FlowManager.hxx

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#if !defined(FlowManager_hxx)
#define FlowManager_hxx
 
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
 
#include "FlowContext.hxx"
#include "MediaStream.hxx"
#include "FlowManagerException.hxx"
#include "RTCPEventLoggingHandler.hxx"
 
#include "dtls_wrapper/DtlsFactory.hxx"
#include <openssl/crypto.h>
#include <openssl/ssl.h>
 
#include <asio.hpp>
#include <asio/ssl.hpp>
 
#include <map>
#include <memory>
#include <utility>
 
using namespace reTurn;
 
namespace flowmanager
{
 
class IOServiceThread;
class FlowDtlsTimerContext;
 
class FlowManager
{
public:  
   FlowManager();  // throws FlowManagerException
   virtual ~FlowManager();
 
   // This API assumes that RTCP localBinding is always the same as RTP binding but add one to the port number
   // We can add a new API in the future to accomodate, custom RTCP bindings as required
   MediaStream* createMediaStream(MediaStreamHandler& mediaStreamHandler,
                                  const StunTuple& localBinding, 
                                  bool rtcpEnabled = true,
                                  MediaStream::NatTraversalMode natTraversalMode = MediaStream::NoNatTraversal,
                                  const char* natTraversalServerHostname = 0, 
                                  unsigned short natTraversalServerPort = 0, 
                                  const char* stunUsername = 0,
                                  const char* stunPassword = 0,
                                  bool forceCOMedia = false,
                                  std::shared_ptr<FlowContext> context = nullptr);
 
   void initializeDtlsFactory(const char* certAor);
#ifdef USE_SSL
   // Creates the self-signed RSA certificate initializeDtlsFactory uses, for the AOR sip:<pAor>,
   // signed with SHA-256.  Returns non-zero on success.
   static int createCert(const resip::Data& pAor, int expireDays, int keyLen, X509*& outCert, EVP_PKEY*& outKey);
#endif
   dtls::DtlsFactory* getDtlsFactory() { return mDtlsFactory; }
 
#ifdef USE_SSL
   bool addTlsRootCertificates(const resip::Data& rootCertificatesFile);
#endif
 
   void setValidateTlsServerHostname(bool validate) { mValidateTlsServerHostname = validate; }
 
   void setRTCPEventLoggingHandler(std::shared_ptr<RTCPEventLoggingHandler> handler) noexcept { mRtcpEventLoggingHandler = handler; }
   RTCPEventLoggingHandler* getRTCPEventLoggingHandler() const noexcept { return 0 != mRtcpEventLoggingHandler.get() ? mRtcpEventLoggingHandler.get() : 0; }
 
protected: 
 
private:
   static void srtpEventHandler(srtp_event_data_t *data);
 
   std::shared_ptr<RTCPEventLoggingHandler> mRtcpEventLoggingHandler;
 
   // Member variables used to manager asio io service thread
   asio::io_context mIOService;
   IOServiceThread* mIOServiceThread;
   asio::executor_work_guard<asio::io_context::executor_type>* mIOServiceWork;
   asio::ssl::context mSslContext;
   
   X509* mClientCert;
   EVP_PKEY* mClientKey;
   dtls::DtlsFactory* mDtlsFactory;
   FlowDtlsTimerContext* mDtlsTimerContext;  // owned by mDtlsFactory
   bool mValidateTlsServerHostname = true;
};
 
}
 
#endif
 
 
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 Copyright (c) 2026 SIP Spectrum, Inc. https://www.sipspectrum.com
 Copyright (c) 2007-2008, Plantronics, Inc.
 All rights reserved.
 
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    may be used to endorse or promote products derived from this 
    software without specific prior written permission. 
 
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 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
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 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
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