update msearch

RSSDP/SsdpHelper.cs

@@ -0,0 +1,88 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+using MediaBrowser.Model.Net;
+using MediaBrowser.Model.Text;
+
+namespace RSSDP
+{
+    public class SsdpHelper
+    {
+        private readonly ITextEncoding _encoding;
+
+        public SsdpHelper(ITextEncoding encoding)
+        {
+            _encoding = encoding;
+        }
+
+        public SsdpMessageInfo ParseSsdpResponse(byte[] data)
+        {
+            using (var ms = new MemoryStream(data))
+            {
+                using (var reader = new StreamReader(ms, _encoding.GetASCIIEncoding()))
+                {
+                    var proto = (reader.ReadLine() ?? string.Empty).Trim();
+                    var method = proto.Split(new[] { ' ' }, 2)[0];
+                    var headers = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
+                    for (var line = reader.ReadLine(); line != null; line = reader.ReadLine())
+                    {
+                        line = line.Trim();
+                        if (string.IsNullOrEmpty(line))
+                        {
+                            break;
+                        }
+                        var parts = line.Split(new[] { ':' }, 2);
+
+                        if (parts.Length >= 2)
+                        {
+                            headers[parts[0]] = parts[1].Trim();
+                        }
+                    }
+
+                    return new SsdpMessageInfo
+                    {
+                        Method = method,
+                        Headers = headers,
+                        Message = data
+                    };
+                }
+            }
+        }
+
+        public static string BuildMessage(string header, Dictionary<string, string> values)
+        {
+            var builder = new StringBuilder();
+
+            const string argFormat = "{0}: {1}\r\n";
+
+            builder.AppendFormat("{0}\r\n", header);
+
+            foreach (var pair in values)
+            {
+                builder.AppendFormat(argFormat, pair.Key, pair.Value);
+            }
+
+            builder.Append("\r\n");
+
+            return builder.ToString();
+        }
+    }
+
+    public class SsdpMessageInfo
+    {
+        public string Method { get; set; }
+
+        public IpEndPointInfo EndPoint { get; set; }
+
+        public Dictionary<string, string> Headers { get; set; }
+
+        public IpEndPointInfo LocalEndPoint { get; set; }
+        public byte[] Message { get; set; }
+
+        public SsdpMessageInfo()
+        {
+            Headers = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
+        }
+    }
+}