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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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