chore(i8n,learn): processed translations

curriculum/challenges/espanol/06-quality-assurance/advanced-node-and-express/handle-a-disconnect.md

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+---
+id: 589fc831f9fc0f352b528e76
+title: Handle a Disconnect
+challengeType: 2
+forumTopicId: 301552
+dashedName: handle-a-disconnect
+---
+
+# --description--
+
+You may notice that up to now you have only been increasing the user count. Handling a user disconnecting is just as easy as handling the initial connect, except you have to listen for it on each socket instead of on the whole server.
+
+To do this, add another listener inside the existing `'connect'` listener that listens for `'disconnect'` on the socket with no data passed through. You can test this functionality by just logging that a user has disconnected to the console.
+
+```js
+socket.on('disconnect', () => {
+  /*anything you want to do on disconnect*/
+});
+```
+
+To make sure clients continuously have the updated count of current users, you should decrease the currentUsers by 1 when the disconnect happens then emit the 'user count' event with the updated count!
+
+**Note:** Just like `'disconnect'`, all other events that a socket can emit to the server should be handled within the connecting listener where we have 'socket' defined.
+
+Submit your page when you think you've got it right. If you're running into errors, you can check out the project completed up to this point [here](https://gist.github.com/camperbot/ab1007b76069884fb45b215d3c4496fa).
+
+# --hints--
+
+Server should handle the event disconnect from a socket.
+
+```js
+(getUserInput) =>
+  $.get(getUserInput('url') + '/_api/server.js').then(
+    (data) => {
+      assert.match(data, /socket.on.*('|")disconnect('|")/gi, '');
+    },
+    (xhr) => {
+      throw new Error(xhr.statusText);
+    }
+  );
+```
+
+Your client should be listening for 'user count' event.
+
+```js
+(getUserInput) =>
+  $.get(getUserInput('url') + '/public/client.js').then(
+    (data) => {
+      assert.match(
+        data,
+        /socket.on.*('|")user count('|")/gi,
+        'Your client should be connection to server with the connection defined as socket'
+      );
+    },
+    (xhr) => {
+      throw new Error(xhr.statusText);
+    }
+  );
+```
+
+# --solutions--
+
+```js
+/**
+  Backend challenges don't need solutions, 
+  because they would need to be tested against a full working project. 
+  Please check our contributing guidelines to learn more.
+*/
+```