import ...
let socket;
const Game = () => {
const ...
const [userCount, setUserCount] = useState(0);
const scrollToBottom = () => {
endToMessages.current?.scrollIntoView({ behavior: "smooth" });
};
const { _id, username } = JSON.parse(localStorage.getItem("user")).user;
useEffect(() => {
socket = io(process.env.REACT_APP_BASE_URL);
socket.emit("game_lobby", { id: _id, username, room: gameInfo.name });
return () => socket.disconnect();
}, [_id, username, gameInfo.name]);
useEffect(() => {
socket.on("message", ({ user, text }) => {
setMessages((prev) => [...prev, { user, text }]);
scrollToBottom();
});
socket.on("user_count",({count}) => {
setUserCount(count);
})
}, []);
console.log("Current user count",userCount);
const sendMessage = () => {
...
};
return (
<div className="game section">
...
</div>
);
};
export default Game;
Server side:
import { Server } from "socket.io";
const socketApi = (server) => {
const io = new Server(server, {
cors: {
origin: ["https://mook-f2b4e.web.app", "http://localhost:3000"],
methods: ["GET", "POST"],
},
});
io.on("connection", (socket) => {
socket.on("disconnect", () => {
console.log(`user ${socket.id} had left`);
});
socket.on("game_lobby", async ({ id, username, room }) => {
console.log("We have a new connetion.");
socket.join(room);
const roomClients = await (await io.in(room).fetchSockets()).length;
console.log(roomClients);
io.to(room).emit("user_count", { count: roomClients });
socket.on("disconnect", () => {
io.to(room).emit("user_count", { count: roomClients });
});
socket.emit("message", {
user: "Admin",
text: `${username} welcome to ${room} room`,
});
});
socket.on("send_message", ({ name, message, room }) => {
io.to(room).emit("message", { user: name, text: message });
});
});
return io;
};
export default socketApi;
Hi all.When I try to get user count when component mount but I can't.First time when component did mount I get 0 value. If someone else joins the room then I can get its current value. If I could explain properly I mean let's say there are 3 people in the room and I joined that room later. Now there are 4 people in the room but I got 0 value from console.log("Current user count", userCount) if the 5th person joins the room then I can get the current value from the server.
