httpprovider.hxx

这是国外的resip协议栈

#ifndef RESIP_HttpProvider
#define RESIP_HttpProvider

#include "rutil/Mutex.hxx"
#include "resip/dum/TargetCommand.hxx"
#include <memory>

namespace resip
{
class TransactionUser;
class Data;
class GenericUri;
class TargetCommand;

//To provide this functionality, plug in an instance of
//HttpProviderFactory(before any instances of DialogUsageManager/SipStack are
//created. Null will be returned by default.
class HttpProviderFactory;

class HttpProvider
{
   public:
      //HttpProvider assumes memory
      static void setFactory(std::auto_ptr<HttpProviderFactory> fact);
      //ptr so users can check for existence
      static HttpProvider* instance();
      
      //.dcm. tu param will become a postable
      virtual void get(const GenericUri& target, const Data& tid, TransactionUser& tu, TargetCommand::Target& commandTarget)=0;
      virtual ~HttpProvider(){} //impl. singleton destructor pattern later
   private:
      static HttpProvider* mInstance;
      static std::auto_ptr<HttpProviderFactory> mFactory;
      static Mutex mMutex;      
};

class HttpProviderFactory
{
   public:
      virtual HttpProvider* createHttpProvider()=0;
      virtual ~HttpProviderFactory(){}
};
}

#endif

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