Fixed conversion of Lua String -> .NET byte [] + test

src/CheckType.cs

@@ -32,6 +32,7 @@ public CheckType(ObjectTranslator translator)
             _extractValues.Add(typeof(bool), GetAsBoolean);
             _extractValues.Add(typeof(string), GetAsString);
             _extractValues.Add(typeof(char[]), GetAsCharArray);
+            _extractValues.Add(typeof(byte[]), GetAsByteArray);
             _extractValues.Add(typeof(LuaFunction), GetAsFunction);
             _extractValues.Add(typeof(LuaTable), GetAsTable);
             _extractValues.Add(typeof(LuaUserData), GetAsUserdata);
@@ -113,7 +114,7 @@ internal ExtractValue CheckLuaType(LuaState luaState, int stackPos, Type paramTy
                 if (luatype == LuaType.Number)
                     return _extractValues[typeof(double)];
             }
-            bool netParamIsString = paramType == typeof(string) || paramType == typeof(char[]);
+            bool netParamIsString = paramType == typeof(string) || paramType == typeof(char[]) || paramType == typeof(byte[]);
 
             if (netParamIsNumeric)
             {
@@ -329,6 +330,15 @@ private object GetAsCharArray(LuaState luaState, int stackPos)
             return retVal.ToCharArray();
         }
 
+        private object GetAsByteArray(LuaState luaState, int stackPos)
+        {
+            if (!luaState.IsString(stackPos))
+                return null;
+
+            byte [] retVal = luaState.ToBuffer(stackPos, false);
+            return retVal;
+        }
+
         private object GetAsString(LuaState luaState, int stackPos)
         {
             if (!luaState.IsString(stackPos))

tests/src/LuaTests.cs

@@ -16,7 +16,7 @@
 using LuaFunction = NLua.LuaFunction;
 using System.Diagnostics;
 using System.Collections.Generic;
-using System.Collections;
+using System.Linq;
 
 // ReSharper disable StringLiteralTypo
 
@@ -2600,6 +2600,25 @@ public void CallDictionary()
             }
         }
 
+        [Test]
+        public void ByteArrayParameter()
+        {
+            using (var lua = new Lua())
+            {
+                lua["WriteBinary"] = (Action<byte[]>)WriteBinary;
+                lua.DoString(@"
+                        local value = string.char(1, 2, 3, 0x3f, 0x40, 0xff, 0xf3, 0x9f)
+                        WriteBinary (value);
+                ");
+            }
+        }
+
+        private void WriteBinary(byte [] buffer)
+        {
+            byte[] expected = { 1, 2, 3, 0x3f, 0x40, 0xff, 0xf3, 0x9f };
+            Assert.True(Enumerable.SequenceEqual(expected, buffer));
+        }
+
 
         static Lua m_lua;
     }