shared transient addresses

libi2pd_client/ClientContext.cpp

@@ -253,7 +253,8 @@ namespace client
 	bool ClientContext::LoadPrivateKeys (i2p::data::PrivateKeys& keys, const std::string& filename,
 		i2p::data::SigningKeyType sigType, i2p::data::CryptoKeyType cryptoType)
 	{
-		if (filename == "transient")
+		static const std::string transient("transient");
+		if (!filename.compare (0, transient.length (), transient)) // starts with transient
 		{
 			keys = i2p::data::PrivateKeys::CreateRandomKeys (sigType, cryptoType);
 			LogPrint (eLogInfo, "Clients: New transient keys address ", m_AddressBook.ToAddress(keys.GetPublic ()->GetIdentHash ()), " created");
@@ -533,6 +534,7 @@ namespace client
 			return;
 		}
 
+		std::map<std::string, std::shared_ptr<ClientDestination> > destinations; // keys -> destination
 		for (auto& section: pt)
 		{
 			std::string name = section.first;
@@ -563,6 +565,11 @@ namespace client
 
 					std::shared_ptr<ClientDestination> localDestination = nullptr;
 					if (keys.length () > 0)
+					{
+						auto it = destinations.find (keys);
+						if (it != destinations.end ())
+							localDestination = it->second;
+						else
 						{	
 							i2p::data::PrivateKeys k;
 							if(LoadPrivateKeys (k, keys, sigType, cryptoType))
@@ -574,6 +581,8 @@ namespace client
 										localDestination = CreateNewMatchedTunnelDestination(k, dest, &options);
 									else
 										localDestination = CreateNewLocalDestination (k, type == I2P_TUNNELS_SECTION_TYPE_UDPCLIENT, &options);
+									destinations[keys] = localDestination;
+								}
 							}
 						}	
 					}
@@ -679,12 +688,21 @@ namespace client
 					ReadI2CPOptions (section, options);
 
 					std::shared_ptr<ClientDestination> localDestination = nullptr;
+					auto it = destinations.find (keys);
+					if (it != destinations.end ())
+						localDestination = it->second;
+					else
+					{	
 						i2p::data::PrivateKeys k;
 						if(!LoadPrivateKeys (k, keys, sigType, cryptoType))
 							continue;
 						localDestination = FindLocalDestination (k.GetPublic ()->GetIdentHash ());
 						if (!localDestination)
+						{	
 							localDestination = CreateNewLocalDestination (k, true, &options);
+							destinations[keys] = localDestination;
+						}	
+					}	
 					if (type == I2P_TUNNELS_SECTION_TYPE_UDPSERVER)
 					{
 						// udp server tunnel