4 files changed, 71 insertions, 9 deletions
diff --git a/indra/newview/llavataractions.cpp b/indra/newview/llavataractions.cpp
index 651c66d0a7..2a8c55e5db 100644
--- a/indra/newview/llavataractions.cpp
+++ b/indra/newview/llavataractions.cpp
@@ -243,7 +243,6 @@ void LLAvatarActions::startAdhocCall(const std::vector<LLUUID>& ids)
 		return;
 	}
 
-	// start the call once the session has fully initialized
 	gIMMgr->autoStartCallOnStartup(session_id);
 
 	make_ui_sound("UISndStartIM");
diff --git a/indra/newview/llgroupactions.cpp b/indra/newview/llgroupactions.cpp
index 22658b4d65..7dd8ea694e 100644
--- a/indra/newview/llgroupactions.cpp
+++ b/indra/newview/llgroupactions.cpp
@@ -138,12 +138,7 @@ void LLGroupActions::startCall(const LLUUID& group_id)
 	}
 
 	// start the call
-	// *TODO: move this to LLIMMgr?
-	LLIMModel::LLIMSession* session = LLIMModel::getInstance()->findIMSession(session_id);
-	if (session && session->mSessionInitialized)
-		gIMMgr->startCall(session_id);
-	else
-		gIMMgr->autoStartCallOnStartup(session_id);
+	gIMMgr->autoStartCallOnStartup(session_id);
 
 	make_ui_sound("UISndStartIM");
 }
diff --git a/indra/newview/llimview.cpp b/indra/newview/llimview.cpp
index 403883ad99..3549891bc5 100644
--- a/indra/newview/llimview.cpp
+++ b/indra/newview/llimview.cpp
@@ -429,6 +429,50 @@ LLIMModel::LLIMSession* LLIMModel::findIMSession(const LLUUID& session_id) const
 		(LLIMModel::LLIMSession*) NULL);
 }
 
+//*TODO consider switching to using std::set instead of std::list for holding LLUUIDs across the whole code
+LLIMModel::LLIMSession* LLIMModel::findAdHocIMSession(const std::vector<LLUUID>& ids)
+{
+	S32 num = ids.size();
+	if (!num) return NULL;
+
+	if (mId2SessionMap.empty()) return NULL;
+
+	std::map<LLUUID, LLIMSession*>::const_iterator it = mId2SessionMap.begin();
+	for (; it != mId2SessionMap.end(); ++it)
+	{
+		LLIMSession* session = (*it).second;
+	
+		if (!session->isAdHoc()) continue;
+		if (session->mInitialTargetIDs.size() != num) continue;
+
+		std::list<LLUUID> tmp_list(session->mInitialTargetIDs.begin(), session->mInitialTargetIDs.end());
+
+		std::vector<LLUUID>::const_iterator iter = ids.begin();
+		while (iter != ids.end())
+		{
+			tmp_list.remove(*iter);
+			++iter;
+			
+			if (tmp_list.empty()) 
+			{
+				break;
+			}
+		}
+
+		if (tmp_list.empty() && iter == ids.end())
+		{
+			return session;
+		}
+	}
+
+	return NULL;
+}
+
+bool LLIMModel::LLIMSession::isAdHoc()
+{
+	return IM_SESSION_CONFERENCE_START == mType || (IM_SESSION_INVITE == mType && !gAgent.isInGroup(mSessionID));
+}
+
 void LLIMModel::processSessionInitializedReply(const LLUUID& old_session_id, const LLUUID& new_session_id)
 {
 	LLIMSession* session = findIMSession(old_session_id);
@@ -2106,7 +2150,13 @@ BOOL LLIMMgr::getIMReceived() const
 void LLIMMgr::autoStartCallOnStartup(const LLUUID& session_id)
 {
 	LLIMModel::LLIMSession *session = LLIMModel::getInstance()->findIMSession(session_id);
-	if (session)
+	if (!session) return;
+	
+	if (session->mSessionInitialized)
+	{
+		startCall(session_id);
+	}
+	else
 	{
 		session->mStartCallOnInitialize = true;
 	}	
@@ -2168,12 +2218,22 @@ LLUUID LLIMMgr::addSession(
 
 	bool new_session = !LLIMModel::getInstance()->findIMSession(session_id);
 
+	//works only for outgoing ad-hoc sessions
+	if (new_session && IM_SESSION_CONFERENCE_START == dialog && ids.size())
+	{
+		LLIMModel::LLIMSession* ad_hoc_found = LLIMModel::getInstance()->findAdHocIMSession(ids);
+		if (ad_hoc_found)
+		{
+			new_session = false;
+			session_id = ad_hoc_found->mSessionID;
+		}
+	}
+
 	if (new_session)
 	{
 		LLIMModel::getInstance()->newSession(session_id, name, dialog, other_participant_id, ids, voice);
 	}
 
-
 	//*TODO remove this "floater" thing when Communicate Floater's gone
 	LLFloaterIMPanel* floater = findFloaterBySession(session_id);
 	if(!floater)
diff --git a/indra/newview/llimview.h b/indra/newview/llimview.h
index 909fdaa37f..3f46b0d754 100644
--- a/indra/newview/llimview.h
+++ b/indra/newview/llimview.h
@@ -74,6 +74,8 @@ public:
 		void onVoiceChannelStateChanged(const LLVoiceChannel::EState& old_state, const LLVoiceChannel::EState& new_state, const LLVoiceChannel::EDirection& direction);
 		static void chatFromLogFile(LLLogChat::ELogLineType type, const LLSD& msg, void* userdata);
 
+		bool isAdHoc();
+
 		LLUUID mSessionID;
 		std::string mName;
 		EInstantMessage mType;
@@ -133,6 +135,12 @@ public:
 	 */
 	LLIMSession* findIMSession(const LLUUID& session_id) const;
 
+	/** 
+	 * Find an Ad-Hoc IM Session with specified participants
+	 * @return first found Ad-Hoc session or NULL if the session does not exist
+	 */
+	LLIMSession* findAdHocIMSession(const std::vector<LLUUID>& ids);
+
 	/**
 	 * Rebind session data to a new session id.
 	 */