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Side by Side Diff: net/socket/socket_libevent.h

Issue 1335423002: net: Remove 'libevent' from filenames. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: review Created 5 years, 3 months ago
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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_
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