From 9a3bddef19a7fc6c863db04a1c23d7b9730a1214 Mon Sep 17 00:00:00 2001
From: Thulinma <jaron@vietors.com>
Date: Wed, 2 Oct 2019 11:54:40 +0200
Subject: [PATCH] Windows multicast socket fix

---
 lib/socket.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/socket.cpp b/lib/socket.cpp
index 1b1c6ace..733c969f 100644
--- a/lib/socket.cpp
+++ b/lib/socket.cpp
@@ -1766,6 +1766,11 @@ uint16_t Socket::UDPConnection::bind(int port, std::string iface, const std::str
       sockaddr_in *addr4 = (sockaddr_in *)(rp->ai_addr);
       // multicast has a "1110" bit prefix
       multicast = (((char *)&(addr4->sin_addr))[0] & 0xF0) == 0xE0;
+#ifdef __CYGWIN__
+      if (multicast){
+        ((sockaddr_in*)rp->ai_addr)->sin_addr.s_addr = htonl(INADDR_ANY);
+      }
+#endif
     }
     if (multicast){
       const int optval = 1;