testdtlsserver.cxx

这是国外的resip协议栈

#include <ctype.h>
#include <iostream>

#include "DtlsFactory.hxx"
#include "DtlsSocket.hxx"
#include "TestTimerContext.hxx"
#include "TestDtlsUdp.hxx"
#include "rutil/Data.hxx"
#include "rutil/Socket.hxx"
#include "CreateCert.hxx"
#include <openssl/srtp.h>

using namespace std;
using namespace dtls;
using namespace resip;

int main(int argc,char **argv)
{
   X509 *serverCert;
   EVP_PKEY *serverKey;

   resip::initNetwork();
   srtp_init();

   assert(argc==2);

   createCert(resip::Data("sip:[e-mail]"),365,1024,serverCert,serverKey);

   TestTimerContext *ourTimer=new TestTimerContext();
   DtlsFactory *serverFactory=new DtlsFactory(std::auto_ptr<DtlsTimerContext>(ourTimer),serverCert,serverKey);

   cout << "Created the factory\n";

   Socket fd = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
   if ( fd == -1 )
   {
      assert(0);
   }

   // Make the UDP socket context
   int port=atoi(argv[1]);
   struct sockaddr_in myaddr;
   memset((char*) &(myaddr),0, sizeof((myaddr)));
   myaddr.sin_family = AF_INET;
   myaddr.sin_addr.s_addr = htonl(INADDR_ANY);
   myaddr.sin_port = htons(port);
   int r=bind( fd,(struct sockaddr*)&myaddr, sizeof(myaddr));
   assert(r==0);

   cout << "Made our UDP socket\n";

   cout << "Entering wait loop\n";
   TestDtlsUdpSocketContext *sockContext=0;
   DtlsSocket *dtlsSocket;

   while(1)
   {
      FdSet fdset;
      unsigned char buffer[4096];
      struct sockaddr_in src;
      socklen_t srclen;
      int r;

      fdset.setRead(fd);

      UInt64 towait=ourTimer->getRemainingTime();
      // cerr << "Invoking select for time " << towait << endl;
      int toread=fdset.selectMilliSeconds(towait);
      ourTimer->updateTimer();

      if (toread >= 0) 
      {
         if (fdset.readyToRead(fd))
         {
            srclen=sizeof(src);
            r=recvfrom(fd, (char*)buffer, sizeof(buffer), 0, (sockaddr *)&src,&srclen);
            assert(r>=0);

            // The first packet initiates the association
            if(!sockContext)
            {
               sockContext=new TestDtlsUdpSocketContext(fd,&src);

               cout << "Made the socket context\n";          

               dtlsSocket=serverFactory->createServer(std::auto_ptr<DtlsSocketContext>(sockContext));

               cout << "Made the DTLS socket\n";
            }

            switch(DtlsFactory::demuxPacket(buffer,r))
            {
            case DtlsFactory::dtls:
               dtlsSocket->handlePacketMaybe(buffer,r);
               break;
            case DtlsFactory::rtp:
               unsigned char buf2[4096];
               unsigned int buf2l;

               sockContext->recvRtpData(buffer,r,buf2,&buf2l,sizeof(buf2));

               cout << "Read RTP data of length " << buf2l << endl;
               cout << buf2 << endl;

               for(unsigned int i=0;i<buf2l;i++)
               {
                  buf2[i]=toupper(buf2[i]);
               }

               // Now echo it back
               sockContext->sendRtpData((const unsigned char *)buf2,buf2l);

               break;
            default:
               break;
            }
         }
      }
   }

   exit(0);
}


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

 Provided under the terms of the Vovida Software License, Version 2.0.

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