source: binary-improvements2/WebServer/src/WebUtils.cs@ 397

using System;
using System.Net;
using System.Text;
using AllocsFixes.JSON;
using HttpListenerRequest = SpaceWizards.HttpListener.HttpListenerRequest;
using HttpListenerResponse = SpaceWizards.HttpListener.HttpListenerResponse;

namespace Webserver {
        public static class WebUtils {
                public const string MimePlain = "text/plain";
                public const string MimeHtml = "text/html";
                public const string MimeJson = "application/json";
                
                private static readonly UnityEngine.Profiling.CustomSampler jsonSerializeSampler = UnityEngine.Profiling.CustomSampler.Create ("JSON_Serialize");
                private static readonly UnityEngine.Profiling.CustomSampler netWriteSampler = UnityEngine.Profiling.CustomSampler.Create ("JSON_Write");

                public static void WriteJson (HttpListenerResponse _resp, JsonNode _root, HttpStatusCode _statusCode = HttpStatusCode.OK) {
                        jsonSerializeSampler.Begin ();
                        StringBuilder sb = new StringBuilder ();
                        _root.ToString (sb);
                        jsonSerializeSampler.End ();
                        netWriteSampler.Begin ();
                        WriteText (_resp, sb.ToString(), _statusCode, MimeJson);
                        netWriteSampler.End ();
                }

                public static void WriteText (HttpListenerResponse _resp, string _text, HttpStatusCode _statusCode = HttpStatusCode.OK, string _mimeType = null) {
                        _resp.StatusCode = (int)_statusCode;
                        _resp.ContentType = _mimeType ?? MimePlain;
                        _resp.ContentEncoding = Encoding.UTF8;

                        byte[] buf = Encoding.UTF8.GetBytes (_text);
                        _resp.ContentLength64 = buf.Length;
                        _resp.OutputStream.Write (buf, 0, buf.Length);
                }

                public static bool IsSslRedirected (HttpListenerRequest _req) {
                        string proto = _req.Headers ["X-Forwarded-Proto"];
                        return !string.IsNullOrEmpty (proto) && proto.Equals ("https", StringComparison.OrdinalIgnoreCase);
                }
                
                public static string GenerateGuid () {
                        return Guid.NewGuid ().ToString ();
                }
        }
}