Remove //net (except for Android test stuff) and sdch

net/quic/quic_flow_controller.cc

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "net/quic/quic_flow_controller.h"
-
-#include "base/basictypes.h"
-#include "net/quic/quic_connection.h"
-#include "net/quic/quic_flags.h"
-#include "net/quic/quic_protocol.h"
-
-namespace net {
-
-#define ENDPOINT (is_server_ ? "Server: " : " Client: ")
-
-QuicFlowController::QuicFlowController(QuicConnection* connection,
-                                       QuicStreamId id,
-                                       bool is_server,
-                                       QuicStreamOffset send_window_offset,
-                                       QuicStreamOffset receive_window_offset,
-                                       QuicByteCount max_receive_window)
-    : connection_(connection),
-      id_(id),
-      is_enabled_(true),
-      is_server_(is_server),
-      bytes_consumed_(0),
-      highest_received_byte_offset_(0),
-      bytes_sent_(0),
-      send_window_offset_(send_window_offset),
-      receive_window_offset_(receive_window_offset),
-      max_receive_window_(max_receive_window),
-      last_blocked_send_window_offset_(0) {
-  DVLOG(1) << ENDPOINT << "Created flow controller for stream " << id_
-           << ", setting initial receive window offset to: "
-           << receive_window_offset_
-           << ", max receive window to: "
-           << max_receive_window_
-           << ", setting send window offset to: " << send_window_offset_;
-}
-
-void QuicFlowController::AddBytesConsumed(QuicByteCount bytes_consumed) {
-  if (!IsEnabled()) {
-    return;
-  }
-
-  bytes_consumed_ += bytes_consumed;
-  DVLOG(1) << ENDPOINT << "Stream " << id_ << " consumed: " << bytes_consumed_;
-
-  MaybeSendWindowUpdate();
-}
-
-bool QuicFlowController::UpdateHighestReceivedOffset(
-    QuicStreamOffset new_offset) {
-  if (!IsEnabled()) {
-    return false;
-  }
-
-  // Only update if offset has increased.
-  if (new_offset <= highest_received_byte_offset_) {
-    return false;
-  }
-
-  DVLOG(1) << ENDPOINT << "Stream " << id_
-           << " highest byte offset increased from: "
-           << highest_received_byte_offset_ << " to " << new_offset;
-  highest_received_byte_offset_ = new_offset;
-  return true;
-}
-
-void QuicFlowController::AddBytesSent(QuicByteCount bytes_sent) {
-  if (!IsEnabled()) {
-    return;
-  }
-
-  if (bytes_sent_ + bytes_sent > send_window_offset_) {
-    LOG(DFATAL) << ENDPOINT << "Stream " << id_ << " Trying to send an extra "
-                << bytes_sent << " bytes, when bytes_sent = " << bytes_sent_
-                << ", and send_window_offset_ = " << send_window_offset_;
-    bytes_sent_ = send_window_offset_;
-
-    // This is an error on our side, close the connection as soon as possible.
-    connection_->SendConnectionClose(QUIC_FLOW_CONTROL_SENT_TOO_MUCH_DATA);
-    return;
-  }
-
-  bytes_sent_ += bytes_sent;
-  DVLOG(1) << ENDPOINT << "Stream " << id_ << " sent: " << bytes_sent_;
-}
-
-bool QuicFlowController::FlowControlViolation() {
-  if (!IsEnabled()) {
-    return false;
-  }
-
-  if (highest_received_byte_offset_ > receive_window_offset_) {
-    LOG(ERROR) << ENDPOINT << "Flow control violation on stream "
-               << id_ << ", receive window offset: "
-               << receive_window_offset_
-               << ", highest received byte offset: "
-               << highest_received_byte_offset_;
-    return true;
-  }
-  return false;
-}
-
-void QuicFlowController::MaybeSendWindowUpdate() {
-  if (!IsEnabled()) {
-    return;
-  }
-
-  // Send WindowUpdate to increase receive window if
-  // (receive window offset - consumed bytes) < (max window / 2).
-  // This is behaviour copied from SPDY.
-  DCHECK_LT(bytes_consumed_, receive_window_offset_);
-  QuicStreamOffset consumed_window = receive_window_offset_ - bytes_consumed_;
-  QuicByteCount threshold = (max_receive_window_ / 2);
-
-  if (consumed_window < threshold) {
-    // Update our receive window.
-    receive_window_offset_ += (max_receive_window_ - consumed_window);
-
-    DVLOG(1) << ENDPOINT << "Sending WindowUpdate frame for stream " << id_
-             << ", consumed bytes: " << bytes_consumed_
-             << ", consumed window: " << consumed_window
-             << ", and threshold: " << threshold
-             << ", and max recvw: " << max_receive_window_
-             << ". New receive window offset is: " << receive_window_offset_;
-
-    // Inform the peer of our new receive window.
-    connection_->SendWindowUpdate(id_, receive_window_offset_);
-  }
-}
-
-void QuicFlowController::MaybeSendBlocked() {
-  if (!IsEnabled()) {
-    return;
-  }
-
-  if (SendWindowSize() == 0 &&
-      last_blocked_send_window_offset_ < send_window_offset_) {
-    DVLOG(1) << ENDPOINT << "Stream " << id_ << " is flow control blocked. "
-             << "Send window: " << SendWindowSize()
-             << ", bytes sent: " << bytes_sent_
-             << ", send limit: " << send_window_offset_;
-    // The entire send_window has been consumed, we are now flow control
-    // blocked.
-    connection_->SendBlocked(id_);
-
-    // Keep track of when we last sent a BLOCKED frame so that we only send one
-    // at a given send offset.
-    last_blocked_send_window_offset_ = send_window_offset_;
-  }
-}
-
-bool QuicFlowController::UpdateSendWindowOffset(
-    QuicStreamOffset new_send_window_offset) {
-  if (!IsEnabled()) {
-    return false;
-  }
-
-  // Only update if send window has increased.
-  if (new_send_window_offset <= send_window_offset_) {
-    return false;
-  }
-
-  DVLOG(1) << ENDPOINT << "UpdateSendWindowOffset for stream " << id_
-           << " with new offset " << new_send_window_offset
-           << " current offset: " << send_window_offset_
-           << " bytes_sent: " << bytes_sent_;
-
-  const bool blocked = IsBlocked();
-  send_window_offset_ = new_send_window_offset;
-  return blocked;
-}
-
-void QuicFlowController::Disable() {
-  is_enabled_ = false;
-}
-
-bool QuicFlowController::IsEnabled() const {
-  return is_enabled_;
-}
-
-bool QuicFlowController::IsBlocked() const {
-  return IsEnabled() && SendWindowSize() == 0;
-}
-
-uint64 QuicFlowController::SendWindowSize() const {
-  if (bytes_sent_ > send_window_offset_) {
-    return 0;
-  }
-  return send_window_offset_ - bytes_sent_;
-}
-
-}  // namespace net