asterisk/IMS_ConnectionHandler.ttcn

/* Component implementing a IMS server towards Asterisk's IMS UE
 * (C) 2024 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
 * Author: Pau Espin Pedrol <pespin@sysmocom.de>
 * 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
 */
module IMS_ConnectionHandler {

import from TCCOpenSecurity_Functions all;
import from General_Types all;
import from Osmocom_Types all;
import from Native_Functions all;
import from Misc_Helpers all;

import from SDP_Types all;
import from SDP_Templates all;

import from SIP_Emulation all;
import from SIPmsg_Types all;
import from SIP_Templates all;

type port IMSCoord_PT message
{
	inout charstring;
} with { extension "internal" };

const charstring IMS_COORD_CMD_REGISTERED := "COORD_CMD_REGISTERED";

type component IMS_ConnHdlr extends SIP_ConnHdlr {
	var charstring g_name;
	var IMS_ConnHdlrPars g_pars;
	timer g_Tguard;
	var PDU_SIP_Request g_rx_sip_req;
	var PDU_SIP_Response g_rx_sip_resp;

	port IMSCoord_PT COORD;
}
type record of IMS_ConnHdlr IMS_ConnHdlrList;

type record IMS_ConnHdlrPars {
	float t_guard,
	charstring remote_sip_host,
	uint16_t remote_sip_port,
	charstring user,
	charstring display_name,
	charstring password,
	SipUrl registrar_sip_req_uri,
	SipAddr registrar_sip_record,
	CallidString registrar_sip_call_id,
	integer registrar_sip_seq_nr,
	Via local_via,
	SipUrl local_sip_url_ext,
	SipAddr local_sip_record,
	Contact local_contact,
	IMS_CallPars cp optional
}
type record of IMS_ConnHdlrPars IMS_ConnHdlrParsList;

type record IMS_CallParsMT {
	/* Whether to wait for COORD.receive(COORD_CMD_PICKUP) before accepting the call. */
	boolean wait_coord_cmd_pickup,
	/* Whether to expect CANCEL instead of ACK as answer to our OK */
	boolean exp_cancel
}

type record IMS_CallPars {
	SipAddr calling optional,
	SipAddr called optional,

	SipAddr from_addr optional,
	SipAddr to_addr optional,

	CallidString sip_call_id,
	integer sip_seq_nr,
	charstring sip_body optional,

	charstring local_rtp_addr,
	uint16_t local_rtp_port,

	SDP_Message peer_sdp optional,
	IMS_CallParsMT mt
}

}