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<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Maximium number of proxies that a request can be forwarded
through</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>ProxyMaxForwards <var>number</var></code></td></tr>
-<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>ProxyMaxForwards 10</code></td></tr>
+<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>ProxyMaxForwards -1</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_proxy</td></tr>
-<tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>Available in Apache 2.0 and later</td></tr>
+<tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>Available in Apache 2.0 and later;
+ default behaviour changed in 2.2.7</td></tr>
</table>
<p>The <code class="directive">ProxyMaxForwards</code> directive specifies the
maximum number of proxies through which a request may pass, if there's no
- <code>Max-Forwards</code> header supplied with the request. This is
- set to prevent infinite proxy loops, or a DoS attack.</p>
+ <code>Max-Forwards</code> header supplied with the request. This may
+ be set to prevent infinite proxy loops, or a DoS attack.</p>
<div class="example"><h3>Example</h3><p><code>
ProxyMaxForwards 15
</code></p></div>
+ <p>Note that setting <code class="directive">ProxyMaxForwards</code> is a
+ violation of the HTTP/1.1 protocol (RFC2616), which forbids a Proxy
+ setting <code>Max-Forwards</code> if the Client didn't set it.
+ Earlier Apache versions would always set it. A negative
+ <code class="directive">ProxyMaxForwards</code> value, including the
+ default -1, gives you protocol-compliant behaviour, but may
+ leave you open to loops.</p>
+
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="ProxyPass" id="ProxyPass">ProxyPass</a> <a name="proxypass" id="proxypass">Directive</a></h2>
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<tr class="odd"><td><a href="mod_proxy.html#proxyiobuffersize">ProxyIOBufferSize <var>bytes</var></a></td><td> 8192 </td><td>sv</td><td>E</td></tr><tr class="odd"><td class="descr" colspan="4">Determine size of internal data throughput buffer</td></tr>
<tr><td><a href="mod_proxy.html#proxymatch"><ProxyMatch <var>regex</var>> ...</ProxyMatch></a></td><td></td><td>sv</td><td>E</td></tr><tr><td class="descr" colspan="4">Container for directives applied to regular-expression-matched
proxied resources</td></tr>
-<tr class="odd"><td><a href="mod_proxy.html#proxymaxforwards">ProxyMaxForwards <var>number</var></a></td><td> 10 </td><td>sv</td><td>E</td></tr><tr class="odd"><td class="descr" colspan="4">Maximium number of proxies that a request can be forwarded
+<tr class="odd"><td><a href="mod_proxy.html#proxymaxforwards">ProxyMaxForwards <var>number</var></a></td><td> -1 </td><td>sv</td><td>E</td></tr><tr class="odd"><td class="descr" colspan="4">Maximium number of proxies that a request can be forwarded
through</td></tr>
<tr><td><a href="mod_proxy.html#proxypass">ProxyPass [<var>path</var>] !|<var>url</var> [<var>key=value</var> <var>key=value</var> ...]]</a></td><td></td><td>svd</td><td>E</td></tr><tr><td class="descr" colspan="4">Maps remote servers into the local server URL-space</td></tr>
<tr class="odd"><td><a href="mod_proxy.html#proxypassmatch">ProxyPassMatch [<var>regex</var>] !|<var>url</var> [<var>key=value</var>
<dd><p><code class="module"><a href="./mod/mod_dbd.html">mod_dbd</a></code>, together with the apr_dbd framework,
brings direct SQL support to modules that need it. Supports
connection pooling in threaded MPMs.</p>
- <p><strong>Windows Users</strong> please note that this is not
- yet included in the standard windows build. If you try to use
- it on the Windows platform, please let us know how you get on.</p>
</dd>
</dl>
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