Real Time Text Receiver

This program is able to receive chat message in real time on port 5060.

This program is able to receive chat message in real time on port 5060.

Use realtimetext_sender to generate chat message usage: ./realtimetext_receiver

/*
* Copyright (c) 2010-2022 Belledonne Communications SARL.
*
* This file is part of Liblinphone
* (see https://gitlab.linphone.org/BC/public/liblinphone).
*
* 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/>.
*/
#include "linphone/core.h"
#include <signal.h>
static bool_t running = TRUE;
static void stop(int signum) {
running = FALSE;
}
int main(int argc, char *argv[]) {
LinphoneCoreVTable vtable = {0};
LinphoneCore *lc;
LinphoneCall *call = NULL;
LinphoneChatRoom *chat_room;
LinphoneChatMessage *chat_message = NULL;
const char *dest = NULL;
LCSipTransports tp;
tp.udp_port = LC_SIP_TRANSPORT_RANDOM;
tp.tcp_port = LC_SIP_TRANSPORT_RANDOM;
tp.tls_port = LC_SIP_TRANSPORT_RANDOM;
/* take the destination sip uri from the command line arguments */
if (argc > 1) {
dest = argv[1];
}
signal(SIGINT, stop);
#ifdef DEBUG_LOGS
linphone_core_enable_logs(NULL); /*enable liblinphone logs.*/
#endif
/*
Instanciate a LinphoneCore object given the LinphoneCoreVTable
*/
lc = linphone_core_new(&vtable, NULL, NULL, NULL);
linphone_core_set_sip_transports(lc, &tp); /*to avoid port colliding with receiver*/
if (dest) {
/*
Place an outgoing call with rtt enabled
*/
LinphoneCallParams *cp = linphone_core_create_call_params(lc, NULL);
linphone_call_params_enable_realtime_text(cp, TRUE); /*enable real time text*/
call = linphone_core_invite_with_params(lc, dest, cp);
linphone_call_params_unref(cp);
if (call == NULL) {
printf("Could not place call to %s\n", dest);
goto end;
} else printf("Call to %s is in progress...", dest);
linphone_call_ref(call);
}
/*wait for call to be established*/
while (running && (linphone_call_get_state(call) == LinphoneCallOutgoingProgress ||
linphone_call_get_state(call) == LinphoneCallOutgoingInit)) {
linphone_core_iterate(lc);
ms_usleep(50000);
}
/*check if call is established*/
switch (linphone_call_get_state(call)) {
case LinphoneCallError:
case LinphoneCallReleased:
case LinphoneCallEnd:
printf("Could not place call to %s\n", dest);
goto end;
break;
default:
break;
/*continue*/
}
chat_room = linphone_call_get_chat_room(call); /*create a chat room associated to this call*/
/* main loop for sending message and doing background linphonecore work: */
while (running) {
int character;
/*to disable terminal buffering*/
if (system("/bin/stty raw") == -1) {
ms_error("/bin/stty error");
}
character = getchar();
if (system("/bin/stty cooked") == -1) {
ms_error("/bin/stty error");
}
if (character == 0x03) { /*CTRL C*/
running = 0;
break;
}
if (character != EOF) {
/* user has typed something*/
if (chat_message == NULL) {
/*create a new message*/
chat_message = linphone_chat_room_create_message(chat_room, ""); /*create an empty message*/
}
if (character == '\r') {
/*new line, committing message*/
linphone_chat_room_send_chat_message(chat_room, chat_message);
chat_message = NULL; /*reset message*/
} else {
linphone_chat_message_put_char(chat_message, character); /*send char in realtime*/
}
}
linphone_core_iterate(lc);
ms_usleep(50000);
}
if (call && linphone_call_get_state(call) != LinphoneCallEnd) {
/* terminate the call */
printf("Terminating the call...\n");
linphone_core_terminate_call(lc, call);
/*at this stage we don't need the call object */
linphone_call_unref(call);
}
end:
printf("Shutting down...\n");
linphone_core_destroy(lc);
printf("Exited\n");
return 0;
}
linphone_core_invite_with_params
LinphoneCall * linphone_core_invite_with_params(LinphoneCore *core, const char *url, const LinphoneCallParams *params)
Initiates an outgoing call according to supplied call parameters The application doesn't own a refere...
linphone_core_terminate_call
MS2_DEPRECATED LinphoneStatus linphone_core_terminate_call(LinphoneCore *core, LinphoneCall *call)
Terminates a call.
linphone_core_create_call_params
LinphoneCallParams * linphone_core_create_call_params(LinphoneCore *core, LinphoneCall *call)
Create a LinphoneCallParams suitable for linphone_core_invite_with_params(), linphone_core_accept_cal...
linphone_call_params_unref
void linphone_call_params_unref(LinphoneCallParams *call_params)
Release a reference to the call params.
linphone_call_get_state
LinphoneCallState linphone_call_get_state(const LinphoneCall *call)
Retrieves the call's current state.
LinphoneCallParams
struct _LinphoneCallParams LinphoneCallParams
An object containing various parameters of a LinphoneCall.
Definition c-types.h:299
LinphoneCall
struct _LinphoneCall LinphoneCall
This object represents a call issued or received by the LinphoneCore.
Definition c-types.h:267
linphone_call_ref
LinphoneCall * linphone_call_ref(LinphoneCall *call)
Acquire a reference to the call.
linphone_call_unref
void linphone_call_unref(LinphoneCall *call)
Release reference to the call.
linphone_call_get_chat_room
LinphoneChatRoom * linphone_call_get_chat_room(LinphoneCall *call)
Create a new chat room for real time messaging from a call if not already existing,...
linphone_chat_message_put_char
LinphoneStatus linphone_chat_message_put_char(LinphoneChatMessage *message, uint32_t character)
Fulfill a chat message char by char.
LinphoneChatRoom
struct _LinphoneChatRoom LinphoneChatRoom
A chat room is the place where LinphoneChatMessage are exchanged.
Definition c-types.h:423
linphone_chat_room_create_message
MS2_DEPRECATED LinphoneChatMessage * linphone_chat_room_create_message(LinphoneChatRoom *chat_room, const char *message)
Creates a message attached to the given chat room with a plain text content filled with the given mes...
LinphoneChatMessage
struct _LinphoneChatMessage LinphoneChatMessage
An chat message is the object that is sent or received through a LinphoneChatRoom.
Definition c-types.h:384
linphone_chat_room_send_chat_message
MS2_DEPRECATED void linphone_chat_room_send_chat_message(LinphoneChatRoom *chat_room, LinphoneChatMessage *message)
Send a message to peer member of this chat room.
linphone_core_iterate
void linphone_core_iterate(LinphoneCore *core)
Main loop function.
linphone_core_new
MS2_DEPRECATED LinphoneCore * linphone_core_new(const LinphoneCoreVTable *vtable, const char *config_path, const char *factory_config_path, void *userdata)
Instanciates a LinphoneCore object.
LinphoneCore
struct _LinphoneCore LinphoneCore
Main object to instanciate and on which to keep a reference.
Definition types.h:495
linphone_core_destroy
MS2_DEPRECATED void linphone_core_destroy(LinphoneCore *core)
Destroys a LinphoneCore.
LC_SIP_TRANSPORT_RANDOM
#define LC_SIP_TRANSPORT_RANDOM
Randomly chose a sip port for this transport Use with LinphoneSipTransports.
Definition misc.h:48
linphone_call_params_enable_realtime_text
LinphoneStatus linphone_call_params_enable_realtime_text(LinphoneCallParams *params, bool_t yesno)
Use to enable real time text following rfc4103.
linphone_core_set_sip_transports
MS2_DEPRECATED LinphoneStatus linphone_core_set_sip_transports(LinphoneCore *core, const LinphoneSipTransports *transports)
Sets the ports to be used for each of transport (UDP or TCP) A zero value port for a given transport ...
_LinphoneCoreVTable
This structure holds all callbacks that the application should implement.
Definition core.h:217