Фикс обмена ключами

app/providers/CallProvider/CallProvider.tsx

@@ -296,16 +296,19 @@ export function CallProvider(props : CallProviderProps) {
              * теперь мы получили ее публичную часть и можем создать общую 
              * секретную сессию для шифрования звонка
              */
+            const keys = generateSessionKeys();
             const sharedPublic = packet.getSharedPublic();
             if(!sharedPublic){
                 info("Received key exchange signal without shared public key");
                 return;
             }
-            if(!sessionKeys){
-                info("Received key exchange signal but session keys are not generated");
-                return;
-            }
-            const computedSharedSecret = nacl.box.before(Buffer.from(sharedPublic, 'hex'), sessionKeys.secretKey);
+            const signalPacket = new PacketSignalPeer();
+            signalPacket.setSrc(publicKey);
+            signalPacket.setDst(activeCall);
+            signalPacket.setSignalType(SignalType.KEY_EXCHANGE);
+            signalPacket.setSharedPublic(Buffer.from(keys.publicKey).toString('hex'));
+            send(signalPacket);            
+            const computedSharedSecret = nacl.box.before(Buffer.from(sharedPublic, 'hex'), keys.secretKey);
             sharedSecretRef.current = Buffer.from(computedSharedSecret).toString('hex');
             info("Generated shared secret for call session: " + sharedSecretRef.current);
             setCallState(CallState.WEB_RTC_EXCHANGE);