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Side by Side Diff: net/quic/core/quic_flow_controller.cc

Issue 2850573002: Landing Recent QUIC changes until 3:35 PM, Apr 26, 2017 UTC-4 (Closed)
Patch Set: Remove Disconnect from ~QuicTestClient Created 3 years, 7 months ago
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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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195 } 195 }
196 196
197 if (available_window >= threshold) { 197 if (available_window >= threshold) {
198 QUIC_DVLOG(1) << ENDPOINT << "Not sending WindowUpdate for stream " << id_ 198 QUIC_DVLOG(1) << ENDPOINT << "Not sending WindowUpdate for stream " << id_
199 << ", available window: " << available_window 199 << ", available window: " << available_window
200 << " >= threshold: " << threshold; 200 << " >= threshold: " << threshold;
201 return; 201 return;
202 } 202 }
203 203
204 MaybeIncreaseMaxWindowSize(); 204 MaybeIncreaseMaxWindowSize();
205 SendWindowUpdate(available_window); 205 UpdateReceiveWindowOffsetAndSendWindowUpdate(available_window);
206 } 206 }
207 207
208 void QuicFlowController::SendWindowUpdate(QuicStreamOffset available_window) { 208 void QuicFlowController::UpdateReceiveWindowOffsetAndSendWindowUpdate(
209 QuicStreamOffset available_window) {
209 // Update our receive window. 210 // Update our receive window.
210 receive_window_offset_ += (receive_window_size_ - available_window); 211 receive_window_offset_ += (receive_window_size_ - available_window);
211 212
212 QUIC_DVLOG(1) << ENDPOINT << "Sending WindowUpdate frame for stream " << id_ 213 QUIC_DVLOG(1) << ENDPOINT << "Sending WindowUpdate frame for stream " << id_
213 << ", consumed bytes: " << bytes_consumed_ 214 << ", consumed bytes: " << bytes_consumed_
214 << ", available window: " << available_window 215 << ", available window: " << available_window
215 << ", and threshold: " << WindowUpdateThreshold() 216 << ", and threshold: " << WindowUpdateThreshold()
216 << ", and receive window size: " << receive_window_size_ 217 << ", and receive window size: " << receive_window_size_
217 << ". New receive window offset is: " << receive_window_offset_; 218 << ". New receive window offset is: " << receive_window_offset_;
218 219
219 // Inform the peer of our new receive window. 220 SendWindowUpdate();
220 connection_->SendWindowUpdate(id_, receive_window_offset_);
221 } 221 }
222 222
223 void QuicFlowController::MaybeSendBlocked() { 223 void QuicFlowController::MaybeSendBlocked() {
224 if (SendWindowSize() == 0 && 224 if (SendWindowSize() == 0 &&
225 last_blocked_send_window_offset_ < send_window_offset_) { 225 last_blocked_send_window_offset_ < send_window_offset_) {
226 QUIC_DLOG(INFO) << ENDPOINT << "Stream " << id_ 226 QUIC_DLOG(INFO) << ENDPOINT << "Stream " << id_
227 << " is flow control blocked. " 227 << " is flow control blocked. "
228 << "Send window: " << SendWindowSize() 228 << "Send window: " << SendWindowSize()
229 << ", bytes sent: " << bytes_sent_ 229 << ", bytes sent: " << bytes_sent_
230 << ", send limit: " << send_window_offset_; 230 << ", send limit: " << send_window_offset_;
(...skipping 27 matching lines...) Expand all
258 return was_previously_blocked; 258 return was_previously_blocked;
259 } 259 }
260 260
261 void QuicFlowController::EnsureWindowAtLeast(QuicByteCount window_size) { 261 void QuicFlowController::EnsureWindowAtLeast(QuicByteCount window_size) {
262 if (receive_window_size_limit_ >= window_size) { 262 if (receive_window_size_limit_ >= window_size) {
263 return; 263 return;
264 } 264 }
265 265
266 QuicStreamOffset available_window = receive_window_offset_ - bytes_consumed_; 266 QuicStreamOffset available_window = receive_window_offset_ - bytes_consumed_;
267 IncreaseWindowSize(); 267 IncreaseWindowSize();
268 SendWindowUpdate(available_window); 268 UpdateReceiveWindowOffsetAndSendWindowUpdate(available_window);
269 } 269 }
270 270
271 bool QuicFlowController::IsBlocked() const { 271 bool QuicFlowController::IsBlocked() const {
272 return SendWindowSize() == 0; 272 return SendWindowSize() == 0;
273 } 273 }
274 274
275 uint64_t QuicFlowController::SendWindowSize() const { 275 uint64_t QuicFlowController::SendWindowSize() const {
276 if (bytes_sent_ > send_window_offset_) { 276 if (bytes_sent_ > send_window_offset_) {
277 return 0; 277 return 0;
278 } 278 }
279 return send_window_offset_ - bytes_sent_; 279 return send_window_offset_ - bytes_sent_;
280 } 280 }
281 281
282 void QuicFlowController::UpdateReceiveWindowSize(QuicStreamOffset size) { 282 void QuicFlowController::UpdateReceiveWindowSize(QuicStreamOffset size) {
283 DCHECK_LE(size, receive_window_size_limit_); 283 DCHECK_LE(size, receive_window_size_limit_);
284 QUIC_DVLOG(1) << ENDPOINT << "UpdateReceiveWindowSize for stream " << id_ 284 QUIC_DVLOG(1) << ENDPOINT << "UpdateReceiveWindowSize for stream " << id_
285 << ": " << size; 285 << ": " << size;
286 if (receive_window_size_ != receive_window_offset_) { 286 if (receive_window_size_ != receive_window_offset_) {
287 QUIC_BUG << "receive_window_size_:" << receive_window_size_ 287 QUIC_BUG << "receive_window_size_:" << receive_window_size_
288 << " != receive_window_offset:" << receive_window_offset_; 288 << " != receive_window_offset:" << receive_window_offset_;
289 return; 289 return;
290 } 290 }
291 receive_window_size_ = size; 291 receive_window_size_ = size;
292 receive_window_offset_ = size; 292 receive_window_offset_ = size;
293 } 293 }
294 294
295 void QuicFlowController::SendWindowUpdate() {
296 connection_->SendWindowUpdate(id_, receive_window_offset_);
297 }
298
295 } // namespace net 299 } // namespace net
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