OLD | NEW |
| (Empty) |
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 | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef NET_SOCKET_SOCKET_LIBEVENT_H_ | |
6 #define NET_SOCKET_SOCKET_LIBEVENT_H_ | |
7 | |
8 #include "base/basictypes.h" | |
9 #include "base/compiler_specific.h" | |
10 #include "base/macros.h" | |
11 #include "base/memory/ref_counted.h" | |
12 #include "base/memory/scoped_ptr.h" | |
13 #include "base/message_loop/message_loop.h" | |
14 #include "base/threading/thread_checker.h" | |
15 #include "net/base/completion_callback.h" | |
16 #include "net/base/net_util.h" | |
17 #include "net/socket/socket_descriptor.h" | |
18 | |
19 namespace net { | |
20 | |
21 class IOBuffer; | |
22 class IPEndPoint; | |
23 | |
24 // Socket class to provide asynchronous read/write operations on top of the | |
25 // posix socket api. It supports AF_INET, AF_INET6, and AF_UNIX addresses. | |
26 class NET_EXPORT_PRIVATE SocketLibevent | |
27 : public base::MessageLoopForIO::Watcher { | |
28 public: | |
29 SocketLibevent(); | |
30 ~SocketLibevent() override; | |
31 | |
32 // Opens a socket and returns net::OK if |address_family| is AF_INET, AF_INET6 | |
33 // or AF_UNIX. Otherwise, it does DCHECK() and returns a net error. | |
34 int Open(int address_family); | |
35 // Takes ownership of |socket|. | |
36 int AdoptConnectedSocket(SocketDescriptor socket, | |
37 const SockaddrStorage& peer_address); | |
38 // Releases ownership of |socket_fd_| to caller. | |
39 SocketDescriptor ReleaseConnectedSocket(); | |
40 | |
41 int Bind(const SockaddrStorage& address); | |
42 | |
43 int Listen(int backlog); | |
44 int Accept(scoped_ptr<SocketLibevent>* socket, | |
45 const CompletionCallback& callback); | |
46 | |
47 // Connects socket. On non-ERR_IO_PENDING error, sets errno and returns a net | |
48 // error code. On ERR_IO_PENDING, |callback| is called with a net error code, | |
49 // not errno, though errno is set if connect event happens with error. | |
50 // TODO(byungchul): Need more robust way to pass system errno. | |
51 int Connect(const SockaddrStorage& address, | |
52 const CompletionCallback& callback); | |
53 bool IsConnected() const; | |
54 bool IsConnectedAndIdle() const; | |
55 | |
56 // Multiple outstanding requests of the same type are not supported. | |
57 // Full duplex mode (reading and writing at the same time) is supported. | |
58 // On error which is not ERR_IO_PENDING, sets errno and returns a net error | |
59 // code. On ERR_IO_PENDING, |callback| is called with a net error code, not | |
60 // errno, though errno is set if read or write events happen with error. | |
61 // TODO(byungchul): Need more robust way to pass system errno. | |
62 int Read(IOBuffer* buf, int buf_len, const CompletionCallback& callback); | |
63 int Write(IOBuffer* buf, int buf_len, const CompletionCallback& callback); | |
64 | |
65 // Waits for next write event. This is called by TCPsocketLibevent for TCP | |
66 // fastopen after sending first data. Returns ERR_IO_PENDING if it starts | |
67 // waiting for write event successfully. Otherwise, returns a net error code. | |
68 // It must not be called after Write() because Write() calls it internally. | |
69 int WaitForWrite(IOBuffer* buf, int buf_len, | |
70 const CompletionCallback& callback); | |
71 | |
72 int GetLocalAddress(SockaddrStorage* address) const; | |
73 int GetPeerAddress(SockaddrStorage* address) const; | |
74 void SetPeerAddress(const SockaddrStorage& address); | |
75 // Returns true if peer address has been set regardless of socket state. | |
76 bool HasPeerAddress() const; | |
77 | |
78 void Close(); | |
79 | |
80 SocketDescriptor socket_fd() const { return socket_fd_; } | |
81 | |
82 private: | |
83 // base::MessageLoopForIO::Watcher methods. | |
84 void OnFileCanReadWithoutBlocking(int fd) override; | |
85 void OnFileCanWriteWithoutBlocking(int fd) override; | |
86 | |
87 int DoAccept(scoped_ptr<SocketLibevent>* socket); | |
88 void AcceptCompleted(); | |
89 | |
90 int DoConnect(); | |
91 void ConnectCompleted(); | |
92 | |
93 int DoRead(IOBuffer* buf, int buf_len); | |
94 void ReadCompleted(); | |
95 | |
96 int DoWrite(IOBuffer* buf, int buf_len); | |
97 void WriteCompleted(); | |
98 | |
99 void StopWatchingAndCleanUp(); | |
100 | |
101 SocketDescriptor socket_fd_; | |
102 | |
103 base::MessageLoopForIO::FileDescriptorWatcher accept_socket_watcher_; | |
104 scoped_ptr<SocketLibevent>* accept_socket_; | |
105 CompletionCallback accept_callback_; | |
106 | |
107 base::MessageLoopForIO::FileDescriptorWatcher read_socket_watcher_; | |
108 scoped_refptr<IOBuffer> read_buf_; | |
109 int read_buf_len_; | |
110 // External callback; called when read is complete. | |
111 CompletionCallback read_callback_; | |
112 | |
113 base::MessageLoopForIO::FileDescriptorWatcher write_socket_watcher_; | |
114 scoped_refptr<IOBuffer> write_buf_; | |
115 int write_buf_len_; | |
116 // External callback; called when write or connect is complete. | |
117 CompletionCallback write_callback_; | |
118 | |
119 // A connect operation is pending. In this case, |write_callback_| needs to be | |
120 // called when connect is complete. | |
121 bool waiting_connect_; | |
122 | |
123 scoped_ptr<SockaddrStorage> peer_address_; | |
124 | |
125 base::ThreadChecker thread_checker_; | |
126 | |
127 DISALLOW_COPY_AND_ASSIGN(SocketLibevent); | |
128 }; | |
129 | |
130 } // namespace net | |
131 | |
132 #endif // NET_SOCKET_SOCKET_LIBEVENT_H_ | |
OLD | NEW |