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itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem"><a href="/categories/%E7%94%9F%E6%B4%BB/" itemprop="item" rel="index" title="分类于 生活"><span itemprop="name">生活</span></a><meta itemprop="position" content="1"></span><i class="ic i-angle-right"></i> <span class="current" itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem"><a href="/categories/%E7%94%9F%E6%B4%BB/%E5%BF%83%E5%BE%97%E4%BD%93%E4%BC%9A/" itemprop="item" rel="index" title="分类于 心得体会"><span itemprop="name">心得体会</span></a><meta itemprop="position" content="2"></span></div><article itemscope itemtype="http://schema.org/Article" class="post block" lang="zh-CN"><link itemprop="mainEntityOfPage" href="https://blog.jingxiyuan.cn/2022/09/21/%E8%AE%B0%E4%B8%80%E6%AC%A1netty-socket-io%E6%9C%8D%E5%8A%A1%E7%AB%AF%E8%BF%9E%E6%8E%A5%E4%B8%8D%E4%B8%8A%E7%9A%84%E9%97%AE%E9%A2%98/"><span hidden itemprop="author" itemscope itemtype="http://schema.org/Person"><meta itemprop="image" content="/images/avatar.jpg"><meta itemprop="name" content="Hito li"><meta itemprop="description" content="天下事有难易乎？为之，则难者亦易矣, hito 的博客"></span><span hidden itemprop="publisher" itemscope itemtype="http://schema.org/Organization"><meta itemprop="name" content="Hito 的公告栏"></span><div class="body md" itemprop="articleBody"><p><em>今天前端开发跟我反馈用 vue 的 socketio 连接不上后台服务，连接无反应无任何报错。所以不清楚是前端代码问题还是后台服务的问题。由于框架为另一同事搭建，我只负责处理后端业务逻辑部分，所以第一时间我也不清楚具体的原因。于是我找了个第三方的 socket 工具尝试连接，果然有问题。但是只是提示连接不上，无明显错误原因。到后台查看发现有提示 Unknown transport for request 错误，最后通过调试发现 netty-socketio 的库中 AuthorizeHandler 类有段处理 transport 的代码只能接受大写的 WEBSOCKET 或者 POLLING，于是我在工具中按要求填上结果还是不行。然后我在网上搜索也未发现有相关问题，只发现有网友提示需要用 socketio 的库，不要自己写 socket 连接。于是我找了 socket.io.js 来连接，结果还是一样。经过大量调试改代码，最后突发奇想，有没有可能跟 netty-socketio 的版本有关系，于是我把版本从 1.7.20 升级到 1.7.21，结果就奇迹般的好了。</em></p><h6 id="总结就好像大力出奇迹实在找不到原因的时候不妨升级一下版本说不定问题就解决了呢o_o"><a class="anchor" href="#总结就好像大力出奇迹实在找不到原因的时候不妨升级一下版本说不定问题就解决了呢o_o">#</a> 总结：就好像大力出奇迹，实在找不到原因的时候不妨升级一下版本，说不定问题就解决了呢！O (∩_∩) O</h6><div class="tags"><a href="/tags/%E8%B8%A9%E5%9D%91/" rel="tag"><i class="ic i-tag"></i> 踩坑</a> <a href="/tags/netty/" rel="tag"><i class="ic i-tag"></i> netty</a> <a href="/tags/socketIO/" rel="tag"><i class="ic i-tag"></i> socketIO</a></div></div><footer><div class="meta"><span class="item"><span class="icon"><i class="ic i-calendar-check"></i> </span><span class="text">更新于</span> <time title="修改时间：2022-10-19 11:00:05" itemprop="dateModified" datetime="2022-10-19T11:00:05+08:00">2022-10-19</time> </span><span id="2022/09/21/记一次netty-socket-io服务端连接不上的问题/" class="item leancloud_visitors" data-flag-title="记一次 netty-socketio 服务端连接不上的问题" title="阅读次数"><span class="icon"><i class="ic i-eye"></i> </span><span class="text">阅读次数</span> <span class="leancloud-visitors-count"></span> <span class="text">次</span></span></div><div class="reward"><button><i class="ic i-heartbeat"></i> 赞赏</button><p>请我喝[茶]~(￣▽￣)~*</p><div id="qr"><div><img data-src="/images/wechatpay.png" alt="Hito li 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href="#%E6%80%BB%E7%BB%93%E5%B0%B1%E5%A5%BD%E5%83%8F%E5%A4%A7%E5%8A%9B%E5%87%BA%E5%A5%87%E8%BF%B9%E5%AE%9E%E5%9C%A8%E6%89%BE%E4%B8%8D%E5%88%B0%E5%8E%9F%E5%9B%A0%E7%9A%84%E6%97%B6%E5%80%99%E4%B8%8D%E5%A6%A8%E5%8D%87%E7%BA%A7%E4%B8%80%E4%B8%8B%E7%89%88%E6%9C%AC%E8%AF%B4%E4%B8%8D%E5%AE%9A%E9%97%AE%E9%A2%98%E5%B0%B1%E8%A7%A3%E5%86%B3%E4%BA%86%E5%91%A2o_o"><span class="toc-number">1.</span> <span class="toc-text">总结：就好像大力出奇迹，实在找不到原因的时候不妨升级一下版本，说不定问题就解决了呢！O (∩_∩) O</span></a></li></ol></div><div class="related panel pjax" data-title="系列文章"><ul><li class="active"><a href="/2022/09/21/%E8%AE%B0%E4%B8%80%E6%AC%A1netty-socket-io%E6%9C%8D%E5%8A%A1%E7%AB%AF%E8%BF%9E%E6%8E%A5%E4%B8%8D%E4%B8%8A%E7%9A%84%E9%97%AE%E9%A2%98/" rel="bookmark" title="记一次netty-socketio服务端连接不上的问题">记一次netty-socketio服务端连接不上的问题</a></li></ul></div><div class="overview panel" data-title="站点概览"><div class="author" itemprop="author" itemscope itemtype="http://schema.org/Person"><img class="image" itemprop="image" alt="Hito li" 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