specified, the operating system will attempt to
drop membership on all valid interfaces.</p>
<h3><code>socket.getRecvBufferSize()</code><span><a class="mark" href="#dgram_socket_getrecvbuffersize" id="dgram_socket_getrecvbuffersize">#</a></span></h3>
<div class="api_metadata">
<span>Added in: v8.7.0</span>
</div>
<ul>
<li>Returns: <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type" class="type">&#x3C;number></a> the <code>SO_RCVBUF</code> socket receive buffer size 