library/SGsAP_CodecPort.ttcn

module SGsAP_CodecPort {

/* Simple SGsAP Codec Port, translating between raw SCTP primitives with
 * octetstring payload towards the IPL4asp provider, and SGsAP primitives
 * which carry the decoded SGsAP data types as payload.
 *
 * (C) 2018 by Harald Welte <laforge@gnumonks.org>
 * All rights reserved.
 *
 * Released under the terms of GNU General Public License, Version 2 or
 * (at your option) any later version.
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 */

	import from IPL4asp_PortType all;
	import from IPL4asp_Types all;
	import from SGsAP_Types all;

	type record SGsAP_RecvFrom {
		ConnectionId	connId,
		HostName	remName,
		PortNumber	remPort,
		HostName	locName,
		PortNumber	locPort,
		PDU_SGsAP	msg
	};

	template SGsAP_RecvFrom t_SGsAP_RecvFrom(template PDU_SGsAP msg) := {
		connId := ?,
		remName := ?,
		remPort := ?,
		locName := ?,
		locPort := ?,
		msg := msg
	}

	type record SGsAP_Send {
		ConnectionId	connId,
		PDU_SGsAP	msg
	}

	template SGsAP_Send t_SGsAP_Send(template ConnectionId connId, template PDU_SGsAP msg) := {
		connId := connId,
		msg := msg
	}

	private function IPL4_to_SGsAP_RecvFrom(in ASP_RecvFrom pin, out SGsAP_RecvFrom pout) {
		pout.connId := pin.connId;
		pout.remName := pin.remName;
		pout.remPort := pin.remPort;
		pout.locName := pin.locName;
		pout.locPort := pin.locPort;
		pout.msg := dec_PDU_SGsAP(pin.msg);
	} with { extension "prototype(fast)" };

	private function SGsAP_to_IPL4_Send(in SGsAP_Send pin, out ASP_Send pout) {
		pout.connId := pin.connId;
		pout.proto := { sctp := {} };
		pout.msg := enc_PDU_SGsAP(pin.msg);
	} with { extension "prototype(fast)" };

	type port SGsAP_CODEC_PT message {
		out	SGsAP_Send;
		in	SGsAP_RecvFrom,
			ASP_ConnId_ReadyToRelease,
			ASP_Event;
	} with { extension "user IPL4asp_PT
		out(SGsAP_Send -> ASP_Send:function(SGsAP_to_IPL4_Send))
		in(ASP_RecvFrom -> SGsAP_RecvFrom: function(IPL4_to_SGsAP_RecvFrom);
		   ASP_ConnId_ReadyToRelease -> ASP_ConnId_ReadyToRelease: simple;
		   ASP_Event -> ASP_Event: simple)"
	}
}