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

libs/main/client_server/piclientserver_config.h

@@ -0,0 +1,60 @@
+/*! \file piclientserver_config.h
+ * \ingroup ClientServer
+ * \~\brief
+ * \~english
+ * \~russian
+ */
+/*
+    PIP - Platform Independent Primitives
+	Ivan Pelipenko peri4ko@yandex.ru
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef piclientserver_config_H
+#define piclientserver_config_H
+
+#include "pibytearray.h"
+#include "pip_client_server_export.h"
+
+
+namespace PIClientServer {
+
+class Server;
+class Client;
+class ClientBase;
+
+class PIP_CLIENT_SERVER_EXPORT Config {
+	friend class Server;
+	friend class Client;
+
+public:
+	void setPacketSign(ushort sign);
+	void setPacketSize(int bytes);
+
+	void enableSymmetricEncryption(const PIByteArray & key);
+
+protected:
+	void apply(ClientBase * client);
+
+	PIByteArray crypt_key;
+	ushort packet_sign = 0xAFBE;
+	int packet_size    = 1400;
+
+private:
+};
+
+} // namespace PIClientServer
+
+#endif