Add MTU option.

Source/Engine/Platform/Base/NetworkBase.h

@@ -76,6 +76,8 @@ enum class FLAXENGINE_API NetworkSocketOption
     NoDelay,
     /// <summary>Enables IPv6 communication only for TCP socket.</summary>
     IPv6Only,
+    /// <summary>Retrieve the current path MTU, the socket must be connected UDP/TCP.</summary>
+    Mtu
 };
 
 struct FLAXENGINE_API NetworkSocketState

Source/Engine/Platform/Win32/Win32Network.cpp

@@ -132,6 +132,7 @@ static void TranslateSockOptToNative(NetworkSocketOption option, int32* level, i
     SOCKOPT(NetworkSocketOption::Error, SOL_SOCKET, SO_ERROR)
     SOCKOPT(NetworkSocketOption::NoDelay, IPPROTO_TCP, TCP_NODELAY)
     SOCKOPT(NetworkSocketOption::IPv6Only, IPPROTO_IPV6, IPV6_V6ONLY)
+    SOCKOPT(NetworkSocketOption::Mtu, IPPROTO_IP , IP_MTU)
     }
 }