socket.io v4.0.1 update

- added disconnect event to io
halilcakar · Apr 13, 2021 · deee1ac · deee1ac
1 parent 5418722
commit deee1ac
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Showing 3 changed files with 35 additions and 13 deletions.
diff --git a/package-lock.json b/package-lock.json
diff --git a/package.json b/package.json
@@ -29,6 +29,6 @@
     "dotenv": "8.2.0",
     "ejs": "3.1.3",
     "express": "4.17.1",
-    "socket.io": "3.0.5"
+    "socket.io": "^4.0.1"
   }
 }
diff --git a/server.js b/server.js
@@ -98,6 +98,28 @@ io.on("connection", (socket) => {
       }
     }
   });
+
+  socket.on("disconnect", () => {
+    let channel = channels.find((ch) =>
+      [ch.creatorID, ch.visitorID].includes(socket.id)
+    );
+    if (channel) {
+      if (channel.creatorID === socket.id) {
+        channel.creator = null;
+        channel.creatorID = null;
+      }
+      if (channel.visitorID === socket.id) {
+        channel.visitor = null;
+        channel.visitorID = null;
+      }
+      io.in(channel.id).emit("userLeft");
+
+      if (channel.visitor === null && channel.creator === null) {
+        channels.splice(channels.indexOf(channel), 1);
+        process.nextTick(() => (channel = null));
+      }
+    }
+  });
 });
 
 server.listen(PORT, () => {