IDN, Ci.nsIDNSService.RESOLVE_TYPE_DEFAULT, Ci.nsIDNSService.RESOLVE_CANONICAL_NAME, null, // resolverInfo listener, mainThread, defaultOriginAttributes ); let [, inRecord] = await listener; inRecord.QueryInterface(Ci.nsIDNSAddrRecord); Assert.equal(inRecord.canonicalName, ACE_IDN, "IDN is returned as punycode"); }); add_task( { skip_if: () => Services.appinfo.processType != Ci.nsIXULRuntime.PROCESS_TYPE_DEFAULT, }, async function test_long_domain() { let listener = new Listener(); let domain = "a".repeat(253); overrideService.addIPOverride(domain, "1.2.3.4"); Services.dns.asyncResolve( domain, Ci.nsIDNSService.RESOLVE_TYPE_DEFAULT, Ci.nsIDNSService.RESOLVE_CANONICAL_NAME, null, // resolverInfo listener, mainThread, defaultOriginAttributes ); let [, , inStatus] = await listener; Assert.equal(inStatus, Cr.NS_OK); listener = new Listener(); domain = "a".repeat(254); overrideService.addIPOverride(domain, "1.2.3.4"); if (mozinfo.socketprocess_networking) { // When using the socket process, the call fails asynchronously. Services.dns.asyncResolve( domain, Ci.nsIDNSService.RESOLVE_TYPE_DEFAULT, Ci.nsIDNSService.RESOLVE_CANONICAL_NAME, null, // resolverInfo listener, mainThread, defaultOriginAttributes ); let [, , inStatus1] = await listener; Assert.equal(inStatus1, Cr.NS_ERROR_UNKNOWN_HOST); } else { Assert.throws( () => { Services.dns.asyncResolve( domain, Ci.nsIDNSService.RESOLVE_TYPE_DEFAULT, Ci.nsIDNSService.RESOLVE_CANONICAL_NAME, null, // resolverInfo listener, mainThread, defaultOriginAttributes ); }, /NS_ERROR_UNKNOWN_HOST/, "Should throw for large domains" ); } } );