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/* (C) 2017 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
* All Rights Reserved
*
* Author: Philipp Maier
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#pragma once
#include <osmocom/mgcp_client/mgcp_client.h>
#include <osmocom/msc/gsm_data.h>
struct ran_conn;
/* MGCP state handler context. This context information stores all information
* to handle the direction of the RTP streams via MGCP. There is one instance
* of this context struct per RAN connection.
* (see also struct ran_conn) */
struct mgcp_ctx {
/* FSM instance, which handles the connection switching procedure */
struct osmo_fsm_inst *fsm;
/* RTP endpoint string. This string identifies the endpoint
* on the MGW on which the RAN and CN connection is created. This
* endpoint number is assigned by the MGW. */
char rtp_endpoint[MGCP_ENDPOINT_MAXLEN];
/* Call id of the current call. Will be derived from the callref
* of the transaction that is valid during the first CRCX. (The
* callref may change throughout the call) */
unsigned int call_id;
/* Set to true, when the context information is no longer needed */
bool free_ctx;
/* RTP connection identifiers */
char conn_id_ran[MGCP_CONN_ID_LENGTH];
char conn_id_cn[MGCP_CONN_ID_LENGTH];
/* Copy of the pointer and the data with context information
* needed to process the AoIP and MGCP requests (system data) */
struct mgcp_client *mgcp;
struct gsm_trans *trans;
mgcp_trans_id_t mgw_pending_trans;
};
int msc_mgcp_try_call_assignment(struct gsm_trans *trans);
int msc_mgcp_call_assignment(struct gsm_trans *trans);
int msc_mgcp_ass_complete(struct ran_conn *conn, uint16_t port, char *addr);
int msc_mgcp_ass_fail(struct ran_conn *conn);
int msc_mgcp_call_complete(struct gsm_trans *trans, uint16_t port, char *addr);
int msc_mgcp_call_release(struct gsm_trans *trans);
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