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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 #ifndef NET_SOCKET_TCP_SOCKET_LIBEVENT_H_ | 5 #ifndef NET_SOCKET_TCP_SOCKET_LIBEVENT_H_ |
6 #define NET_SOCKET_TCP_SOCKET_LIBEVENT_H_ | 6 #define NET_SOCKET_TCP_SOCKET_LIBEVENT_H_ |
7 | 7 |
8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
9 #include "base/callback.h" | 9 #include "base/callback.h" |
10 #include "base/compiler_specific.h" | 10 #include "base/compiler_specific.h" |
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77 // NetLog::TYPE_TCP_CONNECT. | 77 // NetLog::TYPE_TCP_CONNECT. |
78 // | 78 // |
79 // TODO(yzshen): Change logging format and let TCPClientSocket log the | 79 // TODO(yzshen): Change logging format and let TCPClientSocket log the |
80 // start/end of a series of connect attempts itself. | 80 // start/end of a series of connect attempts itself. |
81 void StartLoggingMultipleConnectAttempts(const AddressList& addresses); | 81 void StartLoggingMultipleConnectAttempts(const AddressList& addresses); |
82 void EndLoggingMultipleConnectAttempts(int net_error); | 82 void EndLoggingMultipleConnectAttempts(int net_error); |
83 | 83 |
84 const BoundNetLog& net_log() const { return net_log_; } | 84 const BoundNetLog& net_log() const { return net_log_; } |
85 | 85 |
86 private: | 86 private: |
87 // States that a fast open socket attempt can result in. | 87 // States that using a socket with TCP FastOpen can lead to. |
88 enum FastOpenStatus { | 88 enum FastOpenStatus { |
89 FAST_OPEN_STATUS_UNKNOWN, | 89 FAST_OPEN_STATUS_UNKNOWN, |
90 | 90 |
91 // The initial fast open connect attempted returned synchronously, | 91 // The initial TCP FastOpen connect attempted returned synchronously, |
92 // indicating that we had and sent a cookie along with the initial data. | 92 // indicating that we had and sent a cookie along with the initial data. |
93 FAST_OPEN_FAST_CONNECT_RETURN, | 93 FAST_OPEN_FAST_CONNECT_RETURN, |
94 | 94 |
95 // The initial fast open connect attempted returned asynchronously, | 95 // The initial TCP FastOpen connect attempted returned asynchronously, |
96 // indicating that we did not have a cookie for the server. | 96 // indicating that we did not have a cookie for the server. |
97 FAST_OPEN_SLOW_CONNECT_RETURN, | 97 FAST_OPEN_SLOW_CONNECT_RETURN, |
98 | 98 |
99 // Some other error occurred on connection, so we couldn't tell if | 99 // Some other error occurred on connection, so we couldn't tell if |
100 // fast open would have worked. | 100 // TCP FastOpen would have worked. |
101 FAST_OPEN_ERROR, | 101 FAST_OPEN_ERROR, |
102 | 102 |
103 // An attempt to do a fast open succeeded immediately | 103 // An attempt to do a TCP FastOpen succeeded immediately |
104 // (FAST_OPEN_FAST_CONNECT_RETURN) and we later confirmed that the server | 104 // (FAST_OPEN_FAST_CONNECT_RETURN) and we later confirmed that the server |
105 // had acked the data we sent. | 105 // had acked the data we sent. |
106 FAST_OPEN_SYN_DATA_ACK, | 106 FAST_OPEN_SYN_DATA_ACK, |
107 | 107 |
108 // An attempt to do a fast open succeeded immediately | 108 // An attempt to do a TCP FastOpen succeeded immediately |
109 // (FAST_OPEN_FAST_CONNECT_RETURN) and we later confirmed that the server | 109 // (FAST_OPEN_FAST_CONNECT_RETURN) and we later confirmed that the server |
110 // had nacked the data we sent. | 110 // had nacked the data we sent. |
111 FAST_OPEN_SYN_DATA_NACK, | 111 FAST_OPEN_SYN_DATA_NACK, |
112 | 112 |
113 // An attempt to do a fast open succeeded immediately | 113 // An attempt to do a TCP FastOpen succeeded immediately |
114 // (FAST_OPEN_FAST_CONNECT_RETURN) and our probe to determine if the | 114 // (FAST_OPEN_FAST_CONNECT_RETURN) and our probe to determine if the |
115 // socket was using fast open failed. | 115 // socket was using TCP FastOpen failed. |
116 FAST_OPEN_SYN_DATA_FAILED, | 116 FAST_OPEN_SYN_DATA_FAILED, |
117 | 117 |
118 // An attempt to do a fast open failed (FAST_OPEN_SLOW_CONNECT_RETURN) | 118 // An attempt to do a TCP FastOpen failed (FAST_OPEN_SLOW_CONNECT_RETURN) |
119 // and we later confirmed that the server had acked initial data. This | 119 // and we later confirmed that the server had acked initial data. This |
120 // should never happen (we didn't send data, so it shouldn't have | 120 // should never happen (we didn't send data, so it shouldn't have |
121 // been acked). | 121 // been acked). |
122 FAST_OPEN_NO_SYN_DATA_ACK, | 122 FAST_OPEN_NO_SYN_DATA_ACK, |
123 | 123 |
124 // An attempt to do a fast open failed (FAST_OPEN_SLOW_CONNECT_RETURN) | 124 // An attempt to do a TCP FastOpen failed (FAST_OPEN_SLOW_CONNECT_RETURN) |
125 // and we later discovered that the server had nacked initial data. This | 125 // and we later discovered that the server had nacked initial data. This |
126 // is the expected case results for FAST_OPEN_SLOW_CONNECT_RETURN. | 126 // is the expected case results for FAST_OPEN_SLOW_CONNECT_RETURN. |
127 FAST_OPEN_NO_SYN_DATA_NACK, | 127 FAST_OPEN_NO_SYN_DATA_NACK, |
128 | 128 |
129 // An attempt to do a fast open failed (FAST_OPEN_SLOW_CONNECT_RETURN) | 129 // An attempt to do a TCP FastOpen failed (FAST_OPEN_SLOW_CONNECT_RETURN) |
130 // and our later probe for ack/nack state failed. | 130 // and our later probe for ack/nack state failed. |
131 FAST_OPEN_NO_SYN_DATA_FAILED, | 131 FAST_OPEN_NO_SYN_DATA_FAILED, |
132 | 132 |
133 FAST_OPEN_MAX_VALUE | 133 FAST_OPEN_MAX_VALUE |
134 }; | 134 }; |
135 | 135 |
136 void AcceptCompleted(scoped_ptr<TCPSocketLibevent>* tcp_socket, | 136 void AcceptCompleted(scoped_ptr<TCPSocketLibevent>* tcp_socket, |
137 IPEndPoint* address, | 137 IPEndPoint* address, |
138 const CompletionCallback& callback, | 138 const CompletionCallback& callback, |
139 int rv); | 139 int rv); |
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178 bool logging_multiple_connect_attempts_; | 178 bool logging_multiple_connect_attempts_; |
179 | 179 |
180 BoundNetLog net_log_; | 180 BoundNetLog net_log_; |
181 | 181 |
182 DISALLOW_COPY_AND_ASSIGN(TCPSocketLibevent); | 182 DISALLOW_COPY_AND_ASSIGN(TCPSocketLibevent); |
183 }; | 183 }; |
184 | 184 |
185 } // namespace net | 185 } // namespace net |
186 | 186 |
187 #endif // NET_SOCKET_TCP_SOCKET_LIBEVENT_H_ | 187 #endif // NET_SOCKET_TCP_SOCKET_LIBEVENT_H_ |
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