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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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/quic/core/quic_flow_controller.h" | 5 #include "net/quic/core/quic_flow_controller.h" |
6 | 6 |
7 #include <cstdint> | 7 #include <cstdint> |
8 | 8 |
9 #include "net/quic/core/quic_connection.h" | 9 #include "net/quic/core/quic_connection.h" |
10 #include "net/quic/core/quic_packets.h" | 10 #include "net/quic/core/quic_packets.h" |
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47 << ", setting initial receive window offset to: " | 47 << ", setting initial receive window offset to: " |
48 << receive_window_offset_ | 48 << receive_window_offset_ |
49 << ", max receive window to: " << receive_window_size_ | 49 << ", max receive window to: " << receive_window_size_ |
50 << ", max receive window limit to: " | 50 << ", max receive window limit to: " |
51 << receive_window_size_limit_ | 51 << receive_window_size_limit_ |
52 << ", setting send window offset to: " << send_window_offset_; | 52 << ", setting send window offset to: " << send_window_offset_; |
53 } | 53 } |
54 | 54 |
55 void QuicFlowController::AddBytesConsumed(QuicByteCount bytes_consumed) { | 55 void QuicFlowController::AddBytesConsumed(QuicByteCount bytes_consumed) { |
56 bytes_consumed_ += bytes_consumed; | 56 bytes_consumed_ += bytes_consumed; |
57 QUIC_DVLOG(1) << ENDPOINT << "Stream " << id_ | 57 QUIC_DVLOG(1) << ENDPOINT << "Stream " << id_ << " consumed " |
58 << " consumed: " << bytes_consumed_; | 58 << bytes_consumed_ << " bytes."; |
59 | 59 |
60 MaybeSendWindowUpdate(); | 60 MaybeSendWindowUpdate(); |
61 } | 61 } |
62 | 62 |
63 bool QuicFlowController::UpdateHighestReceivedOffset( | 63 bool QuicFlowController::UpdateHighestReceivedOffset( |
64 QuicStreamOffset new_offset) { | 64 QuicStreamOffset new_offset) { |
65 // Only update if offset has increased. | 65 // Only update if offset has increased. |
66 if (new_offset <= highest_received_byte_offset_) { | 66 if (new_offset <= highest_received_byte_offset_) { |
67 return false; | 67 return false; |
68 } | 68 } |
69 | 69 |
70 QUIC_DVLOG(1) << ENDPOINT << "Stream " << id_ | 70 QUIC_DVLOG(1) << ENDPOINT << "Stream " << id_ |
71 << " highest byte offset increased from: " | 71 << " highest byte offset increased from " |
72 << highest_received_byte_offset_ << " to " << new_offset; | 72 << highest_received_byte_offset_ << " to " << new_offset; |
73 highest_received_byte_offset_ = new_offset; | 73 highest_received_byte_offset_ = new_offset; |
74 return true; | 74 return true; |
75 } | 75 } |
76 | 76 |
77 void QuicFlowController::AddBytesSent(QuicByteCount bytes_sent) { | 77 void QuicFlowController::AddBytesSent(QuicByteCount bytes_sent) { |
78 if (bytes_sent_ + bytes_sent > send_window_offset_) { | 78 if (bytes_sent_ + bytes_sent > send_window_offset_) { |
79 QUIC_BUG << ENDPOINT << "Stream " << id_ << " Trying to send an extra " | 79 QUIC_BUG << ENDPOINT << "Stream " << id_ << " Trying to send an extra " |
80 << bytes_sent << " bytes, when bytes_sent = " << bytes_sent_ | 80 << bytes_sent << " bytes, when bytes_sent = " << bytes_sent_ |
81 << ", and send_window_offset_ = " << send_window_offset_; | 81 << ", and send_window_offset_ = " << send_window_offset_; |
82 bytes_sent_ = send_window_offset_; | 82 bytes_sent_ = send_window_offset_; |
83 | 83 |
84 // This is an error on our side, close the connection as soon as possible. | 84 // This is an error on our side, close the connection as soon as possible. |
85 connection_->CloseConnection( | 85 connection_->CloseConnection( |
86 QUIC_FLOW_CONTROL_SENT_TOO_MUCH_DATA, | 86 QUIC_FLOW_CONTROL_SENT_TOO_MUCH_DATA, |
87 QuicStrCat(send_window_offset_ - (bytes_sent_ + bytes_sent), | 87 QuicStrCat(send_window_offset_ - (bytes_sent_ + bytes_sent), |
88 "bytes over send window offset"), | 88 "bytes over send window offset"), |
89 ConnectionCloseBehavior::SEND_CONNECTION_CLOSE_PACKET); | 89 ConnectionCloseBehavior::SEND_CONNECTION_CLOSE_PACKET); |
90 return; | 90 return; |
91 } | 91 } |
92 | 92 |
93 bytes_sent_ += bytes_sent; | 93 bytes_sent_ += bytes_sent; |
94 QUIC_DVLOG(1) << ENDPOINT << "Stream " << id_ << " sent: " << bytes_sent_; | 94 QUIC_DVLOG(1) << ENDPOINT << "Stream " << id_ << " sent " << bytes_sent_ |
| 95 << " bytes."; |
95 } | 96 } |
96 | 97 |
97 bool QuicFlowController::FlowControlViolation() { | 98 bool QuicFlowController::FlowControlViolation() { |
98 if (highest_received_byte_offset_ > receive_window_offset_) { | 99 if (highest_received_byte_offset_ > receive_window_offset_) { |
99 QUIC_DLOG(INFO) << ENDPOINT << "Flow control violation on stream " << id_ | 100 QUIC_DLOG(INFO) << ENDPOINT << "Flow control violation on stream " << id_ |
100 << ", receive window offset: " << receive_window_offset_ | 101 << ", receive window offset: " << receive_window_offset_ |
101 << ", highest received byte offset: " | 102 << ", highest received byte offset: " |
102 << highest_received_byte_offset_; | 103 << highest_received_byte_offset_; |
103 return true; | 104 return true; |
104 } | 105 } |
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272 if (receive_window_size_ != receive_window_offset_) { | 273 if (receive_window_size_ != receive_window_offset_) { |
273 QUIC_BUG << "receive_window_size_:" << receive_window_size_ | 274 QUIC_BUG << "receive_window_size_:" << receive_window_size_ |
274 << " != receive_window_offset:" << receive_window_offset_; | 275 << " != receive_window_offset:" << receive_window_offset_; |
275 return; | 276 return; |
276 } | 277 } |
277 receive_window_size_ = size; | 278 receive_window_size_ = size; |
278 receive_window_offset_ = size; | 279 receive_window_offset_ = size; |
279 } | 280 } |
280 | 281 |
281 } // namespace net | 282 } // namespace net |
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