chore(learn): Applied MDX format to Chinese curriculum files (#40462)
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@@ -1,13 +1,11 @@
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---
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id: 589fc831f9fc0f352b528e76
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title: 处理连接断开
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challengeType: 2
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forumTopicId: 301552
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title: 处理连接断开
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---
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## Description
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<section id='description'>
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# --description--
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你也许注意到,目前为止我们只处理用户数量的增加,没有处理减少。事实上,处理用户断开连接也很简单。区别在于,新连接的监听是发生在整个服务器上,但连接断开的监听是发生在每个 socket 上。
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@@ -21,48 +19,43 @@ socket.on('disconnect', () => {
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为确保客户端可以看到实时的用户数量,显然,我们应该在用户断开时让 currentUsers 减 1,然后发送 'user count' 事件,并使用修改后的用户数量。
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<strong>注意:</strong>和 <code>'disconnect'</code> 类似,所有 socket 可以发送到服务器的事件,我们都应该在有 'socket' 定义的连接监听器里处理。
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**注意:** 和 `'disconnect'` 类似,所有 socket 可以发送到服务器的事件,我们都应该在有 'socket' 定义的连接监听器里处理。
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完成上述要求后,你可以在下方提交你的页面链接。如果你遇到了问题,可以参考 <a href='https://gist.github.com/camperbot/ab1007b76069884fb45b215d3c4496fa' target='_blank'>这里</a> 的答案。
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完成上述要求后,你可以在下方提交你的页面链接。如果你遇到了问题,可以参考 [这里](https://gist.github.com/camperbot/ab1007b76069884fb45b215d3c4496fa) 的答案。
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</section>
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# --hints--
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## Instructions
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<section id='instructions'>
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: 服务器应处理断开 socket 连接的事件。
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testString: getUserInput => $.get(getUserInput('url')+ '/_api/server.js') .then(data => { assert.match(data, /socket.on.*('|")disconnect('|")/gi, ''); }, xhr => { throw new Error(xhr.statusText); })
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- text: 客户端应监听 'user count' 事件。
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testString: getUserInput => $.get(getUserInput('url')+ '/public/client.js') .then(data => { assert.match(data, /socket.on.*('|")user count('|")/gi, 'Your client should be connection to server with the connection defined as socket'); }, xhr => { throw new Error(xhr.statusText); })
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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</section>
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## Solution
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<section id='solution'>
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服务器应处理断开 socket 连接的事件。
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```js
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/**
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Backend challenges don't need solutions,
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because they would need to be tested against a full working project.
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Please check our contributing guidelines to learn more.
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*/
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(getUserInput) =>
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$.get(getUserInput('url') + '/_api/server.js').then(
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(data) => {
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assert.match(data, /socket.on.*('|")disconnect('|")/gi, '');
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},
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(xhr) => {
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throw new Error(xhr.statusText);
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}
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);
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```
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</section>
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客户端应监听 'user count' 事件。
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```js
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(getUserInput) =>
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$.get(getUserInput('url') + '/public/client.js').then(
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(data) => {
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assert.match(
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data,
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/socket.on.*('|")user count('|")/gi,
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'Your client should be connection to server with the connection defined as socket'
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);
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},
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(xhr) => {
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throw new Error(xhr.statusText);
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}
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);
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```
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# --solutions--
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