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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 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 "ppapi/proxy/websocket_resource.h" | 5 #include "ppapi/proxy/websocket_resource.h" |
| 6 | 6 |
| 7 #include <limits> |
| 7 #include <set> | 8 #include <set> |
| 8 #include <string> | 9 #include <string> |
| 9 #include <vector> | 10 #include <vector> |
| 10 | 11 |
| 11 #include "base/bind.h" | 12 #include "base/bind.h" |
| 12 #include "base/numerics/safe_conversions.h" | 13 #include "base/numerics/safe_conversions.h" |
| 13 #include "ppapi/c/pp_errors.h" | 14 #include "ppapi/c/pp_errors.h" |
| 14 #include "ppapi/proxy/dispatch_reply_message.h" | 15 #include "ppapi/proxy/dispatch_reply_message.h" |
| 15 #include "ppapi/proxy/ppapi_messages.h" | 16 #include "ppapi/proxy/ppapi_messages.h" |
| 16 #include "ppapi/shared_impl/ppapi_globals.h" | 17 #include "ppapi/shared_impl/ppapi_globals.h" |
| 17 #include "ppapi/shared_impl/var.h" | 18 #include "ppapi/shared_impl/var.h" |
| 18 #include "ppapi/shared_impl/var_tracker.h" | 19 #include "ppapi/shared_impl/var_tracker.h" |
| 19 | 20 |
| 20 namespace { | 21 namespace { |
| 21 | 22 |
| 22 const uint32_t kMaxReasonSizeInBytes = 123; | 23 const uint32_t kMaxReasonSizeInBytes = 123; |
| 23 const size_t kBaseFramingOverhead = 2; | 24 const size_t kBaseFramingOverhead = 2; |
| 24 const size_t kMaskingKeyLength = 4; | 25 const size_t kMaskingKeyLength = 4; |
| 25 const size_t kMinimumPayloadSizeWithTwoByteExtendedPayloadLength = 126; | 26 const size_t kMinimumPayloadSizeWithTwoByteExtendedPayloadLength = 126; |
| 26 const size_t kMinimumPayloadSizeWithEightByteExtendedPayloadLength = 0x10000; | 27 const size_t kMinimumPayloadSizeWithEightByteExtendedPayloadLength = 0x10000; |
| 27 | 28 |
| 28 uint64_t SaturateAdd(uint64_t a, uint64_t b) { | 29 uint64_t SaturateAdd(uint64_t a, uint64_t b) { |
| 29 if (kuint64max - a < b) | 30 if (std::numeric_limits<uint64_t>::max() - a < b) |
| 30 return kuint64max; | 31 return std::numeric_limits<uint64_t>::max(); |
| 31 return a + b; | 32 return a + b; |
| 32 } | 33 } |
| 33 | 34 |
| 34 uint64_t GetFrameSize(uint64_t payload_size) { | 35 uint64_t GetFrameSize(uint64_t payload_size) { |
| 35 uint64_t overhead = kBaseFramingOverhead + kMaskingKeyLength; | 36 uint64_t overhead = kBaseFramingOverhead + kMaskingKeyLength; |
| 36 if (payload_size > kMinimumPayloadSizeWithEightByteExtendedPayloadLength) | 37 if (payload_size > kMinimumPayloadSizeWithEightByteExtendedPayloadLength) |
| 37 overhead += 8; | 38 overhead += 8; |
| 38 else if (payload_size > kMinimumPayloadSizeWithTwoByteExtendedPayloadLength) | 39 else if (payload_size > kMinimumPayloadSizeWithTwoByteExtendedPayloadLength) |
| 39 overhead += 2; | 40 overhead += 2; |
| 40 return SaturateAdd(payload_size, overhead); | 41 return SaturateAdd(payload_size, overhead); |
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| 478 return PP_OK; | 479 return PP_OK; |
| 479 | 480 |
| 480 *receive_callback_var_ = received_messages_.front()->GetPPVar(); | 481 *receive_callback_var_ = received_messages_.front()->GetPPVar(); |
| 481 received_messages_.pop(); | 482 received_messages_.pop(); |
| 482 receive_callback_var_ = NULL; | 483 receive_callback_var_ = NULL; |
| 483 return PP_OK; | 484 return PP_OK; |
| 484 } | 485 } |
| 485 | 486 |
| 486 } // namespace proxy | 487 } // namespace proxy |
| 487 } // namespace ppapi | 488 } // namespace ppapi |
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