<ul class="contains-task-list">
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> I have searched the <a href="https://github.com/apache/incubator-dubbo/issues">issues</a> of this repository and believe that this is not a duplicate.</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> I have checked the <a href="https://github.com/apache/incubator-dubbo/wiki/FAQ">FAQ</a> of this repository and believe that this is not a duplicate.</li>
</ul>
<h3 dir="auto">Environment</h3>
<ul dir="auto">
<li>Dubbo version: 2.</li>
<li>Operating System version: mac</li>
<li>Java version: 1.8</li>
</ul>
<h3 dir="auto">Step to reproduce this issue</h3>
<ol dir="auto">
<li>表现：<br>
consumer 在某些情况下会抛出<code class="notranslate">Dubbo client can not supported string message</code>异常，并且 message 显示为乱码信息，经查找资料是说消息体 &gt;8M 导致；</li>
<li>实际测试结果：<br>
我本地测试的时候，均无法复现对应的异常信息，&gt;8M 的表现为 consumer 等待超时，且 provider 抛出<code class="notranslate">Data length too large:</code>异常。</li>
</ol>
<p dir="auto">求大神们帮忙分析一下，在什么情况下会出现标题中的那种异常？</p>
<ul class="contains-task-list">
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox"> I have searched the <a href="https://github.com/apache/dubbo/issues">issues</a> of this repository and believe that this is not a duplicate.</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox"> I have checked the <a href="https://github.com/apache/dubbo/blob/master/FAQ.md">FAQ</a> of this repository and believe that this is not a duplicate.</li>
</ul>
<h3 dir="auto">Environment</h3>
<ul dir="auto">
<li>Dubbo version: 2.7.4.1</li>
<li>Java version: 1.8</li>
</ul>
<h3 dir="auto">Actual Result</h3>
<p dir="auto"></p><div class="Box Box--condensed my-2">
  <div class="Box-header f6">
    <p class="mb-0 text-bold">
      <a href="https://github.com/apache/dubbo/blob/00febe9e3cb450737d403a937322dc08ab5c6f2a/dubbo-remoting/dubbo-remoting-netty4/src/main/java/org/apache/dubbo/remoting/transport/netty4/NettyClient.java#L80">dubbo/dubbo-remoting/dubbo-remoting-netty4/src/main/java/org/apache/dubbo/remoting/transport/netty4/NettyClient.java</a>
    </p>
    <p class="mb-0 color-fg-muted">
         Line 80
      in
      <a data-pjax="true" class="commit-tease-sha" href="/apache/dubbo/commit/00febe9e3cb450737d403a937322dc08ab5c6f2a">00febe9</a>
    </p>
  </div>
  <div itemprop="text" class="Box-body p-0 blob-wrapper blob-wrapper-embedded data">
    <table class="highlight tab-size mb-0 js-file-line-container" data-tab-size="8" data-paste-markdown-skip="">

        <tbody><tr class="border-0">
          <td id="L80" class="blob-num border-0 px-3 py-0 color-bg-default" data-line-number="80"></td>
          <td id="LC80" class="blob-code border-0 px-3 py-0 color-bg-default blob-code-inner js-file-line"> <span class="pl-c">// the handler will be warped: MultiMessageHandler-&gt;HeartbeatHandler-&gt;handler</span> </td>
        </tr>
    </tbody></table>
  </div>
</div>
<p></p>
<p dir="auto"></p><div class="Box Box--condensed my-2">
  <div class="Box-header f6">
    <p class="mb-0 text-bold">
      <a href="https://github.com/apache/dubbo/blob/00febe9e3cb450737d403a937322dc08ab5c6f2a/dubbo-remoting/dubbo-remoting-netty4/src/main/java/org/apache/dubbo/remoting/transport/netty4/NettyServer.java#L79">dubbo/dubbo-remoting/dubbo-remoting-netty4/src/main/java/org/apache/dubbo/remoting/transport/netty4/NettyServer.java</a>
    </p>
    <p class="mb-0 color-fg-muted">
         Line 79
      in
      <a data-pjax="true" class="commit-tease-sha" href="/apache/dubbo/commit/00febe9e3cb450737d403a937322dc08ab5c6f2a">00febe9</a>
    </p>
  </div>
  <div itemprop="text" class="Box-body p-0 blob-wrapper blob-wrapper-embedded data">
    <table class="highlight tab-size mb-0 js-file-line-container" data-tab-size="8" data-paste-markdown-skip="">

        <tbody><tr class="border-0">
          <td id="L79" class="blob-num border-0 px-3 py-0 color-bg-default" data-line-number="79"></td>
          <td id="LC79" class="blob-code border-0 px-3 py-0 color-bg-default blob-code-inner js-file-line"> <span class="pl-c">// the handler will be warped: MultiMessageHandler-&gt;HeartbeatHandler-&gt;handler</span> </td>
        </tr>
    </tbody></table>
  </div>
</div>
<p></p>
<h3 dir="auto">Expected Result</h3>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="wrapped"><pre class="notranslate"><code class="notranslate">wrapped
</code></pre></div>