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| 1 // Copyright (c) 2009 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/proxy/multi_threaded_proxy_resolver.h" | |
| 6 | |
| 7 #include "base/stl_util-inl.h" | |
| 8 #include "base/string_util.h" | |
| 9 #include "base/waitable_event.h" | |
| 10 #include "googleurl/src/gurl.h" | |
| 11 #include "net/base/net_log.h" | |
| 12 #include "net/base/net_log_unittest.h" | |
| 13 #include "net/base/net_errors.h" | |
| 14 #include "net/base/test_completion_callback.h" | |
| 15 #include "net/proxy/proxy_info.h" | |
| 16 #include "testing/gtest/include/gtest/gtest.h" | |
| 17 | |
| 18 namespace net { | |
| 19 | |
| 20 namespace { | |
| 21 | |
| 22 // A synchronous mock ProxyResolver implementation, which can be used in | |
| 23 // conjunction with MultiThreadedProxyResolver. | |
| 24 // - returns a single-item proxy list with the query's host. | |
| 25 class MockProxyResolver : public ProxyResolver { | |
| 26 public: | |
| 27 MockProxyResolver() | |
| 28 : ProxyResolver(true /*expects_pac_bytes*/), | |
| 29 wrong_loop_(MessageLoop::current()), | |
| 30 request_count_(0), | |
| 31 purge_count_(0), | |
| 32 resolve_latency_ms_(0) {} | |
| 33 | |
| 34 // ProxyResolver implementation: | |
| 35 virtual int GetProxyForURL(const GURL& query_url, | |
| 36 ProxyInfo* results, | |
| 37 CompletionCallback* callback, | |
| 38 RequestHandle* request, | |
| 39 const BoundNetLog& net_log) { | |
| 40 if (resolve_latency_ms_) | |
| 41 PlatformThread::Sleep(resolve_latency_ms_); | |
| 42 | |
| 43 CheckIsOnWorkerThread(); | |
| 44 | |
| 45 EXPECT_TRUE(callback == NULL); | |
| 46 EXPECT_TRUE(request == NULL); | |
| 47 | |
| 48 // Write something into |net_log| (doesn't really have any meaning.) | |
| 49 net_log.BeginEvent(NetLog::TYPE_PROXY_RESOLVER_V8_DNS_RESOLVE, NULL); | |
| 50 | |
| 51 results->UseNamedProxy(query_url.host()); | |
| 52 | |
| 53 // Return a success code which represents the request's order. | |
| 54 return request_count_++; | |
| 55 } | |
| 56 | |
| 57 virtual void CancelRequest(RequestHandle request) { | |
| 58 NOTREACHED(); | |
| 59 } | |
| 60 | |
| 61 virtual int SetPacScript(const GURL& pac_url, | |
| 62 const string16& text, | |
| 63 CompletionCallback* callback) { | |
| 64 CheckIsOnWorkerThread(); | |
| 65 last_pac_script_ = text; | |
| 66 return OK; | |
| 67 } | |
| 68 | |
| 69 virtual void PurgeMemory() { | |
| 70 CheckIsOnWorkerThread(); | |
| 71 ++purge_count_; | |
| 72 } | |
| 73 | |
| 74 int purge_count() const { return purge_count_; } | |
| 75 int request_count() const { return request_count_; } | |
| 76 | |
| 77 const string16& last_pac_script() const { return last_pac_script_; } | |
| 78 | |
| 79 void SetResolveLatency(int latency_ms) { | |
| 80 resolve_latency_ms_ = latency_ms; | |
| 81 } | |
| 82 | |
| 83 private: | |
| 84 void CheckIsOnWorkerThread() { | |
| 85 // We should be running on the worker thread -- while we don't know the | |
| 86 // message loop of MultiThreadedProxyResolver's worker thread, we do | |
| 87 // know that it is going to be distinct from the loop running the | |
| 88 // test, so at least make sure it isn't the main loop. | |
| 89 EXPECT_NE(MessageLoop::current(), wrong_loop_); | |
| 90 } | |
| 91 | |
| 92 MessageLoop* wrong_loop_; | |
| 93 int request_count_; | |
| 94 int purge_count_; | |
| 95 string16 last_pac_script_; | |
| 96 int resolve_latency_ms_; | |
| 97 }; | |
| 98 | |
| 99 | |
| 100 // A mock synchronous ProxyResolver which can be set to block upon reaching | |
| 101 // GetProxyForURL(). | |
| 102 // TODO(eroman): WaitUntilBlocked() *must* be called before calling Unblock(), | |
| 103 // otherwise there will be a race on |should_block_| since it is | |
| 104 // read without any synchronization. | |
| 105 class BlockableProxyResolver : public MockProxyResolver { | |
| 106 public: | |
| 107 BlockableProxyResolver() | |
| 108 : should_block_(false), | |
| 109 unblocked_(true, true), | |
| 110 blocked_(true, false) { | |
| 111 } | |
| 112 | |
| 113 void Block() { | |
| 114 should_block_ = true; | |
| 115 unblocked_.Reset(); | |
| 116 } | |
| 117 | |
| 118 void Unblock() { | |
| 119 should_block_ = false; | |
| 120 blocked_.Reset(); | |
| 121 unblocked_.Signal(); | |
| 122 } | |
| 123 | |
| 124 void WaitUntilBlocked() { | |
| 125 blocked_.Wait(); | |
| 126 } | |
| 127 | |
| 128 virtual int GetProxyForURL(const GURL& query_url, | |
| 129 ProxyInfo* results, | |
| 130 CompletionCallback* callback, | |
| 131 RequestHandle* request, | |
| 132 const BoundNetLog& net_log) { | |
| 133 if (should_block_) { | |
| 134 blocked_.Signal(); | |
| 135 unblocked_.Wait(); | |
| 136 } | |
| 137 | |
| 138 return MockProxyResolver::GetProxyForURL( | |
| 139 query_url, results, callback, request, net_log); | |
| 140 } | |
| 141 | |
| 142 private: | |
| 143 bool should_block_; | |
| 144 base::WaitableEvent unblocked_; | |
| 145 base::WaitableEvent blocked_; | |
| 146 }; | |
| 147 | |
| 148 // ForwardingProxyResolver forwards all requests to |impl|. | |
| 149 class ForwardingProxyResolver : public ProxyResolver { | |
| 150 public: | |
| 151 explicit ForwardingProxyResolver(ProxyResolver* impl) | |
| 152 : ProxyResolver(impl->expects_pac_bytes()), | |
| 153 impl_(impl) {} | |
| 154 | |
| 155 virtual int GetProxyForURL(const GURL& query_url, | |
| 156 ProxyInfo* results, | |
| 157 CompletionCallback* callback, | |
| 158 RequestHandle* request, | |
| 159 const BoundNetLog& net_log) { | |
| 160 return impl_->GetProxyForURL( | |
| 161 query_url, results, callback, request, net_log); | |
| 162 } | |
| 163 | |
| 164 virtual void CancelRequest(RequestHandle request) { | |
| 165 impl_->CancelRequest(request); | |
| 166 } | |
| 167 | |
| 168 virtual int SetPacScript(const GURL& pac_url, | |
| 169 const string16& script, | |
| 170 CompletionCallback* callback) { | |
| 171 if (impl_->expects_pac_bytes()) | |
| 172 return impl_->SetPacScriptByData(script, callback); | |
| 173 else | |
| 174 return impl_->SetPacScriptByUrl(pac_url, callback); | |
| 175 } | |
| 176 | |
| 177 virtual void PurgeMemory() { | |
| 178 impl_->PurgeMemory(); | |
| 179 } | |
| 180 | |
| 181 private: | |
| 182 ProxyResolver* impl_; | |
| 183 }; | |
| 184 | |
| 185 // This factory returns ProxyResolvers that forward all requests to | |
| 186 // |resolver|. | |
| 187 class ForwardingProxyResolverFactory : public ProxyResolverFactory { | |
| 188 public: | |
| 189 explicit ForwardingProxyResolverFactory(ProxyResolver* resolver) | |
| 190 : ProxyResolverFactory(resolver->expects_pac_bytes()), | |
| 191 resolver_(resolver) {} | |
| 192 | |
| 193 virtual ProxyResolver* CreateProxyResolver() { | |
| 194 return new ForwardingProxyResolver(resolver_); | |
| 195 } | |
| 196 | |
| 197 private: | |
| 198 ProxyResolver* resolver_; | |
| 199 }; | |
| 200 | |
| 201 // This factory returns new instances of BlockableProxyResolver. | |
| 202 class BlockableProxyResolverFactory : public ProxyResolverFactory { | |
| 203 public: | |
| 204 BlockableProxyResolverFactory() : ProxyResolverFactory(true) {} | |
| 205 | |
| 206 ~BlockableProxyResolverFactory() { | |
| 207 STLDeleteElements(&resolvers_); | |
| 208 } | |
| 209 | |
| 210 virtual ProxyResolver* CreateProxyResolver() { | |
| 211 BlockableProxyResolver* resolver = new BlockableProxyResolver; | |
| 212 resolvers_.push_back(resolver); | |
| 213 return new ForwardingProxyResolver(resolver); | |
| 214 } | |
| 215 | |
| 216 std::vector<BlockableProxyResolver*> resolvers() { | |
| 217 return resolvers_; | |
| 218 } | |
| 219 | |
| 220 private: | |
| 221 std::vector<BlockableProxyResolver*> resolvers_; | |
| 222 }; | |
| 223 | |
| 224 TEST(MultiThreadedProxyResolverTest, SingleThread_Basic) { | |
| 225 const size_t kNumThreads = 1u; | |
| 226 scoped_ptr<MockProxyResolver> mock(new MockProxyResolver); | |
| 227 MultiThreadedProxyResolver resolver( | |
| 228 new ForwardingProxyResolverFactory(mock.get()), kNumThreads); | |
| 229 | |
| 230 int rv; | |
| 231 | |
| 232 EXPECT_TRUE(resolver.expects_pac_bytes()); | |
| 233 | |
| 234 // Call SetPacScriptByData() -- verify that it reaches the synchronous | |
| 235 // resolver. | |
| 236 TestCompletionCallback set_script_callback; | |
| 237 rv = resolver.SetPacScriptByData(ASCIIToUTF16("pac script bytes"), | |
| 238 &set_script_callback); | |
| 239 EXPECT_EQ(ERR_IO_PENDING, rv); | |
| 240 EXPECT_EQ(OK, set_script_callback.WaitForResult()); | |
| 241 EXPECT_EQ(ASCIIToUTF16("pac script bytes"), mock->last_pac_script()); | |
| 242 | |
| 243 // Start request 0. | |
| 244 TestCompletionCallback callback0; | |
| 245 CapturingBoundNetLog log0(CapturingNetLog::kUnbounded); | |
| 246 ProxyInfo results0; | |
| 247 rv = resolver.GetProxyForURL( | |
| 248 GURL("http://request0"), &results0, &callback0, NULL, log0.bound()); | |
| 249 EXPECT_EQ(ERR_IO_PENDING, rv); | |
| 250 | |
| 251 // Wait for request 0 to finish. | |
| 252 rv = callback0.WaitForResult(); | |
| 253 EXPECT_EQ(0, rv); | |
| 254 EXPECT_EQ("PROXY request0:80", results0.ToPacString()); | |
| 255 | |
| 256 // The mock proxy resolver should have written 1 log entry. And | |
| 257 // on completion, this should have been copied into |log0|. | |
| 258 // We also have 1 log entry that was emitted by the | |
| 259 // MultiThreadedProxyResolver. | |
| 260 ASSERT_EQ(2u, log0.entries().size()); | |
| 261 EXPECT_EQ(NetLog::TYPE_SUBMITTED_TO_RESOLVER_THREAD, | |
| 262 log0.entries()[0].type); | |
| 263 | |
| 264 // Start 3 more requests (request1 to request3). | |
| 265 | |
| 266 TestCompletionCallback callback1; | |
| 267 ProxyInfo results1; | |
| 268 rv = resolver.GetProxyForURL( | |
| 269 GURL("http://request1"), &results1, &callback1, NULL, BoundNetLog()); | |
| 270 EXPECT_EQ(ERR_IO_PENDING, rv); | |
| 271 | |
| 272 TestCompletionCallback callback2; | |
| 273 ProxyInfo results2; | |
| 274 rv = resolver.GetProxyForURL( | |
| 275 GURL("http://request2"), &results2, &callback2, NULL, BoundNetLog()); | |
| 276 EXPECT_EQ(ERR_IO_PENDING, rv); | |
| 277 | |
| 278 TestCompletionCallback callback3; | |
| 279 ProxyInfo results3; | |
| 280 rv = resolver.GetProxyForURL( | |
| 281 GURL("http://request3"), &results3, &callback3, NULL, BoundNetLog()); | |
| 282 EXPECT_EQ(ERR_IO_PENDING, rv); | |
| 283 | |
| 284 // Wait for the requests to finish (they must finish in the order they were | |
| 285 // started, which is what we check for from their magic return value) | |
| 286 | |
| 287 rv = callback1.WaitForResult(); | |
| 288 EXPECT_EQ(1, rv); | |
| 289 EXPECT_EQ("PROXY request1:80", results1.ToPacString()); | |
| 290 | |
| 291 rv = callback2.WaitForResult(); | |
| 292 EXPECT_EQ(2, rv); | |
| 293 EXPECT_EQ("PROXY request2:80", results2.ToPacString()); | |
| 294 | |
| 295 rv = callback3.WaitForResult(); | |
| 296 EXPECT_EQ(3, rv); | |
| 297 EXPECT_EQ("PROXY request3:80", results3.ToPacString()); | |
| 298 | |
| 299 // Ensure that PurgeMemory() reaches the wrapped resolver and happens on the | |
| 300 // right thread. | |
| 301 EXPECT_EQ(0, mock->purge_count()); | |
| 302 resolver.PurgeMemory(); | |
| 303 // There is no way to get a callback directly when PurgeMemory() completes, so | |
| 304 // we queue up a dummy request after the PurgeMemory() call and wait until it | |
| 305 // finishes to ensure PurgeMemory() has had a chance to run. | |
| 306 TestCompletionCallback dummy_callback; | |
| 307 rv = resolver.SetPacScriptByData(ASCIIToUTF16("dummy"), &dummy_callback); | |
| 308 EXPECT_EQ(OK, dummy_callback.WaitForResult()); | |
| 309 EXPECT_EQ(1, mock->purge_count()); | |
| 310 } | |
| 311 | |
| 312 // Tests that the NetLog is updated to include the time the request was waiting | |
| 313 // to be scheduled to a thread. | |
| 314 TEST(MultiThreadedProxyResolverTest, | |
| 315 SingleThread_UpdatesNetLogWithThreadWait) { | |
| 316 const size_t kNumThreads = 1u; | |
| 317 scoped_ptr<BlockableProxyResolver> mock(new BlockableProxyResolver); | |
| 318 MultiThreadedProxyResolver resolver( | |
| 319 new ForwardingProxyResolverFactory(mock.get()), kNumThreads); | |
| 320 | |
| 321 int rv; | |
| 322 | |
| 323 // Initialize the resolver. | |
| 324 TestCompletionCallback init_callback; | |
| 325 rv = resolver.SetPacScriptByData(ASCIIToUTF16("foo"), &init_callback); | |
| 326 EXPECT_EQ(OK, init_callback.WaitForResult()); | |
| 327 | |
| 328 // Block the proxy resolver, so no request can complete. | |
| 329 mock->Block(); | |
| 330 | |
| 331 // Start request 0. | |
| 332 ProxyResolver::RequestHandle request0; | |
| 333 TestCompletionCallback callback0; | |
| 334 ProxyInfo results0; | |
| 335 CapturingBoundNetLog log0(CapturingNetLog::kUnbounded); | |
| 336 rv = resolver.GetProxyForURL( | |
| 337 GURL("http://request0"), &results0, &callback0, &request0, log0.bound()); | |
| 338 EXPECT_EQ(ERR_IO_PENDING, rv); | |
| 339 | |
| 340 // Start 2 more requests (request1 and request2). | |
| 341 | |
| 342 TestCompletionCallback callback1; | |
| 343 ProxyInfo results1; | |
| 344 CapturingBoundNetLog log1(CapturingNetLog::kUnbounded); | |
| 345 rv = resolver.GetProxyForURL( | |
| 346 GURL("http://request1"), &results1, &callback1, NULL, log1.bound()); | |
| 347 EXPECT_EQ(ERR_IO_PENDING, rv); | |
| 348 | |
| 349 ProxyResolver::RequestHandle request2; | |
| 350 TestCompletionCallback callback2; | |
| 351 ProxyInfo results2; | |
| 352 CapturingBoundNetLog log2(CapturingNetLog::kUnbounded); | |
| 353 rv = resolver.GetProxyForURL( | |
| 354 GURL("http://request2"), &results2, &callback2, &request2, log2.bound()); | |
| 355 EXPECT_EQ(ERR_IO_PENDING, rv); | |
| 356 | |
| 357 // Unblock the worker thread so the requests can continue running. | |
| 358 mock->WaitUntilBlocked(); | |
| 359 mock->Unblock(); | |
| 360 | |
| 361 // Check that request 0 completed as expected. | |
| 362 // The NetLog has 1 entry that came from the MultiThreadedProxyResolver, and | |
| 363 // 1 entry from the mock proxy resolver. | |
| 364 EXPECT_EQ(0, callback0.WaitForResult()); | |
| 365 EXPECT_EQ("PROXY request0:80", results0.ToPacString()); | |
| 366 ASSERT_EQ(2u, log0.entries().size()); | |
| 367 EXPECT_EQ(NetLog::TYPE_SUBMITTED_TO_RESOLVER_THREAD, | |
| 368 log0.entries()[0].type); | |
| 369 | |
| 370 // Check that request 1 completed as expected. | |
| 371 EXPECT_EQ(1, callback1.WaitForResult()); | |
| 372 EXPECT_EQ("PROXY request1:80", results1.ToPacString()); | |
| 373 ASSERT_EQ(4u, log1.entries().size()); | |
| 374 EXPECT_TRUE(LogContainsBeginEvent( | |
| 375 log1.entries(), 0, | |
| 376 NetLog::TYPE_WAITING_FOR_PROXY_RESOLVER_THREAD)); | |
| 377 EXPECT_TRUE(LogContainsEndEvent( | |
| 378 log1.entries(), 1, | |
| 379 NetLog::TYPE_WAITING_FOR_PROXY_RESOLVER_THREAD)); | |
| 380 | |
| 381 // Check that request 2 completed as expected. | |
| 382 EXPECT_EQ(2, callback2.WaitForResult()); | |
| 383 EXPECT_EQ("PROXY request2:80", results2.ToPacString()); | |
| 384 ASSERT_EQ(4u, log2.entries().size()); | |
| 385 EXPECT_TRUE(LogContainsBeginEvent( | |
| 386 log2.entries(), 0, | |
| 387 NetLog::TYPE_WAITING_FOR_PROXY_RESOLVER_THREAD)); | |
| 388 EXPECT_TRUE(LogContainsEndEvent( | |
| 389 log2.entries(), 1, | |
| 390 NetLog::TYPE_WAITING_FOR_PROXY_RESOLVER_THREAD)); | |
| 391 } | |
| 392 | |
| 393 // Cancel a request which is in progress, and then cancel a request which | |
| 394 // is pending. | |
| 395 TEST(MultiThreadedProxyResolverTest, SingleThread_CancelRequest) { | |
| 396 const size_t kNumThreads = 1u; | |
| 397 scoped_ptr<BlockableProxyResolver> mock(new BlockableProxyResolver); | |
| 398 MultiThreadedProxyResolver resolver( | |
| 399 new ForwardingProxyResolverFactory(mock.get()), | |
| 400 kNumThreads); | |
| 401 | |
| 402 int rv; | |
| 403 | |
| 404 // Initialize the resolver. | |
| 405 TestCompletionCallback init_callback; | |
| 406 rv = resolver.SetPacScriptByData(ASCIIToUTF16("foo"), &init_callback); | |
| 407 EXPECT_EQ(OK, init_callback.WaitForResult()); | |
| 408 | |
| 409 // Block the proxy resolver, so no request can complete. | |
| 410 mock->Block(); | |
| 411 | |
| 412 // Start request 0. | |
| 413 ProxyResolver::RequestHandle request0; | |
| 414 TestCompletionCallback callback0; | |
| 415 ProxyInfo results0; | |
| 416 rv = resolver.GetProxyForURL( | |
| 417 GURL("http://request0"), &results0, &callback0, &request0, BoundNetLog()); | |
| 418 EXPECT_EQ(ERR_IO_PENDING, rv); | |
| 419 | |
| 420 // Wait until requests 0 reaches the worker thread. | |
| 421 mock->WaitUntilBlocked(); | |
| 422 | |
| 423 // Start 3 more requests (request1 : request3). | |
| 424 | |
| 425 TestCompletionCallback callback1; | |
| 426 ProxyInfo results1; | |
| 427 rv = resolver.GetProxyForURL( | |
| 428 GURL("http://request1"), &results1, &callback1, NULL, BoundNetLog()); | |
| 429 EXPECT_EQ(ERR_IO_PENDING, rv); | |
| 430 | |
| 431 ProxyResolver::RequestHandle request2; | |
| 432 TestCompletionCallback callback2; | |
| 433 ProxyInfo results2; | |
| 434 rv = resolver.GetProxyForURL( | |
| 435 GURL("http://request2"), &results2, &callback2, &request2, BoundNetLog()); | |
| 436 EXPECT_EQ(ERR_IO_PENDING, rv); | |
| 437 | |
| 438 TestCompletionCallback callback3; | |
| 439 ProxyInfo results3; | |
| 440 rv = resolver.GetProxyForURL( | |
| 441 GURL("http://request3"), &results3, &callback3, NULL, BoundNetLog()); | |
| 442 EXPECT_EQ(ERR_IO_PENDING, rv); | |
| 443 | |
| 444 // Cancel request0 (inprogress) and request2 (pending). | |
| 445 resolver.CancelRequest(request0); | |
| 446 resolver.CancelRequest(request2); | |
| 447 | |
| 448 // Unblock the worker thread so the requests can continue running. | |
| 449 mock->Unblock(); | |
| 450 | |
| 451 // Wait for requests 1 and 3 to finish. | |
| 452 | |
| 453 rv = callback1.WaitForResult(); | |
| 454 EXPECT_EQ(1, rv); | |
| 455 EXPECT_EQ("PROXY request1:80", results1.ToPacString()); | |
| 456 | |
| 457 rv = callback3.WaitForResult(); | |
| 458 // Note that since request2 was cancelled before reaching the resolver, | |
| 459 // the request count is 2 and not 3 here. | |
| 460 EXPECT_EQ(2, rv); | |
| 461 EXPECT_EQ("PROXY request3:80", results3.ToPacString()); | |
| 462 | |
| 463 // Requests 0 and 2 which were cancelled, hence their completion callbacks | |
| 464 // were never summoned. | |
| 465 EXPECT_FALSE(callback0.have_result()); | |
| 466 EXPECT_FALSE(callback2.have_result()); | |
| 467 } | |
| 468 | |
| 469 // Test that deleting MultiThreadedProxyResolver while requests are | |
| 470 // outstanding cancels them (and doesn't leak anything). | |
| 471 TEST(MultiThreadedProxyResolverTest, SingleThread_CancelRequestByDeleting) { | |
| 472 const size_t kNumThreads = 1u; | |
| 473 scoped_ptr<BlockableProxyResolver> mock(new BlockableProxyResolver); | |
| 474 scoped_ptr<MultiThreadedProxyResolver> resolver( | |
| 475 new MultiThreadedProxyResolver( | |
| 476 new ForwardingProxyResolverFactory(mock.get()), kNumThreads)); | |
| 477 | |
| 478 int rv; | |
| 479 | |
| 480 // Initialize the resolver. | |
| 481 TestCompletionCallback init_callback; | |
| 482 rv = resolver->SetPacScriptByData(ASCIIToUTF16("foo"), &init_callback); | |
| 483 EXPECT_EQ(OK, init_callback.WaitForResult()); | |
| 484 | |
| 485 // Block the proxy resolver, so no request can complete. | |
| 486 mock->Block(); | |
| 487 | |
| 488 // Start 3 requests. | |
| 489 | |
| 490 TestCompletionCallback callback0; | |
| 491 ProxyInfo results0; | |
| 492 rv = resolver->GetProxyForURL( | |
| 493 GURL("http://request0"), &results0, &callback0, NULL, BoundNetLog()); | |
| 494 EXPECT_EQ(ERR_IO_PENDING, rv); | |
| 495 | |
| 496 TestCompletionCallback callback1; | |
| 497 ProxyInfo results1; | |
| 498 rv = resolver->GetProxyForURL( | |
| 499 GURL("http://request1"), &results1, &callback1, NULL, BoundNetLog()); | |
| 500 EXPECT_EQ(ERR_IO_PENDING, rv); | |
| 501 | |
| 502 TestCompletionCallback callback2; | |
| 503 ProxyInfo results2; | |
| 504 rv = resolver->GetProxyForURL( | |
| 505 GURL("http://request2"), &results2, &callback2, NULL, BoundNetLog()); | |
| 506 EXPECT_EQ(ERR_IO_PENDING, rv); | |
| 507 | |
| 508 // Wait until request 0 reaches the worker thread. | |
| 509 mock->WaitUntilBlocked(); | |
| 510 | |
| 511 // Add some latency, to improve the chance that when | |
| 512 // MultiThreadedProxyResolver is deleted below we are still running inside | |
| 513 // of the worker thread. The test will pass regardless, so this race doesn't | |
| 514 // cause flakiness. However the destruction during execution is a more | |
| 515 // interesting case to test. | |
| 516 mock->SetResolveLatency(100); | |
| 517 | |
| 518 // Unblock the worker thread and delete the underlying | |
| 519 // MultiThreadedProxyResolver immediately. | |
| 520 mock->Unblock(); | |
| 521 resolver.reset(); | |
| 522 | |
| 523 // Give any posted tasks a chance to run (in case there is badness). | |
| 524 MessageLoop::current()->RunAllPending(); | |
| 525 | |
| 526 // Check that none of the outstanding requests were completed. | |
| 527 EXPECT_FALSE(callback0.have_result()); | |
| 528 EXPECT_FALSE(callback1.have_result()); | |
| 529 EXPECT_FALSE(callback2.have_result()); | |
| 530 } | |
| 531 | |
| 532 // Cancel an outstanding call to SetPacScriptByData(). | |
| 533 TEST(MultiThreadedProxyResolverTest, SingleThread_CancelSetPacScript) { | |
| 534 const size_t kNumThreads = 1u; | |
| 535 scoped_ptr<BlockableProxyResolver> mock(new BlockableProxyResolver); | |
| 536 MultiThreadedProxyResolver resolver( | |
| 537 new ForwardingProxyResolverFactory(mock.get()), kNumThreads); | |
| 538 | |
| 539 int rv; | |
| 540 | |
| 541 TestCompletionCallback set_pac_script_callback; | |
| 542 rv = resolver.SetPacScriptByData(ASCIIToUTF16("data"), | |
| 543 &set_pac_script_callback); | |
| 544 EXPECT_EQ(ERR_IO_PENDING, rv); | |
| 545 | |
| 546 // Cancel the SetPacScriptByData request. | |
| 547 resolver.CancelSetPacScript(); | |
| 548 | |
| 549 // Start another SetPacScript request | |
| 550 TestCompletionCallback set_pac_script_callback2; | |
| 551 rv = resolver.SetPacScriptByData(ASCIIToUTF16("data2"), | |
| 552 &set_pac_script_callback2); | |
| 553 EXPECT_EQ(ERR_IO_PENDING, rv); | |
| 554 | |
| 555 // Wait for the initialization to complete. | |
| 556 | |
| 557 rv = set_pac_script_callback2.WaitForResult(); | |
| 558 EXPECT_EQ(0, rv); | |
| 559 EXPECT_EQ(ASCIIToUTF16("data2"), mock->last_pac_script()); | |
| 560 | |
| 561 // The first SetPacScript callback should never have been completed. | |
| 562 EXPECT_FALSE(set_pac_script_callback.have_result()); | |
| 563 } | |
| 564 | |
| 565 // Tests setting the PAC script once, lazily creating new threads, and | |
| 566 // cancelling requests. | |
| 567 TEST(MultiThreadedProxyResolverTest, ThreeThreads_Basic) { | |
| 568 const size_t kNumThreads = 3u; | |
| 569 BlockableProxyResolverFactory* factory = new BlockableProxyResolverFactory; | |
| 570 MultiThreadedProxyResolver resolver(factory, kNumThreads); | |
| 571 | |
| 572 int rv; | |
| 573 | |
| 574 EXPECT_TRUE(resolver.expects_pac_bytes()); | |
| 575 | |
| 576 // Call SetPacScriptByData() -- verify that it reaches the synchronous | |
| 577 // resolver. | |
| 578 TestCompletionCallback set_script_callback; | |
| 579 rv = resolver.SetPacScriptByData(ASCIIToUTF16("pac script bytes"), | |
| 580 &set_script_callback); | |
| 581 EXPECT_EQ(ERR_IO_PENDING, rv); | |
| 582 EXPECT_EQ(OK, set_script_callback.WaitForResult()); | |
| 583 // One thread has been provisioned (i.e. one ProxyResolver was created). | |
| 584 ASSERT_EQ(1u, factory->resolvers().size()); | |
| 585 EXPECT_EQ(ASCIIToUTF16("pac script bytes"), | |
| 586 factory->resolvers()[0]->last_pac_script()); | |
| 587 | |
| 588 const int kNumRequests = 9; | |
| 589 TestCompletionCallback callback[kNumRequests]; | |
| 590 ProxyInfo results[kNumRequests]; | |
| 591 ProxyResolver::RequestHandle request[kNumRequests]; | |
| 592 | |
| 593 // Start request 0 -- this should run on thread 0 as there is nothing else | |
| 594 // going on right now. | |
| 595 rv = resolver.GetProxyForURL( | |
| 596 GURL("http://request0"), &results[0], &callback[0], &request[0], | |
| 597 BoundNetLog()); | |
| 598 EXPECT_EQ(ERR_IO_PENDING, rv); | |
| 599 | |
| 600 // Wait for request 0 to finish. | |
| 601 rv = callback[0].WaitForResult(); | |
| 602 EXPECT_EQ(0, rv); | |
| 603 EXPECT_EQ("PROXY request0:80", results[0].ToPacString()); | |
| 604 ASSERT_EQ(1u, factory->resolvers().size()); | |
| 605 EXPECT_EQ(1, factory->resolvers()[0]->request_count()); | |
| 606 | |
| 607 MessageLoop::current()->RunAllPending(); | |
| 608 | |
| 609 // We now start 8 requests in parallel -- this will cause the maximum of | |
| 610 // three threads to be provisioned (an additional two from what we already | |
| 611 // have). | |
| 612 | |
| 613 for (int i = 1; i < kNumRequests; ++i) { | |
| 614 rv = resolver.GetProxyForURL( | |
| 615 GURL(StringPrintf("http://request%d", i)), &results[i], &callback[i], | |
| 616 &request[i], BoundNetLog()); | |
| 617 EXPECT_EQ(ERR_IO_PENDING, rv); | |
| 618 } | |
| 619 | |
| 620 // We should now have a total of 3 threads, each with its own ProxyResolver | |
| 621 // that will get initialized with the same data. (We check this later since | |
| 622 // the assignment happens on the worker threads and may not have occurred | |
| 623 // yet.) | |
| 624 ASSERT_EQ(3u, factory->resolvers().size()); | |
| 625 | |
| 626 // Cancel 3 of the 8 oustanding requests. | |
| 627 resolver.CancelRequest(request[1]); | |
| 628 resolver.CancelRequest(request[3]); | |
| 629 resolver.CancelRequest(request[6]); | |
| 630 | |
| 631 // Wait for the remaining requests to complete. | |
| 632 int kNonCancelledRequests[] = {2, 4, 5, 7, 8}; | |
| 633 for (size_t i = 0; i < arraysize(kNonCancelledRequests); ++i) { | |
| 634 int request_index = kNonCancelledRequests[i]; | |
| 635 EXPECT_GE(callback[request_index].WaitForResult(), 0); | |
| 636 } | |
| 637 | |
| 638 // Check that the cancelled requests never invoked their callback. | |
| 639 EXPECT_FALSE(callback[1].have_result()); | |
| 640 EXPECT_FALSE(callback[3].have_result()); | |
| 641 EXPECT_FALSE(callback[6].have_result()); | |
| 642 | |
| 643 // We call SetPacScript again, solely to stop the current worker threads. | |
| 644 // (That way we can test to see the values observed by the synchronous | |
| 645 // resolvers in a non-racy manner). | |
| 646 TestCompletionCallback set_script_callback2; | |
| 647 rv = resolver.SetPacScriptByData(ASCIIToUTF16("xyz"), &set_script_callback2); | |
| 648 EXPECT_EQ(ERR_IO_PENDING, rv); | |
| 649 EXPECT_EQ(OK, set_script_callback2.WaitForResult()); | |
| 650 ASSERT_EQ(4u, factory->resolvers().size()); | |
| 651 | |
| 652 for (int i = 0; i < 3; ++i) { | |
| 653 EXPECT_EQ(ASCIIToUTF16("pac script bytes"), | |
| 654 factory->resolvers()[i]->last_pac_script()) << "i=" << i; | |
| 655 } | |
| 656 | |
| 657 EXPECT_EQ(ASCIIToUTF16("xyz"), | |
| 658 factory->resolvers()[3]->last_pac_script()); | |
| 659 | |
| 660 // We don't know the exact ordering that requests ran on threads with, | |
| 661 // but we do know the total count that should have reached the threads. | |
| 662 // 8 total were submitted, and three were cancelled. Of the three that | |
| 663 // were cancelled, one of them (request 1) was cancelled after it had | |
| 664 // already been posted to the worker thread. So the resolvers will | |
| 665 // have seen 6 total (and 1 from the run prior). | |
| 666 ASSERT_EQ(4u, factory->resolvers().size()); | |
| 667 int total_count = 0; | |
| 668 for (int i = 0; i < 3; ++i) { | |
| 669 total_count += factory->resolvers()[i]->request_count(); | |
| 670 } | |
| 671 EXPECT_EQ(7, total_count); | |
| 672 } | |
| 673 | |
| 674 // Tests using two threads. The first request hangs the first thread. Checks | |
| 675 // that other requests are able to complete while this first request remains | |
| 676 // stalled. | |
| 677 TEST(MultiThreadedProxyResolverTest, OneThreadBlocked) { | |
| 678 const size_t kNumThreads = 2u; | |
| 679 BlockableProxyResolverFactory* factory = new BlockableProxyResolverFactory; | |
| 680 MultiThreadedProxyResolver resolver(factory, kNumThreads); | |
| 681 | |
| 682 int rv; | |
| 683 | |
| 684 EXPECT_TRUE(resolver.expects_pac_bytes()); | |
| 685 | |
| 686 // Initialize the resolver. | |
| 687 TestCompletionCallback set_script_callback; | |
| 688 rv = resolver.SetPacScriptByData(ASCIIToUTF16("pac script bytes"), | |
| 689 &set_script_callback); | |
| 690 EXPECT_EQ(ERR_IO_PENDING, rv); | |
| 691 EXPECT_EQ(OK, set_script_callback.WaitForResult()); | |
| 692 // One thread has been provisioned (i.e. one ProxyResolver was created). | |
| 693 ASSERT_EQ(1u, factory->resolvers().size()); | |
| 694 EXPECT_EQ(ASCIIToUTF16("pac script bytes"), | |
| 695 factory->resolvers()[0]->last_pac_script()); | |
| 696 | |
| 697 const int kNumRequests = 4; | |
| 698 TestCompletionCallback callback[kNumRequests]; | |
| 699 ProxyInfo results[kNumRequests]; | |
| 700 ProxyResolver::RequestHandle request[kNumRequests]; | |
| 701 | |
| 702 // Start a request that will block the first thread. | |
| 703 | |
| 704 factory->resolvers()[0]->Block(); | |
| 705 | |
| 706 rv = resolver.GetProxyForURL( | |
| 707 GURL("http://request0"), &results[0], &callback[0], &request[0], | |
| 708 BoundNetLog()); | |
| 709 | |
| 710 EXPECT_EQ(ERR_IO_PENDING, rv); | |
| 711 factory->resolvers()[0]->WaitUntilBlocked(); | |
| 712 | |
| 713 // Start 3 more requests -- they should all be serviced by thread #2 | |
| 714 // since thread #1 is blocked. | |
| 715 | |
| 716 for (int i = 1; i < kNumRequests; ++i) { | |
| 717 rv = resolver.GetProxyForURL( | |
| 718 GURL(StringPrintf("http://request%d", i)), | |
| 719 &results[i], &callback[i], &request[i], BoundNetLog()); | |
| 720 EXPECT_EQ(ERR_IO_PENDING, rv); | |
| 721 } | |
| 722 | |
| 723 // Wait for the three requests to complete (they should complete in FIFO | |
| 724 // order). | |
| 725 for (int i = 1; i < kNumRequests; ++i) { | |
| 726 EXPECT_EQ(i - 1, callback[i].WaitForResult()); | |
| 727 } | |
| 728 | |
| 729 // Unblock the first thread. | |
| 730 factory->resolvers()[0]->Unblock(); | |
| 731 EXPECT_EQ(0, callback[0].WaitForResult()); | |
| 732 | |
| 733 // All in all, the first thread should have seen just 1 request. And the | |
| 734 // second thread 3 requests. | |
| 735 ASSERT_EQ(2u, factory->resolvers().size()); | |
| 736 EXPECT_EQ(1, factory->resolvers()[0]->request_count()); | |
| 737 EXPECT_EQ(3, factory->resolvers()[1]->request_count()); | |
| 738 } | |
| 739 | |
| 740 } // namespace | |
| 741 | |
| 742 } // namespace net | |
| OLD | NEW |
|---|
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Issue 2945004:
Revert 51877, since SpdyNetworkTransactionTest.CorruptFrameSessionError start... (Closed)
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