// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
namespace System.Net
{
    public enum HttpResponseHeader
    {
        CacheControl = 0,    // general-header [section 4.5]
        Connection = 1,    // general-header [section 4.5]
        Date = 2,    // general-header [section 4.5]
        KeepAlive = 3,    // general-header [not in RFC]
        Pragma = 4,    // general-header [section 4.5]
        Trailer = 5,    // general-header [section 4.5]
        TransferEncoding = 6,    // general-header [section 4.5]
        Upgrade = 7,    // general-header [section 4.5]
        Via = 8,    // general-header [section 4.5]
        Warning = 9,    // general-header [section 4.5]
        Allow = 10,   // entity-header  [section 7.1]
        ContentLength = 11,   // entity-header  [section 7.1]
        ContentType = 12,   // entity-header  [section 7.1]
        ContentEncoding = 13,   // entity-header  [section 7.1]
        ContentLanguage = 14,   // entity-header  [section 7.1]
        ContentLocation = 15,   // entity-header  [section 7.1]
        ContentMd5 = 16,   // entity-header  [section 7.1]
        ContentRange = 17,   // entity-header  [section 7.1]
        Expires = 18,   // entity-header  [section 7.1]
        LastModified = 19,   // entity-header  [section 7.1]
 
        AcceptRanges = 20,   // response-header [section 6.2]
        Age = 21,   // response-header [section 6.2]
        ETag = 22,   // response-header [section 6.2]
        Location = 23,   // response-header [section 6.2]
        ProxyAuthenticate = 24,   // response-header [section 6.2]
        RetryAfter = 25,   // response-header [section 6.2]
        Server = 26,   // response-header [section 6.2]
        SetCookie = 27,   // response-header [not in RFC]
        Vary = 28,   // response-header [section 6.2]
        WwwAuthenticate = 29,   // response-header [section 6.2]
    }
 
    internal static class HttpResponseHeaderExtensions
    {
        private static readonly string[] s_names = {
            "Cache-Control",
            "Connection",
            "Date",
            "Keep-Alive",
            "Pragma",
            "Trailer",
            "Transfer-Encoding",
            "Upgrade",
            "Via",
            "Warning",
            "Allow",
            "Content-Length",
            "Content-Type",
            "Content-Encoding",
            "Content-Language",
            "Content-Location",
            "Content-MD5",
            "Content-Range",
            "Expires",
            "Last-Modified",
            "Accept-Ranges",
            "Age",
            "ETag",
            "Location",
            "Proxy-Authenticate",
            "Retry-After",
            "Server",
            "Set-Cookie",
            "Vary",
            "WWW-Authenticate",
        };
 
        public static string GetName(this HttpResponseHeader header)
        {
            return s_names[(int)header];
        }
    }
}