jrtplib3.9.1 example2

  
  
  
  

   
   
   
    这个例子好像有点问题，自身运行的话，自身发送的那个160长度的silencebuffer在本窗口是无法收到的。而且在一个1分钟的循环内，反复地调用sendpacket发送silencebuffer,也不知道是何用意。把本机端口和目标端口都改正成相同的，也无法接收到。
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    后来用例子1做发送方，用本例子做接收方，这样可以收到从例子1里发出的数据。截图如下：
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
   用本例发送，例子3接收，也能收到发来的数据，但是还是不明白为什么本例为何要反复发送同一个数据？也许仅仅是个例子而已。先这样吧。
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
   silencebuffer 
  
  
  
  
  
  
  
  

   
   
   
   #include "rtpsession.h"
  
  
  
  
  
  
  
  

   
   
   
   #include "rtpsessionparams.h"
  
  
  
  
  
  
  
  

   
   
   
   #include "rtpudpv4transmitter.h"
  
  
  
  
  
  
  
  

   
   
   
   #include "rtpipv4address.h"
  
  
  
  
  
  
  
  

   
   
   
   #include "rtptimeutilities.h"
  
  
  
  
  
  
  
  

   
   
   
   #include "rtppacket.h"
  
  
  
  
  
  
  
  

   
   
   
   #include <stdlib.h>
  
  
  
  
  
  
  
  

   
   
   
   #include <iostream>
  
  
  
  
  
  
  
  

   
   
   
   

  
  
  
  
  
  
  
  

   
   
   
   using 
   
   
   
   namespace 
   
   
   
   jrtplib
   
   
   
   ;
  
  
  
  
  
  
  
  

   
   
   
   

  
  
  
  
  
  
  
  

   
   
   
   int 
   
   
   
   main
   
   
   
   (
   
   
   
   void
   
   
   
   )
  
  
  
  
  
  
  
  

   
   
   
   {
  
  
  
  
  
  
  
  

   
   
   
   #ifdef WIN32
  
  
  
  
  
  
  
  
	
   
   
   
   WSADATA 
   
   
   
   dat
   
   
   
   ;
  
  
  
  
  
  
  
  
	
   
   
   
   WSAStartup
   
   
   
   (
   
   
   
   MAKEWORD
   
   
   
   (
   
   
   
   2
   
   
   
   ,
   
   
   
   2
   
   
   
   ),
   
   
   
   &
   
   
   
   dat
   
   
   
   );
  
  
  
  
  
  
  
  

   
   
   
   #endif 
   
   
   
   // WIN32
  
  
  
  
  
  
  
  

   
   
   
   

  
  
  
  
  
  
  
  
	
   
   
   
   RTPSession 
   
   
   
   session
   
   
   
   ;
  
  
  
  
  
  
  
  

   
   
   
   

  
  
  
  
  
  
  
  
	
   
   
   
   RTPSessionParams 
   
   
   
   sessionparams
   
   
   
   ;
  
  
  
  
  
  
  
  
	
   
   
   
   sessionparams
   
   
   
   .
   
   
   
   SetOwnTimestampUnit
   
   
   
   (
   
   
   
   1.0
   
   
   
   /
   
   
   
   8000.0
   
   
   
   );
  
  
  
  
  
  
  
  

   
   
   
   

  
  
  
  
  
  
  
  
	
   
   
   
   RTPUDPv4TransmissionParams 
   
   
   
   transparams
   
   
   
   ;
  
  
  
  
  
  
  
  
	
   
   
   
   transparams
   
   
   
   .
   
   
   
   SetPortbase
   
   
   
   (
   
   
   
   8000
   
   
   
   );
  
  
  
  
  
  
  
  

   
   
   
   

  
  
  
  
  
  
  
  
	
   
   
   
   int 
   
   
   
   status 
   
   
   
   = 
   
   
   
   session
   
   
   
   .
   
   
   
   Create
   
   
   
   (
   
   
   
   sessionparams
   
   
   
   ,
   
   
   
   &
   
   
   
   transparams
   
   
   
   );
  
  
  
  
  
  
  
  
	
   
   
   
   if 
   
   
   
   (
   
   
   
   status 
   
   
   
   < 
   
   
   
   0
   
   
   
   )
  
  
  
  
  
  
  
  
	
   
   
   
   {
  
  
  
  
  
  
  
  
		
   
   
   
   std
   
   
   
   ::
   
   
   
   cerr 
   
   
   
   << 
   
   
   
   RTPGetErrorString
   
   
   
   (
   
   
   
   status
   
   
   
   ) 
   
   
   
   << 
   
   
   
   std
   
   
   
   ::
   
   
   
   endl
   
   
   
   ;
  
  
  
  
  
  
  
  
		
   
   
   
   exit
   
   
   
   (
   
   
   
   -
   
   
   
   1
   
   
   
   );
  
  
  
  
  
  
  
  
	
   
   
   
   }
  
  
  
  
  
  
  
  

   
   
   
   

  
  
  
  
  
  
  
  
	
   
   
   
   uint8_t 
   
   
   
   localip
   
   
   
   []
   
   
   
   =
   
   
   
   {
   
   
   
   127
   
   
   
   ,
   
   
   
   0
   
   
   
   ,
   
   
   
   0
   
   
   
   ,
   
   
   
   1
   
   
   
   };
  
  
  
  
  
  
  
  
	
   
   
   
   RTPIPv4Address 
   
   
   
   addr
   
   
   
   (
   
   
   
   localip
   
   
   
   ,
   
   
   
   9000
   
   
   
   );
  
  
  
  
  
  
  
  

   
   
   
   

  
  
  
  
  
  
  
  
	
   
   
   
   status 
   
   
   
   = 
   
   
   
   session
   
   
   
   .
   
   
   
   AddDestination
   
   
   
   (
   
   
   
   addr
   
   
   
   );
  
  
  
  
  
  
  
  
	
   
   
   
   if 
   
   
   
   (
   
   
   
   status 
   
   
   
   < 
   
   
   
   0
   
   
   
   )
  
  
  
  
  
  
  
  
	
   
   
   
   {
  
  
  
  
  
  
  
  
		
   
   
   
   std
   
   
   
   ::
   
   
   
   cerr 
   
   
   
   << 
   
   
   
   RTPGetErrorString
   
   
   
   (
   
   
   
   status
   
   
   
   ) 
   
   
   
   << 
   
   
   
   std
   
   
   
   ::
   
   
   
   endl
   
   
   
   ;
  
  
  
  
  
  
  
  
		
   
   
   
   exit
   
   
   
   (
   
   
   
   -
   
   
   
   1
   
   
   
   );
  
  
  
  
  
  
  
  
	
   
   
   
   }
  
  
  
  
  
  
  
  

   
   
   
   

  
  
  
  
  
  
  
  
	
   
   
   
   session
   
   
   
   .
   
   
   
   SetDefaultPayloadType
   
   
   
   (
   
   
   
   96
   
   
   
   );
  
  
  
  
  
  
  
  
	
   
   
   
   session
   
   
   
   .
   
   
   
   SetDefaultMark
   
   
   
   (
   
   
   
   false
   
   
   
   );
  
  
  
  
  
  
  
  
	
   
   
   
   session
   
   
   
   .
   
   
   
   SetDefaultTimestampIncrement
   
   
   
   (
   
   
   
   160
   
   
   
   );
  
  
  
  
  
  
  
  

   
   
   
   

  
  
  
  
  
  
  
  
	
   
   
   
   uint8_t 
   
   
   
   silencebuffer
   
   
   
   [
   
   
   
   160
   
   
   
   ];
  
  
  
  
  
  
  
  
	
   
   
   
   for 
   
   
   
   (
   
   
   
   int 
   
   
   
   i 
   
   
   
   = 
   
   
   
   0 
   
   
   
   ; 
   
   
   
   i 
   
   
   
   < 
   
   
   
   160 
   
   
   
   ; 
   
   
   
   i
   
   
   
   ++
   
   
   
   )
  
  
  
  
  
  
  
  
		
   
   
   
   silencebuffer
   
   
   
   [
   
   
   
   i
   
   
   
   ] 
   
   
   
   = 
   
   
   
   128
   
   
   
   ;
  
  
  
  
  
  
  
  

   
   
   
   

  
  
  
  
  
  
  
  
	
   
   
   
   RTPTime 
   
   
   
   delay
   
   
   
   (
   
   
   
   0.020
   
   
   
   );
  
  
  
  
  
  
  
  
	
   
   
   
   RTPTime 
   
   
   
   starttime 
   
   
   
   = 
   
   
   
   RTPTime
   
   
   
   ::
   
   
   
   CurrentTime
   
   
   
   ();
  
  
  
  
  
  
  
  

   
   
   
   

  
  
  
  
  
  
  
  
	
   
   
   
   bool 
   
   
   
   done 
   
   
   
   = 
   
   
   
   false
   
   
   
   ;
  
  
  
  
  
  
  
  
	
   
   
   
   while 
   
   
   
   (
   
   
   
   !
   
   
   
   done
   
   
   
   )
  
  
  
  
  
  
  
  
	
   
   
   
   {
  
  
  
  
  
  
  
  
		
   
   
   
   status 
   
   
   
   = 
   
   
   
   session
   
   
   
   .
   
   
   
   SendPacket
   
   
   
   (
   
   
   
   silencebuffer
   
   
   
   ,
   
   
   
   160
   
   
   
   );
  
  
  
  
  
  
  
  
		
   
   
   
   if 
   
   
   
   (
   
   
   
   status 
   
   
   
   < 
   
   
   
   0
   
   
   
   )
  
  
  
  
  
  
  
  
		
   
   
   
   {
  
  
  
  
  
  
  
  
			
   
   
   
   std
   
   
   
   ::
   
   
   
   cerr 
   
   
   
   << 
   
   
   
   RTPGetErrorString
   
   
   
   (
   
   
   
   status
   
   
   
   ) 
   
   
   
   << 
   
   
   
   std
   
   
   
   ::
   
   
   
   endl
   
   
   
   ;
  
  
  
  
  
  
  
  
			
   
   
   
   exit
   
   
   
   (
   
   
   
   -
   
   
   
   1
   
   
   
   );
  
  
  
  
  
  
  
  
		
   
   
   
   }
  
  
  
  
  
  
  
  

   
   
   
   

  
  
  
  
  
  
  
  
		
   
   
   
   session
   
   
   
   .
   
   
   
   BeginDataAccess
   
   
   
   ();
  
  
  
  
  
  
  
  
		
   
   
   
   if 
   
   
   
   (
   
   
   
   session
   
   
   
   .
   
   
   
   GotoFirstSource
   
   
   
   ())
  
  
  
  
  
  
  
  
		
   
   
   
   {
  
  
  
  
  
  
  
  
			
   
   
   
   do
  
  
  
  
  
  
  
  
			
   
   
   
   {
  
  
  
  
  
  
  
  
				
   
   
   
   RTPPacket 
   
   
   
   *
   
   
   
   packet
   
   
   
   ;
  
  
  
  
  
  
  
  

   
   
   
   

  
  
  
  
  
  
  
  
				
   
   
   
   while 
   
   
   
   ((
   
   
   
   packet 
   
   
   
   = 
   
   
   
   session
   
   
   
   .
   
   
   
   GetNextPacket
   
   
   
   ()) 
   
   
   
   != 
   
   
   
   0
   
   
   
   )
  
  
  
  
  
  
  
  
				
   
   
   
   {
  
  
  
  
  
  
  
  
					
   
   
   
   std
   
   
   
   ::
   
   
   
   cout 
   
   
   
   << 
   
   
   
   "Got packet with " 
  
  
  
  
  
  
  
  
					          
   
   
   
   << 
   
   
   
   "extended sequence number " 
  
  
  
  
  
  
  
  
					          
   
   
   
   << 
   
   
   
   packet
   
   
   
   ->
   
   
   
   GetExtendedSequenceNumber
   
   
   
   () 
  
  
  
  
  
  
  
  
					          
   
   
   
   << 
   
   
   
   " from SSRC " 
   
   
   
   << 
   
   
   
   packet
   
   
   
   ->
   
   
   
   GetSSRC
   
   
   
   () 
  
  
  
  
  
  
  
  
					          
   
   
   
   << 
   
   
   
   std
   
   
   
   ::
   
   
   
   endl
   
   
   
   ;
  
  
  
  
  
  
  
  
					
   
   
   
   session
   
   
   
   .
   
   
   
   DeletePacket
   
   
   
   (
   
   
   
   packet
   
   
   
   );
  
  
  
  
  
  
  
  
				
   
   
   
   }
  
  
  
  
  
  
  
  
			
   
   
   
   } 
   
   
   
   while 
   
   
   
   (
   
   
   
   session
   
   
   
   .
   
   
   
   GotoNextSource
   
   
   
   ());
  
  
  
  
  
  
  
  
		
   
   
   
   }
  
  
  
  
  
  
  
  
		
   
   
   
   session
   
   
   
   .
   
   
   
   EndDataAccess
   
   
   
   ();
  
  
  
  
  
  
  
  

   
   
   
   

  
  
  
  
  
  
  
  
		
   
   
   
   RTPTime
   
   
   
   ::
   
   
   
   Wait
   
   
   
   (
   
   
   
   delay
   
   
   
   );
  
  
  
  
  
  
  
  

   
   
   
   

  
  
  
  
  
  
  
  
		
   
   
   
   RTPTime 
   
   
   
   t 
   
   
   
   = 
   
   
   
   RTPTime
   
   
   
   ::
   
   
   
   CurrentTime
   
   
   
   ();
  
  
  
  
  
  
  
  
		
   
   
   
   t 
   
   
   
   -= 
   
   
   
   starttime
   
   
   
   ;
  
  
  
  
  
  
  
  
		
   
   
   
   if 
   
   
   
   (
   
   
   
   t 
   
   
   
   > 
   
   
   
   RTPTime
   
   
   
   (
   
   
   
   60.0
   
   
   
   ))
  
  
  
  
  
  
  
  
			
   
   
   
   done 
   
   
   
   = 
   
   
   
   true
   
   
   
   ;
  
  
  
  
  
  
  
  
	
   
   
   
   }
  
  
  
  
  
  
  
  

   
   
   
   

  
  
  
  
  
  
  
  
	
   
   
   
   delay 
   
   
   
   = 
   
   
   
   RTPTime
   
   
   
   (
   
   
   
   10.0
   
   
   
   );
  
  
  
  
  
  
  
  
	
   
   
   
   session
   
   
   
   .
   
   
   
   BYEDestroy
   
   
   
   (
   
   
   
   delay
   
   
   
   ,
   
   
   
   "Time's up"
   
   
   
   ,
   
   
   
   9
   
   
   
   );
  
  
  
  
  
  
  
  

   
   
   
    
  
  
  
  
  
  
  
  

   
   
   
   #ifdef WIN32
  
  
  
  
  
  
  
  
	
   
   
   
   WSACleanup
   
   
   
   ();
  
  
  
  
  
  
  
  

   
   
   
   #endif 
   
   
   
   // WIN32
  
  
  
  
  
  
  
  
	
   
   
   
   return 
   
   
   
   0
   
   
   
   ;
  
  
  
  
  
  
  
  

   
   
   
   }