testdtlsclient.cxx

这是国外的resip协议栈

#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 *clientCert;
   EVP_PKEY *clientKey;

   resip::initNetwork();
   srtp_init();

   assert(argc==3);

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

   TestTimerContext *ourTimer=new TestTimerContext();
   DtlsFactory *clientFactory=new DtlsFactory(std::auto_ptr<DtlsTimerContext>(ourTimer),clientCert,clientKey);

   cout << "Created the factory\n";

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

   // Make the UDP socket context
   char *host=argv[1];
   int port=atoi(argv[2]);
   struct hostent *hp=gethostbyname(host);
   struct sockaddr_in peer_addr;
   assert(hp!=0);
   memset(&peer_addr,0,sizeof(struct in_addr));
   peer_addr.sin_addr=*(struct in_addr*)
      hp->h_addr_list[0];
   peer_addr.sin_family=AF_INET;
   peer_addr.sin_port=htons(port);

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

   TestDtlsUdpSocketContext *sockContext=new TestDtlsUdpSocketContext(fd,&peer_addr);

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

   DtlsSocket *dtlsSocket=clientFactory->createClient(std::auto_ptr<DtlsSocketContext>(sockContext));

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

   // Now kick things off
   dtlsSocket->startClient();

   cout << "Sent first packet, entering wait loop\n";

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

      fdset.setRead(fd);
#if !defined(WIN32)
      fdset.setRead(0);
#endif

      UInt64 towait=ourTimer->getRemainingTime();

      // cerr << "Invoking select for time " << towait << endl;

      int toread=fdset.selectMilliSeconds(towait);

      ourTimer->updateTimer();

      if(toread >=0)
      {
         if (fdset.readyToRead(0))
         {
            char inbuf[1024];
            cin.getline(inbuf, 1024);
            cout << "Read from stdin " << inbuf << endl;
            sockContext->sendRtpData((const unsigned char *)inbuf,strlen(inbuf));
         }
         if (fdset.readyToRead(fd))
         {
            srclen=sizeof(src);
            r=recvfrom(fd, reinterpret_cast<char*>(buffer),
               sizeof(buffer), 0, (sockaddr *)&src,&srclen);
            assert(r>=0);

            cerr << "Read bytes from peer, len = " << r << endl; 

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

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

               cout << "Read RTP data of length " << buf2l << endl;
               cout.write(reinterpret_cast<char *>(buf2),buf2l);
               cout << endl;
               break;
            default:
               break;
            }
         }
      }
   }

   exit(0);
}
     

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

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

 The Vovida Software License, Version 2.0 
 
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