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jellyfin/MediaBrowser.Dlna/Ssdp/SsdpHelper.cs

59 lines
2.1 KiB

using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
namespace MediaBrowser.Dlna.Ssdp
{
public class SsdpHelper
{
private const string SsdpRenderer = "M-SEARCH * HTTP/1.1\r\n" +
"HOST: 239.255.255.250:1900\r\n" +
"User-Agent: UPnP/1.0 DLNADOC/1.50 Platinum/0.6.9.1\r\n" +
"ST: urn:schemas-upnp-org:device:MediaRenderer:1\r\n" +
"MAN: \"ssdp:discover\"\r\n" +
"MX: {0}\r\n" +
"\r\n";
/// <summary>
/// Creates a SSDP MSearch packet for DlnaRenderers.
/// </summary>
/// <param name="mx">The mx. (Delaytime for device before responding)</param>
/// <returns></returns>
public static byte[] CreateRendererSSDP(int mx)
{
return Encoding.UTF8.GetBytes(string.Format(SsdpRenderer, mx));
}
/// <summary>
/// Parses the socket response into a location Uri for the DeviceDescription.xml.
/// </summary>
/// <param name="data">The data.</param>
/// <returns></returns>
public static Dictionary<string,string> ParseSsdpResponse(byte[] data)
{
var headers = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
using (var reader = new StreamReader(new MemoryStream(data), Encoding.ASCII))
{
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 headers;
}
}
}