BitConverter.ToUInt64: Explicitly set offset for compatibility with .NET Standard 2.0

Author: TalAloni

StandardSocketsHttpHandler/Net/Http/SocketsHttpHandler/HttpConnection.cs

@@ -39,8 +39,8 @@ internal partial class HttpConnection : IDisposable
         private static readonly byte[] s_spaceHttp11NewlineAsciiBytes = Encoding.ASCII.GetBytes(" HTTP/1.1\r\n");
         private static readonly byte[] s_httpSchemeAndDelimiter = Encoding.ASCII.GetBytes(Uri.UriSchemeHttp + Uri.SchemeDelimiter);
         private static readonly byte[] s_http1DotBytes = Encoding.ASCII.GetBytes("HTTP/1.");
-        private static readonly ulong s_http10Bytes = BitConverter.ToUInt64(Encoding.ASCII.GetBytes("HTTP/1.0"));
-        private static readonly ulong s_http11Bytes = BitConverter.ToUInt64(Encoding.ASCII.GetBytes("HTTP/1.1"));
+        private static readonly ulong s_http10Bytes = BitConverter.ToUInt64(Encoding.ASCII.GetBytes("HTTP/1.0"), 0);
+        private static readonly ulong s_http11Bytes = BitConverter.ToUInt64(Encoding.ASCII.GetBytes("HTTP/1.1"), 0);
 
         private readonly HttpConnectionPool _pool;
         private readonly Socket _socket; // used for polling; _stream should be used for all reading/writing. _stream owns disposal.
@@ -818,7 +818,7 @@ private static void ParseStatusLine(Span<byte> line, HttpResponseMessage respons
                 ThrowInvalidHttpResponse();
             }
 
-            ulong first8Bytes = BitConverter.ToUInt64(line.ToArray());
+            ulong first8Bytes = BitConverter.ToUInt64(line.ToArray(), 0);
             if (first8Bytes == s_http11Bytes)
             {
                 response.SetVersionWithoutValidation(HttpVersion.Version11);