Fossil

<blockquote>
<b>clone</b><br>
<b>clone</b> <i>protocol-version sequence-number</i>
</blockquote>

<h4>3.5.1 Protocol 2</h4>

<p>The latest clients send a two-argument clone message with a
protocol version of "2".  (Future versions of Fossil might use larger
protocol version numbers.)  The sequence-number sent is the number
of artifacts received so far.  For the first clone message, the
sequence number if 0.  The server will respond by sending file
cards for some number of artifacts up to the maximum message size.

<p>The server will also send a single "clone_seqno" card to the client

<p>Older clients send a clone card with no argument.  The server responds
to a blank clone card by sending an "igot" card for every artifact in the
repository.  The client will then issue "gimme" cards to pull down all the
content it needs.

<p>The legacy protocol works well for smaller repositories (50MB with 50,000
artifacts) but is too slow and unwieldy for larger repositories.
The version 2 protocol is an effort to improve performance.  Further
performance improvements with higher-numbered clone protocols are
possible in future versions of Fossil.

<h3>3.6 Igot Cards</h3>

<p>An igot card can be sent from either client to server or from

that is configured on the Admin page of the [./webui.wiki | web-interface].
The value of the configuration item is returned to the client using a
"config" card.

<p>If the configuration-name begins with "@", that refers to a class of
values instead of a single value.  The content of these configuration items
is returned in a "config" card that contains pure SQL text that is 
intended to be evaluated by the client.

<p>The @user and @concealed configuration items contain sensitive information
and are ignored for clients without sufficient privilege.

<h3>3.10 Configuration Cards</h3>

<p>A "config" card is used to send configuration information from client
to server (in response to a "fossil configuration push" command) or
from server to client (in response to a "fossil configuration pull" or
"fossil clone" command).  The format is as follows:

<blockquote>
<b>config</b> <i>configuration-name size</i> <b>\n</b> <i>content</i>
</blockquote>

<p>The server will only accept a config card if the user has
"Admin" privilege.  A client will only accept a config card if
it had sent a corresponding reqconfig card in its request.

<p>The content of the configuration item is used to overwrite the
corresponding configuration data in the receiver.

<h3>3.11 Error Cards</h3>

<p>If the server discovers anything wrong with a request, it generates