. If not provided, request host header
will be used instead</p></td><td>No</td></tr><tr id=PluginConfig-max_peer_cache_size><td><code>max_peer_cache_size</code></td><td><code>int32</code></td><td><p>maximum size of the peer metadata cache.
A long lived proxy that connects with many transient peers can build up a
large cache. To turn off the cache, set this field to a negative value.</p></td><td>No</td></tr><tr id=PluginConfig-disable_host_header_fallback><td><code>disable_host_header_fallback</code></td><td