Fix crash on IP address change.

net/socket/client_socket_pool_base.h

 // Copyright (c) 2010 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.
 //
 // A ClientSocketPoolBase is used to restrict the number of sockets open at
 // a time.  It also maintains a list of idle persistent sockets for reuse.
 // Subclasses of ClientSocketPool should compose ClientSocketPoolBase to handle
 // the core logic of (1) restricting the number of active (connected or
 // connecting) sockets per "group" (generally speaking, the hostname), (2)
 // maintaining a per-group list of idle, persistent sockets for reuse, and (3)
@@ skipping 21 matching lines @@
 #include "base/ref_counted.h"
 #include "base/scoped_ptr.h"
 #include "base/task.h"
 #include "base/time.h"
 #include "base/timer.h"
 #include "net/base/address_list.h"
 #include "net/base/completion_callback.h"
 #include "net/base/load_states.h"
 #include "net/base/net_errors.h"
 #include "net/base/net_log.h"
+#include "net/base/network_change_notifier.h"
 #include "net/base/request_priority.h"
 #include "net/socket/client_socket.h"
 #include "net/socket/client_socket_pool.h"
 
 namespace net {
 
 class ClientSocketHandle;
 
 // ConnectJob provides an abstract interface for "connecting" a socket.
 // The connection may involve host resolution, tcp connection, ssl connection,
@@ skipping 62 matching lines @@
 
 namespace internal {
 
 // ClientSocketPoolBaseHelper is an internal class that implements almost all
 // the functionality from ClientSocketPoolBase without using templates.
 // ClientSocketPoolBase adds templated definitions built on top of
 // ClientSocketPoolBaseHelper.  This class is not for external use, please use
 // ClientSocketPoolBase instead.
 class ClientSocketPoolBaseHelper
     : public base::RefCounted<ClientSocketPoolBaseHelper>,
-      public ConnectJob::Delegate {
+      public ConnectJob::Delegate,
+      public NetworkChangeNotifier::Observer {
  public:
   class Request {
    public:
     Request(ClientSocketHandle* handle,
             CompletionCallback* callback,
             RequestPriority priority,
             const BoundNetLog& net_log);
 
     virtual ~Request();
 
@@ skipping 26 matching lines @@
 
    private:
     DISALLOW_COPY_AND_ASSIGN(ConnectJobFactory);
   };
 
   ClientSocketPoolBaseHelper(
       int max_sockets,
       int max_sockets_per_group,
       base::TimeDelta unused_idle_socket_timeout,
       base::TimeDelta used_idle_socket_timeout,
-      ConnectJobFactory* connect_job_factory);
+      ConnectJobFactory* connect_job_factory,
+      NetworkChangeNotifier* network_change_notifier);
 
   // See ClientSocketPool::RequestSocket for documentation on this function.
   // Note that |request| must be heap allocated.  If ERR_IO_PENDING is returned,
   // then ClientSocketPoolBaseHelper takes ownership of |request|.
   int RequestSocket(const std::string& group_name, const Request* request);
 
   // See ClientSocketPool::CancelRequest for documentation on this function.
   void CancelRequest(const std::string& group_name,
                      const ClientSocketHandle* handle);
 
@@ skipping 19 matching lines @@
 
   int ConnectRetryIntervalMs() const {
     // TODO(mbelshe): Make this tuned dynamically based on measured RTT.
     //                For now, just use the max retry interval.
     return ClientSocketPool::kMaxConnectRetryIntervalMs;
   }
 
   // ConnectJob::Delegate methods:
   virtual void OnConnectJobComplete(int result, ConnectJob* job);
 
+  // NetworkChangeNotifier::Observer methods:
+  virtual void OnIPAddressChanged();
+
   // For testing.
   bool may_have_stalled_group() const { return may_have_stalled_group_; }
 
   int NumConnectJobsInGroup(const std::string& group_name) const {
     return group_map_.find(group_name)->second.jobs.size();
   }
 
   // Closes all idle sockets if |force| is true.  Else, only closes idle
   // sockets that timed out or can't be reused.  Made public for testing.
   void CleanupIdleSockets(bool force);
@@ skipping 200 matching lines @@
   // |max_sockets_per_group_| limit. So choosing the next request involves
   // selecting the highest priority request across *all* groups.
   //
   // Since reaching the maximum number of sockets is an edge case, we make note
   // of when it happens, and thus avoid doing the slower "scan all groups"
   // in the common case.
   bool may_have_stalled_group_;
 
   const scoped_ptr<ConnectJobFactory> connect_job_factory_;
 
+  NetworkChangeNotifier* const network_change_notifier_;
+
   // TODO(vandebo) Remove when backup jobs move to TCPClientSocketPool
   bool backup_jobs_enabled_;
 
   // A factory to pin the backup_job tasks.
   ScopedRunnableMethodFactory<ClientSocketPoolBaseHelper> method_factory_;
 };
 
 }  // namespace internal
 
 // The maximum duration, in seconds, to keep unused idle persistent sockets
@@ skipping 46 matching lines @@
   // sockets a "group" can have.  |unused_idle_socket_timeout| specifies how
   // long to leave an unused idle socket open before closing it.
   // |used_idle_socket_timeout| specifies how long to leave a previously used
   // idle socket open before closing it.
   ClientSocketPoolBase(
       int max_sockets,
       int max_sockets_per_group,
       const std::string& name,
       base::TimeDelta unused_idle_socket_timeout,
       base::TimeDelta used_idle_socket_timeout,
-      ConnectJobFactory* connect_job_factory)
+      ConnectJobFactory* connect_job_factory,
+      NetworkChangeNotifier* network_change_notifier)
       : name_(name),
         helper_(new internal::ClientSocketPoolBaseHelper(
           max_sockets, max_sockets_per_group,
           unused_idle_socket_timeout, used_idle_socket_timeout,
-          new ConnectJobFactoryAdaptor(connect_job_factory))) {}
+          new ConnectJobFactoryAdaptor(connect_job_factory),
+          network_change_notifier)) {}
 
   virtual ~ClientSocketPoolBase() {}
 
   // These member functions simply forward to ClientSocketPoolBaseHelper.
 
   // RequestSocket bundles up the parameters into a Request and then forwards to
   // ClientSocketPoolBaseHelper::RequestSocket().  Note that the memory
   // ownership is transferred in the asynchronous (ERR_IO_PENDING) case.
   int RequestSocket(const std::string& group_name,
                     const SocketParams& params,
@@ skipping 99 matching lines @@
   // the posting of the task and the execution, then we'll hit the DCHECK that
   // |ClientSocketPoolBaseHelper::group_map_| is empty.
   scoped_refptr<internal::ClientSocketPoolBaseHelper> helper_;
 
   DISALLOW_COPY_AND_ASSIGN(ClientSocketPoolBase);
 };
 
 }  // namespace net
 
 #endif  // NET_SOCKET_CLIENT_SOCKET_POOL_BASE_H_