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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "net/udp/udp_socket_win.h" | 5 #include "net/udp/udp_socket_win.h" |
6 | 6 |
7 #include <mstcpip.h> | 7 #include <mstcpip.h> |
8 | 8 |
9 #include "base/eintr_wrapper.h" | 9 #include "base/eintr_wrapper.h" |
10 #include "base/logging.h" | 10 #include "base/logging.h" |
11 #include "base/memory/memory_debug.h" | |
12 #include "base/message_loop.h" | 11 #include "base/message_loop.h" |
13 #include "base/metrics/stats_counters.h" | 12 #include "base/metrics/stats_counters.h" |
14 #include "base/rand_util.h" | 13 #include "base/rand_util.h" |
15 #include "net/base/io_buffer.h" | 14 #include "net/base/io_buffer.h" |
16 #include "net/base/ip_endpoint.h" | 15 #include "net/base/ip_endpoint.h" |
17 #include "net/base/net_errors.h" | 16 #include "net/base/net_errors.h" |
18 #include "net/base/net_log.h" | 17 #include "net/base/net_log.h" |
19 #include "net/base/net_util.h" | 18 #include "net/base/net_util.h" |
20 #include "net/base/winsock_init.h" | 19 #include "net/base/winsock_init.h" |
21 #include "net/base/winsock_util.h" | 20 #include "net/base/winsock_util.h" |
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317 read_buffer.buf = buf->data(); | 316 read_buffer.buf = buf->data(); |
318 read_buffer.len = buf_len; | 317 read_buffer.len = buf_len; |
319 | 318 |
320 DWORD flags = 0; | 319 DWORD flags = 0; |
321 DWORD num; | 320 DWORD num; |
322 AssertEventNotSignaled(read_overlapped_.hEvent); | 321 AssertEventNotSignaled(read_overlapped_.hEvent); |
323 int rv = WSARecvFrom(socket_, &read_buffer, 1, &num, &flags, addr, | 322 int rv = WSARecvFrom(socket_, &read_buffer, 1, &num, &flags, addr, |
324 &recv_addr_len_, &read_overlapped_, NULL); | 323 &recv_addr_len_, &read_overlapped_, NULL); |
325 if (rv == 0) { | 324 if (rv == 0) { |
326 if (ResetEventIfSignaled(read_overlapped_.hEvent)) { | 325 if (ResetEventIfSignaled(read_overlapped_.hEvent)) { |
327 // Because of how WSARecv fills memory when used asynchronously, Purify | |
328 // isn't able to detect that it's been initialized, so it scans for 0xcd | |
329 // in the buffer and reports UMRs (uninitialized memory reads) for those | |
330 // individual bytes. We override that in PURIFY builds to avoid the | |
331 // false error reports. | |
332 // See bug 5297. | |
333 base::MemoryDebug::MarkAsInitialized(read_buffer.buf, num); | |
334 if (!ProcessSuccessfulRead(num, address)) | 326 if (!ProcessSuccessfulRead(num, address)) |
335 return ERR_FAILED; | 327 return ERR_FAILED; |
336 return static_cast<int>(num); | 328 return static_cast<int>(num); |
337 } | 329 } |
338 } else { | 330 } else { |
339 int os_error = WSAGetLastError(); | 331 int os_error = WSAGetLastError(); |
340 if (os_error != WSA_IO_PENDING) | 332 if (os_error != WSA_IO_PENDING) |
341 return MapSystemError(os_error); | 333 return MapSystemError(os_error); |
342 } | 334 } |
343 read_watcher_.StartWatching(read_overlapped_.hEvent, &read_delegate_); | 335 read_watcher_.StartWatching(read_overlapped_.hEvent, &read_delegate_); |
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401 | 393 |
402 for (int i = 0; i < kBindRetries; ++i) { | 394 for (int i = 0; i < kBindRetries; ++i) { |
403 int rv = DoBind(IPEndPoint(ip, rand_int_cb_.Run(kPortStart, kPortEnd))); | 395 int rv = DoBind(IPEndPoint(ip, rand_int_cb_.Run(kPortStart, kPortEnd))); |
404 if (rv == OK || rv != ERR_ADDRESS_IN_USE) | 396 if (rv == OK || rv != ERR_ADDRESS_IN_USE) |
405 return rv; | 397 return rv; |
406 } | 398 } |
407 return DoBind(IPEndPoint(ip, 0)); | 399 return DoBind(IPEndPoint(ip, 0)); |
408 } | 400 } |
409 | 401 |
410 } // namespace net | 402 } // namespace net |
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