Move socket related files from net/base to net/socket.

net/base/client_socket_pool.h

-// Copyright (c) 2006-2008 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.
-
-#ifndef NET_BASE_CLIENT_SOCKET_POOL_H_
-#define NET_BASE_CLIENT_SOCKET_POOL_H_
-
-#include <deque>
-#include <map>
-#include <string>
-
-#include "base/ref_counted.h"
-#include "net/base/completion_callback.h"
-#include "net/base/host_resolver.h"
-#include "net/base/load_states.h"
-
-namespace net {
-
-class ClientSocket;
-class ClientSocketHandle;
-
-// A ClientSocketPool is used to restrict the number of sockets open at a time.
-// It also maintains a list of idle persistent sockets.
-//
-class ClientSocketPool : public base::RefCounted<ClientSocketPool> {
- public:
-  // Requests a connected socket for a group_name.
-  //
-  // There are four possible results from calling this function:
-  // 1) RequestSocket returns OK and initializes |handle| with a reused socket.
-  // 2) RequestSocket returns OK with a newly connected socket.
-  // 3) RequestSocket returns ERR_IO_PENDING.  The handle will be added to a
-  // wait list until a socket is available to reuse or a new socket finishes
-  // connecting.  |priority| will determine the placement into the wait list.
-  // 4) An error occurred early on, so RequestSocket returns an error code.
-  //
-  // If this function returns OK, then |handle| is initialized upon return.
-  // The |handle|'s is_initialized method will return true in this case.  If a
-  // ClientSocket was reused, then ClientSocketPool will call
-  // |handle|->set_reused(true).  In either case, the socket will have been
-  // allocated and will be connected.  A client might want to know whether or
-  // not the socket is reused in order to know whether or not he needs to
-  // perform SSL connection or tunnel setup or to request a new socket if he
-  // encounters an error with the reused socket.
-  //
-  // If ERR_IO_PENDING is returned, then the callback will be used to notify the
-  // client of completion.
-  //
-  virtual int RequestSocket(const std::string& group_name,
-                            const HostResolver::RequestInfo& resolve_info,
-                            int priority,
-                            ClientSocketHandle* handle,
-                            CompletionCallback* callback) = 0;
-
-  // Called to cancel a RequestSocket call that returned ERR_IO_PENDING.  The
-  // same handle parameter must be passed to this method as was passed to the
-  // RequestSocket call being cancelled.  The associated CompletionCallback is
-  // not run.
-  virtual void CancelRequest(const std::string& group_name,
-                             const ClientSocketHandle* handle) = 0;
-
-  // Called to release a socket once the socket is no longer needed.  If the
-  // socket still has an established connection, then it will be added to the
-  // set of idle sockets to be used to satisfy future RequestSocket calls.
-  // Otherwise, the ClientSocket is destroyed.
-  virtual void ReleaseSocket(const std::string& group_name,
-                             ClientSocket* socket) = 0;
-
-  // Called to close any idle connections held by the connection manager.
-  virtual void CloseIdleSockets() = 0;
-
-  // Returns the HostResolver that will be used for host lookups.
-  virtual HostResolver* GetHostResolver() const = 0;
-
-  // The total number of idle sockets in the pool.
-  virtual int IdleSocketCount() const = 0;
-
-  // The total number of idle sockets in a connection group.
-  virtual int IdleSocketCountInGroup(const std::string& group_name) const = 0;
-
-  // Determine the LoadState of a connecting ClientSocketHandle.
-  virtual LoadState GetLoadState(const std::string& group_name,
-                                 const ClientSocketHandle* handle) const = 0;
-
- protected:
-  ClientSocketPool() {}
-  virtual ~ClientSocketPool() {}
-
- private:
-  friend class base::RefCounted<ClientSocketPool>;
-
-  DISALLOW_COPY_AND_ASSIGN(ClientSocketPool);
-};
-
-}  // namespace net
-
-#endif  // NET_BASE_CLIENT_SOCKET_POOL_H_