statelessproxy.hxx

这是国外的resip协议栈

#if !defined(STATELESS_PROXY_HXX)
#define STATELESS_PROXY_HXX

#include "resip/stack/SipStack.hxx"
#include "rutil/Data.hxx"
#include "rutil/ThreadIf.hxx"

namespace resip
{

class StatelessProxy : public resip::SipStack, public resip::ThreadIf
{
   public:
      // If targetHost=0, use dns (SRV, etc) to route the request
      StatelessProxy(const char* proxyHost, int proxyPort, 
                     const char* targetHost=0, int targetPort=0, const char* proto=0);
      virtual ~StatelessProxy(){};
      void thread();
      const resip::Uri& uri() const { return mProxyUrl; }

   protected:
      // will be called just before the request is forwarded. Return true if the
      // request is to be forwarded. Return false otherwise
      // by default return true. 
      virtual bool onForwardRequest(resip::SipMessage* msg);

      // will be called just before the response is forwarded. Return true to
      // forward the response. 
      virtual bool onForwardResponse(resip::SipMessage* msg);
      
   private:
      // returns false if request did NOT validate
      bool requestValidation(resip::SipMessage* msg);// 16.3
      void preprocess(resip::SipMessage* msg); // 16.4 
      void forwardRequest(resip::SipMessage* msg); // 16.6
      void handleResponse(resip::SipMessage* msg);
      
      void sendResponse(resip::SipMessage* request, int code, const resip::Data& reason=resip::Data::Empty);
      
   private:
      bool mLoose; // is a loose router
      bool mUseTarget;
      resip::Uri mTarget;
      resip::Uri mProxyUrl;
};
 
}

#endif

/* ====================================================================
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