From 6519a35799774364b8a2a731ac8106c19048ee08 Mon Sep 17 00:00:00 2001
From: Me No Dev <me-no-dev@users.noreply.github.com>
Date: Tue, 11 Apr 2017 00:08:18 +0300
Subject: [PATCH] Fix WifiUDP::beginMulticastPacket()

Fixes: https://github.com/espressif/arduino-esp32/issues/304

Thanks @jliegner :)
---
 libraries/WiFi/src/WiFiUdp.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libraries/WiFi/src/WiFiUdp.cpp b/libraries/WiFi/src/WiFiUdp.cpp
index 121602a7..4e6db72a 100644
--- a/libraries/WiFi/src/WiFiUdp.cpp
+++ b/libraries/WiFi/src/WiFiUdp.cpp
@@ -123,8 +123,8 @@ void WiFiUDP::stop(){
 int WiFiUDP::beginMulticastPacket(){
   if(!server_port || multicast_ip == IPAddress(INADDR_ANY))
     return 0;
-  remote_ip = server_port;
-  remote_port = multicast_ip;
+  remote_ip = multicast_ip;
+  remote_port = server_port;
   return beginPacket();
 }