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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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_UDP_UDP_SOCKET_LIBEVENT_H_ | 5 #ifndef NET_UDP_UDP_SOCKET_LIBEVENT_H_ |
6 #define NET_UDP_UDP_SOCKET_LIBEVENT_H_ | 6 #define NET_UDP_UDP_SOCKET_LIBEVENT_H_ |
7 | 7 |
8 #include "base/memory/ref_counted.h" | 8 #include "base/memory/ref_counted.h" |
9 #include "base/memory/scoped_ptr.h" | 9 #include "base/memory/scoped_ptr.h" |
10 #include "base/message_loop/message_loop.h" | 10 #include "base/message_loop/message_loop.h" |
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21 namespace net { | 21 namespace net { |
22 | 22 |
23 class NET_EXPORT UDPSocketLibevent : public base::NonThreadSafe { | 23 class NET_EXPORT UDPSocketLibevent : public base::NonThreadSafe { |
24 public: | 24 public: |
25 UDPSocketLibevent(DatagramSocket::BindType bind_type, | 25 UDPSocketLibevent(DatagramSocket::BindType bind_type, |
26 const RandIntCallback& rand_int_cb, | 26 const RandIntCallback& rand_int_cb, |
27 net::NetLog* net_log, | 27 net::NetLog* net_log, |
28 const net::NetLog::Source& source); | 28 const net::NetLog::Source& source); |
29 virtual ~UDPSocketLibevent(); | 29 virtual ~UDPSocketLibevent(); |
30 | 30 |
31 // Opens the socket. | |
32 // Returns a net error code. | |
33 int Open(AddressFamily address_family); | |
34 | |
31 // Connect the socket to connect with a certain |address|. | 35 // Connect the socket to connect with a certain |address|. |
36 // Should be called after Open(). | |
rvargas (doing something else)
2014/12/02 23:28:09
The comments should be the same for both implement
hidehiko
2014/12/03 17:33:27
Done.
| |
32 // Returns a net error code. | 37 // Returns a net error code. |
33 int Connect(const IPEndPoint& address); | 38 int Connect(const IPEndPoint& address); |
34 | 39 |
35 // Bind the address/port for this socket to |address|. This is generally | 40 // Bind the address/port for this socket to |address|. This is generally |
36 // only used on a server. | 41 // only used on a server. Should be called after Open(). |
37 // Returns a net error code. | 42 // Returns a net error code. |
38 int Bind(const IPEndPoint& address); | 43 int Bind(const IPEndPoint& address); |
39 | 44 |
40 // Close the socket. | 45 // Close the socket. |
41 void Close(); | 46 void Close(); |
42 | 47 |
43 // Copy the remote udp address into |address| and return a network error code. | 48 // Copy the remote udp address into |address| and return a network error code. |
44 int GetPeerAddress(IPEndPoint* address) const; | 49 int GetPeerAddress(IPEndPoint* address) const; |
45 | 50 |
46 // Copy the local udp address into |address| and return a network error code. | 51 // Copy the local udp address into |address| and return a network error code. |
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87 // |callback| is the user callback function to call on complete. | 92 // |callback| is the user callback function to call on complete. |
88 // Returns a net error code, or ERR_IO_PENDING if the IO is in progress. | 93 // Returns a net error code, or ERR_IO_PENDING if the IO is in progress. |
89 // If ERR_IO_PENDING is returned, the caller must keep |buf| and |address| | 94 // If ERR_IO_PENDING is returned, the caller must keep |buf| and |address| |
90 // alive until the callback is called. | 95 // alive until the callback is called. |
91 int SendTo(IOBuffer* buf, | 96 int SendTo(IOBuffer* buf, |
92 int buf_len, | 97 int buf_len, |
93 const IPEndPoint& address, | 98 const IPEndPoint& address, |
94 const CompletionCallback& callback); | 99 const CompletionCallback& callback); |
95 | 100 |
96 // Set the receive buffer size (in bytes) for the socket. | 101 // Set the receive buffer size (in bytes) for the socket. |
102 // Returns a network error code. | |
97 int SetReceiveBufferSize(int32 size); | 103 int SetReceiveBufferSize(int32 size); |
98 | 104 |
99 // Set the send buffer size (in bytes) for the socket. | 105 // Set the send buffer size (in bytes) for the socket. |
106 // Returns a network error code. | |
100 int SetSendBufferSize(int32 size); | 107 int SetSendBufferSize(int32 size); |
101 | 108 |
102 // Returns true if the socket is already connected or bound. | 109 // Returns true if the socket is already connected or bound. |
103 bool is_connected() const { return socket_ != kInvalidSocket; } | 110 bool is_connected() const { return is_connected_; } |
104 | 111 |
105 const BoundNetLog& NetLog() const { return net_log_; } | 112 const BoundNetLog& NetLog() const { return net_log_; } |
106 | 113 |
107 // Sets corresponding flags in |socket_options_| to allow the socket | 114 // Sets corresponding flags in |socket_options_| to allow the socket |
108 // to share the local address to which the socket will be bound with | 115 // to share the local address to which the socket will be bound with |
109 // other processes. Should be called before Bind(). | 116 // other processes. Should be called before Bind(). |
110 void AllowAddressReuse(); | 117 void AllowAddressReuse(); |
111 | 118 |
112 // Sets corresponding flags in |socket_options_| to allow sending | 119 // Sets corresponding flags in |socket_options_| to allow or disallow sending |
113 // and receiving packets to and from broadcast addresses. Should be | 120 // and receiving packets to and from broadcast addresses. |
114 // called before Bind(). | 121 // Returns a network error code. |
115 void AllowBroadcast(); | 122 int SetBroadcast(bool broadcast); |
116 | 123 |
117 // Join the multicast group. | 124 // Join the multicast group. |
118 // |group_address| is the group address to join, could be either | 125 // |group_address| is the group address to join, could be either |
119 // an IPv4 or IPv6 address. | 126 // an IPv4 or IPv6 address. |
120 // Return a network error code. | 127 // Return a network error code. |
121 int JoinGroup(const IPAddressNumber& group_address) const; | 128 int JoinGroup(const IPAddressNumber& group_address) const; |
122 | 129 |
123 // Leave the multicast group. | 130 // Leave the multicast group. |
124 // |group_address| is the group address to leave, could be either | 131 // |group_address| is the group address to leave, could be either |
125 // an IPv4 or IPv6 address. If the socket hasn't joined the group, | 132 // an IPv4 or IPv6 address. If the socket hasn't joined the group, |
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162 // do anything on some platforms. | 169 // do anything on some platforms. |
163 // Return a network error code. | 170 // Return a network error code. |
164 int SetDiffServCodePoint(DiffServCodePoint dscp); | 171 int SetDiffServCodePoint(DiffServCodePoint dscp); |
165 | 172 |
166 // Resets the thread to be used for thread-safety checks. | 173 // Resets the thread to be used for thread-safety checks. |
167 void DetachFromThread(); | 174 void DetachFromThread(); |
168 | 175 |
169 private: | 176 private: |
170 enum SocketOptions { | 177 enum SocketOptions { |
171 SOCKET_OPTION_REUSE_ADDRESS = 1 << 0, | 178 SOCKET_OPTION_REUSE_ADDRESS = 1 << 0, |
172 SOCKET_OPTION_BROADCAST = 1 << 1, | 179 SOCKET_OPTION_MULTICAST_LOOP = 1 << 1 |
173 SOCKET_OPTION_MULTICAST_LOOP = 1 << 2 | |
174 }; | 180 }; |
175 | 181 |
176 class ReadWatcher : public base::MessageLoopForIO::Watcher { | 182 class ReadWatcher : public base::MessageLoopForIO::Watcher { |
177 public: | 183 public: |
178 explicit ReadWatcher(UDPSocketLibevent* socket) : socket_(socket) {} | 184 explicit ReadWatcher(UDPSocketLibevent* socket) : socket_(socket) {} |
179 | 185 |
180 // MessageLoopForIO::Watcher methods | 186 // MessageLoopForIO::Watcher methods |
181 | 187 |
182 void OnFileCanReadWithoutBlocking(int /* fd */) override; | 188 void OnFileCanReadWithoutBlocking(int /* fd */) override; |
183 | 189 |
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211 void DidCompleteWrite(); | 217 void DidCompleteWrite(); |
212 | 218 |
213 // Handles stats and logging. |result| is the number of bytes transferred, on | 219 // Handles stats and logging. |result| is the number of bytes transferred, on |
214 // success, or the net error code on failure. On success, LogRead takes in a | 220 // success, or the net error code on failure. On success, LogRead takes in a |
215 // sockaddr and its length, which are mandatory, while LogWrite takes in an | 221 // sockaddr and its length, which are mandatory, while LogWrite takes in an |
216 // optional IPEndPoint. | 222 // optional IPEndPoint. |
217 void LogRead(int result, const char* bytes, socklen_t addr_len, | 223 void LogRead(int result, const char* bytes, socklen_t addr_len, |
218 const sockaddr* addr) const; | 224 const sockaddr* addr) const; |
219 void LogWrite(int result, const char* bytes, const IPEndPoint* address) const; | 225 void LogWrite(int result, const char* bytes, const IPEndPoint* address) const; |
220 | 226 |
221 // Returns the OS error code (or 0 on success). | 227 // Returns a network error code. |
rvargas (doing something else)
2014/12/02 23:28:09
nit: network -> net
hidehiko
2014/12/03 17:33:27
Done.
| |
222 int CreateSocket(int addr_family); | 228 int CreateSocket(int addr_family); |
223 | 229 |
224 // Same as SendTo(), except that address is passed by pointer | 230 // Same as SendTo(), except that address is passed by pointer |
225 // instead of by reference. It is called from Write() with |address| | 231 // instead of by reference. It is called from Write() with |address| |
226 // set to NULL. | 232 // set to NULL. |
227 int SendToOrWrite(IOBuffer* buf, | 233 int SendToOrWrite(IOBuffer* buf, |
228 int buf_len, | 234 int buf_len, |
229 const IPEndPoint* address, | 235 const IPEndPoint* address, |
230 const CompletionCallback& callback); | 236 const CompletionCallback& callback); |
231 | 237 |
232 int InternalConnect(const IPEndPoint& address); | 238 int InternalConnect(const IPEndPoint& address); |
233 int InternalRecvFrom(IOBuffer* buf, int buf_len, IPEndPoint* address); | 239 int InternalRecvFrom(IOBuffer* buf, int buf_len, IPEndPoint* address); |
234 int InternalSendTo(IOBuffer* buf, int buf_len, const IPEndPoint* address); | 240 int InternalSendTo(IOBuffer* buf, int buf_len, const IPEndPoint* address); |
235 | 241 |
236 // Applies |socket_options_| to |socket_|. Should be called before | 242 // Applies |socket_options_| to |socket_|. Should be called before |
237 // Bind(). | 243 // Bind(). |
238 int SetSocketOptions(); | 244 int SetSocketOptions(); |
239 int DoBind(const IPEndPoint& address); | 245 int DoBind(const IPEndPoint& address); |
240 // Binds to a random port on |address|. | 246 // Binds to a random port on |address|. |
241 int RandomBind(const IPAddressNumber& address); | 247 int RandomBind(const IPAddressNumber& address); |
242 | 248 |
243 int socket_; | 249 int socket_; |
244 int addr_family_; | 250 int addr_family_; |
251 bool is_connected_; | |
245 | 252 |
246 // Bitwise-or'd combination of SocketOptions. Specifies the set of | 253 // Bitwise-or'd combination of SocketOptions. Specifies the set of |
247 // options that should be applied to |socket_| before Bind(). | 254 // options that should be applied to |socket_| before Bind(). |
248 int socket_options_; | 255 int socket_options_; |
249 | 256 |
250 // Multicast interface. | 257 // Multicast interface. |
251 uint32 multicast_interface_; | 258 uint32 multicast_interface_; |
252 | 259 |
253 // Multicast socket options cached for SetSocketOption. | 260 // Multicast socket options cached for SetSocketOption. |
254 // Cannot be used after Bind(). | 261 // Cannot be used after Bind(). |
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291 CompletionCallback write_callback_; | 298 CompletionCallback write_callback_; |
292 | 299 |
293 BoundNetLog net_log_; | 300 BoundNetLog net_log_; |
294 | 301 |
295 DISALLOW_COPY_AND_ASSIGN(UDPSocketLibevent); | 302 DISALLOW_COPY_AND_ASSIGN(UDPSocketLibevent); |
296 }; | 303 }; |
297 | 304 |
298 } // namespace net | 305 } // namespace net |
299 | 306 |
300 #endif // NET_UDP_UDP_SOCKET_LIBEVENT_H_ | 307 #endif // NET_UDP_UDP_SOCKET_LIBEVENT_H_ |
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