Made NoDelay configurable

Author: khellang

src/Microsoft.AspNet.Server.Kestrel/KestrelServerInformation.cs

@@ -15,7 +15,7 @@ public KestrelServerInformation(IConfiguration configuration)
         {
             Addresses = GetAddresses(configuration);
             ThreadCount = GetThreadCount(configuration);
-            NoDelay = true;
+            NoDelay = GetNoDelay(configuration);
         }
 
         public ICollection<string> Addresses { get; }
@@ -68,5 +68,23 @@ private static int GetThreadCount(IConfiguration configuration)
 
             return threadCount;
         }
+
+        private static bool GetNoDelay(IConfiguration configuration)
+        {
+            var noDelayString = configuration["kestrel.noDelay"];
+
+            if (string.IsNullOrEmpty(noDelayString))
+            {
+                return true;
+            }
+
+            bool noDelay;
+            if (bool.TryParse(noDelayString, out noDelay))
+            {
+                return noDelay;
+            }
+
+            return true;
+        }
     }
 }

test/Microsoft.AspNet.Server.KestrelTests/KestrelServerInformationTests.cs

@@ -62,6 +62,23 @@ public void SetAddressesUsingConfiguration()
             Assert.Equal(expected, information.Addresses);
         }
 
+        [Fact]
+        public void SetNoDelayUsingConfiguration()
+        {
+            var values = new Dictionary<string, string>
+            {
+                { "kestrel.noDelay", "false" }
+            };
+
+            var configuration = new ConfigurationBuilder()
+                .AddInMemoryCollection(values)
+                .Build();
+
+            var information = new KestrelServerInformation(configuration);
+
+            Assert.False(information.NoDelay);
+        }
+
         private static int Clamp(int value, int min, int max)
         {
             return value < min ? min : value > max ? max : value;