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<title>RADIUS Packet Types</title>
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<h2 class="title">RADIUS Packet Types</h2>
<p class="para">
RADIUS packets, whether requests or responses, always include a type. These
constants are provided to make it easier to specify types when using
<span class="function"><a href="function.radius-create-request.html" class="function">radius_create_request()</a></span> and when comparing the result of
<span class="function"><a href="function.radius-send-request.html" class="function">radius_send_request()</a></span>.
</p>
<dl>
<dt id="constant.radius-access-request">
<span class="term">
<strong><code>RADIUS_ACCESS_REQUEST</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<p class="para">
An Access-Request, used to authenticate a user against a RADIUS server.
Access request packets must include a
<a href="radius.constants.attributes.html#constant.radius-nas-ip-address" class="link"><strong><code>RADIUS_NAS_IP_ADDRESS</code></strong></a>
or a
<a href="radius.constants.attributes.html#constant.radius-nas-identifier" class="link"><strong><code>RADIUS_NAS_IDENTIFIER</code></strong></a>
attribute, must also include a
<a href="radius.constants.attributes.html#constant.radius-user-password" class="link"><strong><code>RADIUS_USER_PASSWORD</code></strong></a>,
<a href="radius.constants.attributes.html#constant.radius-chap-password" class="link"><strong><code>RADIUS_CHAP_PASSWORD</code></strong></a>
or a
<a href="radius.constants.attributes.html#constant.radius-state" class="link"><strong><code>RADIUS_STATE</code></strong></a>
attribute, and should include a
<a href="radius.constants.attributes.html#constant.radius-user-name" class="link"><strong><code>RADIUS_USER_NAME</code></strong></a>
attribute.
</p>
</dd>
</dt>
<dt id="constant.radius-access-accept">
<span class="term">
<strong><code>RADIUS_ACCESS_ACCEPT</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<p class="para">
An Access-Accept response to an Access-Request indicating that the
RADIUS server authenticated the user successfully.
</p>
</dd>
</dt>
<dt id="constant.radius-access-reject">
<span class="term">
<strong><code>RADIUS_ACCESS_REJECT</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<p class="para">
An Access-Reject response to an Access-Request indicating that the
RADIUS server could not authenticate the user.
</p>
</dd>
</dt>
<dt id="constant.radius-access-challenge">
<span class="term">
<strong><code>RADIUS_ACCESS_CHALLENGE</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<p class="para">
An Access-Challenge response to an Access-Request indicating that the
RADIUS server requires further information in another Access-Request
before authenticating the user.
</p>
</dd>
</dt>
<dt id="constant.radius-accounting-request">
<span class="term">
<strong><code>RADIUS_ACCOUNTING_REQUEST</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<p class="para">
An Accounting-Request, used to convey accounting information for a
service to the RADIUS server.
</p>
</dd>
</dt>
<dt id="constant.radius-accounting-response">
<span class="term">
<strong><code>RADIUS_ACCOUNTING_RESPONSE</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<p class="para">
An Accounting-Response response to an Accounting-Request.
</p>
</dd>
</dt>
<dt id="constant.radius-coa-request">
<span class="term">
<strong><code>RADIUS_COA_REQUEST</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<p class="para">
A CoA-Request, sent from the RADIUS server to indicate that the
authorisations within the user session have changed. A response must be
sent in the form of a CoA-ACK or a CoA-NAK.
</p>
<p class="para">
This constant is available in PECL radius 1.3.0 and later.
</p>
</dd>
</dt>
<dt id="constant.radius-coa-ack">
<span class="term">
<strong><code>RADIUS_COA_ACK</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<p class="para">
A CoA-ACK, sent to the RADIUS server to indicate that the user
authorisations have been updated.
</p>
<p class="para">
This constant is available in PECL radius 1.3.0 and later.
</p>
</dd>
</dt>
<dt id="constant.radius-coa-nak">
<span class="term">
<strong><code>RADIUS_COA_NAK</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<p class="para">
A CoA-NAK, sent to the RADIUS server to indicate that the user
authorisations could not be updated.
</p>
<p class="para">
This constant is available in PECL radius 1.3.0 and later.
</p>
</dd>
</dt>
<dt id="constant.radius-disconnect-request">
<span class="term">
<strong><code>RADIUS_DISCONNECT_REQUEST</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<p class="para">
A Disconnect-Request, sent from the RADIUS server to indicate that the
user session must be terminated.
</p>
<p class="para">
This constant is available in PECL radius 1.3.0 and later.
</p>
</dd>
</dt>
<dt id="constant.radius-disconnect-ack">
<span class="term">
<strong><code>RADIUS_DISCONNECT_ACK</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<p class="para">
A Disconnect-ACK, sent to the RADIUS server to indicate that the user
session has been terminated.
</p>
<p class="para">
This constant is available in PECL radius 1.3.0 and later.
</p>
</dd>
</dt>
<dt id="constant.radius-disconnect-nak">
<span class="term">
<strong><code>RADIUS_DISCONNECT_NAK</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<p class="para">
A Disconnect-NAK, sent to the RADIUS server to indicate that the user
session could not be terminated.
</p>
<p class="para">
This constant is available in PECL radius 1.3.0 and later.
</p>
</dd>
</dt>
</dl>
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