closed or the process terminates, so most apps will
never have reason to call this.</p>
<p>If <code>multicastInterface</code> is not specified, the operating system will attempt to
drop membership on all valid interfaces.</p>
<h3><code>socket.dropSourceSpecificMembership(sourceAddress, groupAddress[, multicastInterface])</code><span><a class="mark" href="#dgram_socket_dropsourcespecificmembership_sourceaddress_groupaddress_multicastinterface" id="dgram_socket_dropsourcespecificmembership_sourceaddress_group