diff --git a/PeerAtCodeFramework.jar b/PeerAtCodeFramework.jar
index d48268b..13a01ae 100644
Binary files a/PeerAtCodeFramework.jar and b/PeerAtCodeFramework.jar differ
diff --git a/src/dev/peerat/backend/Configuration.java b/src/dev/peerat/backend/Configuration.java
index 1c3bc52..b4132aa 100644
--- a/src/dev/peerat/backend/Configuration.java
+++ b/src/dev/peerat/backend/Configuration.java
@@ -46,6 +46,8 @@ public class Configuration {
 	private String jwt_key;
 	
 	private String sql_folder;
+	
+	private int event_chapter;
 
 	private File _file;
 
@@ -228,4 +230,8 @@ public class Configuration {
 	public String getSqlFolder(){
 		return this.sql_folder;
 	}
+	
+	public int getEventChapter(){
+		return this.event_chapter;
+	}
 }
\ No newline at end of file
diff --git a/src/dev/peerat/backend/Main.java b/src/dev/peerat/backend/Main.java
index c5d01cd..d382d95 100644
--- a/src/dev/peerat/backend/Main.java
+++ b/src/dev/peerat/backend/Main.java
@@ -93,7 +93,6 @@ public class Main{
 			public void exec(Matcher matcher, Context context, HttpReader reader, HttpWriter writer) throws Exception {
 				context.response(200);
 			}
-
 		});
 		
 		initRoutes(router, repo, config);
@@ -141,6 +140,25 @@ public class Main{
 			}
 		}).start();
 		
+		new Thread(new Runnable(){
+			public void run(){
+				Key key = new Key();
+				
+				Locker<Throwable> locker = router.getExceptionLogger();
+				
+				locker.init(key);
+				try {
+					while(true){
+						locker.lock(key);
+						locker.getValue(key).printStackTrace();
+					}
+				}catch(Exception e){
+					e.printStackTrace();
+				}
+				locker.remove(key);
+			}
+		}).start();
+		
 		if(config.useSsl()) router.configureSSL(config.getSslKeystore(), config.getSslKeystorePasswd());
 		router.listen(config.getTcpPort(), config.useSsl());
 	}
@@ -150,7 +168,8 @@ public class Main{
 				.of(repo, router, config, new RouteExtracter(router), config.getMail())
 				.of("waitting", new HashMap<>())
 				.of("leaderboard", new Locker<>())
-				.of("groups", new Locker<>()));
+				.of("groups", new Locker<>())
+				.of("groupMessages", new Locker<>()));
 		
 //		Bot bot = new Bot(config, repo, groupLock);
 //		bot.start();
diff --git a/src/dev/peerat/backend/routes/EventSSE.java b/src/dev/peerat/backend/routes/EventSSE.java
new file mode 100644
index 0000000..1568277
--- /dev/null
+++ b/src/dev/peerat/backend/routes/EventSSE.java
@@ -0,0 +1,75 @@
+package dev.peerat.backend.routes;
+
+import java.util.regex.Matcher;
+
+import dev.peerat.backend.Configuration;
+import dev.peerat.backend.model.Group;
+import dev.peerat.backend.model.PeerAtUser;
+import dev.peerat.backend.repository.DatabaseGroupRepository;
+import dev.peerat.backend.repository.DatabaseRepository;
+import dev.peerat.framework.Context;
+import dev.peerat.framework.HttpWriter;
+import dev.peerat.framework.Injection;
+import dev.peerat.framework.Locker;
+import dev.peerat.framework.Locker.Key;
+import dev.peerat.framework.Route;
+
+public class EventSSE{
+	
+	private Locker<GroupMessage> locker;
+	private DatabaseGroupRepository repo;
+	private int eventChapter;
+	
+	public EventSSE(@Injection("groupMessages") Locker<GroupMessage> locker, DatabaseRepository repo, Configuration config){
+		this.locker = locker;
+		this.repo = repo.getGroupRepository();
+		this.eventChapter = config.getEventChapter();
+	}
+	
+	@Route(path = "^/group/event/$", needLogin = true)
+	public void connect(Context context, HttpWriter writer) throws Exception {
+		Group group = repo.getPlayerGroup(context.<PeerAtUser>getUser().getId(), this.eventChapter);
+		if(group == null){
+			context.response(401);
+			return;
+		}
+		context.response(200, "Content-Type: text/event-stream");
+		
+		Key key = new Key();
+		
+		locker.init(key);
+		try {
+			while(true){
+				GroupMessage message = locker.getValue(key);
+				if(message.getGroup() == null || message.getGroup().equals(group.getName())){
+					writer.write("data: "+message.getMessage()+"\n\n");
+					writer.flush();
+				}
+				locker.lock(key);
+			}
+		}catch(Exception e){
+			e.printStackTrace();
+		}
+		locker.remove(key);
+	}
+
+	public static class GroupMessage{
+		
+		private String group;
+		private String message;
+		
+		public GroupMessage(String group, String message){
+			this.group = group;
+			this.message = message;
+		}
+		
+		public String getGroup(){
+			return this.group;
+		}
+		
+		public String getMessage(){
+			return this.message;
+		}
+		
+	}
+}
diff --git a/src/dev/peerat/backend/routes/admins/GroupController.java b/src/dev/peerat/backend/routes/admins/GroupController.java
new file mode 100644
index 0000000..5f024fa
--- /dev/null
+++ b/src/dev/peerat/backend/routes/admins/GroupController.java
@@ -0,0 +1,31 @@
+package dev.peerat.backend.routes.admins;
+
+import dev.peerat.backend.routes.EventSSE.GroupMessage;
+import dev.peerat.framework.Context;
+import dev.peerat.framework.HttpReader;
+import dev.peerat.framework.Injection;
+import dev.peerat.framework.Locker;
+import dev.peerat.framework.Route;
+import dev.peerat.framework.utils.json.JsonMap;
+
+public class GroupController {
+	
+	private Locker<GroupMessage> locker;
+	
+	public GroupController(@Injection("groupMessages") Locker<GroupMessage> locker){
+		this.locker = locker;
+	}
+	
+	@Route(path = "^/admin/event/$", needLogin = true)
+	public void send(Context context, HttpReader reader) throws Exception{
+		JsonMap json = reader.readJson();
+		if(!json.has("message")){
+			context.response(400);
+			return;
+		}
+		
+		locker.setValue(new GroupMessage(json.get("group"), json.get("message")));
+		context.response(200);
+	}
+
+}