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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "net/socket/tcp_client_socket.h" | |
6 | |
7 #include "base/basictypes.h" | |
8 #include "base/memory/ref_counted.h" | |
9 #include "base/memory/scoped_ptr.h" | |
10 #include "net/base/address_list.h" | |
11 #include "net/base/io_buffer.h" | |
12 #include "net/base/net_errors.h" | |
13 #include "net/base/test_completion_callback.h" | |
14 #include "net/base/winsock_init.h" | |
15 #include "net/dns/mock_host_resolver.h" | |
16 #include "net/log/net_log.h" | |
17 #include "net/log/net_log_unittest.h" | |
18 #include "net/socket/client_socket_factory.h" | |
19 #include "net/socket/tcp_listen_socket.h" | |
20 #include "testing/gtest/include/gtest/gtest.h" | |
21 #include "testing/platform_test.h" | |
22 | |
23 namespace net { | |
24 | |
25 namespace { | |
26 | |
27 const char kServerReply[] = "HTTP/1.1 404 Not Found"; | |
28 | |
29 enum ClientSocketTestTypes { | |
30 TCP, | |
31 SCTP | |
32 }; | |
33 | |
34 } // namespace | |
35 | |
36 class TransportClientSocketTest | |
37 : public StreamListenSocket::Delegate, | |
38 public ::testing::TestWithParam<ClientSocketTestTypes> { | |
39 public: | |
40 TransportClientSocketTest() | |
41 : listen_port_(0), | |
42 socket_factory_(ClientSocketFactory::GetDefaultFactory()), | |
43 close_server_socket_on_next_send_(false) { | |
44 } | |
45 | |
46 virtual ~TransportClientSocketTest() { | |
47 } | |
48 | |
49 // Implement StreamListenSocket::Delegate methods | |
50 void DidAccept(StreamListenSocket* server, | |
51 scoped_ptr<StreamListenSocket> connection) override { | |
52 connected_sock_.reset( | |
53 static_cast<TCPListenSocket*>(connection.release())); | |
54 } | |
55 void DidRead(StreamListenSocket*, const char* str, int len) override { | |
56 // TODO(dkegel): this might not be long enough to tickle some bugs. | |
57 connected_sock_->Send(kServerReply, arraysize(kServerReply) - 1, | |
58 false /* Don't append line feed */); | |
59 if (close_server_socket_on_next_send_) | |
60 CloseServerSocket(); | |
61 } | |
62 void DidClose(StreamListenSocket* sock) override {} | |
63 | |
64 // Testcase hooks | |
65 void SetUp() override; | |
66 | |
67 void CloseServerSocket() { | |
68 // delete the connected_sock_, which will close it. | |
69 connected_sock_.reset(); | |
70 } | |
71 | |
72 void PauseServerReads() { | |
73 connected_sock_->PauseReads(); | |
74 } | |
75 | |
76 void ResumeServerReads() { | |
77 connected_sock_->ResumeReads(); | |
78 } | |
79 | |
80 int DrainClientSocket(IOBuffer* buf, | |
81 uint32 buf_len, | |
82 uint32 bytes_to_read, | |
83 TestCompletionCallback* callback); | |
84 | |
85 void SendClientRequest(); | |
86 | |
87 void set_close_server_socket_on_next_send(bool close) { | |
88 close_server_socket_on_next_send_ = close; | |
89 } | |
90 | |
91 protected: | |
92 uint16 listen_port_; | |
93 TestNetLog net_log_; | |
94 ClientSocketFactory* const socket_factory_; | |
95 scoped_ptr<StreamSocket> sock_; | |
96 | |
97 private: | |
98 scoped_ptr<TCPListenSocket> listen_sock_; | |
99 scoped_ptr<TCPListenSocket> connected_sock_; | |
100 bool close_server_socket_on_next_send_; | |
101 }; | |
102 | |
103 void TransportClientSocketTest::SetUp() { | |
104 ::testing::TestWithParam<ClientSocketTestTypes>::SetUp(); | |
105 | |
106 // Find a free port to listen on | |
107 scoped_ptr<TCPListenSocket> sock; | |
108 uint16 port; | |
109 // Range of ports to listen on. Shouldn't need to try many. | |
110 const uint16 kMinPort = 10100; | |
111 const uint16 kMaxPort = 10200; | |
112 #if defined(OS_WIN) | |
113 EnsureWinsockInit(); | |
114 #endif | |
115 for (port = kMinPort; port < kMaxPort; port++) { | |
116 sock = TCPListenSocket::CreateAndListen("127.0.0.1", port, this); | |
117 if (sock.get()) | |
118 break; | |
119 } | |
120 ASSERT_TRUE(sock.get() != NULL); | |
121 listen_sock_ = sock.Pass(); | |
122 listen_port_ = port; | |
123 | |
124 AddressList addr; | |
125 // MockHostResolver resolves everything to 127.0.0.1. | |
126 scoped_ptr<HostResolver> resolver(new MockHostResolver()); | |
127 HostResolver::RequestInfo info(HostPortPair("localhost", listen_port_)); | |
128 TestCompletionCallback callback; | |
129 int rv = resolver->Resolve( | |
130 info, DEFAULT_PRIORITY, &addr, callback.callback(), NULL, BoundNetLog()); | |
131 CHECK_EQ(ERR_IO_PENDING, rv); | |
132 rv = callback.WaitForResult(); | |
133 CHECK_EQ(rv, OK); | |
134 sock_ = | |
135 socket_factory_->CreateTransportClientSocket(addr, | |
136 &net_log_, | |
137 NetLog::Source()); | |
138 } | |
139 | |
140 int TransportClientSocketTest::DrainClientSocket( | |
141 IOBuffer* buf, uint32 buf_len, | |
142 uint32 bytes_to_read, TestCompletionCallback* callback) { | |
143 int rv = OK; | |
144 uint32 bytes_read = 0; | |
145 | |
146 while (bytes_read < bytes_to_read) { | |
147 rv = sock_->Read(buf, buf_len, callback->callback()); | |
148 EXPECT_TRUE(rv >= 0 || rv == ERR_IO_PENDING); | |
149 | |
150 if (rv == ERR_IO_PENDING) | |
151 rv = callback->WaitForResult(); | |
152 | |
153 EXPECT_GE(rv, 0); | |
154 bytes_read += rv; | |
155 } | |
156 | |
157 return static_cast<int>(bytes_read); | |
158 } | |
159 | |
160 void TransportClientSocketTest::SendClientRequest() { | |
161 const char request_text[] = "GET / HTTP/1.0\r\n\r\n"; | |
162 scoped_refptr<IOBuffer> request_buffer( | |
163 new IOBuffer(arraysize(request_text) - 1)); | |
164 TestCompletionCallback callback; | |
165 int rv; | |
166 | |
167 memcpy(request_buffer->data(), request_text, arraysize(request_text) - 1); | |
168 rv = sock_->Write( | |
169 request_buffer.get(), arraysize(request_text) - 1, callback.callback()); | |
170 EXPECT_TRUE(rv >= 0 || rv == ERR_IO_PENDING); | |
171 | |
172 if (rv == ERR_IO_PENDING) | |
173 rv = callback.WaitForResult(); | |
174 EXPECT_EQ(rv, static_cast<int>(arraysize(request_text) - 1)); | |
175 } | |
176 | |
177 // TODO(leighton): Add SCTP to this list when it is ready. | |
178 INSTANTIATE_TEST_CASE_P(StreamSocket, | |
179 TransportClientSocketTest, | |
180 ::testing::Values(TCP)); | |
181 | |
182 TEST_P(TransportClientSocketTest, Connect) { | |
183 TestCompletionCallback callback; | |
184 EXPECT_FALSE(sock_->IsConnected()); | |
185 | |
186 int rv = sock_->Connect(callback.callback()); | |
187 | |
188 TestNetLog::CapturedEntryList net_log_entries; | |
189 net_log_.GetEntries(&net_log_entries); | |
190 EXPECT_TRUE( | |
191 LogContainsBeginEvent(net_log_entries, 0, NetLog::TYPE_SOCKET_ALIVE)); | |
192 EXPECT_TRUE( | |
193 LogContainsBeginEvent(net_log_entries, 1, NetLog::TYPE_TCP_CONNECT)); | |
194 if (rv != OK) { | |
195 ASSERT_EQ(rv, ERR_IO_PENDING); | |
196 rv = callback.WaitForResult(); | |
197 EXPECT_EQ(rv, OK); | |
198 } | |
199 | |
200 EXPECT_TRUE(sock_->IsConnected()); | |
201 net_log_.GetEntries(&net_log_entries); | |
202 EXPECT_TRUE( | |
203 LogContainsEndEvent(net_log_entries, -1, NetLog::TYPE_TCP_CONNECT)); | |
204 | |
205 sock_->Disconnect(); | |
206 EXPECT_FALSE(sock_->IsConnected()); | |
207 } | |
208 | |
209 TEST_P(TransportClientSocketTest, IsConnected) { | |
210 scoped_refptr<IOBuffer> buf(new IOBuffer(4096)); | |
211 TestCompletionCallback callback; | |
212 uint32 bytes_read; | |
213 | |
214 EXPECT_FALSE(sock_->IsConnected()); | |
215 EXPECT_FALSE(sock_->IsConnectedAndIdle()); | |
216 int rv = sock_->Connect(callback.callback()); | |
217 if (rv != OK) { | |
218 ASSERT_EQ(rv, ERR_IO_PENDING); | |
219 rv = callback.WaitForResult(); | |
220 EXPECT_EQ(rv, OK); | |
221 } | |
222 EXPECT_TRUE(sock_->IsConnected()); | |
223 EXPECT_TRUE(sock_->IsConnectedAndIdle()); | |
224 | |
225 // Send the request and wait for the server to respond. | |
226 SendClientRequest(); | |
227 | |
228 // Drain a single byte so we know we've received some data. | |
229 bytes_read = DrainClientSocket(buf.get(), 1, 1, &callback); | |
230 ASSERT_EQ(bytes_read, 1u); | |
231 | |
232 // Socket should be considered connected, but not idle, due to | |
233 // pending data. | |
234 EXPECT_TRUE(sock_->IsConnected()); | |
235 EXPECT_FALSE(sock_->IsConnectedAndIdle()); | |
236 | |
237 bytes_read = DrainClientSocket( | |
238 buf.get(), 4096, arraysize(kServerReply) - 2, &callback); | |
239 ASSERT_EQ(bytes_read, arraysize(kServerReply) - 2); | |
240 | |
241 // After draining the data, the socket should be back to connected | |
242 // and idle. | |
243 EXPECT_TRUE(sock_->IsConnected()); | |
244 EXPECT_TRUE(sock_->IsConnectedAndIdle()); | |
245 | |
246 // This time close the server socket immediately after the server response. | |
247 set_close_server_socket_on_next_send(true); | |
248 SendClientRequest(); | |
249 | |
250 bytes_read = DrainClientSocket(buf.get(), 1, 1, &callback); | |
251 ASSERT_EQ(bytes_read, 1u); | |
252 | |
253 // As above because of data. | |
254 EXPECT_TRUE(sock_->IsConnected()); | |
255 EXPECT_FALSE(sock_->IsConnectedAndIdle()); | |
256 | |
257 bytes_read = DrainClientSocket( | |
258 buf.get(), 4096, arraysize(kServerReply) - 2, &callback); | |
259 ASSERT_EQ(bytes_read, arraysize(kServerReply) - 2); | |
260 | |
261 // Once the data is drained, the socket should now be seen as not | |
262 // connected. | |
263 if (sock_->IsConnected()) { | |
264 // In the unlikely event that the server's connection closure is not | |
265 // processed in time, wait for the connection to be closed. | |
266 rv = sock_->Read(buf.get(), 4096, callback.callback()); | |
267 EXPECT_EQ(0, callback.GetResult(rv)); | |
268 EXPECT_FALSE(sock_->IsConnected()); | |
269 } | |
270 EXPECT_FALSE(sock_->IsConnectedAndIdle()); | |
271 } | |
272 | |
273 TEST_P(TransportClientSocketTest, Read) { | |
274 TestCompletionCallback callback; | |
275 int rv = sock_->Connect(callback.callback()); | |
276 if (rv != OK) { | |
277 ASSERT_EQ(rv, ERR_IO_PENDING); | |
278 | |
279 rv = callback.WaitForResult(); | |
280 EXPECT_EQ(rv, OK); | |
281 } | |
282 SendClientRequest(); | |
283 | |
284 scoped_refptr<IOBuffer> buf(new IOBuffer(4096)); | |
285 uint32 bytes_read = DrainClientSocket( | |
286 buf.get(), 4096, arraysize(kServerReply) - 1, &callback); | |
287 ASSERT_EQ(bytes_read, arraysize(kServerReply) - 1); | |
288 | |
289 // All data has been read now. Read once more to force an ERR_IO_PENDING, and | |
290 // then close the server socket, and note the close. | |
291 | |
292 rv = sock_->Read(buf.get(), 4096, callback.callback()); | |
293 ASSERT_EQ(ERR_IO_PENDING, rv); | |
294 CloseServerSocket(); | |
295 EXPECT_EQ(0, callback.WaitForResult()); | |
296 } | |
297 | |
298 TEST_P(TransportClientSocketTest, Read_SmallChunks) { | |
299 TestCompletionCallback callback; | |
300 int rv = sock_->Connect(callback.callback()); | |
301 if (rv != OK) { | |
302 ASSERT_EQ(rv, ERR_IO_PENDING); | |
303 | |
304 rv = callback.WaitForResult(); | |
305 EXPECT_EQ(rv, OK); | |
306 } | |
307 SendClientRequest(); | |
308 | |
309 scoped_refptr<IOBuffer> buf(new IOBuffer(1)); | |
310 uint32 bytes_read = 0; | |
311 while (bytes_read < arraysize(kServerReply) - 1) { | |
312 rv = sock_->Read(buf.get(), 1, callback.callback()); | |
313 EXPECT_TRUE(rv >= 0 || rv == ERR_IO_PENDING); | |
314 | |
315 if (rv == ERR_IO_PENDING) | |
316 rv = callback.WaitForResult(); | |
317 | |
318 ASSERT_EQ(1, rv); | |
319 bytes_read += rv; | |
320 } | |
321 | |
322 // All data has been read now. Read once more to force an ERR_IO_PENDING, and | |
323 // then close the server socket, and note the close. | |
324 | |
325 rv = sock_->Read(buf.get(), 1, callback.callback()); | |
326 ASSERT_EQ(ERR_IO_PENDING, rv); | |
327 CloseServerSocket(); | |
328 EXPECT_EQ(0, callback.WaitForResult()); | |
329 } | |
330 | |
331 TEST_P(TransportClientSocketTest, Read_Interrupted) { | |
332 TestCompletionCallback callback; | |
333 int rv = sock_->Connect(callback.callback()); | |
334 if (rv != OK) { | |
335 ASSERT_EQ(ERR_IO_PENDING, rv); | |
336 | |
337 rv = callback.WaitForResult(); | |
338 EXPECT_EQ(rv, OK); | |
339 } | |
340 SendClientRequest(); | |
341 | |
342 // Do a partial read and then exit. This test should not crash! | |
343 scoped_refptr<IOBuffer> buf(new IOBuffer(16)); | |
344 rv = sock_->Read(buf.get(), 16, callback.callback()); | |
345 EXPECT_TRUE(rv >= 0 || rv == ERR_IO_PENDING); | |
346 | |
347 if (rv == ERR_IO_PENDING) | |
348 rv = callback.WaitForResult(); | |
349 | |
350 EXPECT_NE(0, rv); | |
351 } | |
352 | |
353 TEST_P(TransportClientSocketTest, DISABLED_FullDuplex_ReadFirst) { | |
354 TestCompletionCallback callback; | |
355 int rv = sock_->Connect(callback.callback()); | |
356 if (rv != OK) { | |
357 ASSERT_EQ(rv, ERR_IO_PENDING); | |
358 | |
359 rv = callback.WaitForResult(); | |
360 EXPECT_EQ(rv, OK); | |
361 } | |
362 | |
363 // Read first. There's no data, so it should return ERR_IO_PENDING. | |
364 const int kBufLen = 4096; | |
365 scoped_refptr<IOBuffer> buf(new IOBuffer(kBufLen)); | |
366 rv = sock_->Read(buf.get(), kBufLen, callback.callback()); | |
367 EXPECT_EQ(ERR_IO_PENDING, rv); | |
368 | |
369 PauseServerReads(); | |
370 const int kWriteBufLen = 64 * 1024; | |
371 scoped_refptr<IOBuffer> request_buffer(new IOBuffer(kWriteBufLen)); | |
372 char* request_data = request_buffer->data(); | |
373 memset(request_data, 'A', kWriteBufLen); | |
374 TestCompletionCallback write_callback; | |
375 | |
376 while (true) { | |
377 rv = sock_->Write( | |
378 request_buffer.get(), kWriteBufLen, write_callback.callback()); | |
379 ASSERT_TRUE(rv >= 0 || rv == ERR_IO_PENDING); | |
380 | |
381 if (rv == ERR_IO_PENDING) { | |
382 ResumeServerReads(); | |
383 rv = write_callback.WaitForResult(); | |
384 break; | |
385 } | |
386 } | |
387 | |
388 // At this point, both read and write have returned ERR_IO_PENDING, and the | |
389 // write callback has executed. We wait for the read callback to run now to | |
390 // make sure that the socket can handle full duplex communications. | |
391 | |
392 rv = callback.WaitForResult(); | |
393 EXPECT_GE(rv, 0); | |
394 } | |
395 | |
396 TEST_P(TransportClientSocketTest, DISABLED_FullDuplex_WriteFirst) { | |
397 TestCompletionCallback callback; | |
398 int rv = sock_->Connect(callback.callback()); | |
399 if (rv != OK) { | |
400 ASSERT_EQ(ERR_IO_PENDING, rv); | |
401 | |
402 rv = callback.WaitForResult(); | |
403 EXPECT_EQ(OK, rv); | |
404 } | |
405 | |
406 PauseServerReads(); | |
407 const int kWriteBufLen = 64 * 1024; | |
408 scoped_refptr<IOBuffer> request_buffer(new IOBuffer(kWriteBufLen)); | |
409 char* request_data = request_buffer->data(); | |
410 memset(request_data, 'A', kWriteBufLen); | |
411 TestCompletionCallback write_callback; | |
412 | |
413 while (true) { | |
414 rv = sock_->Write( | |
415 request_buffer.get(), kWriteBufLen, write_callback.callback()); | |
416 ASSERT_TRUE(rv >= 0 || rv == ERR_IO_PENDING); | |
417 | |
418 if (rv == ERR_IO_PENDING) | |
419 break; | |
420 } | |
421 | |
422 // Now we have the Write() blocked on ERR_IO_PENDING. It's time to force the | |
423 // Read() to block on ERR_IO_PENDING too. | |
424 | |
425 const int kBufLen = 4096; | |
426 scoped_refptr<IOBuffer> buf(new IOBuffer(kBufLen)); | |
427 while (true) { | |
428 rv = sock_->Read(buf.get(), kBufLen, callback.callback()); | |
429 ASSERT_TRUE(rv >= 0 || rv == ERR_IO_PENDING); | |
430 if (rv == ERR_IO_PENDING) | |
431 break; | |
432 } | |
433 | |
434 // At this point, both read and write have returned ERR_IO_PENDING. Now we | |
435 // run the write and read callbacks to make sure they can handle full duplex | |
436 // communications. | |
437 | |
438 ResumeServerReads(); | |
439 rv = write_callback.WaitForResult(); | |
440 EXPECT_GE(rv, 0); | |
441 | |
442 // It's possible the read is blocked because it's already read all the data. | |
443 // Close the server socket, so there will at least be a 0-byte read. | |
444 CloseServerSocket(); | |
445 | |
446 rv = callback.WaitForResult(); | |
447 EXPECT_GE(rv, 0); | |
448 } | |
449 | |
450 } // namespace net | |
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