From 252a50bb75cc54fa3b21b394de5921abe5a91af7 Mon Sep 17 00:00:00 2001
From: Cameron Gutman <aicommander@gmail.com>
Date: Wed, 28 Apr 2021 20:37:20 -0500
Subject: [PATCH] Disable WSAECONNRESET errors for UDP sockets on Windows

---
 src/PlatformSockets.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/PlatformSockets.c b/src/PlatformSockets.c
index e1e091c..a7da40f 100644
--- a/src/PlatformSockets.c
+++ b/src/PlatformSockets.c
@@ -10,6 +10,11 @@
 #define TCPv6_MSS 1220
 
 #if defined(LC_WINDOWS)
+
+#ifndef SIO_UDP_CONNRESET
+#define SIO_UDP_CONNRESET _WSAIOW(IOC_VENDOR, 12)
+#endif
+
 static HMODULE WlanApiLibraryHandle;
 static HANDLE WlanHandle;
 
@@ -246,12 +251,21 @@ SOCKET bindUdpSocket(int addrfamily, int bufferSize) {
         return INVALID_SOCKET;
     }
 
-#ifdef LC_DARWIN
+#if defined(LC_DARWIN)
     {
         // Disable SIGPIPE on iOS
         int val = 1;
         setsockopt(s, SOL_SOCKET, SO_NOSIGPIPE, (char*)&val, sizeof(val));
     }
+#elif defined(LC_WINDOWS)
+    {
+        // Disable WSAECONNRESET for UDP sockets on Windows
+        BOOL val = FALSE;
+        DWORD bytesReturned = 0;
+        if (WSAIoctl(s, SIO_UDP_CONNRESET, &val, sizeof(val), NULL, 0, &bytesReturned, NULL, NULL) != 0) {
+            Limelog("WSAIoctl(SIO_UDP_CONNRESET) failed: %d\n", LastSocketError());
+        }
+    }
 #endif
 
     // We start at the requested recv buffer value and step down until we find