added get_pong route in server

server/README.md

@@ -28,6 +28,27 @@ Types can be `client -> server`, `server -> client <private | room>`.
 Private messages are sent directly to the client.
 Room messages are sent to everyone in a room.
 
+## Get Pong
+
+**Type:** `client -> server`  
+**Description:** Used to get pong message from server when requested. This can be used to detect when a client is disconnected from the server.
+**Payload:**
+
+```typescript
+{
+    "route": "get_pong",
+}
+```
+
+**Type:** `server -> client <private>`  
+**Payload:**
+
+```typescript
+{
+    "message": "pong",
+}
+```
+
 ## Get User Info
 
 **Type:** `client -> server`  
@@ -96,7 +117,7 @@ Room messages are sent to everyone in a room.
 
 ```typescript
 {
-	"route": "leave_room_response",
+	"message": "leave_room_response",
 	"status": string,
 }
 ```

server/src/index.ts

@@ -86,6 +86,12 @@ function main(logging: boolean = true) {
             logger.info("received pong");
         });
 
+        // Added by Anuj
+        // When receive ping from a client this is triggered
+        ws.on('ping', () => {
+            logger.info("received ping");
+        });
+
         // When a user disconnects, their account is removed, and they are removed from all groups
         ws.on("close", () => {
             hapticLink.removeUser(wsw);

server/src/socket/routes.ts

@@ -5,13 +5,14 @@ import { LeaveRoomHandler, LeaveRoomSchema } from "./routes/leave_room";
 import { SendVibrationHandler, SendVibrationSchema } from "./routes/send_touch";
 import { SetUsernameHandler, SetUsernameSchema } from "./routes/set_username";
 import { TestConnnectionSchema, TestConnectionHandler } from "./routes/test_connection";
-
+import { GetPongSchema, GetPongHandler } from "./routes/get_pong";
 /**
  * Registers all the routes for Haptic Link
  * @param {HapticLinkServer} router
  */
 export function registerRoutes(router: HapticLinkServer) {
     router.addRoute("test_connection", TestConnnectionSchema, TestConnectionHandler);
+    router.addRoute("get_pong",GetPongSchema,GetPongHandler);
     router.addRoute("join_room", JoinRoomSchema, JoinRoomHandler);
     router.addRoute("leave_room", LeaveRoomSchema, LeaveRoomHandler);
     router.addRoute("send_touch", SendVibrationSchema, SendVibrationHandler);

server/src/socket/routes/get_pong.ts

@@ -0,0 +1,13 @@
+import { z } from "zod";
+import { Context } from "../hapticLinkServer";
+
+export interface GetPongPayload { }
+export const GetPongSchema = z.object({ });
+
+export function GetPongHandler(ctx: Context<GetPongPayload>) {
+    return ctx.ws.send(
+        JSON.stringify({
+            message: "pong",
+        })
+    );
+}