Use context for network functions.

unix/unix.h

@@ -0,0 +1,26 @@
+/*
+ * This file is part of the DiscImageChef Remote Server.
+ * Copyright (c) 2019 Natalia Portillo.
+ *
+ * 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, version 3.
+ *
+ * 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/>.
+ */
+
+#ifndef DICREMOTE_UNIX_UNIX_H_
+#define DICREMOTE_UNIX_UNIX_H_
+
+typedef struct
+{
+    int fd;
+} UnixNetworkContext;
+
+#endif // DICREMOTE_UNIX_UNIX_H_