<p></p>
<blockquote>
<p><a class="user-mention" data-hovercard-type="user" data-hovercard-url="/users/dmos62/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/dmos62">@dmos62</a> I think I've found the issue. If a writeTarget can't be established because of some weird setup it will cause a NullPointerException. Anyways it was a redundant call that was triggered by the <code>peer.close()</code> already.</p>
</blockquote>
<p>I wonder why <code>writeTarget</code> (or <code>handler</code>) in NioClient:119 sometimes is null.</p>
<p><a class="user-mention" data-hovercard-type="user" data-hovercard-url="/users/wiz/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/wiz">@wiz</a> it would be very useful if you could try reproducing the linux problems with the redundant <code>client.closeConnection();</code>. If you can reproduce that way, these could be the same underlying problem.</p>

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