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server.js
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server.js
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const app = require("express")();
const httpServer = require("http").createServer(app);
const io = require("socket.io")(httpServer, {
cors: {
origin: "*",
methods: ["GET", "POST"],
},
});
const PORT = 7000;
// app.get("/", (req, res) => {
// res.status(200).json({ name: "Server" });
// });
const users = {};
io.on("connection", (socket) => {
console.log("someone connecte and socket id " + socket.id);
socket.on("disconnect", () => {
console.log(`${socket.id} disconnected`);
for (let user in users) {
if (users[user] === socket.id) {
delete users[user];
}
}
io.emit("all_users", users);
});
socket.on("new_user", (username) => {
console.log("Server : " + username);
users[username] = socket.id;
//we can tell every other users someone connected
io.emit("all_users", users);
});
socket.on("send_message", (data) => {
console.log(data);
const socketId = users[data.receiver];
io.to(socketId).emit("new_message", data);
});
});
httpServer.listen(PORT, () => {
console.log(`Server Listening on port ${PORT}`);
});