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<?xml version="1.0"?>
<page xmlns="http://projectmallard.org/1.0/"
type="topic"
style="function"
xmlns:api="http://projectmallard.org/experimental/api/"
xmlns:ui="http://projectmallard.org/experimental/ui/"
id="mongoc_client_set_write_concern">
<info>
<link type="guide" xref="mongoc_client_t" group="function"/>
</info>
<title>mongoc_client_set_write_concern()</title>
<section id="synopsis">
<title>Synopsis</title>
<synopsis><code mime="text/x-csrc"><![CDATA[void
mongoc_client_set_write_concern (mongoc_client_t *client,
const mongoc_write_concern_t *write_concern);]]></code></synopsis>
<p>Sets the write concern for the client. This only affects future operations, collections, and databases inheriting from <code>client</code>.</p>
<p>The default write concern is MONGOC_WRITE_CONCERN_W_DEFAULT: the driver blocks awaiting basic acknowledgment of write operations from MongoDB. This is the correct write concern for the great majority of applications.</p>
<p>It is a programming error to call this function on a client from a <code xref="mongoc_client_pool_t">mongoc_client_pool_t</code>. For pooled clients, set the write concern with the <link xref="mongoc_uri_t#write-concern-options">MongoDB URI</link> instead.</p>
</section>
<section id="parameters">
<title>Parameters</title>
<table>
<tr><td><p>client</p></td><td><p>A <code xref="mongoc_client_t">mongoc_client_t</code>.</p></td></tr>
<tr><td><p>write_concern</p></td><td><p>A <code xref="mongoc_write_concern_t">mongoc_write_concern_t</code>.</p></td></tr>
</table>
</section>
</page>
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