add client/server (not tested yet)

client.h

@@ -0,0 +1,33 @@
+/*
+ * This file is part of the CCD_Capture project.
+ * Copyright 2022 Edward V. Emelianov <edward.emelianoff@gmail.com>.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+#ifndef CLIENT_H__
+#define CLIENT_H__
+
+// waiting for answer timeout
+#define ANSWER_TIMEOUT  1.0
+// wait for exposition ends (between subsequent check calls)
+#define WAIT_TIMEOUT    2.0
+// client will disconnect after this time from last server message
+#define CLIENT_TIMEOUT  10.0
+
+// client-side functions
+void client(int fd);
+
+#endif // CLIENT_H__