Home | History | Annotate | Download | only in base 
      1 /*
      2  * libjingle
      3  * Copyright 2004--2011, Google Inc.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are met:
      7  *
      8  *  1. Redistributions of source code must retain the above copyright notice,
      9  *     this list of conditions and the following disclaimer.
     10  *  2. Redistributions in binary form must reproduce the above copyright notice,
     11  *     this list of conditions and the following disclaimer in the documentation
     12  *     and/or other materials provided with the distribution.
     13  *  3. The name of the author may not be used to endorse or promote products
     14  *     derived from this software without specific prior written permission.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
     19  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     20  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     23  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     25  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #ifndef TALK_P2P_BASE_PORTALLOCATORSESSIONPROXY_H_
     29 #define TALK_P2P_BASE_PORTALLOCATORSESSIONPROXY_H_
     30 
     31 #include <string>
     32 
     33 #include "talk/p2p/base/candidate.h"
     34 #include "talk/p2p/base/portallocator.h"
     35 
     36 namespace cricket {
     37 class PortAllocator;
     38 class PortAllocatorSessionProxy;
     39 class PortProxy;
     40 
     41 // This class maintains the list of cricket::Port* objects. Ports will be
     42 // deleted upon receiving SignalDestroyed signal. This class is used when
     43 // PORTALLOCATOR_ENABLE_BUNDLE flag is set.
     44 
     45 class PortAllocatorSessionMuxer : public talk_base::MessageHandler,
     46                                   public sigslot::has_slots<> {
     47  public:
     48   explicit PortAllocatorSessionMuxer(PortAllocatorSession* session);
     49   virtual ~PortAllocatorSessionMuxer();
     50 
     51   void RegisterSessionProxy(PortAllocatorSessionProxy* session_proxy);
     52 
     53   void OnPortReady(PortAllocatorSession* session, PortInterface* port);
     54   void OnPortDestroyed(PortInterface* port);
     55   void OnCandidatesAllocationDone(PortAllocatorSession* session);
     56 
     57   const std::vector<PortInterface*>& ports() { return ports_; }
     58 
     59   sigslot::signal1<PortAllocatorSessionMuxer*> SignalDestroyed;
     60 
     61  private:
     62   virtual void OnMessage(talk_base::Message *pmsg);
     63   void OnSessionProxyDestroyed(PortAllocatorSession* proxy);
     64   void SendAllocationDone_w(PortAllocatorSessionProxy* proxy);
     65   void SendAllocatedPorts_w(PortAllocatorSessionProxy* proxy);
     66 
     67   // Port will be deleted when SignalDestroyed received, otherwise delete
     68   // happens when PortAllocatorSession dtor is called.
     69   talk_base::Thread* worker_thread_;
     70   std::vector<PortInterface*> ports_;
     71   talk_base::scoped_ptr<PortAllocatorSession> session_;
     72   std::vector<PortAllocatorSessionProxy*> session_proxies_;
     73   bool candidate_done_signal_received_;
     74 };
     75 
     76 class PortAllocatorSessionProxy : public PortAllocatorSession {
     77  public:
     78   PortAllocatorSessionProxy(const std::string& content_name,
     79                             int component,
     80                             uint32 flags)
     81         // Use empty string as the ufrag and pwd because the proxy always uses
     82         // the ufrag and pwd from the underlying implementation.
     83       : PortAllocatorSession(content_name, component, "", "", flags),
     84         impl_(NULL) {
     85   }
     86 
     87   virtual ~PortAllocatorSessionProxy();
     88 
     89   PortAllocatorSession* impl() { return impl_; }
     90   void set_impl(PortAllocatorSession* session);
     91 
     92   // Forwards call to the actual PortAllocatorSession.
     93   virtual void StartGettingPorts();
     94   virtual void StopGettingPorts();
     95   virtual bool IsGettingPorts();
     96 
     97   virtual void set_generation(uint32 generation) {
     98     ASSERT(impl_ != NULL);
     99     impl_->set_generation(generation);
    100   }
    101 
    102   virtual uint32 generation() {
    103     ASSERT(impl_ != NULL);
    104     return impl_->generation();
    105   }
    106 
    107  private:
    108   void OnPortReady(PortAllocatorSession* session, PortInterface* port);
    109   void OnCandidatesReady(PortAllocatorSession* session,
    110                          const std::vector<Candidate>& candidates);
    111   void OnPortDestroyed(PortInterface* port);
    112   void OnCandidatesAllocationDone(PortAllocatorSession* session);
    113 
    114   // This is the actual PortAllocatorSession, owned by PortAllocator.
    115   PortAllocatorSession* impl_;
    116   std::map<PortInterface*, PortProxy*> proxy_ports_;
    117 
    118   friend class PortAllocatorSessionMuxer;
    119 };
    120 
    121 }  // namespace cricket
    122 
    123 #endif  // TALK_P2P_BASE_PORTALLOCATORSESSIONPROXY_H_
    124