diff --git a/common/CMakeLists.txt b/common/CMakeLists.txt
index afdd8588..992c24e2 100644
--- a/common/CMakeLists.txt
+++ b/common/CMakeLists.txt
@@ -8,13 +8,16 @@ SET(common_SOURCES
 	rng_qt.cpp
 	rng_sfmt.cpp
 	server.cpp
+	server_abstractuserinterface.cpp
 	server_card.cpp
 	server_cardzone.cpp
 	server_game.cpp
 	server_player.cpp
 	server_protocolhandler.cpp
+	server_remoteuserinterface.cpp
 	server_response_containers.cpp
 	server_room.cpp
+	serverinfo_user_container.cpp
 	sfmt/SFMT.c
 )
 SET(common_HEADERS
diff --git a/common/pb/serverinfo_user.proto b/common/pb/serverinfo_user.proto
index b24f7e55..2dcc58bb 100644
--- a/common/pb/serverinfo_user.proto
+++ b/common/pb/serverinfo_user.proto
@@ -19,4 +19,5 @@ message ServerInfo_User {
 	optional string country = 6;
 	optional bytes avatar_bmp = 7;
 	optional sint32 id = 8 [default = -1];
+	optional sint32 server_id = 9 [default = -1];
 }
diff --git a/common/server.cpp b/common/server.cpp
index 090e0344..bcb41734 100644
--- a/common/server.cpp
+++ b/common/server.cpp
@@ -22,6 +22,7 @@
 #include "server_counter.h"
 #include "server_room.h"
 #include "server_protocolhandler.h"
+#include "server_remoteuserinterface.h"
 #include "pb/event_user_joined.pb.h"
 #include "pb/event_user_left.pb.h"
 #include "pb/event_list_rooms.pb.h"
@@ -100,7 +101,7 @@ AuthenticationResult Server::loginUser(Server_ProtocolHandler *session, QString
 	for (int i = 0; i < clients.size(); ++i)
 		if (clients[i]->getAcceptsUserListChanges())
 			clients[i]->sendProtocolItem(*se);
-	serverMutex.unlock();
+	locker.unlock();
 	
 	sendIslMessage(*se);
 	delete se;
@@ -139,6 +140,36 @@ void Server::removeClient(Server_ProtocolHandler *client)
 	qDebug() << "Server::removeClient:" << clients.size() << "clients; " << users.size() << "users left";
 }
 
+void Server::externalUserJoined(ServerInfo_User userInfo)
+{
+	// This function is always called from the main thread via signal/slot.
+	QMutexLocker locker(&serverMutex);
+	
+	externalUsers.insert(QString::fromStdString(userInfo.name()), new Server_RemoteUserInterface(this, ServerInfo_User_Container(userInfo)));
+	
+	Event_UserJoined event;
+	event.mutable_user_info()->CopyFrom(userInfo);
+	SessionEvent *se = Server_ProtocolHandler::prepareSessionEvent(event);
+	for (int i = 0; i < clients.size(); ++i)
+		if (clients[i]->getAcceptsUserListChanges())
+			clients[i]->sendProtocolItem(*se);
+}
+
+void Server::externalUserLeft(QString userName)
+{
+	// This function is always called from the main thread via signal/slot.
+	QMutexLocker locker(&serverMutex);
+	
+	delete externalUsers.take(userName);
+	
+	Event_UserLeft event;
+	event.set_name(userName.toStdString());
+	SessionEvent *se = Server_ProtocolHandler::prepareSessionEvent(event);
+	for (int i = 0; i < clients.size(); ++i)
+		if (clients[i]->getAcceptsUserListChanges())
+			clients[i]->sendProtocolItem(*se);
+}
+
 void Server::broadcastRoomUpdate()
 {
 	QMutexLocker locker(&serverMutex);
@@ -184,6 +215,15 @@ int Server::getGamesCount() const
 	return result;
 }
 
+void Server::sendIslMessage(const Response &item, int serverId)
+{
+	IslMessage msg;
+	msg.set_message_type(IslMessage::RESPONSE);
+	msg.mutable_response()->CopyFrom(item);
+	
+	doSendIslMessage(msg, serverId);
+}
+
 void Server::sendIslMessage(const SessionEvent &item, int serverId)
 {
 	IslMessage msg;
@@ -192,3 +232,21 @@ void Server::sendIslMessage(const SessionEvent &item, int serverId)
 	
 	doSendIslMessage(msg, serverId);
 }
+
+void Server::sendIslMessage(const GameEventContainer &item, int serverId)
+{
+	IslMessage msg;
+	msg.set_message_type(IslMessage::GAME_EVENT_CONTAINER);
+	msg.mutable_game_event_container()->CopyFrom(item);
+	
+	doSendIslMessage(msg, serverId);
+}
+
+void Server::sendIslMessage(const RoomEvent &item, int serverId)
+{
+	IslMessage msg;
+	msg.set_message_type(IslMessage::ROOM_EVENT);
+	msg.mutable_room_event()->CopyFrom(item);
+	
+	doSendIslMessage(msg, serverId);
+}
diff --git a/common/server.h b/common/server.h
index c9375679..b9d84288 100644
--- a/common/server.h
+++ b/common/server.h
@@ -10,9 +10,13 @@
 class Server_Game;
 class Server_Room;
 class Server_ProtocolHandler;
+class Server_AbstractUserInterface;
 class GameReplay;
 class IslMessage;
+class Response;
 class SessionEvent;
+class GameEventContainer;
+class RoomEvent;
 
 enum AuthenticationResult { NotLoggedIn = 0, PasswordRight = 1, UnknownUser = 2, WouldOverwriteOldSession = 3, UserIsBanned = 4 };
 
@@ -53,11 +57,22 @@ public:
 	
 	virtual void storeGameInformation(int secondsElapsed, const QSet<QString> &allPlayersEver, const QSet<QString> &allSpectatorsEver, const QList<GameReplay *> &replays) { }
 	
+	void sendIslMessage(const Response &item, int serverId = -1);
 	void sendIslMessage(const SessionEvent &item, int serverId = -1);
+	void sendIslMessage(const GameEventContainer &item, int serverId = -1);
+	void sendIslMessage(const RoomEvent &item, int serverId = -1);
+	
+	void addExternalUser(const ServerInfo_User &userInfo);
+	void removeExternalUser(const QString &userName);
+	const QMap<QString, Server_AbstractUserInterface *> &getExternalUsers() const { return externalUsers; }
+protected slots:	
+	void externalUserJoined(ServerInfo_User userInfo);
+	void externalUserLeft(QString userName);
 protected:
 	void prepareDestroy();
 	QList<Server_ProtocolHandler *> clients;
 	QMap<QString, Server_ProtocolHandler *> users;
+	QMap<QString, Server_AbstractUserInterface *> externalUsers;
 	QMap<int, Server_Room *> rooms;
 	
 	virtual int startSession(const QString &userName, const QString &address) { return -1; }
diff --git a/common/server_abstractuserinterface.cpp b/common/server_abstractuserinterface.cpp
new file mode 100644
index 00000000..30814950
--- /dev/null
+++ b/common/server_abstractuserinterface.cpp
@@ -0,0 +1,19 @@
+#include "server_abstractuserinterface.h"
+#include <google/protobuf/descriptor.h>
+
+void Server_AbstractUserInterface::sendProtocolItemByType(ServerMessage::MessageType type, const ::google::protobuf::Message &item)
+{
+	switch (type) {
+		case ServerMessage::RESPONSE: sendProtocolItem(static_cast<const Response &>(item)); break;
+		case ServerMessage::SESSION_EVENT: sendProtocolItem(static_cast<const SessionEvent &>(item)); break;
+		case ServerMessage::GAME_EVENT_CONTAINER: sendProtocolItem(static_cast<const GameEventContainer &>(item)); break;
+		case ServerMessage::ROOM_EVENT: sendProtocolItem(static_cast<const RoomEvent &>(item)); break;
+	}
+}
+
+SessionEvent *Server_AbstractUserInterface::prepareSessionEvent(const ::google::protobuf::Message &sessionEvent)
+{
+	SessionEvent *event = new SessionEvent;
+	event->GetReflection()->MutableMessage(event, sessionEvent.GetDescriptor()->FindExtensionByName("ext"))->CopyFrom(sessionEvent);
+	return event;
+}
diff --git a/common/server_abstractuserinterface.h b/common/server_abstractuserinterface.h
new file mode 100644
index 00000000..6c6e3e23
--- /dev/null
+++ b/common/server_abstractuserinterface.h
@@ -0,0 +1,31 @@
+#ifndef SERVER_ABSTRACTUSERINTERFACE
+#define SERVER_ABSTRACTUSERINTERFACE
+
+#include "serverinfo_user_container.h"
+#include "pb/server_message.pb.h"
+
+class Response;
+class SessionEvent;
+class GameEventContainer;
+class RoomEvent;
+
+class Server;
+
+class Server_AbstractUserInterface : public ServerInfo_User_Container {
+protected:
+	Server *server;
+public:
+	Server_AbstractUserInterface(Server *_server) : server(_server) { }
+	Server_AbstractUserInterface(Server *_server, const ServerInfo_User_Container &other) : ServerInfo_User_Container(other), server(_server) { }
+	virtual ~Server_AbstractUserInterface() { }
+	
+	virtual void sendProtocolItem(const Response &item) = 0;
+	virtual void sendProtocolItem(const SessionEvent &item) = 0;
+	virtual void sendProtocolItem(const GameEventContainer &item) = 0;
+	virtual void sendProtocolItem(const RoomEvent &item) = 0;
+	void sendProtocolItemByType(ServerMessage::MessageType type, const ::google::protobuf::Message &item);
+	
+	static SessionEvent *prepareSessionEvent(const ::google::protobuf::Message &sessionEvent);
+};
+
+#endif
diff --git a/common/server_protocolhandler.cpp b/common/server_protocolhandler.cpp
index 0c950786..f78f2ce4 100644
--- a/common/server_protocolhandler.cpp
+++ b/common/server_protocolhandler.cpp
@@ -9,6 +9,7 @@
 #include "server_game.h"
 #include "server_player.h"
 #include "decklist.h"
+#include "get_pb_extension.h"
 #include <QDateTime>
 #include "pb/serverinfo_zone.pb.h"
 #include "pb/commands.pb.h"
@@ -88,7 +89,7 @@
 #include <google/protobuf/descriptor.h>
 
 Server_ProtocolHandler::Server_ProtocolHandler(Server *_server, QObject *parent)
-	: QObject(parent), server(_server), authState(NotLoggedIn), acceptsUserListChanges(false), acceptsRoomListChanges(false), userInfo(0), sessionId(-1), timeRunning(0), lastDataReceived(0), gameListMutex(QMutex::Recursive)
+	: QObject(parent), Server_AbstractUserInterface(_server), authState(NotLoggedIn), acceptsUserListChanges(false), acceptsRoomListChanges(false), sessionId(-1), timeRunning(0), lastDataReceived(0), gameListMutex(QMutex::Recursive)
 {
 	connect(server, SIGNAL(pingClockTimeout()), this, SLOT(pingClockTimeout()));
 }
@@ -126,29 +127,6 @@ void Server_ProtocolHandler::prepareDestroy()
 		g->gameMutex.unlock();
 	}
 	gameListMutex.unlock();
-
-	delete userInfo;
-}
-
-void Server_ProtocolHandler::setUserInfo(const ServerInfo_User &_userInfo)
-{
-	userInfo = new ServerInfo_User;
-	userInfo->CopyFrom(_userInfo);
-}
-
-ServerInfo_User Server_ProtocolHandler::copyUserInfo(bool complete, bool moderatorInfo) const
-{
-	ServerInfo_User result;
-	if (userInfo) {
-		result.CopyFrom(*userInfo);
-		if (!moderatorInfo) {
-			result.clear_address();
-			result.clear_id();
-		}
-		if (!complete)
-			result.clear_avatar_bmp();
-	}
-	return result;
 }
 
 void Server_ProtocolHandler::playerRemovedFromGame(Server_Game *game)
@@ -195,37 +173,13 @@ void Server_ProtocolHandler::sendProtocolItem(const RoomEvent &item)
 	transmitProtocolItem(msg);
 }
 
-void Server_ProtocolHandler::sendProtocolItem(ServerMessage::MessageType type, const ::google::protobuf::Message &item)
-{
-	switch (type) {
-		case ServerMessage::RESPONSE: sendProtocolItem(static_cast<const Response &>(item)); break;
-		case ServerMessage::SESSION_EVENT: sendProtocolItem(static_cast<const SessionEvent &>(item)); break;
-		case ServerMessage::GAME_EVENT_CONTAINER: sendProtocolItem(static_cast<const GameEventContainer &>(item)); break;
-		case ServerMessage::ROOM_EVENT: sendProtocolItem(static_cast<const RoomEvent &>(item)); break;
-	}
-}
-
-SessionEvent *Server_ProtocolHandler::prepareSessionEvent(const ::google::protobuf::Message &sessionEvent)
-{
-	SessionEvent *event = new SessionEvent;
-	event->GetReflection()->MutableMessage(event, sessionEvent.GetDescriptor()->FindExtensionByName("ext"))->CopyFrom(sessionEvent);
-	return event;
-}
-
 Response::ResponseCode Server_ProtocolHandler::processSessionCommandContainer(const CommandContainer &cont, ResponseContainer &rc)
 {
 	Response::ResponseCode finalResponseCode = Response::RespOk;
 	for (int i = cont.session_command_size() - 1; i >= 0; --i) {
 		Response::ResponseCode resp = Response::RespInvalidCommand;
 		const SessionCommand &sc = cont.session_command(i);
-		std::vector< const ::google::protobuf::FieldDescriptor * > fieldList;
-		sc.GetReflection()->ListFields(sc, &fieldList);
-		int num = 0;
-		for (unsigned int j = 0; j < fieldList.size(); ++j)
-			if (fieldList[j]->is_extension()) {
-				num = fieldList[j]->number();
-				break;
-			}
+		const int num = getPbExtension(sc);
 		if (num != SessionCommand::PING)
 			emit logDebugMessage(QString::fromStdString(sc.ShortDebugString()), this);
 		switch ((SessionCommand::SessionCommandType) num) {
@@ -270,14 +224,7 @@ Response::ResponseCode Server_ProtocolHandler::processRoomCommandContainer(const
 	for (int i = cont.room_command_size() - 1; i >= 0; --i) {
 		Response::ResponseCode resp = Response::RespInvalidCommand;
 		const RoomCommand &sc = cont.room_command(i);
-		std::vector< const ::google::protobuf::FieldDescriptor * > fieldList;
-		sc.GetReflection()->ListFields(sc, &fieldList);
-		int num = 0;
-		for (unsigned int j = 0; j < fieldList.size(); ++j)
-			if (fieldList[j]->is_extension()) {
-				num = fieldList[j]->number();
-				break;
-			}
+		const int num = getPbExtension(sc);
 		emit logDebugMessage(QString::fromStdString(sc.ShortDebugString()), this);
 		switch ((RoomCommand::RoomCommandType) num) {
 			case RoomCommand::LEAVE_ROOM: resp = cmdLeaveRoom(sc.GetExtension(Command_LeaveRoom::ext), room, rc); break;
@@ -313,14 +260,7 @@ Response::ResponseCode Server_ProtocolHandler::processGameCommandContainer(const
 	for (int i = cont.game_command_size() - 1; i >= 0; --i) {
 		Response::ResponseCode resp = Response::RespInvalidCommand;
 		const GameCommand &sc = cont.game_command(i);
-		std::vector< const ::google::protobuf::FieldDescriptor * > fieldList;
-		sc.GetReflection()->ListFields(sc, &fieldList);
-		int num = 0;
-		for (unsigned int j = 0; j < fieldList.size(); ++j)
-			if (fieldList[j]->is_extension()) {
-				num = fieldList[j]->number();
-				break;
-			}
+		const int num = getPbExtension(sc);
 		emit logDebugMessage(QString::fromStdString(sc.ShortDebugString()), this);
 		switch ((GameCommand::GameCommandType) num) {
 			case GameCommand::KICK_FROM_GAME: resp = cmdKickFromGame(sc.GetExtension(Command_KickFromGame::ext), game, player, rc, ges); break;
@@ -372,14 +312,7 @@ Response::ResponseCode Server_ProtocolHandler::processModeratorCommandContainer(
 	for (int i = cont.moderator_command_size() - 1; i >= 0; --i) {
 		Response::ResponseCode resp = Response::RespInvalidCommand;
 		const ModeratorCommand &sc = cont.moderator_command(i);
-		std::vector< const ::google::protobuf::FieldDescriptor * > fieldList;
-		sc.GetReflection()->ListFields(sc, &fieldList);
-		int num = 0;
-		for (unsigned int j = 0; j < fieldList.size(); ++j)
-			if (fieldList[j]->is_extension()) {
-				num = fieldList[j]->number();
-				break;
-			}
+		const int num = getPbExtension(sc);
 		emit logDebugMessage(QString::fromStdString(sc.ShortDebugString()), this);
 		switch ((ModeratorCommand::ModeratorCommandType) num) {
 			case ModeratorCommand::BAN_FROM_SERVER: resp = cmdBanFromServer(sc.GetExtension(Command_BanFromServer::ext), rc); break;
@@ -401,14 +334,7 @@ Response::ResponseCode Server_ProtocolHandler::processAdminCommandContainer(cons
 	for (int i = cont.admin_command_size() - 1; i >= 0; --i) {
 		Response::ResponseCode resp = Response::RespInvalidCommand;
 		const AdminCommand &sc = cont.admin_command(i);
-		std::vector< const ::google::protobuf::FieldDescriptor * > fieldList;
-		sc.GetReflection()->ListFields(sc, &fieldList);
-		int num = 0;
-		for (unsigned int j = 0; j < fieldList.size(); ++j)
-			if (fieldList[j]->is_extension()) {
-				num = fieldList[j]->number();
-				break;
-			}
+		const int num = getPbExtension(sc);
 		emit logDebugMessage(QString::fromStdString(sc.ShortDebugString()), this);
 		switch ((AdminCommand::AdminCommandType) num) {
 			case AdminCommand::SHUTDOWN_SERVER: resp = cmdShutdownServer(sc.GetExtension(Command_ShutdownServer::ext), rc); break;
@@ -442,7 +368,7 @@ void Server_ProtocolHandler::processCommandContainer(const CommandContainer &con
 	
 	const QList<QPair<ServerMessage::MessageType, ::google::protobuf::Message *> > &preResponseQueue = responseContainer.getPreResponseQueue();
 	for (int i = 0; i < preResponseQueue.size(); ++i)
-		sendProtocolItem(preResponseQueue[i].first, *preResponseQueue[i].second);
+		sendProtocolItemByType(preResponseQueue[i].first, *preResponseQueue[i].second);
 	
 	Response response;
 	response.set_cmd_id(cont.cmd_id());
@@ -454,7 +380,7 @@ void Server_ProtocolHandler::processCommandContainer(const CommandContainer &con
 	
 	const QList<QPair<ServerMessage::MessageType, ::google::protobuf::Message *> > &postResponseQueue = responseContainer.getPostResponseQueue();
 	for (int i = 0; i < postResponseQueue.size(); ++i)
-		sendProtocolItem(postResponseQueue[i].first, *postResponseQueue[i].second);
+		sendProtocolItemByType(postResponseQueue[i].first, *postResponseQueue[i].second);
 }
 
 void Server_ProtocolHandler::pingClockTimeout()
@@ -577,11 +503,15 @@ Response::ResponseCode Server_ProtocolHandler::cmdMessage(const Command_Message
 	if (authState == NotLoggedIn)
 		return Response::RespLoginNeeded;
 	
-	server->serverMutex.lock();
+	QMutexLocker locker(&server->serverMutex);
+	
 	QString receiver = QString::fromStdString(cmd.user_name());
-	Server_ProtocolHandler *userHandler = server->getUsers().value(receiver);
-	if (!userHandler)
-		return Response::RespNameNotFound;
+	Server_AbstractUserInterface *userInterface = server->getUsers().value(receiver);
+	if (!userInterface) {
+		userInterface = server->getExternalUsers().value(receiver);
+		if (!userInterface)
+			return Response::RespNameNotFound;
+	}
 	if (server->isInIgnoreList(receiver, QString::fromStdString(userInfo->name())))
 		return Response::RespInIgnoreList;
 	
@@ -591,9 +521,8 @@ Response::ResponseCode Server_ProtocolHandler::cmdMessage(const Command_Message
 	event.set_message(cmd.message());
 	
 	SessionEvent *se = prepareSessionEvent(event);
-	userHandler->sendProtocolItem(*se);
+	userInterface->sendProtocolItem(*se);
 	rc.enqueuePreResponseItem(ServerMessage::SESSION_EVENT, se);
-	server->serverMutex.unlock();
 	
 	return Response::RespOk;
 }
@@ -634,12 +563,18 @@ Response::ResponseCode Server_ProtocolHandler::cmdGetUserInfo(const Command_GetU
 	if (userName.isEmpty())
 		re->mutable_user_info()->CopyFrom(*userInfo);
 	else {
-		server->serverMutex.lock();
-		Server_ProtocolHandler *handler = server->getUsers().value(userName);
-		if (!handler)
+		
+		QMutexLocker locker(&server->serverMutex);
+		
+		ServerInfo_User_Container *infoSource;
+		if (server->getUsers().contains(userName))
+			infoSource = server->getUsers().value(userName);
+		else if (server->getExternalUsers().contains(userName))
+			infoSource = server->getExternalUsers().value(userName);
+		else
 			return Response::RespNameNotFound;
-		re->mutable_user_info()->CopyFrom(handler->copyUserInfo(true, userInfo->user_level() & ServerInfo_User::IsModerator));
-		server->serverMutex.unlock();
+		
+		re->mutable_user_info()->CopyFrom(infoSource->copyUserInfo(true, userInfo->user_level() & ServerInfo_User::IsModerator));
 	}
 	
 	rc.setResponseExtension(re);
@@ -699,6 +634,9 @@ Response::ResponseCode Server_ProtocolHandler::cmdListUsers(const Command_ListUs
 	QMapIterator<QString, Server_ProtocolHandler *> userIterator = server->getUsers();
 	while (userIterator.hasNext())
 		re->add_user_list()->CopyFrom(userIterator.next().value()->copyUserInfo(false));
+	QMapIterator<QString, Server_AbstractUserInterface *> extIterator = server->getExternalUsers();
+	while (extIterator.hasNext())
+		re->add_user_list()->CopyFrom(extIterator.next().value()->copyUserInfo(false));
 	server->serverMutex.unlock();
 	
 	acceptsUserListChanges = true;
@@ -747,7 +685,7 @@ Response::ResponseCode Server_ProtocolHandler::cmdCreateGame(const Command_Creat
 		return Response::RespLoginNeeded;
 
 	if (server->getMaxGamesPerUser() > 0)
-		if (room->getGamesCreatedByUser(getUserName()) >= server->getMaxGamesPerUser())
+		if (room->getGamesCreatedByUser(QString::fromStdString(userInfo->name())) >= server->getMaxGamesPerUser())
 			return Response::RespContextError;
 	
 	QList<int> gameTypes;
diff --git a/common/server_protocolhandler.h b/common/server_protocolhandler.h
index 152dd455..0ea586a5 100644
--- a/common/server_protocolhandler.h
+++ b/common/server_protocolhandler.h
@@ -4,6 +4,7 @@
 #include <QObject>
 #include <QPair>
 #include "server.h"
+#include "server_abstractuserinterface.h"
 #include "pb/response.pb.h"
 #include "pb/server_message.pb.h"
 
@@ -84,25 +85,21 @@ class Command_BanFromServer;
 class Command_UpdateServerMessage;
 class Command_ShutdownServer;
 
-class Server_ProtocolHandler : public QObject {
+class Server_ProtocolHandler : public QObject, public Server_AbstractUserInterface {
 	Q_OBJECT
 protected:
-	Server *server;
 	QMap<int, QPair<Server_Game *, Server_Player *> > games;
 	QMap<int, Server_Room *> rooms;
 
-	Server *getServer() const { return server; }
 	QPair<Server_Game *, Server_Player *> getGame(int gameId) const;
 
 	AuthenticationResult authState;
 	bool acceptsUserListChanges;
 	bool acceptsRoomListChanges;
-	ServerInfo_User *userInfo;
 	
 	void prepareDestroy();
 	int sessionId;
 private:
-	QString thisUserName;
 	QList<int> messageSizeOverTime, messageCountOverTime;
 	int timeRunning, lastDataReceived;
 	QTimer *pingClock;
@@ -186,11 +183,7 @@ public:
 	
 	bool getAcceptsUserListChanges() const { return acceptsUserListChanges; }
 	bool getAcceptsRoomListChanges() const { return acceptsRoomListChanges; }
-	ServerInfo_User *getUserInfo() const { return userInfo; }
-	ServerInfo_User copyUserInfo(bool complete, bool moderatorInfo = false) const;
-	const QString &getUserName() const { return thisUserName; }
 	virtual QString getAddress() const = 0;
-	void setUserInfo(const ServerInfo_User &_userInfo);
 	int getSessionId() const { return sessionId; }
 	void setSessionId(int _sessionId) { sessionId = _sessionId; }
 
@@ -201,9 +194,6 @@ public:
 	void sendProtocolItem(const SessionEvent &item);
 	void sendProtocolItem(const GameEventContainer &item);
 	void sendProtocolItem(const RoomEvent &item);
-	void sendProtocolItem(ServerMessage::MessageType type, const ::google::protobuf::Message &item);
-	
-	static SessionEvent *prepareSessionEvent(const ::google::protobuf::Message &sessionEvent);
 };
 
 #endif
diff --git a/common/server_remoteuserinterface.cpp b/common/server_remoteuserinterface.cpp
new file mode 100644
index 00000000..b20bbbe5
--- /dev/null
+++ b/common/server_remoteuserinterface.cpp
@@ -0,0 +1,22 @@
+#include "server_remoteuserinterface.h"
+#include "server.h"
+
+void Server_RemoteUserInterface::sendProtocolItem(const Response &item)
+{
+	server->sendIslMessage(item, userInfo->server_id());
+}
+
+void Server_RemoteUserInterface::sendProtocolItem(const SessionEvent &item)
+{
+	server->sendIslMessage(item, userInfo->server_id());
+}
+
+void Server_RemoteUserInterface::sendProtocolItem(const GameEventContainer &item)
+{
+	server->sendIslMessage(item, userInfo->server_id());
+}
+
+void Server_RemoteUserInterface::sendProtocolItem(const RoomEvent &item)
+{
+	server->sendIslMessage(item, userInfo->server_id());
+}
diff --git a/common/server_remoteuserinterface.h b/common/server_remoteuserinterface.h
new file mode 100644
index 00000000..82dafdb6
--- /dev/null
+++ b/common/server_remoteuserinterface.h
@@ -0,0 +1,16 @@
+#ifndef SERVER_REMOTEUSERINTERFACE_H
+#define SERVER_REMOTEUSERINTERFACE_H
+
+#include "server_abstractuserinterface.h"
+
+class Server_RemoteUserInterface : public Server_AbstractUserInterface {
+public:
+	Server_RemoteUserInterface(Server *_server, const ServerInfo_User_Container &_userInfoContainer) : Server_AbstractUserInterface(_server, _userInfoContainer) { }
+	
+	void sendProtocolItem(const Response &item);
+	void sendProtocolItem(const SessionEvent &item);
+	void sendProtocolItem(const GameEventContainer &item);
+	void sendProtocolItem(const RoomEvent &item);
+};
+
+#endif
diff --git a/common/serverinfo_user_container.cpp b/common/serverinfo_user_container.cpp
new file mode 100644
index 00000000..6268f15a
--- /dev/null
+++ b/common/serverinfo_user_container.cpp
@@ -0,0 +1,46 @@
+#include "serverinfo_user_container.h"
+#include "pb/serverinfo_user.pb.h"
+
+ServerInfo_User_Container::ServerInfo_User_Container(ServerInfo_User *_userInfo)
+        : userInfo(_userInfo)
+{
+}
+
+ServerInfo_User_Container::ServerInfo_User_Container(const ServerInfo_User &_userInfo)
+	: userInfo(new ServerInfo_User(_userInfo))
+{
+}
+
+ServerInfo_User_Container::ServerInfo_User_Container(const ServerInfo_User_Container &other)
+{
+	if (other.userInfo)
+		userInfo = new ServerInfo_User(*other.userInfo);
+	else
+		userInfo = 0;
+}
+
+ServerInfo_User_Container::~ServerInfo_User_Container()
+{
+	delete userInfo;
+}
+
+void ServerInfo_User_Container::setUserInfo(const ServerInfo_User &_userInfo)
+{
+	userInfo = new ServerInfo_User;
+	userInfo->CopyFrom(_userInfo);
+}
+
+ServerInfo_User ServerInfo_User_Container::copyUserInfo(bool complete, bool moderatorInfo) const
+{
+	ServerInfo_User result;
+	if (userInfo) {
+		result.CopyFrom(*userInfo);
+		if (!moderatorInfo) {
+			result.clear_address();
+			result.clear_id();
+		}
+		if (!complete)
+			result.clear_avatar_bmp();
+	}
+	return result;
+}
diff --git a/common/serverinfo_user_container.h b/common/serverinfo_user_container.h
new file mode 100644
index 00000000..1786bd4d
--- /dev/null
+++ b/common/serverinfo_user_container.h
@@ -0,0 +1,19 @@
+#ifndef SERVERINFO_USER_CONTAINER
+#define SERVERINFO_USER_CONTAINER
+
+class ServerInfo_User;
+
+class ServerInfo_User_Container {
+protected:
+	ServerInfo_User *userInfo;
+public:
+	ServerInfo_User_Container(ServerInfo_User *_userInfo = 0);
+	ServerInfo_User_Container(const ServerInfo_User &_userInfo);
+	ServerInfo_User_Container(const ServerInfo_User_Container &other);
+	virtual ~ServerInfo_User_Container();
+	ServerInfo_User *getUserInfo() const { return userInfo; }
+	void setUserInfo(const ServerInfo_User &_userInfo);
+	ServerInfo_User copyUserInfo(bool complete, bool moderatorInfo = false) const;
+};
+
+#endif
diff --git a/servatrice/src/isl_interface.cpp b/servatrice/src/isl_interface.cpp
index b667867d..c4aa1a92 100644
--- a/servatrice/src/isl_interface.cpp
+++ b/servatrice/src/isl_interface.cpp
@@ -5,8 +5,12 @@
 #include "server_protocolhandler.h"
 #include "server_room.h"
 
+#include "get_pb_extension.h"
 #include "pb/isl_message.pb.h"
 #include "pb/event_server_complete_list.pb.h"
+#include "pb/event_user_message.pb.h"
+#include "pb/event_user_joined.pb.h"
+#include "pb/event_user_left.pb.h"
 #include <google/protobuf/descriptor.h>
 
 void IslInterface::sharedCtor(const QSslCertificate &cert, const QSslKey &privateKey)
@@ -37,6 +41,19 @@ IslInterface::~IslInterface()
 	logger->logMessage("[ISL] session ended", this);
 	
 	flushOutputBuffer();
+	
+	QStringList usersToDelete;
+	server->serverMutex.lock();
+	QMapIterator<QString, Server_AbstractUserInterface *> extUsers = server->getExternalUsers();
+	while (extUsers.hasNext()) {
+		extUsers.next();
+		if (extUsers.value()->getUserInfo()->server_id() == serverId)
+			usersToDelete.append(extUsers.key());
+	}
+	server->serverMutex.unlock();
+	
+	for (int i = 0; i < usersToDelete.size(); ++i)
+		emit externalUserLeft(usersToDelete[i]);
 }
 
 void IslInterface::initServer()
@@ -218,7 +235,63 @@ void IslInterface::transmitMessage(const IslMessage &item)
 	emit outputBufferChanged();
 }
 
+void IslInterface::sessionEvent_ServerCompleteList(const Event_ServerCompleteList &event)
+{
+	for (int i = 0; i < event.user_list_size(); ++i) {
+		ServerInfo_User temp(event.user_list(i));
+		temp.set_server_id(serverId);
+		emit externalUserJoined(temp);
+	}
+}
+
+void IslInterface::sessionEvent_UserMessage(const SessionEvent &sessionEvent, const Event_UserMessage &event)
+{
+	QMutexLocker locker(&server->serverMutex);
+	
+	Server_ProtocolHandler *userInterface = server->getUsers().value(QString::fromStdString(event.receiver_name()));
+	if (userInterface)
+		userInterface->sendProtocolItem(sessionEvent);
+}
+
+void IslInterface::sessionEvent_UserJoined(const Event_UserJoined &event)
+{
+	emit externalUserJoined(event.user_info());
+}
+
+void IslInterface::sessionEvent_UserLeft(const Event_UserLeft &event)
+{
+	emit externalUserLeft(QString::fromStdString(event.name()));
+}
+
+void IslInterface::processSessionEvent(const SessionEvent &event)
+{
+	switch (getPbExtension(event)) {
+		case SessionEvent::SERVER_COMPLETE_LIST: sessionEvent_ServerCompleteList(event.GetExtension(Event_ServerCompleteList::ext)); break;
+		case SessionEvent::USER_MESSAGE: sessionEvent_UserMessage(event, event.GetExtension(Event_UserMessage::ext)); break;
+		case SessionEvent::USER_JOINED: sessionEvent_UserJoined(event.GetExtension(Event_UserJoined::ext)); break;
+		case SessionEvent::USER_LEFT: sessionEvent_UserLeft(event.GetExtension(Event_UserLeft::ext)); break;
+		default: ;
+	}
+}
+
 void IslInterface::processMessage(const IslMessage &item)
 {
 	qDebug() << QString::fromStdString(item.DebugString());
+	
+	switch (item.message_type()) {
+		case IslMessage::SESSION_EVENT: processSessionEvent(item.session_event()); break;
+		case IslMessage::RESPONSE: {
+			break;
+		}
+		case IslMessage::GAME_COMMAND_CONTAINER: {
+			break;
+		}
+		case IslMessage::GAME_EVENT_CONTAINER: {
+			break;
+		}
+		case IslMessage::ROOM_EVENT: {
+			break;
+		}
+		default: ;
+	}
 }
diff --git a/servatrice/src/isl_interface.h b/servatrice/src/isl_interface.h
index a59377b3..47508565 100644
--- a/servatrice/src/isl_interface.h
+++ b/servatrice/src/isl_interface.h
@@ -4,12 +4,18 @@
 #include "servatrice.h"
 #include <QSslCertificate>
 #include <QWaitCondition>
+#include "pb/serverinfo_user.pb.h"
 
 class Servatrice;
 class QSslSocket;
 class QSslKey;
 class IslMessage;
 
+class Event_ServerCompleteList;
+class Event_UserMessage;
+class Event_UserJoined;
+class Event_UserLeft;
+
 class IslInterface : public QObject {
 	Q_OBJECT
 private slots:
@@ -18,6 +24,9 @@ private slots:
 	void flushOutputBuffer();
 signals:
 	void outputBufferChanged();
+	
+	void externalUserJoined(ServerInfo_User userInfo);
+	void externalUserLeft(QString name);
 private:
 	int serverId;
 	int socketDescriptor;
@@ -33,6 +42,13 @@ private:
 	bool messageInProgress;
 	int messageLength;
 	
+	void sessionEvent_ServerCompleteList(const Event_ServerCompleteList &event);
+	void sessionEvent_UserMessage(const SessionEvent &sessionEvent, const Event_UserMessage &event);
+	void sessionEvent_UserJoined(const Event_UserJoined &event);
+	void sessionEvent_UserLeft(const Event_UserLeft &event);
+	
+	void processSessionEvent(const SessionEvent &event);
+	
 	void processMessage(const IslMessage &item);
 	void sharedCtor(const QSslCertificate &cert, const QSslKey &privateKey);
 public slots:
diff --git a/servatrice/src/servatrice.cpp b/servatrice/src/servatrice.cpp
index 687e9221..be0c5eee 100644
--- a/servatrice/src/servatrice.cpp
+++ b/servatrice/src/servatrice.cpp
@@ -64,6 +64,8 @@ void Servatrice_IslServer::incomingConnection(int socketDescriptor)
 Servatrice::Servatrice(QSettings *_settings, QObject *parent)
 	: Server(parent), dbMutex(QMutex::Recursive), settings(_settings), uptime(0), shutdownTimer(0)
 {
+	qRegisterMetaType<ServerInfo_User>("ServerInfo_User");
+	
 	serverName = settings->value("server/name").toString();
 	serverId = settings->value("server/id", 0).toInt();
 	
@@ -852,6 +854,8 @@ void Servatrice::addIslInterface(int serverId, IslInterface *interface)
 	// Only call with islLock locked for writing
 	
 	islInterfaces.insert(serverId, interface);
+	connect(interface, SIGNAL(externalUserJoined(ServerInfo_User)), this, SLOT(externalUserJoined(ServerInfo_User)));
+	connect(interface, SIGNAL(externalUserLeft(QString)), this, SLOT(externalUserLeft(QString)));
 }
 
 void Servatrice::removeIslInterface(int serverId)
@@ -866,13 +870,10 @@ void Servatrice::doSendIslMessage(const IslMessage &msg, int serverId)
 {
 	QReadLocker locker(&islLock);
 	
-	qDebug() << "hallo";
 	if (serverId == -1) {
 		QMapIterator<int, IslInterface *> islIterator(islInterfaces);
-		while (islIterator.hasNext()) {
-			qDebug() << "welt";
+		while (islIterator.hasNext())
 			islIterator.next().value()->transmitMessage(msg);
-		}
 	} else {
 		IslInterface *interface = islInterfaces.value(serverId);
 		if (interface)
diff --git a/servatrice/src/servatrice.h b/servatrice/src/servatrice.h
index 87e466f5..95710cd1 100644
--- a/servatrice/src/servatrice.h
+++ b/servatrice/src/servatrice.h
@@ -26,6 +26,7 @@
 #include <QSslKey>
 #include <QHostAddress>
 #include <QReadWriteLock>
+#include <QMetaType>
 #include "server.h"
 
 class QSqlDatabase;
@@ -166,4 +167,6 @@ private:
 	QMap<int, IslInterface *> islInterfaces;
 };
 
+Q_DECLARE_METATYPE(ServerInfo_User)
+
 #endif