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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/quic_flow_controller.h" | 5 #include "net/quic/quic_flow_controller.h" |
6 | 6 |
7 #include "base/format_macros.h" | 7 #include "base/format_macros.h" |
8 #include "base/strings/stringprintf.h" | 8 #include "base/strings/stringprintf.h" |
9 #include "net/quic/quic_utils.h" | 9 #include "net/quic/quic_utils.h" |
10 #include "net/quic/test_tools/quic_connection_peer.h" | 10 #include "net/quic/test_tools/quic_connection_peer.h" |
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37 QuicByteCount send_window_; | 37 QuicByteCount send_window_; |
38 QuicByteCount receive_window_; | 38 QuicByteCount receive_window_; |
39 QuicByteCount max_receive_window_; | 39 QuicByteCount max_receive_window_; |
40 scoped_ptr<QuicFlowController> flow_controller_; | 40 scoped_ptr<QuicFlowController> flow_controller_; |
41 MockConnection connection_; | 41 MockConnection connection_; |
42 }; | 42 }; |
43 | 43 |
44 TEST_F(QuicFlowControllerTest, SendingBytes) { | 44 TEST_F(QuicFlowControllerTest, SendingBytes) { |
45 Initialize(); | 45 Initialize(); |
46 | 46 |
47 EXPECT_TRUE(flow_controller_->IsEnabled()); | |
48 EXPECT_FALSE(flow_controller_->IsBlocked()); | 47 EXPECT_FALSE(flow_controller_->IsBlocked()); |
49 EXPECT_FALSE(flow_controller_->FlowControlViolation()); | 48 EXPECT_FALSE(flow_controller_->FlowControlViolation()); |
50 EXPECT_EQ(send_window_, flow_controller_->SendWindowSize()); | 49 EXPECT_EQ(send_window_, flow_controller_->SendWindowSize()); |
51 | 50 |
52 // Send some bytes, but not enough to block. | 51 // Send some bytes, but not enough to block. |
53 flow_controller_->AddBytesSent(send_window_ / 2); | 52 flow_controller_->AddBytesSent(send_window_ / 2); |
54 EXPECT_FALSE(flow_controller_->IsBlocked()); | 53 EXPECT_FALSE(flow_controller_->IsBlocked()); |
55 EXPECT_EQ(send_window_ / 2, flow_controller_->SendWindowSize()); | 54 EXPECT_EQ(send_window_ / 2, flow_controller_->SendWindowSize()); |
56 | 55 |
57 // Send enough bytes to block. | 56 // Send enough bytes to block. |
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79 flow_controller_->AddBytesSent(send_window_ * 10), | 78 flow_controller_->AddBytesSent(send_window_ * 10), |
80 base::StringPrintf("Trying to send an extra %" PRIu64 " bytes", | 79 base::StringPrintf("Trying to send an extra %" PRIu64 " bytes", |
81 send_window_ * 10)); | 80 send_window_ * 10)); |
82 EXPECT_TRUE(flow_controller_->IsBlocked()); | 81 EXPECT_TRUE(flow_controller_->IsBlocked()); |
83 EXPECT_EQ(0u, flow_controller_->SendWindowSize()); | 82 EXPECT_EQ(0u, flow_controller_->SendWindowSize()); |
84 } | 83 } |
85 | 84 |
86 TEST_F(QuicFlowControllerTest, ReceivingBytes) { | 85 TEST_F(QuicFlowControllerTest, ReceivingBytes) { |
87 Initialize(); | 86 Initialize(); |
88 | 87 |
89 EXPECT_TRUE(flow_controller_->IsEnabled()); | |
90 EXPECT_FALSE(flow_controller_->IsBlocked()); | 88 EXPECT_FALSE(flow_controller_->IsBlocked()); |
91 EXPECT_FALSE(flow_controller_->FlowControlViolation()); | 89 EXPECT_FALSE(flow_controller_->FlowControlViolation()); |
92 EXPECT_EQ(kInitialSessionFlowControlWindowForTest, | 90 EXPECT_EQ(kInitialSessionFlowControlWindowForTest, |
93 QuicFlowControllerPeer::ReceiveWindowSize(flow_controller_.get())); | 91 QuicFlowControllerPeer::ReceiveWindowSize(flow_controller_.get())); |
94 | 92 |
95 // Receive some bytes, updating highest received offset, but not enough to | 93 // Receive some bytes, updating highest received offset, but not enough to |
96 // fill flow control receive window. | 94 // fill flow control receive window. |
97 EXPECT_TRUE( | 95 EXPECT_TRUE( |
98 flow_controller_->UpdateHighestReceivedOffset(1 + receive_window_ / 2)); | 96 flow_controller_->UpdateHighestReceivedOffset(1 + receive_window_ / 2)); |
99 EXPECT_FALSE(flow_controller_->FlowControlViolation()); | 97 EXPECT_FALSE(flow_controller_->FlowControlViolation()); |
100 EXPECT_EQ((receive_window_ / 2) - 1, | 98 EXPECT_EQ((receive_window_ / 2) - 1, |
101 QuicFlowControllerPeer::ReceiveWindowSize(flow_controller_.get())); | 99 QuicFlowControllerPeer::ReceiveWindowSize(flow_controller_.get())); |
102 | 100 |
103 // Consume enough bytes to send a WINDOW_UPDATE frame. | 101 // Consume enough bytes to send a WINDOW_UPDATE frame. |
104 EXPECT_CALL(connection_, SendWindowUpdate(stream_id_, ::testing::_)).Times(1); | 102 EXPECT_CALL(connection_, SendWindowUpdate(stream_id_, ::testing::_)).Times(1); |
105 | 103 |
106 flow_controller_->AddBytesConsumed(1 + receive_window_ / 2); | 104 flow_controller_->AddBytesConsumed(1 + receive_window_ / 2); |
107 | 105 |
108 // Result is that once again we have a fully open receive window. | 106 // Result is that once again we have a fully open receive window. |
109 EXPECT_FALSE(flow_controller_->FlowControlViolation()); | 107 EXPECT_FALSE(flow_controller_->FlowControlViolation()); |
110 EXPECT_EQ(kInitialSessionFlowControlWindowForTest, | 108 EXPECT_EQ(kInitialSessionFlowControlWindowForTest, |
111 QuicFlowControllerPeer::ReceiveWindowSize(flow_controller_.get())); | 109 QuicFlowControllerPeer::ReceiveWindowSize(flow_controller_.get())); |
112 } | 110 } |
113 | 111 |
114 TEST_F(QuicFlowControllerTest, OnlySendBlockedFrameOncePerOffset) { | 112 TEST_F(QuicFlowControllerTest, OnlySendBlockedFrameOncePerOffset) { |
115 Initialize(); | 113 Initialize(); |
116 | 114 |
117 // Test that we don't send duplicate BLOCKED frames. We should only send one | 115 // Test that we don't send duplicate BLOCKED frames. We should only send one |
118 // BLOCKED frame at a given send window offset. | 116 // BLOCKED frame at a given send window offset. |
119 EXPECT_TRUE(flow_controller_->IsEnabled()); | |
120 EXPECT_FALSE(flow_controller_->IsBlocked()); | 117 EXPECT_FALSE(flow_controller_->IsBlocked()); |
121 EXPECT_FALSE(flow_controller_->FlowControlViolation()); | 118 EXPECT_FALSE(flow_controller_->FlowControlViolation()); |
122 EXPECT_EQ(send_window_, flow_controller_->SendWindowSize()); | 119 EXPECT_EQ(send_window_, flow_controller_->SendWindowSize()); |
123 | 120 |
124 // Send enough bytes to block. | 121 // Send enough bytes to block. |
125 flow_controller_->AddBytesSent(send_window_); | 122 flow_controller_->AddBytesSent(send_window_); |
126 EXPECT_TRUE(flow_controller_->IsBlocked()); | 123 EXPECT_TRUE(flow_controller_->IsBlocked()); |
127 EXPECT_EQ(0u, flow_controller_->SendWindowSize()); | 124 EXPECT_EQ(0u, flow_controller_->SendWindowSize()); |
128 | 125 |
129 // Expect that 2 BLOCKED frames should get sent in total. | 126 // Expect that 2 BLOCKED frames should get sent in total. |
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146 flow_controller_->AddBytesSent(send_window_); | 143 flow_controller_->AddBytesSent(send_window_); |
147 EXPECT_TRUE(flow_controller_->IsBlocked()); | 144 EXPECT_TRUE(flow_controller_->IsBlocked()); |
148 EXPECT_EQ(0u, flow_controller_->SendWindowSize()); | 145 EXPECT_EQ(0u, flow_controller_->SendWindowSize()); |
149 | 146 |
150 // BLOCKED frame should get sent as send offset has changed. | 147 // BLOCKED frame should get sent as send offset has changed. |
151 flow_controller_->MaybeSendBlocked(); | 148 flow_controller_->MaybeSendBlocked(); |
152 } | 149 } |
153 | 150 |
154 } // namespace test | 151 } // namespace test |
155 } // namespace net | 152 } // namespace net |
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