</li>

<li>If the next step fails, abort all remaining steps and <a>close

the presentation connection</a> <var>S</var> with <a for=

<var>closeReason</var>, and a human readable message describing the

failure as <var>closeMessage</var>.

</li>

When the <code><dfn>close</dfn>()</code> method is called on a

<a>PresentationConnection</a> <var>S</var>, the <a>user agent</a>

MUST <a>start closing the presentation connection</a> <var>S</var>

<var>closeReason</var> and an empty message as

<var>closeMessage</var>.

</p>

or <a for="PresentationConnectionState">connected</a>, the <a>user

agent</a> SHOULD <a>start closing the presentation connection</a>

<var>S</var> with <a for=

<var>closeReason</var> and an empty <var>closeMessage</var>.

</p>

<p>

If the <a>user agent</a> receives a signal from the <a>destination

browsing context</a> that a <a>PresentationConnection</a>

<var>S</var> is to be closed, it SHOULD <a>close the presentation

connection</a> <var>S</var> with <a for=

<var>closeReason</var> and an empty <var>closeMessage</var>.

</p>

</div>

</li>

<li>If the connection cannot be completed, <a>close the

presentation connection</a> <var>S</var> with <a for=

<var>closeReason</var>, and a human readable message describing the

failure as <var>closeMessage</var>.

</li>

<li>If the previous step encounters an unrecoverable error, then

abruptly <a>close the presentation connection</a>

<var>presentationConnection</var> with <a for=

<var>closeReason</var>, and a <var>closeMessage</var> describing

the error encountered.

</li>

<a data-lt="receive-algorithm">receiving a message</a> through

<var>presentationConnection</var>, it SHOULD abruptly <a>close the

presentation connection</a> <var>presentationConnection</var> with

<var>closeReason</var>, and a human readable description of the

error encountered as <var>closeMessage</var>.

</p>

Interface <code>PresentationConnectionCloseEvent</code>

</h4>

<pre class="idl">

[Constructor(DOMString type, PresentationConnectionCloseEventInit eventInitDict)]

interface PresentationConnectionCloseEvent : Event {

readonly attribute DOMString message;

};

dictionary PresentationConnectionCloseEventInit : EventInit {

DOMString message = "";

};

<code>reason</code> attribute provides the reason why the

connection was closed:

</p>

<li>

<dfn>error</dfn> means that the mechanism for connecting or

communicating with a presentation entered an unrecoverable error.

</ul>

<p>

When the <code>reason</code> attribute is <a for=

SHOULD set the error message to a human readable description of how

the communication channel encountered an error.

</p>

</dd>

<dd>

<var>closeReason</var>, the

connection is to be closed

</dd>

<dd>

proceeding to the next step.

</li>

<li>If <var>closeReason</var> is not <a for=

the steps to <a>close the presentation connection</a> with

<var>presentationConnection</var>, <var>closeReason</var>, and

<var>closeMessage</var>.

</dd>

<dd>

<var>closeReason</var>, the

connection is to be closed

</dd>

<dd>