diff --git a/src/Kestrel.Core/Internal/Http2/HPack/StaticTable.cs b/src/Kestrel.Core/Internal/Http2/HPack/StaticTable.cs
index c28a78ff8d..0b8b533bb4 100644
--- a/src/Kestrel.Core/Internal/Http2/HPack/StaticTable.cs
+++ b/src/Kestrel.Core/Internal/Http2/HPack/StaticTable.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Text;
+using Microsoft.Net.Http.Headers;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2.HPack
 {
@@ -35,20 +36,20 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2.HPack
 
         private readonly HeaderField[] _staticTable = new HeaderField[]
         {
-            CreateHeaderField(":authority", ""),
-            CreateHeaderField(":method", "GET"),
-            CreateHeaderField(":method", "POST"),
-            CreateHeaderField(":path", "/"),
-            CreateHeaderField(":path", "/index.html"),
-            CreateHeaderField(":scheme", "http"),
-            CreateHeaderField(":scheme", "https"),
-            CreateHeaderField(":status", "200"),
-            CreateHeaderField(":status", "204"),
-            CreateHeaderField(":status", "206"),
-            CreateHeaderField(":status", "304"),
-            CreateHeaderField(":status", "400"),
-            CreateHeaderField(":status", "404"),
-            CreateHeaderField(":status", "500"),
+            CreateHeaderField(HeaderNames.Authority, ""),
+            CreateHeaderField(HeaderNames.Method, "GET"),
+            CreateHeaderField(HeaderNames.Method, "POST"),
+            CreateHeaderField(HeaderNames.Path, "/"),
+            CreateHeaderField(HeaderNames.Path, "/index.html"),
+            CreateHeaderField(HeaderNames.Scheme, "http"),
+            CreateHeaderField(HeaderNames.Scheme, "https"),
+            CreateHeaderField(HeaderNames.Status, "200"),
+            CreateHeaderField(HeaderNames.Status, "204"),
+            CreateHeaderField(HeaderNames.Status, "206"),
+            CreateHeaderField(HeaderNames.Status, "304"),
+            CreateHeaderField(HeaderNames.Status, "400"),
+            CreateHeaderField(HeaderNames.Status, "404"),
+            CreateHeaderField(HeaderNames.Status, "500"),
             CreateHeaderField("accept-charset", ""),
             CreateHeaderField("accept-encoding", "gzip, deflate"),
             CreateHeaderField("accept-language", ""),
diff --git a/src/Kestrel.Core/Internal/Http2/Http2Connection.cs b/src/Kestrel.Core/Internal/Http2/Http2Connection.cs
index f458436662..58646cca12 100644
--- a/src/Kestrel.Core/Internal/Http2/Http2Connection.cs
+++ b/src/Kestrel.Core/Internal/Http2/Http2Connection.cs
@@ -15,6 +15,7 @@ using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http;
 using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2.HPack;
 using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Infrastructure;
 using Microsoft.Extensions.Logging;
+using Microsoft.Net.Http.Headers;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
 {
@@ -45,11 +46,11 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
         private static readonly PseudoHeaderFields _mandatoryRequestPseudoHeaderFields =
             PseudoHeaderFields.Method | PseudoHeaderFields.Path | PseudoHeaderFields.Scheme;
 
-        private static readonly byte[] _authorityBytes = Encoding.ASCII.GetBytes("authority");
-        private static readonly byte[] _methodBytes = Encoding.ASCII.GetBytes("method");
-        private static readonly byte[] _pathBytes = Encoding.ASCII.GetBytes("path");
-        private static readonly byte[] _schemeBytes = Encoding.ASCII.GetBytes("scheme");
-        private static readonly byte[] _statusBytes = Encoding.ASCII.GetBytes("status");
+        private static readonly byte[] _authorityBytes = Encoding.ASCII.GetBytes(HeaderNames.Authority);
+        private static readonly byte[] _methodBytes = Encoding.ASCII.GetBytes(HeaderNames.Method);
+        private static readonly byte[] _pathBytes = Encoding.ASCII.GetBytes(HeaderNames.Path);
+        private static readonly byte[] _schemeBytes = Encoding.ASCII.GetBytes(HeaderNames.Scheme);
+        private static readonly byte[] _statusBytes = Encoding.ASCII.GetBytes(HeaderNames.Status);
         private static readonly byte[] _connectionBytes = Encoding.ASCII.GetBytes("connection");
         private static readonly byte[] _teBytes = Encoding.ASCII.GetBytes("te");
         private static readonly byte[] _trailersBytes = Encoding.ASCII.GetBytes("trailers");
@@ -803,9 +804,6 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
                 return false;
             }
 
-            // Skip ':'
-            name = name.Slice(1);
-
             if (name.SequenceEqual(_pathBytes))
             {
                 headerField = PseudoHeaderFields.Path;
diff --git a/src/Kestrel.Core/Internal/Http2/Http2Stream.cs b/src/Kestrel.Core/Internal/Http2/Http2Stream.cs
index 0234879a37..702cd636d5 100644
--- a/src/Kestrel.Core/Internal/Http2/Http2Stream.cs
+++ b/src/Kestrel.Core/Internal/Http2/Http2Stream.cs
@@ -57,15 +57,15 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
             // do the reading from a pipeline, nor do we use endConnection to report connection-level errors.
 
             _httpVersion = Http.HttpVersion.Http2;
-            var methodText = RequestHeaders[":method"];
+            var methodText = RequestHeaders[HeaderNames.Method];
             Method = HttpUtilities.GetKnownMethod(methodText);
             _methodText = methodText;
-            if (!string.Equals(RequestHeaders[":scheme"], Scheme, StringComparison.OrdinalIgnoreCase))
+            if (!string.Equals(RequestHeaders[HeaderNames.Scheme], Scheme, StringComparison.OrdinalIgnoreCase))
             {
                 BadHttpRequestException.Throw(RequestRejectionReason.InvalidRequestLine);
             }
 
-            var path = RequestHeaders[":path"].ToString();
+            var path = RequestHeaders[HeaderNames.Path].ToString();
             var queryIndex = path.IndexOf('?');
 
             Path = queryIndex == -1 ? path : path.Substring(0, queryIndex);
@@ -78,7 +78,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
             // request message that contains more than one Host header field or a
             // Host header field with an invalid field-value.
 
-            var authority = RequestHeaders[":authority"];
+            var authority = RequestHeaders[HeaderNames.Authority];
             var host = HttpRequestHeaders.HeaderHost;
             if (authority.Count > 0)
             {
diff --git a/test/Kestrel.Core.Tests/HPackDecoderTests.cs b/test/Kestrel.Core.Tests/HPackDecoderTests.cs
index a20c0be120..28878c6864 100644
--- a/test/Kestrel.Core.Tests/HPackDecoderTests.cs
+++ b/test/Kestrel.Core.Tests/HPackDecoderTests.cs
@@ -8,6 +8,7 @@ using System.Text;
 using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http;
 using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2.HPack;
 using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Infrastructure;
+using Microsoft.Net.Http.Headers;
 using Xunit;
 
 namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
@@ -104,7 +105,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
         public void DecodesIndexedHeaderField_StaticTable()
         {
             _decoder.Decode(_indexedHeaderStatic, endHeaders: true, handler: this);
-            Assert.Equal("GET", _decodedHeaders[":method"]);
+            Assert.Equal("GET", _decodedHeaders[HeaderNames.Method]);
         }
 
         [Fact]
diff --git a/test/Kestrel.Core.Tests/Http2ConnectionTests.cs b/test/Kestrel.Core.Tests/Http2ConnectionTests.cs
index 7afba1e572..549ec6a007 100644
--- a/test/Kestrel.Core.Tests/Http2ConnectionTests.cs
+++ b/test/Kestrel.Core.Tests/Http2ConnectionTests.cs
@@ -31,27 +31,27 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
 
         private static readonly IEnumerable<KeyValuePair<string, string>> _postRequestHeaders = new[]
         {
-            new KeyValuePair<string, string>(":method", "POST"),
-            new KeyValuePair<string, string>(":path", "/"),
-            new KeyValuePair<string, string>(":scheme", "http"),
-            new KeyValuePair<string, string>(":authority", "localhost:80"),
+            new KeyValuePair<string, string>(HeaderNames.Method, "POST"),
+            new KeyValuePair<string, string>(HeaderNames.Path, "/"),
+            new KeyValuePair<string, string>(HeaderNames.Scheme, "http"),
+            new KeyValuePair<string, string>(HeaderNames.Authority, "localhost:80"),
         };
 
         private static readonly IEnumerable<KeyValuePair<string, string>> _expectContinueRequestHeaders = new[]
         {
-            new KeyValuePair<string, string>(":method", "POST"),
-            new KeyValuePair<string, string>(":path", "/"),
-            new KeyValuePair<string, string>(":authority", "127.0.0.1"),
-            new KeyValuePair<string, string>(":scheme", "http"),
+            new KeyValuePair<string, string>(HeaderNames.Method, "POST"),
+            new KeyValuePair<string, string>(HeaderNames.Path, "/"),
+            new KeyValuePair<string, string>(HeaderNames.Authority, "127.0.0.1"),
+            new KeyValuePair<string, string>(HeaderNames.Scheme, "http"),
             new KeyValuePair<string, string>("expect", "100-continue"),
         };
 
         private static readonly IEnumerable<KeyValuePair<string, string>> _browserRequestHeaders = new[]
         {
-            new KeyValuePair<string, string>(":method", "GET"),
-            new KeyValuePair<string, string>(":path", "/"),
-            new KeyValuePair<string, string>(":scheme", "http"),
-            new KeyValuePair<string, string>(":authority", "localhost:80"),
+            new KeyValuePair<string, string>(HeaderNames.Method, "GET"),
+            new KeyValuePair<string, string>(HeaderNames.Path, "/"),
+            new KeyValuePair<string, string>(HeaderNames.Scheme, "http"),
+            new KeyValuePair<string, string>(HeaderNames.Authority, "localhost:80"),
             new KeyValuePair<string, string>("user-agent", "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:54.0) Gecko/20100101 Firefox/54.0"),
             new KeyValuePair<string, string>("accept", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"),
             new KeyValuePair<string, string>("accept-language", "en-US,en;q=0.5"),
@@ -67,10 +67,10 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
 
         private static readonly IEnumerable<KeyValuePair<string, string>> _oneContinuationRequestHeaders = new[]
         {
-            new KeyValuePair<string, string>(":method", "GET"),
-            new KeyValuePair<string, string>(":path", "/"),
-            new KeyValuePair<string, string>(":scheme", "http"),
-            new KeyValuePair<string, string>(":authority", "localhost:80"),
+            new KeyValuePair<string, string>(HeaderNames.Method, "GET"),
+            new KeyValuePair<string, string>(HeaderNames.Path, "/"),
+            new KeyValuePair<string, string>(HeaderNames.Scheme, "http"),
+            new KeyValuePair<string, string>(HeaderNames.Authority, "localhost:80"),
             new KeyValuePair<string, string>("a", _largeHeaderValue),
             new KeyValuePair<string, string>("b", _largeHeaderValue),
             new KeyValuePair<string, string>("c", _largeHeaderValue),
@@ -79,10 +79,10 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
 
         private static readonly IEnumerable<KeyValuePair<string, string>> _twoContinuationsRequestHeaders = new[]
         {
-            new KeyValuePair<string, string>(":method", "GET"),
-            new KeyValuePair<string, string>(":path", "/"),
-            new KeyValuePair<string, string>(":scheme", "http"),
-            new KeyValuePair<string, string>(":authority", "localhost:80"),
+            new KeyValuePair<string, string>(HeaderNames.Method, "GET"),
+            new KeyValuePair<string, string>(HeaderNames.Path, "/"),
+            new KeyValuePair<string, string>(HeaderNames.Scheme, "http"),
+            new KeyValuePair<string, string>(HeaderNames.Authority, "localhost:80"),
             new KeyValuePair<string, string>("a", _largeHeaderValue),
             new KeyValuePair<string, string>("b", _largeHeaderValue),
             new KeyValuePair<string, string>("c", _largeHeaderValue),
@@ -1078,9 +1078,9 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
         {
             var headers = new[]
             {
-                new KeyValuePair<string, string>(":method", "GET"),
-                new KeyValuePair<string, string>(":path", "/"),
-                new KeyValuePair<string, string>(":scheme", "http"),
+                new KeyValuePair<string, string>(HeaderNames.Method, "GET"),
+                new KeyValuePair<string, string>(HeaderNames.Path, "/"),
+                new KeyValuePair<string, string>(HeaderNames.Scheme, "http"),
                 new KeyValuePair<string, string>(":unknown", "0"),
             };
 
@@ -1092,10 +1092,10 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
         {
             var headers = new[]
             {
-                new KeyValuePair<string, string>(":method", "GET"),
-                new KeyValuePair<string, string>(":path", "/"),
-                new KeyValuePair<string, string>(":scheme", "http"),
-                new KeyValuePair<string, string>(":status", "200"),
+                new KeyValuePair<string, string>(HeaderNames.Method, "GET"),
+                new KeyValuePair<string, string>(HeaderNames.Path, "/"),
+                new KeyValuePair<string, string>(HeaderNames.Scheme, "http"),
+                new KeyValuePair<string, string>(HeaderNames.Status, "200"),
             };
 
             return HEADERS_Received_InvalidHeaderFields_StreamError(headers, expectedErrorMessage: CoreStrings.Http2ErrorResponsePseudoHeaderField);
@@ -1167,9 +1167,9 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
         {
             var headers = new[]
             {
-                new KeyValuePair<string, string>(":method", "GET"),
-                new KeyValuePair<string, string>(":path", "/"),
-                new KeyValuePair<string, string>(":scheme", "http"),
+                new KeyValuePair<string, string>(HeaderNames.Method, "GET"),
+                new KeyValuePair<string, string>(HeaderNames.Path, "/"),
+                new KeyValuePair<string, string>(HeaderNames.Scheme, "http"),
                 new KeyValuePair<string, string>("connection", "keep-alive")
             };
 
@@ -1181,9 +1181,9 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
         {
             var headers = new[]
             {
-                new KeyValuePair<string, string>(":method", "GET"),
-                new KeyValuePair<string, string>(":path", "/"),
-                new KeyValuePair<string, string>(":scheme", "http"),
+                new KeyValuePair<string, string>(HeaderNames.Method, "GET"),
+                new KeyValuePair<string, string>(HeaderNames.Path, "/"),
+                new KeyValuePair<string, string>(HeaderNames.Scheme, "http"),
                 new KeyValuePair<string, string>("te", "trailers, deflate")
             };
 
@@ -1195,9 +1195,9 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
         {
             var headers = new[]
             {
-                new KeyValuePair<string, string>(":method", "GET"),
-                new KeyValuePair<string, string>(":path", "/"),
-                new KeyValuePair<string, string>(":scheme", "http"),
+                new KeyValuePair<string, string>(HeaderNames.Method, "GET"),
+                new KeyValuePair<string, string>(HeaderNames.Path, "/"),
+                new KeyValuePair<string, string>(HeaderNames.Scheme, "http"),
                 new KeyValuePair<string, string>("te", "trailers")
             };
 
@@ -1222,10 +1222,10 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
         {
             var headers = new[]
             {
-                new KeyValuePair<string, string>(":method", "GET"),
-                new KeyValuePair<string, string>(":path", "/"),
-                new KeyValuePair<string, string>(":scheme", "http"),
-                new KeyValuePair<string, string>(":authority", "local=host:80"),
+                new KeyValuePair<string, string>(HeaderNames.Method, "GET"),
+                new KeyValuePair<string, string>(HeaderNames.Path, "/"),
+                new KeyValuePair<string, string>(HeaderNames.Scheme, "http"),
+                new KeyValuePair<string, string>(HeaderNames.Authority, "local=host:80"),
             };
             await InitializeConnectionAsync(_noopApplication);
 
@@ -1246,7 +1246,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
 
             Assert.Equal(3, _decodedHeaders.Count);
             Assert.Contains("date", _decodedHeaders.Keys, StringComparer.OrdinalIgnoreCase);
-            Assert.Equal("400", _decodedHeaders[":status"]);
+            Assert.Equal("400", _decodedHeaders[HeaderNames.Status]);
             Assert.Equal("0", _decodedHeaders["content-length"]);
         }
 
@@ -1255,9 +1255,9 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
         {
             var headers = new[]
             {
-                new KeyValuePair<string, string>(":method", "GET"),
-                new KeyValuePair<string, string>(":path", "/"),
-                new KeyValuePair<string, string>(":scheme", "http"),
+                new KeyValuePair<string, string>(HeaderNames.Method, "GET"),
+                new KeyValuePair<string, string>(HeaderNames.Path, "/"),
+                new KeyValuePair<string, string>(HeaderNames.Scheme, "http"),
             };
             await InitializeConnectionAsync(_noopApplication);
 
@@ -1278,7 +1278,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
 
             Assert.Equal(3, _decodedHeaders.Count);
             Assert.Contains("date", _decodedHeaders.Keys, StringComparer.OrdinalIgnoreCase);
-            Assert.Equal("400", _decodedHeaders[":status"]);
+            Assert.Equal("400", _decodedHeaders[HeaderNames.Status]);
             Assert.Equal("0", _decodedHeaders["content-length"]);
         }
 
@@ -1287,9 +1287,9 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
         {
             var headers = new[]
             {
-                new KeyValuePair<string, string>(":method", "GET"),
-                new KeyValuePair<string, string>(":path", "/"),
-                new KeyValuePair<string, string>(":scheme", "http"),
+                new KeyValuePair<string, string>(HeaderNames.Method, "GET"),
+                new KeyValuePair<string, string>(HeaderNames.Path, "/"),
+                new KeyValuePair<string, string>(HeaderNames.Scheme, "http"),
                 new KeyValuePair<string, string>("Host", "host1"),
                 new KeyValuePair<string, string>("Host", "host2"),
             };
@@ -1312,7 +1312,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
 
             Assert.Equal(3, _decodedHeaders.Count);
             Assert.Contains("date", _decodedHeaders.Keys, StringComparer.OrdinalIgnoreCase);
-            Assert.Equal("400", _decodedHeaders[":status"]);
+            Assert.Equal("400", _decodedHeaders[HeaderNames.Status]);
             Assert.Equal("0", _decodedHeaders["content-length"]);
         }
 
@@ -1321,10 +1321,10 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
         {
             var headers = new[]
             {
-                new KeyValuePair<string, string>(":method", "GET"),
-                new KeyValuePair<string, string>(":path", "/"),
-                new KeyValuePair<string, string>(":scheme", "http"),
-                new KeyValuePair<string, string>(":authority", ""),
+                new KeyValuePair<string, string>(HeaderNames.Method, "GET"),
+                new KeyValuePair<string, string>(HeaderNames.Path, "/"),
+                new KeyValuePair<string, string>(HeaderNames.Scheme, "http"),
+                new KeyValuePair<string, string>(HeaderNames.Authority, ""),
             };
             await InitializeConnectionAsync(_noopApplication);
 
@@ -1345,7 +1345,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
 
             Assert.Equal(3, _decodedHeaders.Count);
             Assert.Contains("date", _decodedHeaders.Keys, StringComparer.OrdinalIgnoreCase);
-            Assert.Equal("200", _decodedHeaders[":status"]);
+            Assert.Equal("200", _decodedHeaders[HeaderNames.Status]);
             Assert.Equal("0", _decodedHeaders["content-length"]);
         }
 
@@ -1354,10 +1354,10 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
         {
             var headers = new[]
             {
-                new KeyValuePair<string, string>(":method", "GET"),
-                new KeyValuePair<string, string>(":path", "/"),
-                new KeyValuePair<string, string>(":scheme", "http"),
-                new KeyValuePair<string, string>(":authority", ""),
+                new KeyValuePair<string, string>(HeaderNames.Method, "GET"),
+                new KeyValuePair<string, string>(HeaderNames.Path, "/"),
+                new KeyValuePair<string, string>(HeaderNames.Scheme, "http"),
+                new KeyValuePair<string, string>(HeaderNames.Authority, ""),
                 new KeyValuePair<string, string>("Host", "abc"),
             };
             await InitializeConnectionAsync(_echoHost);
@@ -1379,7 +1379,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
 
             Assert.Equal(4, _decodedHeaders.Count);
             Assert.Contains("date", _decodedHeaders.Keys, StringComparer.OrdinalIgnoreCase);
-            Assert.Equal("200", _decodedHeaders[":status"]);
+            Assert.Equal("200", _decodedHeaders[HeaderNames.Status]);
             Assert.Equal("0", _decodedHeaders[HeaderNames.ContentLength]);
             Assert.Equal("", _decodedHeaders[HeaderNames.Host]);
         }
@@ -1389,10 +1389,10 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
         {
             var headers = new[]
             {
-                new KeyValuePair<string, string>(":method", "GET"),
-                new KeyValuePair<string, string>(":path", "/"),
-                new KeyValuePair<string, string>(":scheme", "http"),
-                new KeyValuePair<string, string>(":authority", "def"),
+                new KeyValuePair<string, string>(HeaderNames.Method, "GET"),
+                new KeyValuePair<string, string>(HeaderNames.Path, "/"),
+                new KeyValuePair<string, string>(HeaderNames.Scheme, "http"),
+                new KeyValuePair<string, string>(HeaderNames.Authority, "def"),
                 new KeyValuePair<string, string>("Host", "abc"),
             };
             await InitializeConnectionAsync(_echoHost);
@@ -1414,7 +1414,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
 
             Assert.Equal(4, _decodedHeaders.Count);
             Assert.Contains("date", _decodedHeaders.Keys, StringComparer.OrdinalIgnoreCase);
-            Assert.Equal("200", _decodedHeaders[":status"]);
+            Assert.Equal("200", _decodedHeaders[HeaderNames.Status]);
             Assert.Equal("0", _decodedHeaders[HeaderNames.ContentLength]);
             Assert.Equal("def", _decodedHeaders[HeaderNames.Host]);
         }
@@ -1424,9 +1424,9 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
         {
             var headers = new[]
             {
-                new KeyValuePair<string, string>(":method", "GET"),
-                new KeyValuePair<string, string>(":path", "/"),
-                new KeyValuePair<string, string>(":scheme", "http"),
+                new KeyValuePair<string, string>(HeaderNames.Method, "GET"),
+                new KeyValuePair<string, string>(HeaderNames.Path, "/"),
+                new KeyValuePair<string, string>(HeaderNames.Scheme, "http"),
                 new KeyValuePair<string, string>("Host", "abc"),
             };
             await InitializeConnectionAsync(_echoHost);
@@ -1448,7 +1448,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
 
             Assert.Equal(4, _decodedHeaders.Count);
             Assert.Contains("date", _decodedHeaders.Keys, StringComparer.OrdinalIgnoreCase);
-            Assert.Equal("200", _decodedHeaders[":status"]);
+            Assert.Equal("200", _decodedHeaders[HeaderNames.Status]);
             Assert.Equal("0", _decodedHeaders[HeaderNames.ContentLength]);
             Assert.Equal("abc", _decodedHeaders[HeaderNames.Host]);
         }
@@ -1458,10 +1458,10 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
         {
             var headers = new[]
             {
-                new KeyValuePair<string, string>(":method", "GET"),
-                new KeyValuePair<string, string>(":path", "/"),
-                new KeyValuePair<string, string>(":scheme", "http"),
-                new KeyValuePair<string, string>(":authority", "def"),
+                new KeyValuePair<string, string>(HeaderNames.Method, "GET"),
+                new KeyValuePair<string, string>(HeaderNames.Path, "/"),
+                new KeyValuePair<string, string>(HeaderNames.Scheme, "http"),
+                new KeyValuePair<string, string>(HeaderNames.Authority, "def"),
                 new KeyValuePair<string, string>("Host", "a=bc"),
             };
             await InitializeConnectionAsync(_echoHost);
@@ -1483,7 +1483,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
 
             Assert.Equal(4, _decodedHeaders.Count);
             Assert.Contains("date", _decodedHeaders.Keys, StringComparer.OrdinalIgnoreCase);
-            Assert.Equal("200", _decodedHeaders[":status"]);
+            Assert.Equal("200", _decodedHeaders[HeaderNames.Status]);
             Assert.Equal("0", _decodedHeaders[HeaderNames.ContentLength]);
             Assert.Equal("def", _decodedHeaders[HeaderNames.Host]);
         }
@@ -1493,10 +1493,10 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
         {
             var headers = new[]
             {
-                new KeyValuePair<string, string>(":method", "GET"),
-                new KeyValuePair<string, string>(":path", "/"),
-                new KeyValuePair<string, string>(":scheme", "http"),
-                new KeyValuePair<string, string>(":authority", "d=ef"),
+                new KeyValuePair<string, string>(HeaderNames.Method, "GET"),
+                new KeyValuePair<string, string>(HeaderNames.Path, "/"),
+                new KeyValuePair<string, string>(HeaderNames.Scheme, "http"),
+                new KeyValuePair<string, string>(HeaderNames.Authority, "d=ef"),
                 new KeyValuePair<string, string>("Host", "abc"),
             };
             await InitializeConnectionAsync(_echoHost);
@@ -1518,7 +1518,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
 
             Assert.Equal(3, _decodedHeaders.Count);
             Assert.Contains("date", _decodedHeaders.Keys, StringComparer.OrdinalIgnoreCase);
-            Assert.Equal("400", _decodedHeaders[":status"]);
+            Assert.Equal("400", _decodedHeaders[HeaderNames.Status]);
             Assert.Equal("0", _decodedHeaders[HeaderNames.ContentLength]);
         }
 
@@ -2242,7 +2242,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
 
             Assert.Equal(11, _decodedHeaders.Count);
             Assert.Contains("date", _decodedHeaders.Keys, StringComparer.OrdinalIgnoreCase);
-            Assert.Equal("200", _decodedHeaders[":status"]);
+            Assert.Equal("200", _decodedHeaders[HeaderNames.Status]);
             Assert.Equal("0", _decodedHeaders["content-length"]);
             Assert.Equal(_largeHeaderValue, _decodedHeaders["a"]);
             Assert.Equal(_largeHeaderValue, _decodedHeaders["b"]);
@@ -2968,10 +2968,10 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
                 var data = new TheoryData<IEnumerable<KeyValuePair<string, string>>>();
                 var requestHeaders = new[]
                 {
-                    new KeyValuePair<string, string>(":method", "GET"),
-                    new KeyValuePair<string, string>(":path", "/"),
-                    new KeyValuePair<string, string>(":authority", "127.0.0.1"),
-                    new KeyValuePair<string, string>(":scheme", "http"),
+                    new KeyValuePair<string, string>(HeaderNames.Method, "GET"),
+                    new KeyValuePair<string, string>(HeaderNames.Path, "/"),
+                    new KeyValuePair<string, string>(HeaderNames.Authority, "127.0.0.1"),
+                    new KeyValuePair<string, string>(HeaderNames.Scheme, "http"),
                 };
 
                 foreach (var headerField in requestHeaders)
@@ -2991,9 +2991,9 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
                 var data = new TheoryData<IEnumerable<KeyValuePair<string, string>>>();
                 var requestHeaders = new[]
                 {
-                    new KeyValuePair<string, string>(":method", "GET"),
-                    new KeyValuePair<string, string>(":path", "/"),
-                    new KeyValuePair<string, string>(":scheme", "http"),
+                    new KeyValuePair<string, string>(HeaderNames.Method, "GET"),
+                    new KeyValuePair<string, string>(HeaderNames.Path, "/"),
+                    new KeyValuePair<string, string>(HeaderNames.Scheme, "http"),
                 };
 
                 foreach (var headerField in requestHeaders)
@@ -3011,12 +3011,12 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
             get
             {
                 var data = new TheoryData<IEnumerable<KeyValuePair<string, string>>>();
-                var methodHeader = new[] { new KeyValuePair<string, string>(":method", "CONNECT") };
+                var methodHeader = new[] { new KeyValuePair<string, string>(HeaderNames.Method, "CONNECT") };
                 var requestHeaders = new[]
                 {
-                    new KeyValuePair<string, string>(":path", "/"),
-                    new KeyValuePair<string, string>(":scheme", "http"),
-                    new KeyValuePair<string, string>(":authority", "127.0.0.1"),
+                    new KeyValuePair<string, string>(HeaderNames.Path, "/"),
+                    new KeyValuePair<string, string>(HeaderNames.Scheme, "http"),
+                    new KeyValuePair<string, string>(HeaderNames.Authority, "127.0.0.1"),
                 };
 
                 foreach (var headerField in requestHeaders)
@@ -3036,10 +3036,10 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests
                 var data = new TheoryData<IEnumerable<KeyValuePair<string, string>>>();
                 var requestHeaders = new[]
                 {
-                    new KeyValuePair<string, string>(":method", "GET"),
-                    new KeyValuePair<string, string>(":path", "/"),
-                    new KeyValuePair<string, string>(":authority", "127.0.0.1"),
-                    new KeyValuePair<string, string>(":scheme", "http"),
+                    new KeyValuePair<string, string>(HeaderNames.Method, "GET"),
+                    new KeyValuePair<string, string>(HeaderNames.Path, "/"),
+                    new KeyValuePair<string, string>(HeaderNames.Authority, "127.0.0.1"),
+                    new KeyValuePair<string, string>(HeaderNames.Scheme, "http"),
                     new KeyValuePair<string, string>("content-length", "0")
                 };