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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 // A ClientSocketPoolBase is used to restrict the number of sockets open at | 5 // A ClientSocketPoolBase is used to restrict the number of sockets open at |
| 6 // a time. It also maintains a list of idle persistent sockets for reuse. | 6 // a time. It also maintains a list of idle persistent sockets for reuse. |
| 7 // Subclasses of ClientSocketPool should compose ClientSocketPoolBase to handle | 7 // Subclasses of ClientSocketPool should compose ClientSocketPoolBase to handle |
| 8 // the core logic of (1) restricting the number of active (connected or | 8 // the core logic of (1) restricting the number of active (connected or |
| 9 // connecting) sockets per "group" (generally speaking, the hostname), (2) | 9 // connecting) sockets per "group" (generally speaking, the hostname), (2) |
| 10 // maintaining a per-group list of idle, persistent sockets for reuse, and (3) | 10 // maintaining a per-group list of idle, persistent sockets for reuse, and (3) |
| 11 // limiting the total number of active sockets in the system. | 11 // limiting the total number of active sockets in the system. |
| 12 // | 12 // |
| 13 // ClientSocketPoolBase abstracts socket connection details behind ConnectJob, | 13 // ClientSocketPoolBase abstracts socket connection details behind ConnectJob, |
| 14 // ConnectJobFactory, and SocketParams. When a socket "slot" becomes available, | 14 // ConnectJobFactory, and SocketParams. When a socket "slot" becomes available, |
| 15 // the ClientSocketPoolBase will ask the ConnectJobFactory to create a | 15 // the ClientSocketPoolBase will ask the ConnectJobFactory to create a |
| 16 // ConnectJob with a SocketParams. Subclasses of ClientSocketPool should | 16 // ConnectJob with a SocketParams. Subclasses of ClientSocketPool should |
| 17 // implement their socket specific connection by subclassing ConnectJob and | 17 // implement their socket specific connection by subclassing ConnectJob and |
| 18 // implementing ConnectJob::ConnectInternal(). They can control the parameters | 18 // implementing ConnectJob::ConnectInternal(). They can control the parameters |
| 19 // passed to each new ConnectJob instance via their ConnectJobFactory subclass | 19 // passed to each new ConnectJob instance via their ConnectJobFactory subclass |
| 20 // and templated SocketParams parameter. | 20 // and templated SocketParams parameter. |
| 21 // | 21 // |
| 22 #ifndef NET_SOCKET_CLIENT_SOCKET_POOL_BASE_H_ | 22 #ifndef NET_SOCKET_CLIENT_SOCKET_POOL_BASE_H_ |
| 23 #define NET_SOCKET_CLIENT_SOCKET_POOL_BASE_H_ | 23 #define NET_SOCKET_CLIENT_SOCKET_POOL_BASE_H_ |
| 24 | 24 |
| 25 #include <stddef.h> |
| 26 #include <stdint.h> |
| 27 |
| 25 #include <cstddef> | 28 #include <cstddef> |
| 26 #include <deque> | 29 #include <deque> |
| 27 #include <list> | 30 #include <list> |
| 28 #include <map> | 31 #include <map> |
| 29 #include <set> | 32 #include <set> |
| 30 #include <string> | 33 #include <string> |
| 31 #include <vector> | 34 #include <vector> |
| 32 | 35 |
| 33 #include "base/basictypes.h" | 36 #include "base/macros.h" |
| 34 #include "base/memory/ref_counted.h" | 37 #include "base/memory/ref_counted.h" |
| 35 #include "base/memory/scoped_ptr.h" | 38 #include "base/memory/scoped_ptr.h" |
| 36 #include "base/memory/weak_ptr.h" | 39 #include "base/memory/weak_ptr.h" |
| 37 #include "base/time/time.h" | 40 #include "base/time/time.h" |
| 38 #include "base/timer/timer.h" | 41 #include "base/timer/timer.h" |
| 39 #include "net/base/address_list.h" | 42 #include "net/base/address_list.h" |
| 40 #include "net/base/completion_callback.h" | 43 #include "net/base/completion_callback.h" |
| 41 #include "net/base/load_states.h" | 44 #include "net/base/load_states.h" |
| 42 #include "net/base/load_timing_info.h" | 45 #include "net/base/load_timing_info.h" |
| 43 #include "net/base/net_errors.h" | 46 #include "net/base/net_errors.h" |
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| 150 | 153 |
| 151 // ClientSocketPoolBaseHelper is an internal class that implements almost all | 154 // ClientSocketPoolBaseHelper is an internal class that implements almost all |
| 152 // the functionality from ClientSocketPoolBase without using templates. | 155 // the functionality from ClientSocketPoolBase without using templates. |
| 153 // ClientSocketPoolBase adds templated definitions built on top of | 156 // ClientSocketPoolBase adds templated definitions built on top of |
| 154 // ClientSocketPoolBaseHelper. This class is not for external use, please use | 157 // ClientSocketPoolBaseHelper. This class is not for external use, please use |
| 155 // ClientSocketPoolBase instead. | 158 // ClientSocketPoolBase instead. |
| 156 class NET_EXPORT_PRIVATE ClientSocketPoolBaseHelper | 159 class NET_EXPORT_PRIVATE ClientSocketPoolBaseHelper |
| 157 : public ConnectJob::Delegate, | 160 : public ConnectJob::Delegate, |
| 158 public NetworkChangeNotifier::IPAddressObserver { | 161 public NetworkChangeNotifier::IPAddressObserver { |
| 159 public: | 162 public: |
| 160 typedef uint32 Flags; | 163 typedef uint32_t Flags; |
| 161 | 164 |
| 162 // Used to specify specific behavior for the ClientSocketPool. | 165 // Used to specify specific behavior for the ClientSocketPool. |
| 163 enum Flag { | 166 enum Flag { |
| 164 NORMAL = 0, // Normal behavior. | 167 NORMAL = 0, // Normal behavior. |
| 165 NO_IDLE_SOCKETS = 0x1, // Do not return an idle socket. Create a new one. | 168 NO_IDLE_SOCKETS = 0x1, // Do not return an idle socket. Create a new one. |
| 166 }; | 169 }; |
| 167 | 170 |
| 168 class NET_EXPORT_PRIVATE Request { | 171 class NET_EXPORT_PRIVATE Request { |
| 169 public: | 172 public: |
| 170 Request(ClientSocketHandle* handle, | 173 Request(ClientSocketHandle* handle, |
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| 872 }; | 875 }; |
| 873 | 876 |
| 874 internal::ClientSocketPoolBaseHelper helper_; | 877 internal::ClientSocketPoolBaseHelper helper_; |
| 875 | 878 |
| 876 DISALLOW_COPY_AND_ASSIGN(ClientSocketPoolBase); | 879 DISALLOW_COPY_AND_ASSIGN(ClientSocketPoolBase); |
| 877 }; | 880 }; |
| 878 | 881 |
| 879 } // namespace net | 882 } // namespace net |
| 880 | 883 |
| 881 #endif // NET_SOCKET_CLIENT_SOCKET_POOL_BASE_H_ | 884 #endif // NET_SOCKET_CLIENT_SOCKET_POOL_BASE_H_ |
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