RoomChatMessage 구현

 import { Connection } from "../connection/Connection";
 import { User } from "../user/User";
 import { loginHandler } from "./handler/loginHandler";
+import { roomChatHandler } from "./handler/roomChatHandler";
 import { roomJoinHandler } from "./handler/roomJoinHandler";
 import { roomLeaveHandler } from "./handler/roomLeaveHandler";
 import { Message, MessageType } from "./types";
@@ -18,6 +19,11 @@ export class MessageHandlerRegistry {
       MessageType.ROOM_LEAVE,
       roomLeaveHandler
     );
+    this.registerHandlerAuthed(
+      connection,
+      MessageType.ROOM_CHAT,
+      roomChatHandler
+    );
   }
 
   private static registerHandler<T extends Message>(

+import { Connection } from "../../connection/Connection";
+import { RoomManager } from "../../room/RoomManager";
+import { User } from "../../user/User";
+import { RoomChatMessage, RoomJoinMessage } from "../types";
+
+export function roomChatHandler(user: User, message: RoomChatMessage): void {
+  user.room?.sendChat(user, message.message);
+}

@@ -65,6 +65,17 @@ export class RoomUserUpdateMessage implements Message {
   ) {}
 }
 
+/**
+ * 클라 <-> 서버
+ * 접속한 방에서 채팅을 보내거나 받을 때 사용됩니다. 자신이 보낸 채팅은 서버에 의해 수신되지 않습니다.
+ * @param message 메세지 내용입니다.
+ * @param sender 채팅을 보낸 유저의 username입니다. 채팅이 클라이언트로 수신 될 경우에만 값을 가집니다.
+ */
+export class RoomChatMessage implements Message {
+  readonly type = MessageType.ROOM_CHAT;
+  constructor(public message: string, public sender?: string) {}
+}
+
 export class MessageType {
   static readonly LOGIN = "login";
   static readonly ROOM_LIST = "room_list";
@@ -72,4 +83,5 @@ export class MessageType {
   static readonly ROOM_LEAVE = "room_leave";
   static readonly ROOM_INFO = "room_info";
   static readonly ROOM_USER_UPDATE = "room_user_update";
+  static readonly ROOM_CHAT = "room_chat";
 }

@@ -3,6 +3,7 @@ import { v4 as uuidv4 } from "uuid";
 import { RoomData } from "./types";
 import {
   Message,
+  RoomChatMessage,
   RoomInfoMessage,
   RoomUserUpdateMessage,
 } from "../message/types";
@@ -54,6 +55,10 @@ export class Room {
     }
   }
 
+  public sendChat(user: User, message: string): void {
+    this.broadcast(new RoomChatMessage(message, user.username), user);
+  }
+
   public getData(): RoomData {
     return {
       uuid: this.uuid,