await started.stop();

});

it("truncates service name exceeding 63-byte DNS label limit", async () => {

const longHostname = "app-41627eae5842473f9e05f139ea307277-7f9477f4d6-lqqzf";

enableAdvertiserUnitMode(longHostname);

const destroy = vi.fn().mockResolvedValue(undefined);

const advertise = vi.fn().mockResolvedValue(undefined);

mockCiaoService({ advertise, destroy });

const started = await startAdvertiser({

gatewayPort: 18789,

sshPort: 2222,

});

const [gatewayCall] = createService.mock.calls as Array<[ServiceCall]>;

const serviceName = gatewayCall?.[0]?.name as string;

const hostname = gatewayCall?.[0]?.hostname as string;

// Both name and hostname must be within the 63-byte DNS label limit

expect(new TextEncoder().encode(serviceName).byteLength).toBeLessThanOrEqual(63);

expect(new TextEncoder().encode(hostname).byteLength).toBeLessThanOrEqual(63);

await started.stop();

});

it("truncates multi-byte hostname within DNS label byte limit", async () => {

// 21 CJK characters = 63 bytes in UTF-8, adding " (OpenClaw)" pushes over

const cjkHostname = "你".repeat(21);

enableAdvertiserUnitMode(cjkHostname);

const destroy = vi.fn().mockResolvedValue(undefined);

const advertise = vi.fn().mockResolvedValue(undefined);

mockCiaoService({ advertise, destroy });

const started = await startAdvertiser({

gatewayPort: 18789,

sshPort: 2222,

});

const [gatewayCall] = createService.mock.calls as Array<[ServiceCall]>;

const serviceName = gatewayCall?.[0]?.name as string;

expect(new TextEncoder().encode(serviceName).byteLength).toBeLessThanOrEqual(63);

// Should not end with a replacement character from incomplete multi-byte truncation

expect(serviceName).not.toMatch(/\uFFFD$/);

await started.stop();

});

it("uses system hostname when OPENCLAW_MDNS_HOSTNAME is unset", async () => {

// Allow advertiser to run in unit tests.

delete process.env.VITEST;