python-zeroconf/test_zeroconf.py at master · jacobo3d/python-zeroconf · GitHub

Repository navigation

History

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

475

476

477

478

479

480

481

482

483

484

485

486

487

488

489

490

491

492

493

494

495

496

497

498

499

500

501

502

503

504

505

506

507

508

509

510

511

512

513

514

515

516

517

518

519

520

521

522

523

524

525

526

527

528

529

530

531

532

533

534

535

536

537

538

539

540

541

542

543

544

545

546

547

548

549

550

551

552

553

554

555

556

557

558

559

560

561

562

563

564

565

566

567

568

569

570

571

572

573

574

575

576

577

578

579

580

581

582

583

584

585

586

587

588

589

590

591

592

593

594

595

596

597

598

599

600

601

602

603

604

605

606

607

608

609

610

611

612

613

614

615

616

617

618

619

620

621

622

623

624

625

626

627

628

629

630

631

632

633

634

635

636

637

638

639

640

641

642

643

644

645

646

647

648

649

650

651

652

653

654

655

656

657

658

659

660

661

662

663

664

665

666

667

668

669

670

671

672

673

674

675

676

677

678

679

680

681

682

683

684

685

686

687

688

689

690

691

692

693

694

695

696

697

698

699

700

701

702

703

704

705

706

707

708

709

710

711

712

713

714

715

716

717

718

719

720

721

722

723

724

725

726

727

728

729

730

731

732

733

734

735

736

737

738

739

740

741

742

743

744

745

746

747

748

749

750

751

752

753

754

755

756

757

758

759

760

761

762

763

764

765

766

767

768

769

770

771

772

773

774

775

776

777

778

779

780

781

782

783

784

785

786

787

788

789

790

791

792

793

794

795

796

797

798

799

800

801

802

803

804

805

806

807

808

809

810

811

812

813

814

815

816

817

818

819

820

821

822

823

824

825

826

827

828

829

830

831

832

833

834

835

836

837

838

839

840

841

842

843

844

845

846

847

848

849

850

851

852

853

854

855

856

857

858

859

860

861

862

863

864

865

#!/usr/bin/env python

# -*- coding: utf-8 -*-

""" Unit tests for zeroconf.py """

import copy

import logging

import socket

import struct

import time

import unittest

from threading import Event

import zeroconf as r

from zeroconf import (

DNSHinfo,

DNSText,

ServiceBrowser,

ServiceInfo,

ServiceStateChange,

Zeroconf,

ZeroconfServiceTypes,

)

log = logging.getLogger('zeroconf')

original_logging_level = [None]

def setup_module():

original_logging_level[0] = log.level

log.setLevel(logging.DEBUG)

def teardown_module():

log.setLevel(original_logging_level[0])

class TestDunder(unittest.TestCase):

def test_dns_text_repr(self):

# There was an issue on Python 3 that prevented DNSText's repr

# from working when the text was longer than 10 bytes

text = DNSText('irrelevant', None, 0, 0, b'12345678901')

repr(text)

text = DNSText('irrelevant', None, 0, 0, b'123')

repr(text)

def test_dns_hinfo_repr_eq(self):

hinfo = DNSHinfo('irrelevant', r._TYPE_HINFO, 0, 0, 'cpu', 'os')

assert hinfo == hinfo

repr(hinfo)

def test_dns_pointer_repr(self):

pointer = r.DNSPointer(

'irrelevant', r._TYPE_PTR, r._CLASS_IN, r._DNS_TTL, '123')

repr(pointer)

def test_dns_address_repr(self):

address = r.DNSAddress('irrelevant', r._TYPE_SOA, r._CLASS_IN, 1, b'a')

repr(address)

def test_dns_question_repr(self):

question = r.DNSQuestion(

'irrelevant', r._TYPE_SRV, r._CLASS_IN | r._CLASS_UNIQUE)

repr(question)

assert not question != question

def test_dns_service_repr(self):

service = r.DNSService(

'irrelevant', r._TYPE_SRV, r._CLASS_IN, r._DNS_TTL, 0, 0, 80, b'a')

repr(service)

def test_dns_record_abc(self):

record = r.DNSRecord('irrelevant', r._TYPE_SRV, r._CLASS_IN, r._DNS_TTL)

self.assertRaises(r.AbstractMethodException, record.__eq__, record)

self.assertRaises(r.AbstractMethodException, record.write, None)

def test_service_info_dunder(self):

type_ = "_test-srvc-type._tcp.local."

name = "xxxyyy"

registration_name = "%s.%s" % (name, type_)

info = ServiceInfo(

type_, registration_name,

socket.inet_aton("10.0.1.2"), 80, 0, 0,

None, "ash-2.local.")

assert not info != info

repr(info)

def test_dns_outgoing_repr(self):

dns_outgoing = r.DNSOutgoing(r._FLAGS_QR_QUERY)

repr(dns_outgoing)

class PacketGeneration(unittest.TestCase):

def test_parse_own_packet_simple(self):

generated = r.DNSOutgoing(0)

r.DNSIncoming(generated.packet())

def test_parse_own_packet_simple_unicast(self):

generated = r.DNSOutgoing(0, 0)

r.DNSIncoming(generated.packet())

def test_parse_own_packet_flags(self):

generated = r.DNSOutgoing(r._FLAGS_QR_QUERY)

r.DNSIncoming(generated.packet())

def test_parse_own_packet_question(self):

generated = r.DNSOutgoing(r._FLAGS_QR_QUERY)

generated.add_question(r.DNSQuestion("testname.local.", r._TYPE_SRV,

r._CLASS_IN))

r.DNSIncoming(generated.packet())

def test_parse_own_packet_response(self):

generated = r.DNSOutgoing(r._FLAGS_QR_RESPONSE)

generated.add_answer_at_time(r.DNSService(

"æøå.local.", r._TYPE_SRV, r._CLASS_IN, r._DNS_TTL, 0, 0, 80, "foo.local."), 0)

parsed = r.DNSIncoming(generated.packet())

self.assertEqual(len(generated.answers), 1)

self.assertEqual(len(generated.answers), len(parsed.answers))

def test_match_question(self):

generated = r.DNSOutgoing(r._FLAGS_QR_QUERY)

question = r.DNSQuestion("testname.local.", r._TYPE_SRV, r._CLASS_IN)

generated.add_question(question)

parsed = r.DNSIncoming(generated.packet())

self.assertEqual(len(generated.questions), 1)

self.assertEqual(len(generated.questions), len(parsed.questions))

self.assertEqual(question, parsed.questions[0])

def test_suppress_answer(self):

query_generated = r.DNSOutgoing(r._FLAGS_QR_QUERY)

question = r.DNSQuestion("testname.local.", r._TYPE_SRV, r._CLASS_IN)

query_generated.add_question(question)

answer1 = r.DNSService(

"testname1.local.", r._TYPE_SRV, r._CLASS_IN, r._DNS_TTL, 0, 0, 80, "foo.local.")

staleanswer2 = r.DNSService(

"testname2.local.", r._TYPE_SRV, r._CLASS_IN, r._DNS_TTL/2, 0, 0, 80, "foo.local.")

answer2 = r.DNSService(

"testname2.local.", r._TYPE_SRV, r._CLASS_IN, r._DNS_TTL, 0, 0, 80, "foo.local.")

query_generated.add_answer_at_time(answer1, 0)

query_generated.add_answer_at_time(staleanswer2, 0)

query = r.DNSIncoming(query_generated.packet())

# Should be suppressed

response = r.DNSOutgoing(r._FLAGS_QR_RESPONSE)

response.add_answer(query, answer1)

assert len(response.answers) == 0

# Should not be suppressed, TTL in query is too short

response.add_answer(query, answer2)

assert len(response.answers) == 1

# Should not be suppressed, name is different

tmp = copy.copy(answer1)

tmp.name = "testname3.local."

response.add_answer(query, tmp)

assert len(response.answers) == 2

# Should not be suppressed, type is different

tmp = copy.copy(answer1)

tmp.type = r._TYPE_A

response.add_answer(query, tmp)

assert len(response.answers) == 3

# Should not be suppressed, class is different

tmp = copy.copy(answer1)

tmp.class_ = r._CLASS_NONE

response.add_answer(query, tmp)

assert len(response.answers) == 4

# ::TODO:: could add additional tests for DNSAddress, DNSHinfo, DNSPointer, DNSText, DNSService

def test_dns_hinfo(self):

generated = r.DNSOutgoing(0)

generated.add_additional_answer(

DNSHinfo('irrelevant', r._TYPE_HINFO, 0, 0, 'cpu', 'os'))

parsed = r.DNSIncoming(generated.packet())

self.assertEqual(parsed.answers[0].cpu, u'cpu')

self.assertEqual(parsed.answers[0].os, u'os')

generated = r.DNSOutgoing(0)

generated.add_additional_answer(

DNSHinfo('irrelevant', r._TYPE_HINFO, 0, 0, 'cpu', 'x' * 257))

self.assertRaises(r.NamePartTooLongException, generated.packet)

class PacketForm(unittest.TestCase):

def test_transaction_id(self):

"""ID must be zero in a DNS-SD packet"""

generated = r.DNSOutgoing(r._FLAGS_QR_QUERY)

bytes = generated.packet()

id = bytes[0] << 8 | bytes[1]

self.assertEqual(id, 0)

def test_query_header_bits(self):

generated = r.DNSOutgoing(r._FLAGS_QR_QUERY)

bytes = generated.packet()

flags = bytes[2] << 8 | bytes[3]

self.assertEqual(flags, 0x0)

def test_response_header_bits(self):

generated = r.DNSOutgoing(r._FLAGS_QR_RESPONSE)

bytes = generated.packet()

flags = bytes[2] << 8 | bytes[3]

self.assertEqual(flags, 0x8000)

def test_numbers(self):

generated = r.DNSOutgoing(r._FLAGS_QR_RESPONSE)

bytes = generated.packet()

(num_questions, num_answers, num_authorities,

num_additionals) = struct.unpack('!4H', bytes[4:12])

self.assertEqual(num_questions, 0)

self.assertEqual(num_answers, 0)

self.assertEqual(num_authorities, 0)

self.assertEqual(num_additionals, 0)

def test_numbers_questions(self):

generated = r.DNSOutgoing(r._FLAGS_QR_RESPONSE)

question = r.DNSQuestion("testname.local.", r._TYPE_SRV, r._CLASS_IN)

for i in range(10):

generated.add_question(question)

bytes = generated.packet()

(num_questions, num_answers, num_authorities,

num_additionals) = struct.unpack('!4H', bytes[4:12])

self.assertEqual(num_questions, 10)

self.assertEqual(num_answers, 0)

self.assertEqual(num_authorities, 0)

self.assertEqual(num_additionals, 0)

class Names(unittest.TestCase):

def test_long_name(self):

generated = r.DNSOutgoing(r._FLAGS_QR_RESPONSE)

question = r.DNSQuestion("this.is.a.very.long.name.with.lots.of.parts.in.it.local.",

r._TYPE_SRV, r._CLASS_IN)

generated.add_question(question)

r.DNSIncoming(generated.packet())

def test_exceedingly_long_name(self):

generated = r.DNSOutgoing(r._FLAGS_QR_RESPONSE)

name = "%slocal." % ("part." * 1000)

question = r.DNSQuestion(name, r._TYPE_SRV, r._CLASS_IN)

generated.add_question(question)

r.DNSIncoming(generated.packet())

def test_exceedingly_long_name_part(self):

name = "%s.local." % ("a" * 1000)

generated = r.DNSOutgoing(r._FLAGS_QR_RESPONSE)

question = r.DNSQuestion(name, r._TYPE_SRV, r._CLASS_IN)

generated.add_question(question)

self.assertRaises(r.NamePartTooLongException, generated.packet)

def test_same_name(self):

name = "paired.local."

generated = r.DNSOutgoing(r._FLAGS_QR_RESPONSE)

question = r.DNSQuestion(name, r._TYPE_SRV, r._CLASS_IN)

generated.add_question(question)

r.DNSIncoming(generated.packet())

def test_lots_of_names(self):

# instantiate a zeroconf instance

zc = Zeroconf(interfaces=['127.0.0.1'])

# create a bunch of servers

type_ = "_my-service._tcp.local."

name = 'a wonderful service'

server_count = 300

self.generate_many_hosts(zc, type_, name, server_count)

# verify that name changing works

self.verify_name_change(zc, type_, name, server_count)

# we are going to monkey patch the zeroconf send to check packet sizes

old_send = zc.send

# needs to be a list so that we can modify it in our phony send

longest_packet = [0, None]

def send(out, addr=r._MDNS_ADDR, port=r._MDNS_PORT):

"""Sends an outgoing packet."""

packet = out.packet()

if longest_packet[0] < len(packet):

longest_packet[0] = len(packet)

longest_packet[1] = out

old_send(out, addr=addr, port=port)

# monkey patch the zeroconf send

zc.send = send

# dummy service callback

def on_service_state_change(zeroconf, service_type, state_change, name):

pass

# start a browser

browser = ServiceBrowser(zc, type_, [on_service_state_change])

# wait until the browse request packet has maxed out in size

sleep_count = 0

while sleep_count < 100 and \

longest_packet[0] < r._MAX_MSG_ABSOLUTE - 100:

sleep_count += 1

time.sleep(0.1)

browser.cancel()

time.sleep(0.5)

import zeroconf

zeroconf.log.debug('sleep_count %d, sized %d',

sleep_count, longest_packet[0])

# now the browser has sent at least one request, verify the size

assert longest_packet[0] <= r._MAX_MSG_ABSOLUTE

assert longest_packet[0] >= r._MAX_MSG_ABSOLUTE - 100

# mock zeroconf's logger warning() and debug()

from unittest.mock import patch

patch_warn = patch('zeroconf.log.warning')

patch_debug = patch('zeroconf.log.debug')

mocked_log_warn = patch_warn.start()

mocked_log_debug = patch_debug.start()

# now that we have a long packet in our possession, let's verify the

# exception handling.

out = longest_packet[1]

out.data.append(b'\0' * 1000)

# mock the zeroconf logger and check for the correct logging backoff

call_counts = mocked_log_warn.call_count, mocked_log_debug.call_count

# try to send an oversized packet

zc.send(out)

assert mocked_log_warn.call_count == call_counts[0] + 1

assert mocked_log_debug.call_count == call_counts[0]

zc.send(out)

assert mocked_log_warn.call_count == call_counts[0] + 1

assert mocked_log_debug.call_count == call_counts[0] + 1

# force a receive of an oversized packet

packet = out.packet()

s = zc._respond_sockets[0]

# mock the zeroconf logger and check for the correct logging backoff

call_counts = mocked_log_warn.call_count, mocked_log_debug.call_count

# force receive on oversized packet

s.sendto(packet, 0, (r._MDNS_ADDR, r._MDNS_PORT))

time.sleep(2.0)

zeroconf.log.debug('warn %d debug %d was %s',

mocked_log_warn.call_count,

mocked_log_debug.call_count,

call_counts)

assert mocked_log_debug.call_count > call_counts[0]

# close our zeroconf which will close the sockets

zc.close()

# pop the big chunk off the end of the data and send on a closed socket

out.data.pop()

zc._GLOBAL_DONE = False

# mock the zeroconf logger and check for the correct logging backoff

call_counts = mocked_log_warn.call_count, mocked_log_debug.call_count

# send on a closed socket (force a socket error)

zc.send(out)

zeroconf.log.debug('warn %d debug %d was %s',

mocked_log_warn.call_count,

mocked_log_debug.call_count,

call_counts)

assert mocked_log_warn.call_count > call_counts[0]

assert mocked_log_debug.call_count > call_counts[0]

zc.send(out)

zeroconf.log.debug('warn %d debug %d was %s',

mocked_log_warn.call_count,

mocked_log_debug.call_count,

call_counts)

assert mocked_log_debug.call_count > call_counts[0] + 2

mocked_log_warn.stop()

mocked_log_debug.stop()

def verify_name_change(self, zc, type_, name, number_hosts):

desc = {'path': '/~paulsm/'}

info_service = ServiceInfo(

type_, '%s.%s' % (name, type_), socket.inet_aton("10.0.1.2"),

80, 0, 0, desc, "ash-2.local.")

# verify name conflict

self.assertRaises(

r.NonUniqueNameException,

zc.register_service, info_service)

zc.register_service(info_service, allow_name_change=True)

assert info_service.name.split('.')[0] == '%s-%d' % (

name, number_hosts + 1)

def generate_many_hosts(self, zc, type_, name, number_hosts):

records_per_server = 2

block_size = 25

number_hosts = int(((number_hosts - 1) / block_size + 1)) * block_size

for i in range(1, number_hosts + 1):

next_name = name if i == 1 else '%s-%d' % (name, i)

self.generate_host(zc, next_name, type_)

if i % block_size == 0:

sleep_count = 0

while sleep_count < 40 and \

i * records_per_server > len(

zc.cache.entries_with_name(type_)):

sleep_count += 1

time.sleep(0.05)

@staticmethod

def generate_host(zc, host_name, type_):

name = '.'.join((host_name, type_))

out = r.DNSOutgoing(r._FLAGS_QR_RESPONSE | r._FLAGS_AA)

out.add_answer_at_time(

r.DNSPointer(type_, r._TYPE_PTR, r._CLASS_IN,

r._DNS_TTL, name), 0)

out.add_answer_at_time(

r.DNSService(type_, r._TYPE_SRV, r._CLASS_IN,

r._DNS_TTL, 0, 0, 80,

name), 0)

zc.send(out)

class Framework(unittest.TestCase):

def test_launch_and_close(self):

rv = r.Zeroconf(interfaces=r.InterfaceChoice.All)

rv.close()

rv = r.Zeroconf(interfaces=r.InterfaceChoice.Default)

rv.close()

class Exceptions(unittest.TestCase):

browser = None

@classmethod

def setUpClass(cls):

cls.browser = Zeroconf(interfaces=['127.0.0.1'])

@classmethod

def tearDownClass(cls):

cls.browser.close()

cls.browser = None

def test_bad_service_info_name(self):

self.assertRaises(

r.BadTypeInNameException,

self.browser.get_service_info, "type", "type_not")

def test_bad_service_names(self):

bad_names_to_try = (

'',

'local',

'_tcp.local.',

'_udp.local.',

'._udp.local.',

'_@._tcp.local.',

'_A@._tcp.local.',

'_x--x._tcp.local.',

'_-x._udp.local.',

'_x-._tcp.local.',

'_22._udp.local.',

'_2-2._tcp.local.',

'_1234567890-abcde._udp.local.',

'\x00._x._udp.local.',

)

for name in bad_names_to_try:

self.assertRaises(

r.BadTypeInNameException,

self.browser.get_service_info, name, 'x.' + name)

def test_good_instance_names(self):

good_names_to_try = (

'.._x._tcp.local.',

'x.sub._http._tcp.local.',

'6d86f882b90facee9170ad3439d72a4d6ee9f511._zget._http._tcp.local.'

)

for name in good_names_to_try:

r.service_type_name(name)

def test_bad_types(self):

bad_names_to_try = (

'._x._tcp.local.',

'a' * 64 + '._sub._http._tcp.local.',

'a' * 62 + u'â._sub._http._tcp.local.',

)

for name in bad_names_to_try:

self.assertRaises(

r.BadTypeInNameException, r.service_type_name, name)

def test_bad_sub_types(self):

bad_names_to_try = (

'_sub._http._tcp.local.',

'._sub._http._tcp.local.',

'\x7f._sub._http._tcp.local.',

'\x1f._sub._http._tcp.local.',

)

for name in bad_names_to_try:

self.assertRaises(

r.BadTypeInNameException, r.service_type_name, name)

def test_good_service_names(self):

good_names_to_try = (

'_x._tcp.local.',

'_x._udp.local.',

'_12345-67890-abc._udp.local.',

'x._sub._http._tcp.local.',

'a' * 63 + '._sub._http._tcp.local.',

'a' * 61 + u'â._sub._http._tcp.local.',

)

for name in good_names_to_try:

r.service_type_name(name)

r.service_type_name('_one_two._tcp.local.', allow_underscores=True)

class TestDnsIncoming(unittest.TestCase):

def test_incoming_exception_handling(self):

generated = r.DNSOutgoing(0)

packet = generated.packet()

packet = packet[:8] + b'deadbeef' + packet[8:]

parsed = r.DNSIncoming(packet)

assert parsed.valid is False

def test_incoming_unknown_type(self):

generated = r.DNSOutgoing(0)

answer = r.DNSAddress('a', r._TYPE_SOA, r._CLASS_IN, 1, b'a')

generated.add_additional_answer(answer)

packet = generated.packet()

parsed = r.DNSIncoming(packet)

assert len(parsed.answers) == 0

assert parsed.is_query() != parsed.is_response()

def test_incoming_ipv6(self):

# ::TODO:: could use a test here if we add IPV6 record handling

# ie: _TYPE_AAAA

pass

class TestRegistrar(unittest.TestCase):

def test_ttl(self):

# instantiate a zeroconf instance

zc = Zeroconf(interfaces=['127.0.0.1'])

# service definition

type_ = "_test-srvc-type._tcp.local."

name = "xxxyyy"

registration_name = "%s.%s" % (name, type_)

desc = {'path': '/~paulsm/'}

info = ServiceInfo(

type_, registration_name,

socket.inet_aton("10.0.1.2"), 80, 0, 0,

desc, "ash-2.local.")

# we are going to monkey patch the zeroconf send to check packet sizes

old_send = zc.send

# needs to be a list so that we can modify it in our phony send

nbr_answers = [0, None]

nbr_additionals = [0, None]

nbr_authorities = [0, None]

def send(out, addr=r._MDNS_ADDR, port=r._MDNS_PORT):

"""Sends an outgoing packet."""

for answer, time_ in out.answers:

nbr_answers[0] += 1

assert answer.ttl == expected_ttl

for answer in out.additionals:

nbr_additionals[0] += 1

assert answer.ttl == expected_ttl

for answer in out.authorities:

nbr_authorities[0] += 1

assert answer.ttl == expected_ttl

old_send(out, addr=addr, port=port)

# monkey patch the zeroconf send

zc.send = send

# register service with default TTL

expected_ttl = r._DNS_TTL

zc.register_service(info)

assert nbr_answers[0] == 12 and nbr_additionals[0] == 0 and nbr_authorities[0] == 3

nbr_answers[0] = nbr_additionals[0] = nbr_authorities[0] = 0

# query

query = r.DNSOutgoing(r._FLAGS_QR_QUERY | r._FLAGS_AA)

query.add_question(r.DNSQuestion(info.type, r._TYPE_PTR, r._CLASS_IN))

query.add_question(r.DNSQuestion(info.name, r._TYPE_SRV, r._CLASS_IN))

query.add_question(r.DNSQuestion(info.name, r._TYPE_TXT, r._CLASS_IN))

query.add_question(r.DNSQuestion(info.server, r._TYPE_A, r._CLASS_IN))

zc.handle_query(query, r._MDNS_ADDR, r._MDNS_PORT)

assert nbr_answers[0] == 4 and nbr_additionals[0] == 1 and nbr_authorities[0] == 0

nbr_answers[0] = nbr_additionals[0] = nbr_authorities[0] = 0

# unregister

expected_ttl = 0

zc.unregister_service(info)

assert nbr_answers[0] == 12 and nbr_additionals[0] == 0 and nbr_authorities[0] == 0

nbr_answers[0] = nbr_additionals[0] = nbr_authorities[0] = 0

# register service with custom TTL

expected_ttl = r._DNS_TTL * 2

assert expected_ttl != r._DNS_TTL

zc.register_service(info, ttl=expected_ttl)

assert nbr_answers[0] == 12 and nbr_additionals[0] == 0 and nbr_authorities[0] == 3

nbr_answers[0] = nbr_additionals[0] = nbr_authorities[0] = 0

# query

query = r.DNSOutgoing(r._FLAGS_QR_QUERY | r._FLAGS_AA)

query.add_question(r.DNSQuestion(info.type, r._TYPE_PTR, r._CLASS_IN))

query.add_question(r.DNSQuestion(info.name, r._TYPE_SRV, r._CLASS_IN))

query.add_question(r.DNSQuestion(info.name, r._TYPE_TXT, r._CLASS_IN))

query.add_question(r.DNSQuestion(info.server, r._TYPE_A, r._CLASS_IN))

zc.handle_query(query, r._MDNS_ADDR, r._MDNS_PORT)

assert nbr_answers[0] == 4 and nbr_additionals[0] == 1 and nbr_authorities[0] == 0

nbr_answers[0] = nbr_additionals[0] = nbr_authorities[0] = 0

# unregister

expected_ttl = 0

zc.unregister_service(info)

assert nbr_answers[0] == 12 and nbr_additionals[0] == 0 and nbr_authorities[0] == 0

nbr_answers[0] = nbr_additionals[0] = nbr_authorities[0] = 0

class TestDNSCache(unittest.TestCase):

def test_order(self):

record1 = r.DNSAddress('a', r._TYPE_SOA, r._CLASS_IN, 1, b'a')

record2 = r.DNSAddress('a', r._TYPE_SOA, r._CLASS_IN, 1, b'b')

cache = r.DNSCache()

cache.add(record1)

cache.add(record2)

entry = r.DNSEntry('a', r._TYPE_SOA, r._CLASS_IN)

cached_record = cache.get(entry)

self.assertEqual(cached_record, record2)

class ServiceTypesQuery(unittest.TestCase):

def test_integration_with_listener(self):

type_ = "_test-srvc-type._tcp.local."

name = "xxxyyy"

registration_name = "%s.%s" % (name, type_)

zeroconf_registrar = Zeroconf(interfaces=['127.0.0.1'])

desc = {'path': '/~paulsm/'}

info = ServiceInfo(

type_, registration_name,

socket.inet_aton("10.0.1.2"), 80, 0, 0,

desc, "ash-2.local.")

zeroconf_registrar.register_service(info)

try:

service_types = ZeroconfServiceTypes.find(

interfaces=['127.0.0.1'], timeout=0.5)

assert type_ in service_types

service_types = ZeroconfServiceTypes.find(

zc=zeroconf_registrar, timeout=0.5)

assert type_ in service_types

finally:

zeroconf_registrar.close()

def test_integration_with_subtype_and_listener(self):

subtype_ = "_subtype._sub"

type_ = "_type._tcp.local."

name = "xxxyyy"

# Note: discovery returns only DNS-SD type not subtype

discovery_type = "%s.%s" % (subtype_, type_)

registration_name = "%s.%s" % (name, type_)

zeroconf_registrar = Zeroconf(interfaces=['127.0.0.1'])

desc = {'path': '/~paulsm/'}

info = ServiceInfo(

discovery_type, registration_name,

socket.inet_aton("10.0.1.2"), 80, 0, 0,

desc, "ash-2.local.")

zeroconf_registrar.register_service(info)

try:

service_types = ZeroconfServiceTypes.find(

interfaces=['127.0.0.1'], timeout=0.5)

assert discovery_type in service_types

service_types = ZeroconfServiceTypes.find(

zc=zeroconf_registrar, timeout=0.5)

assert discovery_type in service_types

finally:

zeroconf_registrar.close()

class ListenerTest(unittest.TestCase):

def test_integration_with_listener_class(self):

service_added = Event()

service_removed = Event()

subtype_name = "My special Subtype"

type_ = "_http._tcp.local."

subtype = subtype_name + "._sub." + type_

name = "xxxyyyæøå"

registration_name = "%s.%s" % (name, type_)

class MyListener:

def add_service(self, zeroconf, type, name):

zeroconf.get_service_info(type, name)

service_added.set()

def remove_service(self, zeroconf, type, name):

service_removed.set()

listener = MyListener()

zeroconf_browser = Zeroconf(interfaces=['127.0.0.1'])

zeroconf_browser.add_service_listener(subtype, listener)

properties = dict(

prop_none=None,

prop_string=b'a_prop',

prop_float=1.0,

prop_blank=b'a blanked string',

prop_true=1,

prop_false=0,

)

zeroconf_registrar = Zeroconf(interfaces=['127.0.0.1'])

desc = {'path': '/~paulsm/'}

desc.update(properties)

info_service = ServiceInfo(

subtype, registration_name,

socket.inet_aton("10.0.1.2"), 80, 0, 0,

desc, "ash-2.local.")

zeroconf_registrar.register_service(info_service)

try:

service_added.wait(1)

assert service_added.is_set()

# short pause to allow multicast timers to expire

time.sleep(2)

# clear the answer cache to force query

for record in zeroconf_browser.cache.entries():

zeroconf_browser.cache.remove(record)

# get service info without answer cache

info = zeroconf_browser.get_service_info(type_, registration_name)

assert info.properties[b'prop_none'] is False

assert info.properties[b'prop_string'] == properties['prop_string']

assert info.properties[b'prop_float'] is False

assert info.properties[b'prop_blank'] == properties['prop_blank']

assert info.properties[b'prop_true'] is True

assert info.properties[b'prop_false'] is False

info = zeroconf_browser.get_service_info(subtype, registration_name)

assert info.properties[b'prop_none'] is False

zeroconf_registrar.unregister_service(info_service)

service_removed.wait(1)

assert service_removed.is_set()

finally:

zeroconf_registrar.close()

zeroconf_browser.remove_service_listener(listener)

zeroconf_browser.close()

def test_integration():

service_added = Event()

service_removed = Event()

unexpected_ttl = Event()

got_query = Event()

type_ = "_http._tcp.local."

registration_name = "xxxyyy.%s" % type_

def on_service_state_change(zeroconf, service_type, state_change, name):

if name == registration_name:

if state_change is ServiceStateChange.Added:

service_added.set()

elif state_change is ServiceStateChange.Removed:

service_removed.set()

zeroconf_browser = Zeroconf(interfaces=['127.0.0.1'])

# we are going to monkey patch the zeroconf send to check packet sizes

old_send = zeroconf_browser.send

time_offset = 0

def current_time_millis():

"""Current system time in milliseconds"""

return time.time() * 1000 + time_offset * 1000

expected_ttl = r._DNS_TTL

# needs to be a list so that we can modify it in our phony send

nbr_queries = [0, None]

def send(out, addr=r._MDNS_ADDR, port=r._MDNS_PORT):

"""Sends an outgoing packet."""

pout = r.DNSIncoming(out.packet())

for answer in pout.answers:

nbr_queries[0] += 1

if not answer.ttl > expected_ttl / 2:

unexpected_ttl.set()

got_query.set()

old_send(out, addr=addr, port=port)

# monkey patch the zeroconf send

zeroconf_browser.send = send

# monkey patch the zeroconf current_time_millis

r.current_time_millis = current_time_millis

service_added = Event()

service_removed = Event()

browser = ServiceBrowser(zeroconf_browser, type_, [on_service_state_change])

zeroconf_registrar = Zeroconf(interfaces=['127.0.0.1'])

desc = {'path': '/~paulsm/'}

info = ServiceInfo(

type_, registration_name,

socket.inet_aton("10.0.1.2"), 80, 0, 0,

desc, "ash-2.local.")

zeroconf_registrar.register_service(info)

try:

service_added.wait(1)

assert service_added.is_set()

sleep_count = 0

while nbr_queries[0] < 50:

time_offset += expected_ttl / 4

zeroconf_browser.notify_all()

sleep_count += 1

got_query.wait(1)

got_query.clear()

assert not unexpected_ttl.is_set()

# Don't remove service, allow close() to cleanup

finally:

zeroconf_registrar.close()

browser.cancel()

zeroconf_browser.close()

python-zeroconf/test_zeroconf.py at master · jacobo3d/python-zeroconf · GitHub

Repository navigation

Expand file tree

Breadcrumbs

test_zeroconf.py

Latest commit

History

Breadcrumbs

test_zeroconf.py

File metadata and controls