RequestHandler.hxx

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#ifndef REQUEST_HANDLER_HXX
#define REQUEST_HANDLER_HXX
 
#include <string>
 
#include "DataBuffer.hxx"
#include "StunMessage.hxx"
#include "TurnManager.hxx"
#include "TurnAllocationManager.hxx"
 
namespace reTurn {
 
class AsyncSocketBase;
 
class RequestHandler
{
public:
   explicit RequestHandler(TurnManager& turnManager, 
                           const asio::ip::address* prim3489Address = 0, unsigned short* prim3489Port = 0,
                           const asio::ip::address* alt3489Address = 0, unsigned short* alt3489Port = 0);
 
   RequestHandler(const RequestHandler&) = delete;
   RequestHandler(RequestHandler&&) = delete;
 
   RequestHandler& operator=(const RequestHandler&) = delete;
   RequestHandler& operator=(RequestHandler&&) = delete;
 
   typedef enum
   {
      NoResponseToSend,
      RespondFromReceiving,
      RespondFromAlternatePort,
      RespondFromAlternateIp,
      RespondFromAlternateIpPort
   } ProcessResult;
 
   ProcessResult processStunMessage(AsyncSocketBase* turnSocket, TurnAllocationManager& turnAllocationManager, StunMessage& request, StunMessage& response, bool isRFC3489BackwardsCompatServer=false);
   void processTurnData(TurnAllocationManager& turnAllocationManager, unsigned short channelNumber, const StunTuple& localTuple, const StunTuple& remoteTuple, const std::shared_ptr<DataBuffer>& data);
 
   const ReTurnConfig& getConfig() { return mTurnManager.getConfig(); }
   TurnManager& getTurnManager() { return mTurnManager; }
 
private:
 
   TurnManager& mTurnManager;
 
   // RFC3489 Server List
   bool mRFC3489SupportEnabled;
   asio::ip::address mPrim3489Address;
   unsigned short mPrim3489Port;
   asio::ip::address mAlt3489Address;
   unsigned short mAlt3489Port;
 
   resip::Data mPrivateNonceKey;
 
   // Authentication handler
   bool handleAuthentication(StunMessage& request, StunMessage& response);
 
   // Specific request processors
   ProcessResult processStunBindingRequest(StunMessage& request, StunMessage& response, bool isRFC3489BackwardsCompatServer);
   ProcessResult processStunSharedSecretRequest(StunMessage& request, StunMessage& response);
   ProcessResult processTurnAllocateRequest(AsyncSocketBase* turnSocket, TurnAllocationManager& turnAllocationManager, StunMessage& request, StunMessage& response);
   ProcessResult processTurnRefreshRequest(TurnAllocationManager& turnAllocationManager, StunMessage& request, StunMessage& response);
   ProcessResult processTurnCreatePermissionRequest(TurnAllocationManager& turnAllocationManager, StunMessage& request, StunMessage& response);
   ProcessResult processTurnChannelBindRequest(TurnAllocationManager& turnAllocationManager, StunMessage& request, StunMessage& response);
 
   // Specific Indication processors
   void processTurnSendIndication(TurnAllocationManager& turnAllocationManager, StunMessage& request);
 
   // Utility methods
   void buildErrorResponse(StunMessage& response, unsigned short errorCode, const char* msg);
   void buildErrorResponseWithRealmAndNonce(StunMessage& response, unsigned short errorCode, const char* msg, const resip::Data& realm, const StunMessage& request);
   void generateNonce(const resip::Data& timestamp, resip::Data& nonce, const StunMessage& request);
   enum CheckNonceResult { Valid, NotValid, Expired };
   CheckNonceResult checkNonce(const resip::Data& nonce, const StunMessage& request);
};
 
} 
 
#endif
 
 
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 Copyright (c) 2007-2008, Plantronics, Inc.
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