add PIClientServer::Config, common configuration type for both sides, stream packer and encryption settings

libs/main/client_server/piclientserver_server.h

@@ -25,6 +25,7 @@
 #ifndef piclientserver_server_H
 #define piclientserver_server_H
 
+#include "piclientserver_config.h"
 #include "pimutex.h"
 #include "pinetworkaddress.h"
 #include "pip_client_server_export.h"
@@ -55,7 +56,7 @@ public:
 
 	void setClientFactory(std::function<ServerClient *()> f) { client_factory = f; }
 
-	void enableSymmetricEncryption(const PIByteArray & key);
+	Config & configuration() { return config; }
 
 private:
 	void stopServer();
@@ -67,7 +68,7 @@ private:
 	PIEthernet * tcp_server     = nullptr;
 	PIThread * clean_thread     = nullptr;
 	PIThreadNotifier clean_notifier;
-	PIByteArray crypt_key;
+	Config config;
 	PIVector<ServerClient *> clients;
 	mutable PIMutex clients_mutex;