net: move socket files from net/base to net/socket

net/base/stream_listen_socket.h

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Stream-based listen socket implementation that handles reading and writing
-// to the socket, but does not handle creating the socket nor connecting
-// sockets, which are handled by subclasses on creation and in Accept,
-// respectively.
-
-// StreamListenSocket handles IO asynchronously in the specified MessageLoop.
-// This class is NOT thread safe. It uses WSAEVENT handles to monitor activity
-// in a given MessageLoop. This means that callbacks will happen in that loop's
-// thread always and that all other methods (including constructor and
-// destructor) should also be called from the same thread.
-
-#ifndef NET_BASE_STREAM_LISTEN_SOCKET_H_
-#define NET_BASE_STREAM_LISTEN_SOCKET_H_
-
-#include "build/build_config.h"
-
-#if defined(OS_WIN)
-#include <winsock2.h>
-#endif
-#include <string>
-#if defined(OS_WIN)
-#include "base/win/object_watcher.h"
-#elif defined(OS_POSIX)
-#include "base/message_loop.h"
-#endif
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "net/base/net_export.h"
-#include "net/base/stream_listen_socket.h"
-
-#if defined(OS_POSIX)
-typedef int SocketDescriptor;
-#else
-typedef SOCKET SocketDescriptor;
-#endif
-
-namespace net {
-
-class IPEndPoint;
-
-class NET_EXPORT StreamListenSocket
-    : public base::RefCountedThreadSafe<StreamListenSocket>,
-#if defined(OS_WIN)
-      public base::win::ObjectWatcher::Delegate {
-#elif defined(OS_POSIX)
-      public MessageLoopForIO::Watcher {
-#endif
-
- public:
-  // TODO(erikkay): this delegate should really be split into two parts
-  // to split up the listener from the connected socket.  Perhaps this class
-  // should be split up similarly.
-  class Delegate {
-   public:
-    // |server| is the original listening Socket, connection is the new
-    // Socket that was created.  Ownership of |connection| is transferred
-    // to the delegate with this call.
-    virtual void DidAccept(StreamListenSocket* server,
-                           StreamListenSocket* connection) = 0;
-    virtual void DidRead(StreamListenSocket* connection,
-                         const char* data,
-                         int len) = 0;
-    virtual void DidClose(StreamListenSocket* sock) = 0;
-
-   protected:
-    virtual ~Delegate() {}
-  };
-
-  // Send data to the socket.
-  void Send(const char* bytes, int len, bool append_linefeed = false);
-  void Send(const std::string& str, bool append_linefeed = false);
-
-  // Copies the local address to |address|. Returns a network error code.
-  int GetLocalAddress(IPEndPoint* address);
-
-  static const SocketDescriptor kInvalidSocket;
-  static const int kSocketError;
-
- protected:
-  enum WaitState {
-    NOT_WAITING      = 0,
-    WAITING_ACCEPT   = 1,
-    WAITING_READ     = 2
-  };
-
-  StreamListenSocket(SocketDescriptor s, Delegate* del);
-  virtual ~StreamListenSocket();
-
-  SocketDescriptor AcceptSocket();
-  virtual void Accept() = 0;
-
-  void Listen();
-  void Read();
-  void Close();
-  void CloseSocket(SocketDescriptor s);
-
-  // Pass any value in case of Windows, because in Windows
-  // we are not using state.
-  void WatchSocket(WaitState state);
-  void UnwatchSocket();
-
-  Delegate* const socket_delegate_;
-
- private:
-  friend class base::RefCountedThreadSafe<StreamListenSocket>;
-  friend class TransportClientSocketTest;
-
-  void SendInternal(const char* bytes, int len);
-
-#if defined(OS_WIN)
-  // ObjectWatcher delegate.
-  virtual void OnObjectSignaled(HANDLE object);
-  base::win::ObjectWatcher watcher_;
-  HANDLE socket_event_;
-#elif defined(OS_POSIX)
-  // Called by MessagePumpLibevent when the socket is ready to do I/O.
-  virtual void OnFileCanReadWithoutBlocking(int fd) OVERRIDE;
-  virtual void OnFileCanWriteWithoutBlocking(int fd) OVERRIDE;
-  WaitState wait_state_;
-  // The socket's libevent wrapper.
-  MessageLoopForIO::FileDescriptorWatcher watcher_;
-#endif
-
-  // NOTE: This is for unit test use only!
-  // Pause/Resume calling Read(). Note that ResumeReads() will also call
-  // Read() if there is anything to read.
-  void PauseReads();
-  void ResumeReads();
-
-  const SocketDescriptor socket_;
-  bool reads_paused_;
-  bool has_pending_reads_;
-
-  DISALLOW_COPY_AND_ASSIGN(StreamListenSocket);
-};
-
-// Abstract factory that must be subclassed for each subclass of
-// StreamListenSocket.
-class NET_EXPORT StreamListenSocketFactory {
- public:
-  virtual ~StreamListenSocketFactory() {}
-
-  // Returns a new instance of StreamListenSocket or NULL if an error occurred.
-  virtual scoped_refptr<StreamListenSocket> CreateAndListen(
-      StreamListenSocket::Delegate* delegate) const = 0;
-};
-
-}  // namespace net
-
-#endif  // NET_BASE_STREAM_LISTEN_SOCKET_H_