Serialize HttpHeaders as JSON

HttpHeadersExtensions.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http.Headers;
using Newtonsoft.Json;

public static class HttpHeadersExtensions
{
    public static string ToJson(this HttpHeaders headers)
    {
        var dict = ToDictionary(headers);
        return JsonConvert.SerializeObject(dict, Formatting.None);
    }

    public static string ToJsonIndented(this HttpHeaders headers)
    {
        var dict = ToDictionary(headers);
        return JsonConvert.SerializeObject(dict, Formatting.Indented);
    }

    private static Dictionary<string, string> ToDictionary(this HttpHeaders headers)
    {
        var dict = new Dictionary<string, string>();

        foreach (var item in headers.ToList())
        {
            if (item.Value != null)
            {
                var header = String.Empty;
                foreach (var value in item.Value)
                {
                    header += value + " ";
                }

                // Trim the trailing space and add item to the dictionary
                header = header.TrimEnd(" ".ToCharArray());
                dict.Add(item.Key, header);
            }
        }

        return dict;
    }
}