[#1722] Set crypto context in SRTP sessions

sflphone-common/src/audio/audiortp/AudioRtpSession.h

@@ -187,8 +187,6 @@ namespace sfl {
         _layerFrameSize = _audiolayer->getFrameSize(); // in ms
         _layerSampleRate = _audiolayer->getSampleRate();
 
-	// if(this->)
-
     }
     
     template <typename D>

sflphone-common/src/audio/audiortp/AudioSrtpSession.cpp

@@ -35,6 +35,11 @@ AudioSrtpSession::AudioSrtpSession (ManagerImpl * manager, SIPCall * sipcall) :
     _debug ("AudioSrtpSession initialized");
     initializeMasterKey();
     initializeMasterSalt();
+    initializeCryptoContext();
+    txCryptoCtx->deriveSrtpKeys(0);
+
+    setInQueueCryptoContext(txCryptoCtx);
+    setOutQueueCryptoContext(txCryptoCtx);
 }
 
 void AudioSrtpSession::initializeMasterKey(void)