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-rw-r--r--lib/kernel/doc/src/gen_udp.xml38
1 files changed, 38 insertions, 0 deletions
diff --git a/lib/kernel/doc/src/gen_udp.xml b/lib/kernel/doc/src/gen_udp.xml
index daa9b7d887..0b2cd3d765 100644
--- a/lib/kernel/doc/src/gen_udp.xml
+++ b/lib/kernel/doc/src/gen_udp.xml
@@ -86,6 +86,44 @@
<item>
<p>Set up the socket for IPv4.</p>
</item>
+
+ <tag><c>{multicast_if, Address}</c></tag>
+ <item>
+ <p>Set the local device for a multicast socket.</p>
+ </item>
+
+ <tag><c>{multicast_loop, true | false}</c></tag>
+ <item>
+ <p>
+ When <c>true</c> sent multicast packets will be looped back to the local
+ sockets.
+ </p>
+ </item>
+
+ <tag><c>{multicast_ttl, Integer}</c></tag>
+ <item>
+ <p>
+ The <c>multicast_ttl</c> option changes the time-to-live (TTL) for
+ outgoing multicast datagrams in order to control the scope of the
+ multicasts.
+ </p>
+ <p>
+ Datagrams with a TTL of 1 are not forwarded beyond the local
+ network.
+ <br />Default: 1
+ </p>
+ </item>
+
+ <tag><c>{add_membership, {MultiAddress, InterfaceAddress}}</c></tag>
+ <item>
+ <p>Join a multicast group. </p>
+ </item>
+
+ <tag><c>{drop_membership, {MultiAddress, InterfaceAddress}}</c></tag>
+ <item>
+ <p>Leave multicast group.</p>
+ </item>
+
<tag><c>Opt</c></tag>
<item>
<p>See