SipSrvLookup.h

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//  
// Copyright (C) 2006 SIPez LLC. 
// Licensed to SIPfoundry under a Contributor Agreement. 
//
// Copyright (C) 2004-2006 SIPfoundry Inc.
// Licensed by SIPfoundry under the LGPL license.
//
// Copyright (C) 2004-2006 Pingtel Corp.  All rights reserved.
// Licensed to SIPfoundry under a Contributor Agreement.
//
// $$


#ifndef _SipSrvLookup_h_
#define _SipSrvLookup_h_

// SYSTEM INCLUDES
#if defined(_WIN32)
//#   include <resparse/wnt/netinet/in.h>
#elif defined(_VXWORKS)
#  include <netinet/in.h>
#elif defined(__pingtel_on_posix__)
#   include <netinet/in.h>
#else
#  error Unsupported target platform.
#endif

// APPLICATION INCLUDES
#include "os/OsDefs.h"
#include "os/OsMutex.h"
#include "os/OsSocket.h"

// DEFINES
// MACROS
// EXTERNAL FUNCTIONS
// EXTERNAL VARIABLES
// CONSTANTS
// STRUCTS

// TYPEDEFS

// FORWARD DECLARATIONS
class server_t;
typedef struct s_res_response
    res_response;

class SipSrvLookup
{
/* //////////////////////////// PUBLIC //////////////////////////////////// */
public:

   static server_t* servers(const char *domain,
                            const char *service,
                            OsSocket::IpProtocolSocketType socketType,
                            int port,
                            const char* srcIp
      );
   enum OptionCode {
      OptionCodeNone = 0,       
      OptionCodeFirst,          
      OptionCodeIgnoreSRV,      
      OptionCodeIgnoreNAPTR,    
      OptionCodeSortAnswers,    
      OptionCodePrintAnswers,   
      OptionCodeCNAMELimit,     
      OptionCodeNoDefaultTCP,   
      OptionCodeLast            
   };
   static inline int getOption(OptionCode option)
      {
         return options[option];
      }

   static void setOption(OptionCode option, int value);
   static void setDnsSrvTimeouts(int initialTimeoutInSecs,
                                 int retries
      );

   static void getDnsSrvTimeouts(int& initialTimeoutInSecs,
                                  int& retries);


   static void res_query_and_parse(const char* in_name,
                                   int type,
                                   res_response* in_response,
                                   const char*& out_name,
                                   res_response*& out_response
      );
/* //////////////////////////// PROTECTED ///////////////////////////////// */
protected:

   static OsMutex sMutex;

   static int options[OptionCodeLast+1];

/* //////////////////////////// PRIVATE /////////////////////////////////// */
private:
};


class server_t {
  public:
   
   static void setDnsSrvResolveEnabled(UtlBoolean& enabled);   

   char *host;                  
   OsSocket::IpProtocolSocketType type;
   struct sockaddr_in sin;      
   unsigned int priority;       
   unsigned int weight;         
   float score;                 

   server_t();
   static UtlBoolean mDnsSrvResolveEnabled;
   
   server_t(const server_t& rserver_t);

   server_t& operator=(const server_t& rhs);

   ~server_t();

   UtlBoolean isValidServerT();

   void getHostNameFromServerT(UtlString& hostName);

   void getIpAddressFromServerT(UtlString& hostName);

   int getPortFromServerT();

   unsigned int getWeightFromServerT();

   float getScoreFromServerT();

   unsigned int getPriorityFromServerT();

   OsSocket::IpProtocolSocketType getProtocolFromServerT();
};

#endif  // _SipSrvLookup_h_