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1 /* | |
2 * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. | |
3 * | |
4 * Use of this source code is governed by a BSD-style license | |
5 * that can be found in the LICENSE file in the root of the source | |
6 * tree. An additional intellectual property rights grant can be found | |
7 * in the file PATENTS. All contributing project authors may | |
8 * be found in the AUTHORS file in the root of the source tree. | |
9 */ | |
10 | |
11 #include <errno.h> | |
12 #include <stdarg.h> | |
13 #include <stdio.h> | |
14 | |
15 #include <memory> | |
16 #include <string> | |
17 #include <vector> | |
18 | |
19 #include "webrtc/base/bind.h" | |
20 #include "webrtc/base/copyonwritebuffer.h" | |
21 #include "webrtc/base/criticalsection.h" | |
22 #include "webrtc/base/gunit.h" | |
23 #include "webrtc/base/helpers.h" | |
24 #include "webrtc/base/messagehandler.h" | |
25 #include "webrtc/base/messagequeue.h" | |
26 #include "webrtc/base/ssladapter.h" | |
27 #include "webrtc/base/thread.h" | |
28 #include "webrtc/media/base/mediachannel.h" | |
29 #include "webrtc/media/base/mediaconstants.h" | |
30 #include "webrtc/media/sctp/sctpdataengine.h" | |
31 | |
32 namespace cricket { | |
33 enum { | |
34 MSG_PACKET = 1, | |
35 }; | |
36 | |
37 // Fake NetworkInterface that sends/receives sctp packets. The one in | |
38 // webrtc/media/base/fakenetworkinterface.h only works with rtp/rtcp. | |
39 class SctpFakeNetworkInterface : public MediaChannel::NetworkInterface, | |
40 public rtc::MessageHandler { | |
41 public: | |
42 explicit SctpFakeNetworkInterface(rtc::Thread* thread) | |
43 : thread_(thread), | |
44 dest_(NULL) { | |
45 } | |
46 | |
47 void SetDestination(DataMediaChannel* dest) { dest_ = dest; } | |
48 | |
49 protected: | |
50 // Called to send raw packet down the wire (e.g. SCTP an packet). | |
51 virtual bool SendPacket(rtc::CopyOnWriteBuffer* packet, | |
52 const rtc::PacketOptions& options) { | |
53 LOG(LS_VERBOSE) << "SctpFakeNetworkInterface::SendPacket"; | |
54 | |
55 rtc::CopyOnWriteBuffer* buffer = new rtc::CopyOnWriteBuffer(*packet); | |
56 thread_->Post(RTC_FROM_HERE, this, MSG_PACKET, | |
57 rtc::WrapMessageData(buffer)); | |
58 LOG(LS_VERBOSE) << "SctpFakeNetworkInterface::SendPacket, Posted message."; | |
59 return true; | |
60 } | |
61 | |
62 // Called when a raw packet has been recieved. This passes the data to the | |
63 // code that will interpret the packet. e.g. to get the content payload from | |
64 // an SCTP packet. | |
65 virtual void OnMessage(rtc::Message* msg) { | |
66 LOG(LS_VERBOSE) << "SctpFakeNetworkInterface::OnMessage"; | |
67 std::unique_ptr<rtc::CopyOnWriteBuffer> buffer( | |
68 static_cast<rtc::TypedMessageData<rtc::CopyOnWriteBuffer*>*>( | |
69 msg->pdata)->data()); | |
70 if (dest_) { | |
71 dest_->OnPacketReceived(buffer.get(), rtc::PacketTime()); | |
72 } | |
73 delete msg->pdata; | |
74 } | |
75 | |
76 // Unsupported functions required to exist by NetworkInterface. | |
77 // TODO(ldixon): Refactor parent NetworkInterface class so these are not | |
78 // required. They are RTC specific and should be in an appropriate subclass. | |
79 virtual bool SendRtcp(rtc::CopyOnWriteBuffer* packet, | |
80 const rtc::PacketOptions& options) { | |
81 LOG(LS_WARNING) << "Unsupported: SctpFakeNetworkInterface::SendRtcp."; | |
82 return false; | |
83 } | |
84 virtual int SetOption(SocketType type, rtc::Socket::Option opt, | |
85 int option) { | |
86 LOG(LS_WARNING) << "Unsupported: SctpFakeNetworkInterface::SetOption."; | |
87 return 0; | |
88 } | |
89 virtual void SetDefaultDSCPCode(rtc::DiffServCodePoint dscp) { | |
90 LOG(LS_WARNING) << "Unsupported: SctpFakeNetworkInterface::SetOption."; | |
91 } | |
92 | |
93 private: | |
94 // Not owned by this class. | |
95 rtc::Thread* thread_; | |
96 DataMediaChannel* dest_; | |
97 }; | |
98 | |
99 // This is essentially a buffer to hold recieved data. It stores only the last | |
100 // received data. Calling OnDataReceived twice overwrites old data with the | |
101 // newer one. | |
102 // TODO(ldixon): Implement constraints, and allow new data to be added to old | |
103 // instead of replacing it. | |
104 class SctpFakeDataReceiver : public sigslot::has_slots<> { | |
105 public: | |
106 SctpFakeDataReceiver() : received_(false) {} | |
107 | |
108 void Clear() { | |
109 received_ = false; | |
110 last_data_ = ""; | |
111 last_params_ = ReceiveDataParams(); | |
112 } | |
113 | |
114 virtual void OnDataReceived(const ReceiveDataParams& params, | |
115 const char* data, | |
116 size_t length) { | |
117 received_ = true; | |
118 last_data_ = std::string(data, length); | |
119 last_params_ = params; | |
120 } | |
121 | |
122 bool received() const { return received_; } | |
123 std::string last_data() const { return last_data_; } | |
124 ReceiveDataParams last_params() const { return last_params_; } | |
125 | |
126 private: | |
127 bool received_; | |
128 std::string last_data_; | |
129 ReceiveDataParams last_params_; | |
130 }; | |
131 | |
132 class SignalReadyToSendObserver : public sigslot::has_slots<> { | |
133 public: | |
134 SignalReadyToSendObserver() : signaled_(false), writable_(false) {} | |
135 | |
136 void OnSignaled(bool writable) { | |
137 signaled_ = true; | |
138 writable_ = writable; | |
139 } | |
140 | |
141 bool IsSignaled(bool writable) { | |
142 return signaled_ && (writable_ == writable); | |
143 } | |
144 | |
145 private: | |
146 bool signaled_; | |
147 bool writable_; | |
148 }; | |
149 | |
150 class SignalChannelClosedObserver : public sigslot::has_slots<> { | |
151 public: | |
152 SignalChannelClosedObserver() {} | |
153 void BindSelf(SctpDataMediaChannel* channel) { | |
154 channel->SignalStreamClosedRemotely.connect( | |
155 this, &SignalChannelClosedObserver::OnStreamClosed); | |
156 } | |
157 void OnStreamClosed(uint32_t stream) { streams_.push_back(stream); } | |
158 | |
159 int StreamCloseCount(uint32_t stream) { | |
160 return std::count(streams_.begin(), streams_.end(), stream); | |
161 } | |
162 | |
163 bool WasStreamClosed(uint32_t stream) { | |
164 return std::find(streams_.begin(), streams_.end(), stream) | |
165 != streams_.end(); | |
166 } | |
167 | |
168 private: | |
169 std::vector<uint32_t> streams_; | |
170 }; | |
171 | |
172 class SignalChannelClosedReopener : public sigslot::has_slots<> { | |
173 public: | |
174 SignalChannelClosedReopener(SctpDataMediaChannel* channel, | |
175 SctpDataMediaChannel* peer) | |
176 : channel_(channel), peer_(peer) {} | |
177 | |
178 void OnStreamClosed(int stream) { | |
179 StreamParams p(StreamParams::CreateLegacy(stream)); | |
180 channel_->AddSendStream(p); | |
181 channel_->AddRecvStream(p); | |
182 peer_->AddSendStream(p); | |
183 peer_->AddRecvStream(p); | |
184 streams_.push_back(stream); | |
185 } | |
186 | |
187 int StreamCloseCount(int stream) { | |
188 return std::count(streams_.begin(), streams_.end(), stream); | |
189 } | |
190 | |
191 private: | |
192 SctpDataMediaChannel* channel_; | |
193 SctpDataMediaChannel* peer_; | |
194 std::vector<int> streams_; | |
195 }; | |
196 | |
197 // SCTP Data Engine testing framework. | |
198 class SctpDataMediaChannelTest : public testing::Test, | |
199 public sigslot::has_slots<> { | |
200 protected: | |
201 // usrsctp uses the NSS random number generator on non-Android platforms, | |
202 // so we need to initialize SSL. | |
203 static void SetUpTestCase() { | |
204 } | |
205 | |
206 virtual void SetUp() { engine_.reset(new SctpDataEngine()); } | |
207 | |
208 void SetupConnectedChannels() { | |
209 net1_.reset(new SctpFakeNetworkInterface(rtc::Thread::Current())); | |
210 net2_.reset(new SctpFakeNetworkInterface(rtc::Thread::Current())); | |
211 recv1_.reset(new SctpFakeDataReceiver()); | |
212 recv2_.reset(new SctpFakeDataReceiver()); | |
213 chan1_ready_to_send_count_ = 0; | |
214 chan2_ready_to_send_count_ = 0; | |
215 chan1_.reset(CreateChannel(net1_.get(), recv1_.get())); | |
216 chan1_->set_debug_name_for_testing("chan1/connector"); | |
217 chan1_->SignalReadyToSend.connect( | |
218 this, &SctpDataMediaChannelTest::OnChan1ReadyToSend); | |
219 chan2_.reset(CreateChannel(net2_.get(), recv2_.get())); | |
220 chan2_->set_debug_name_for_testing("chan2/listener"); | |
221 chan2_->SignalReadyToSend.connect( | |
222 this, &SctpDataMediaChannelTest::OnChan2ReadyToSend); | |
223 // Setup two connected channels ready to send and receive. | |
224 net1_->SetDestination(chan2_.get()); | |
225 net2_->SetDestination(chan1_.get()); | |
226 | |
227 LOG(LS_VERBOSE) << "Channel setup ----------------------------- "; | |
228 AddStream(1); | |
229 AddStream(2); | |
230 | |
231 LOG(LS_VERBOSE) << "Connect the channels -----------------------------"; | |
232 // chan1 wants to setup a data connection. | |
233 chan1_->SetReceive(true); | |
234 // chan1 will have sent chan2 a request to setup a data connection. After | |
235 // chan2 accepts the offer, chan2 connects to chan1 with the following. | |
236 chan2_->SetReceive(true); | |
237 chan2_->SetSend(true); | |
238 // Makes sure that network packets are delivered and simulates a | |
239 // deterministic and realistic small timing delay between the SetSend calls. | |
240 ProcessMessagesUntilIdle(); | |
241 | |
242 // chan1 and chan2 are now connected so chan1 enables sending to complete | |
243 // the creation of the connection. | |
244 chan1_->SetSend(true); | |
245 } | |
246 | |
247 virtual void TearDown() { | |
248 channel1()->SetSend(false); | |
249 channel2()->SetSend(false); | |
250 | |
251 // Process messages until idle to prevent a sent packet from being dropped | |
252 // and causing memory leaks (not being deleted by the receiver). | |
253 ProcessMessagesUntilIdle(); | |
254 } | |
255 | |
256 bool AddStream(int ssrc) { | |
257 bool ret = true; | |
258 StreamParams p(StreamParams::CreateLegacy(ssrc)); | |
259 ret = ret && chan1_->AddSendStream(p); | |
260 ret = ret && chan1_->AddRecvStream(p); | |
261 ret = ret && chan2_->AddSendStream(p); | |
262 ret = ret && chan2_->AddRecvStream(p); | |
263 return ret; | |
264 } | |
265 | |
266 SctpDataMediaChannel* CreateChannel(SctpFakeNetworkInterface* net, | |
267 SctpFakeDataReceiver* recv) { | |
268 cricket::MediaConfig config; | |
269 SctpDataMediaChannel* channel = static_cast<SctpDataMediaChannel*>( | |
270 engine_->CreateChannel(DCT_SCTP, config)); | |
271 channel->SetInterface(net); | |
272 // When data is received, pass it to the SctpFakeDataReceiver. | |
273 channel->SignalDataReceived.connect( | |
274 recv, &SctpFakeDataReceiver::OnDataReceived); | |
275 return channel; | |
276 } | |
277 | |
278 bool SendData(SctpDataMediaChannel* chan, | |
279 uint32_t ssrc, | |
280 const std::string& msg, | |
281 SendDataResult* result) { | |
282 SendDataParams params; | |
283 params.ssrc = ssrc; | |
284 | |
285 return chan->SendData(params, rtc::CopyOnWriteBuffer( | |
286 &msg[0], msg.length()), result); | |
287 } | |
288 | |
289 bool ReceivedData(const SctpFakeDataReceiver* recv, | |
290 uint32_t ssrc, | |
291 const std::string& msg) { | |
292 return (recv->received() && | |
293 recv->last_params().ssrc == ssrc && | |
294 recv->last_data() == msg); | |
295 } | |
296 | |
297 bool ProcessMessagesUntilIdle() { | |
298 rtc::Thread* thread = rtc::Thread::Current(); | |
299 while (!thread->empty()) { | |
300 rtc::Message msg; | |
301 if (thread->Get(&msg, rtc::Thread::kForever)) { | |
302 thread->Dispatch(&msg); | |
303 } | |
304 } | |
305 return !thread->IsQuitting(); | |
306 } | |
307 | |
308 SctpDataMediaChannel* channel1() { return chan1_.get(); } | |
309 SctpDataMediaChannel* channel2() { return chan2_.get(); } | |
310 SctpFakeDataReceiver* receiver1() { return recv1_.get(); } | |
311 SctpFakeDataReceiver* receiver2() { return recv2_.get(); } | |
312 | |
313 int channel1_ready_to_send_count() { return chan1_ready_to_send_count_; } | |
314 int channel2_ready_to_send_count() { return chan2_ready_to_send_count_; } | |
315 private: | |
316 std::unique_ptr<SctpDataEngine> engine_; | |
317 std::unique_ptr<SctpFakeNetworkInterface> net1_; | |
318 std::unique_ptr<SctpFakeNetworkInterface> net2_; | |
319 std::unique_ptr<SctpFakeDataReceiver> recv1_; | |
320 std::unique_ptr<SctpFakeDataReceiver> recv2_; | |
321 std::unique_ptr<SctpDataMediaChannel> chan1_; | |
322 std::unique_ptr<SctpDataMediaChannel> chan2_; | |
323 | |
324 int chan1_ready_to_send_count_; | |
325 int chan2_ready_to_send_count_; | |
326 | |
327 void OnChan1ReadyToSend(bool send) { | |
328 if (send) | |
329 ++chan1_ready_to_send_count_; | |
330 } | |
331 void OnChan2ReadyToSend(bool send) { | |
332 if (send) | |
333 ++chan2_ready_to_send_count_; | |
334 } | |
335 }; | |
336 | |
337 // Verifies that SignalReadyToSend is fired. | |
338 TEST_F(SctpDataMediaChannelTest, SignalReadyToSend) { | |
339 SetupConnectedChannels(); | |
340 | |
341 SignalReadyToSendObserver signal_observer_1; | |
342 SignalReadyToSendObserver signal_observer_2; | |
343 | |
344 channel1()->SignalReadyToSend.connect(&signal_observer_1, | |
345 &SignalReadyToSendObserver::OnSignaled); | |
346 channel2()->SignalReadyToSend.connect(&signal_observer_2, | |
347 &SignalReadyToSendObserver::OnSignaled); | |
348 | |
349 SendDataResult result; | |
350 ASSERT_TRUE(SendData(channel1(), 1, "hello?", &result)); | |
351 EXPECT_EQ(SDR_SUCCESS, result); | |
352 EXPECT_TRUE_WAIT(ReceivedData(receiver2(), 1, "hello?"), 1000); | |
353 ASSERT_TRUE(SendData(channel2(), 2, "hi chan1", &result)); | |
354 EXPECT_EQ(SDR_SUCCESS, result); | |
355 EXPECT_TRUE_WAIT(ReceivedData(receiver1(), 2, "hi chan1"), 1000); | |
356 | |
357 EXPECT_TRUE_WAIT(signal_observer_1.IsSignaled(true), 1000); | |
358 EXPECT_TRUE_WAIT(signal_observer_2.IsSignaled(true), 1000); | |
359 } | |
360 | |
361 TEST_F(SctpDataMediaChannelTest, SendData) { | |
362 SetupConnectedChannels(); | |
363 | |
364 SendDataResult result; | |
365 LOG(LS_VERBOSE) << "chan1 sending: 'hello?' -----------------------------"; | |
366 ASSERT_TRUE(SendData(channel1(), 1, "hello?", &result)); | |
367 EXPECT_EQ(SDR_SUCCESS, result); | |
368 EXPECT_TRUE_WAIT(ReceivedData(receiver2(), 1, "hello?"), 1000); | |
369 LOG(LS_VERBOSE) << "recv2.received=" << receiver2()->received() | |
370 << ", recv2.last_params.ssrc=" | |
371 << receiver2()->last_params().ssrc | |
372 << ", recv2.last_params.timestamp=" | |
373 << receiver2()->last_params().ssrc | |
374 << ", recv2.last_params.seq_num=" | |
375 << receiver2()->last_params().seq_num | |
376 << ", recv2.last_data=" << receiver2()->last_data(); | |
377 | |
378 LOG(LS_VERBOSE) << "chan2 sending: 'hi chan1' -----------------------------"; | |
379 ASSERT_TRUE(SendData(channel2(), 2, "hi chan1", &result)); | |
380 EXPECT_EQ(SDR_SUCCESS, result); | |
381 EXPECT_TRUE_WAIT(ReceivedData(receiver1(), 2, "hi chan1"), 1000); | |
382 LOG(LS_VERBOSE) << "recv1.received=" << receiver1()->received() | |
383 << ", recv1.last_params.ssrc=" | |
384 << receiver1()->last_params().ssrc | |
385 << ", recv1.last_params.timestamp=" | |
386 << receiver1()->last_params().ssrc | |
387 << ", recv1.last_params.seq_num=" | |
388 << receiver1()->last_params().seq_num | |
389 << ", recv1.last_data=" << receiver1()->last_data(); | |
390 } | |
391 | |
392 // Sends a lot of large messages at once and verifies SDR_BLOCK is returned. | |
393 TEST_F(SctpDataMediaChannelTest, SendDataBlocked) { | |
394 SetupConnectedChannels(); | |
395 | |
396 SendDataResult result; | |
397 SendDataParams params; | |
398 params.ssrc = 1; | |
399 | |
400 std::vector<char> buffer(1024 * 64, 0); | |
401 | |
402 for (size_t i = 0; i < 100; ++i) { | |
403 channel1()->SendData( | |
404 params, rtc::CopyOnWriteBuffer(&buffer[0], buffer.size()), &result); | |
405 if (result == SDR_BLOCK) | |
406 break; | |
407 } | |
408 | |
409 EXPECT_EQ(SDR_BLOCK, result); | |
410 } | |
411 | |
412 TEST_F(SctpDataMediaChannelTest, ClosesRemoteStream) { | |
413 SetupConnectedChannels(); | |
414 SignalChannelClosedObserver chan_1_sig_receiver, chan_2_sig_receiver; | |
415 chan_1_sig_receiver.BindSelf(channel1()); | |
416 chan_2_sig_receiver.BindSelf(channel2()); | |
417 | |
418 SendDataResult result; | |
419 ASSERT_TRUE(SendData(channel1(), 1, "hello?", &result)); | |
420 EXPECT_EQ(SDR_SUCCESS, result); | |
421 EXPECT_TRUE_WAIT(ReceivedData(receiver2(), 1, "hello?"), 1000); | |
422 ASSERT_TRUE(SendData(channel2(), 2, "hi chan1", &result)); | |
423 EXPECT_EQ(SDR_SUCCESS, result); | |
424 EXPECT_TRUE_WAIT(ReceivedData(receiver1(), 2, "hi chan1"), 1000); | |
425 | |
426 // Close channel 1. Channel 2 should notify us. | |
427 channel1()->RemoveSendStream(1); | |
428 EXPECT_TRUE_WAIT(chan_2_sig_receiver.WasStreamClosed(1), 1000); | |
429 } | |
430 | |
431 TEST_F(SctpDataMediaChannelTest, ClosesTwoRemoteStreams) { | |
432 SetupConnectedChannels(); | |
433 AddStream(3); | |
434 SignalChannelClosedObserver chan_1_sig_receiver, chan_2_sig_receiver; | |
435 chan_1_sig_receiver.BindSelf(channel1()); | |
436 chan_2_sig_receiver.BindSelf(channel2()); | |
437 | |
438 SendDataResult result; | |
439 ASSERT_TRUE(SendData(channel1(), 1, "hello?", &result)); | |
440 EXPECT_EQ(SDR_SUCCESS, result); | |
441 EXPECT_TRUE_WAIT(ReceivedData(receiver2(), 1, "hello?"), 1000); | |
442 ASSERT_TRUE(SendData(channel2(), 2, "hi chan1", &result)); | |
443 EXPECT_EQ(SDR_SUCCESS, result); | |
444 EXPECT_TRUE_WAIT(ReceivedData(receiver1(), 2, "hi chan1"), 1000); | |
445 | |
446 // Close two streams on one side. | |
447 channel2()->RemoveSendStream(2); | |
448 channel2()->RemoveSendStream(3); | |
449 EXPECT_TRUE_WAIT(chan_1_sig_receiver.WasStreamClosed(2), 1000); | |
450 EXPECT_TRUE_WAIT(chan_1_sig_receiver.WasStreamClosed(3), 1000); | |
451 } | |
452 | |
453 TEST_F(SctpDataMediaChannelTest, ClosesStreamsOnBothSides) { | |
454 SetupConnectedChannels(); | |
455 AddStream(3); | |
456 AddStream(4); | |
457 SignalChannelClosedObserver chan_1_sig_receiver, chan_2_sig_receiver; | |
458 chan_1_sig_receiver.BindSelf(channel1()); | |
459 chan_2_sig_receiver.BindSelf(channel2()); | |
460 | |
461 SendDataResult result; | |
462 ASSERT_TRUE(SendData(channel1(), 1, "hello?", &result)); | |
463 EXPECT_EQ(SDR_SUCCESS, result); | |
464 EXPECT_TRUE_WAIT(ReceivedData(receiver2(), 1, "hello?"), 1000); | |
465 ASSERT_TRUE(SendData(channel2(), 2, "hi chan1", &result)); | |
466 EXPECT_EQ(SDR_SUCCESS, result); | |
467 EXPECT_TRUE_WAIT(ReceivedData(receiver1(), 2, "hi chan1"), 1000); | |
468 | |
469 // Close one stream on channel1(), while closing three streams on | |
470 // channel2(). They will conflict (only one side can close anything at a | |
471 // time, apparently). Test the resolution of the conflict. | |
472 channel1()->RemoveSendStream(1); | |
473 | |
474 channel2()->RemoveSendStream(2); | |
475 channel2()->RemoveSendStream(3); | |
476 channel2()->RemoveSendStream(4); | |
477 EXPECT_TRUE_WAIT(chan_2_sig_receiver.WasStreamClosed(1), 1000); | |
478 EXPECT_TRUE_WAIT(chan_1_sig_receiver.WasStreamClosed(2), 1000); | |
479 EXPECT_TRUE_WAIT(chan_1_sig_receiver.WasStreamClosed(3), 1000); | |
480 EXPECT_TRUE_WAIT(chan_1_sig_receiver.WasStreamClosed(4), 1000); | |
481 } | |
482 | |
483 TEST_F(SctpDataMediaChannelTest, EngineSignalsRightChannel) { | |
484 SetupConnectedChannels(); | |
485 EXPECT_TRUE_WAIT(channel1()->socket() != NULL, 1000); | |
486 struct socket *sock = const_cast<struct socket*>(channel1()->socket()); | |
487 int prior_count = channel1_ready_to_send_count(); | |
488 SctpDataMediaChannel::SendThresholdCallback(sock, 0); | |
489 EXPECT_GT(channel1_ready_to_send_count(), prior_count); | |
490 } | |
491 | |
492 TEST_F(SctpDataMediaChannelTest, RefusesHighNumberedChannels) { | |
493 SetupConnectedChannels(); | |
494 EXPECT_TRUE(AddStream(kMaxSctpSid)); | |
495 EXPECT_FALSE(AddStream(kMaxSctpSid + 1)); | |
496 } | |
497 | |
498 // Flaky, see webrtc:4453. | |
499 TEST_F(SctpDataMediaChannelTest, DISABLED_ReusesAStream) { | |
500 // Shut down channel 1, then open it up again for reuse. | |
501 SetupConnectedChannels(); | |
502 SendDataResult result; | |
503 SignalChannelClosedObserver chan_2_sig_receiver; | |
504 chan_2_sig_receiver.BindSelf(channel2()); | |
505 | |
506 ASSERT_TRUE(SendData(channel1(), 1, "hello?", &result)); | |
507 EXPECT_EQ(SDR_SUCCESS, result); | |
508 EXPECT_TRUE_WAIT(ReceivedData(receiver2(), 1, "hello?"), 1000); | |
509 | |
510 channel1()->RemoveSendStream(1); | |
511 EXPECT_TRUE_WAIT(chan_2_sig_receiver.WasStreamClosed(1), 1000); | |
512 // Channel 1 is gone now. | |
513 | |
514 // Create a new channel 1. | |
515 AddStream(1); | |
516 ASSERT_TRUE(SendData(channel1(), 1, "hi?", &result)); | |
517 EXPECT_EQ(SDR_SUCCESS, result); | |
518 EXPECT_TRUE_WAIT(ReceivedData(receiver2(), 1, "hi?"), 1000); | |
519 channel1()->RemoveSendStream(1); | |
520 EXPECT_TRUE_WAIT(chan_2_sig_receiver.StreamCloseCount(1) == 2, 1000); | |
521 } | |
522 | |
523 } // namespace cricket | |
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