BSD: Allow use of DontWait flag in Receive (#3462)

Ryujinx.HLE/HOS/Services/Sockets/Bsd/Impl/ManagedSocket.cs

@@ -184,18 +184,35 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd
 
         public LinuxError Receive(out int receiveSize, Span<byte> buffer, BsdSocketFlags flags)
         {
+            LinuxError result;
+
+            bool shouldBlockAfterOperation = false;
+
             try
             {
+                if (Blocking && flags.HasFlag(BsdSocketFlags.DontWait))
+                {
+                    Blocking = false;
+                    shouldBlockAfterOperation = true;
+                }
+
                 receiveSize = Socket.Receive(buffer, ConvertBsdSocketFlags(flags));
 
-                return LinuxError.SUCCESS;
+                result = LinuxError.SUCCESS;
             }
             catch (SocketException exception)
             {
                 receiveSize = -1;
 
-                return WinSockHelper.ConvertError((WsaError)exception.ErrorCode);
+                result = WinSockHelper.ConvertError((WsaError)exception.ErrorCode);
+            }
+
+            if (shouldBlockAfterOperation)
+            {
+                Blocking = true;
             }
+
+            return result;
         }
 
         public LinuxError ReceiveFrom(out int receiveSize, Span<byte> buffer, int size, BsdSocketFlags flags, out IPEndPoint remoteEndPoint)