2.4.x/docs/manual/mod/mod_dialup.xml

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<modulesynopsis metafile="mod_dialup.xml.meta">
<name>mod_dialup</name>
<description>Send static content at a bandwidth rate limit, defined by the various old modem standards</description>
<status>Experimental</status>
<sourcefile>mod_dialup.c</sourcefile>
<identifier>dialup_module</identifier>

<summary>
<p>It is a module that sends static content at a bandwidth rate limit, defined
by the various old modem standards. So, you can browse your site with a 56k
V.92 modem, by adding something like this:</p>

<highlight language="config">
&lt;Location "/mysite"&gt;
    ModemStandard "V.92"
&lt;/Location&gt;
</highlight>

<p>Previously to do bandwidth rate limiting modules would have to block an entire
thread, for each client, and insert sleeps to slow the bandwidth down.
Using the new suspend feature, a handler can get callback N milliseconds in
the future, and it will be invoked by the Event MPM on a different thread,
once the timer hits.  From there the handler can continue to send data to the client.</p>
</summary>

<directivesynopsis>
<name>ModemStandard</name>
<description>Modem standard to simulate</description>
<syntax>ModemStandard V.21|V.26bis|V.32|V.34|V.92</syntax>
<contextlist><context>directory</context></contextlist>

<usage>
<p>Specify what modem standard you wish to simulate.</p>

<highlight language="config">
&lt;Location "/mysite"&gt;
    ModemStandard "V.26bis"
&lt;/Location&gt;
</highlight>

</usage>

</directivesynopsis>

</modulesynopsis>