failed approach

gomspace/libgscsp/lib/libcsp/src/csp_port.h

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+/*
+Cubesat Space Protocol - A small network-layer protocol designed for Cubesats
+Copyright (C) 2012 GomSpace ApS (http://www.gomspace.com)
+Copyright (C) 2012 AAUSAT3 Project (http://aausat3.space.aau.dk) 
+
+This library 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 2.1 of the License, or (at your option) any later version.
+
+This library 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 library; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#ifndef _CSP_PORT_H_
+#define _CSP_PORT_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+
+#include <csp/csp.h>
+
+/** @brief Port states */
+typedef enum {
+	PORT_CLOSED = 0,
+	PORT_OPEN = 1,
+} csp_port_state_t;
+
+/** @brief Port struct */
+typedef struct {
+	csp_port_state_t state;		 // Port state
+	csp_socket_t * socket;		  // New connections are added to this socket's conn queue
+} csp_port_t;
+
+/**
+ * Init ports array
+ */
+int csp_port_init(void);
+
+csp_socket_t * csp_port_get_socket(unsigned int dport);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif // _CSP_PORT_H_