Using 'nameof' operator instead of magic strings

Fix back-end field issue

Fix back-end field issue

src/Microsoft.AspNet.Owin/WebSockets/WebSocketAdapter.cs

@@ -134,7 +134,7 @@ namespace Microsoft.AspNet.Owin
                     _webSocket.Abort();
                     break;
                 default:
-                    throw new ArgumentOutOfRangeException("state", _webSocket.State, string.Empty);
+                    throw new ArgumentOutOfRangeException(nameof(_webSocket.State), _webSocket.State, string.Empty);
             }
         }
 

src/Microsoft.Net.Http.Headers/CacheControlHeaderValue.cs

@@ -597,7 +597,7 @@ namespace Microsoft.Net.Http.Headers
 
         private static void CheckIsValidToken(string item)
         {
-            HeaderUtilities.CheckValidToken(item, "item");
+            HeaderUtilities.CheckValidToken(item, nameof(item));
         }
     }
 }

src/Microsoft.Net.Http.Headers/ContentRangeHeaderValue.cs

@@ -82,7 +82,7 @@ namespace Microsoft.Net.Http.Headers
             get { return _unit; }
             set
             {
-                HeaderUtilities.CheckValidToken(value, "value");
+                HeaderUtilities.CheckValidToken(value, nameof(value));
                 _unit = value;
             }
         }

src/Microsoft.Net.Http.Headers/CookieHeaderValue.cs

@@ -39,7 +39,7 @@ namespace Microsoft.Net.Http.Headers
             get { return _name; }
             set
             {
-                CheckNameFormat(value, "name");
+                CheckNameFormat(value, nameof(value));
                 _name = value;
             }
         }
@@ -49,7 +49,7 @@ namespace Microsoft.Net.Http.Headers
             get { return _value; }
             set
             {
-                CheckValueFormat(value, "value");
+                CheckValueFormat(value, nameof(value));
                 _value = value;
             }
         }

src/Microsoft.Net.Http.Headers/NameValueHeaderValue.cs

@@ -363,7 +363,7 @@ namespace Microsoft.Net.Http.Headers
 
         private static void CheckNameValueFormat(string name, string value)
         {
-            HeaderUtilities.CheckValidToken(name, "name");
+            HeaderUtilities.CheckValidToken(name, nameof(name));
             CheckValueFormat(value);
         }
 

src/Microsoft.Net.Http.Headers/RangeHeaderValue.cs

@@ -33,7 +33,7 @@ namespace Microsoft.Net.Http.Headers
             get { return _unit; }
             set
             {
-                HeaderUtilities.CheckValidToken(value, "value");
+                HeaderUtilities.CheckValidToken(value, nameof(value));
                 _unit = value;
             }
         }

src/Microsoft.Net.Http.Headers/SetCookieHeaderValue.cs

@@ -49,7 +49,7 @@ namespace Microsoft.Net.Http.Headers
             get { return _name; }
             set
             {
-                CookieHeaderValue.CheckNameFormat(value, "name");
+                CookieHeaderValue.CheckNameFormat(value, nameof(value));
                 _name = value;
             }
         }
@@ -59,7 +59,7 @@ namespace Microsoft.Net.Http.Headers
             get { return _value; }
             set
             {
-                CookieHeaderValue.CheckValueFormat(value, "value");
+                CookieHeaderValue.CheckValueFormat(value, nameof(value));
                 _value = value;
             }
         }

src/Microsoft.Net.Http.Headers/StringWithQualityHeaderValue.cs

@@ -25,14 +25,14 @@ namespace Microsoft.Net.Http.Headers
 
         public StringWithQualityHeaderValue(string value)
         {
-            HeaderUtilities.CheckValidToken(value, "value");
+            HeaderUtilities.CheckValidToken(value, nameof(value));
 
             _value = value;
         }
 
         public StringWithQualityHeaderValue(string value, double quality)
         {
-            HeaderUtilities.CheckValidToken(value, "value");
+            HeaderUtilities.CheckValidToken(value, nameof(value));
 
             if ((quality < 0) || (quality > 1))
             {