fix how to send multiârt notify

coreapi/linphonecore.c

@@ -51,6 +51,8 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 #include "chat/chat-room/client-group-chat-room-p.h"
 #include "chat/chat-room/server-group-chat-room-p.h"
 #include "conference/handlers/remote-conference-event-handler.h"
+#include "content/content-manager.h"
+#include "content/content-type.h"
 #include "core/core-p.h"
 
 // For migration purpose.
@@ -2138,11 +2140,17 @@ static void linphone_core_internal_notify_received(LinphoneCore *lc, LinphoneEve
 		));
 
 		if (chatRoom) {
-			if (linphone_content_is_multipart(body))
-				L_GET_PRIVATE(static_pointer_cast<ClientGroupChatRoom>(chatRoom))->multipartNotifyReceived(
-					linphone_content_get_string_buffer(body)
-				);
-			else
+			if (linphone_content_is_multipart(body)) {
+				// TODO : migrate to c++ 'Content'.
+				int i = 0;
+				LinphoneContent *part = NULL;
+				while ((part = linphone_content_get_part(body, i))) {
+					i++;
+					L_GET_PRIVATE(static_pointer_cast<ClientGroupChatRoom>(chatRoom))->notifyReceived(
+						linphone_content_get_string_buffer(part)
+					);
+				}
+			} else
 				L_GET_PRIVATE(static_pointer_cast<ClientGroupChatRoom>(chatRoom))->notifyReceived(
 					linphone_content_get_string_buffer(body)
 				);

src/conference/handlers/local-conference-event-handler-p.h

@@ -57,7 +57,7 @@ private:
 	std::string createNotify (Xsd::ConferenceInfo::ConferenceType confInfo, int notifyId = -1, bool isFullState = false);
 	std::string createNotifySubjectChanged (const std::string &subject, int notifyId = -1);
 	void notifyParticipant (const std::string &notify, const std::shared_ptr<Participant> &participant);
-	void notifyParticipantDevice (const std::string &notify, const std::shared_ptr<ParticipantDevice> &device);
+	void notifyParticipantDevice (const std::string &notify, const std::shared_ptr<ParticipantDevice> &device, bool multipart = false);
 
 	L_DECLARE_PUBLIC(LocalConferenceEventHandler);
 };

src/conference/handlers/local-conference-event-handler.cpp

@@ -67,11 +67,18 @@ void LocalConferenceEventHandlerPrivate::notifyParticipant (const string &notify
 		notifyParticipantDevice(notify, device);
 }
 
-void LocalConferenceEventHandlerPrivate::notifyParticipantDevice (const string &notify, const shared_ptr<ParticipantDevice> &device) {
+void LocalConferenceEventHandlerPrivate::notifyParticipantDevice (const string &notify, const shared_ptr<ParticipantDevice> &device, bool multipart) {
 	if (device->isSubscribedToConferenceEventPackage() && !notify.empty()) {
 		LinphoneEvent *ev = device->getConferenceSubscribeEvent();
 		LinphoneContent *content = linphone_core_create_content(ev->lc);
 		linphone_content_set_buffer(content, (const uint8_t *)notify.c_str(), strlen(notify.c_str()));
+		if (multipart) {
+			linphone_content_set_type(content, "multipart");
+			linphone_content_set_subtype(content, "mixed;boundary=---------------------------14737809831466499882746641449");
+		} else {
+			linphone_content_set_type(content, "application");
+			linphone_content_set_subtype(content, "conference-info");
+		}
 		linphone_event_notify(ev, content);
 		linphone_content_unref(content);
 	}
@@ -394,7 +401,7 @@ void LocalConferenceEventHandler::subscribeReceived (LinphoneEvent *lev) {
 			lInfo() << "Sending all missed notify [" << lastNotify << "-" << d->lastNotify <<
 				"] for conference:" << d->conf->getConferenceAddress().asString() <<
 				" to: " << participant->getAddress().asString();
-			d->notifyParticipantDevice(d->createNotifyMultipart(static_cast<int>(lastNotify)), device);
+			d->notifyParticipantDevice(d->createNotifyMultipart(static_cast<int>(lastNotify)), device, true);
 		} else if (lastNotify > d->lastNotify) {
 			lError() << "last notify received by client: [" << lastNotify <<"] for conference:" <<
 				d->conf->getConferenceAddress().asString() <<