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stub out dlna server

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Luke Pulverenti
2014-03-24 08:47:39 -04:00
parent 1c3c12ebf6
commit 501dedb13c
9 changed files with 623 additions and 11 deletions
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260
MediaBrowser.Dlna/Server/SsdpHandler.cs Normal file
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using MediaBrowser.Controller.Configuration;
using MediaBrowser.Model.Logging;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
namespace MediaBrowser.Dlna.Server
{
public class SsdpHandler : IDisposable
{
private readonly ILogger _logger;
private readonly IServerConfigurationManager _config;
private readonly string _serverSignature;
private bool _isDisposed = false;
const string SSDPAddr = "239.255.255.250";
const int SSDPPort = 1900;
private readonly IPEndPoint _ssdpEndp = new IPEndPoint(IPAddress.Parse(SSDPAddr), SSDPPort);
private readonly IPAddress _ssdpIp = IPAddress.Parse(SSDPAddr);
private UdpClient _udpClient;
private readonly Dictionary<Guid, List<UpnpDevice>> _devices = new Dictionary<Guid, List<UpnpDevice>>();
public SsdpHandler(ILogger logger, IServerConfigurationManager config, string serverSignature)
{
_logger = logger;
_config = config;
_serverSignature = serverSignature;
Start();
}
private IEnumerable<UpnpDevice> Devices
{
get
{
UpnpDevice[] devs;
lock (_devices)
{
devs = _devices.Values.SelectMany(i => i).ToArray();
}
return devs;
}
}
private void Start()
{
_udpClient = new UdpClient();
_udpClient.Client.UseOnlyOverlappedIO = true;
_udpClient.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
_udpClient.ExclusiveAddressUse = false;
_udpClient.Client.Bind(new IPEndPoint(IPAddress.Any, SSDPPort));
_udpClient.JoinMulticastGroup(_ssdpIp, 2);
_logger.Info("SSDP service started");
Receive();
}
private void Receive()
{
try
{
_udpClient.BeginReceive(ReceiveCallback, null);
}
catch (ObjectDisposedException)
{
}
}
private void ReceiveCallback(IAsyncResult result)
{
try
{
var endpoint = new IPEndPoint(IPAddress.None, SSDPPort);
var received = _udpClient.EndReceive(result, ref endpoint);
if (_config.Configuration.DlnaOptions.EnableDebugLogging)
{
_logger.Debug("{0} - SSDP Received a datagram", endpoint);
}
using (var reader = new StreamReader(new MemoryStream(received), Encoding.ASCII))
{
var proto = (reader.ReadLine() ?? string.Empty).Trim();
var method = proto.Split(new[] { ' ' }, 2)[0];
var headers = new Headers();
for (var line = reader.ReadLine(); line != null; line = reader.ReadLine())
{
line = line.Trim();
if (string.IsNullOrEmpty(line))
{
break;
}
var parts = line.Split(new char[] { ':' }, 2);
headers[parts[0]] = parts[1].Trim();
}
if (_config.Configuration.DlnaOptions.EnableDebugLogging)
{
_logger.Debug("{0} - Datagram method: {1}", endpoint, method);
//_logger.Debug(headers);
}
if (string.Equals(method, "M-SEARCH", StringComparison.OrdinalIgnoreCase))
{
RespondToSearch(endpoint, headers["st"]);
}
}
}
catch (Exception ex)
{
_logger.ErrorException("Failed to read SSDP message", ex);
}
if (!_isDisposed)
{
Receive();
}
}
private void RespondToSearch(IPEndPoint endpoint, string req)
{
if (req == "ssdp:all")
{
req = null;
}
if (_config.Configuration.DlnaOptions.EnableDebugLogging)
{
_logger.Debug("RespondToSearch");
}
foreach (var d in Devices)
{
if (!string.IsNullOrEmpty(req) && req != d.Type)
{
continue;
}
SendSearchResponse(endpoint, d);
}
}
private void SendSearchResponse(IPEndPoint endpoint, UpnpDevice dev)
{
var headers = new RawHeaders();
headers.Add("CACHE-CONTROL", "max-age = 600");
headers.Add("DATE", DateTime.Now.ToString("R"));
headers.Add("EXT", "");
headers.Add("LOCATION", dev.Descriptor.ToString());
headers.Add("SERVER", _serverSignature);
headers.Add("ST", dev.Type);
headers.Add("USN", dev.USN);
SendDatagram(endpoint, String.Format("HTTP/1.1 200 OK\r\n{0}\r\n", headers.HeaderBlock), false);
_logger.Info("{1} - Responded to a {0} request", dev.Type, endpoint);
}
private void SendDatagram(IPEndPoint endpoint, string msg, bool sticky)
{
if (_isDisposed)
{
return;
}
//var dgram = new Datagram(endpoint, msg, sticky);
//if (messageQueue.Count == 0)
//{
// dgram.Send();
//}
//messageQueue.Enqueue(dgram);
//queueTimer.Enabled = true;
}
private void NotifyAll()
{
_logger.Debug("NotifyAll");
foreach (var d in Devices)
{
NotifyDevice(d, "alive", false);
}
}
private void NotifyDevice(UpnpDevice dev, string type, bool sticky)
{
_logger.Debug("NotifyDevice");
var headers = new RawHeaders();
headers.Add("HOST", "239.255.255.250:1900");
headers.Add("CACHE-CONTROL", "max-age = 600");
headers.Add("LOCATION", dev.Descriptor.ToString());
headers.Add("SERVER", _serverSignature);
headers.Add("NTS", "ssdp:" + type);
headers.Add("NT", dev.Type);
headers.Add("USN", dev.USN);
SendDatagram(_ssdpEndp, String.Format("NOTIFY * HTTP/1.1\r\n{0}\r\n", headers.HeaderBlock), sticky);
_logger.Debug("{0} said {1}", dev.USN, type);
}
private void RegisterNotification(Guid UUID, Uri Descriptor)
{
List<UpnpDevice> list;
lock (_devices)
{
if (!_devices.TryGetValue(UUID, out list))
{
_devices.Add(UUID, list = new List<UpnpDevice>());
}
}
foreach (var t in new[] { "upnp:rootdevice", "urn:schemas-upnp-org:device:MediaServer:1", "urn:schemas-upnp-org:service:ContentDirectory:1", "uuid:" + UUID })
{
list.Add(new UpnpDevice(UUID, t, Descriptor));
}
NotifyAll();
_logger.Debug("Registered mount {0}", UUID);
}
internal void UnregisterNotification(Guid UUID)
{
List<UpnpDevice> dl;
lock (_devices)
{
if (!_devices.TryGetValue(UUID, out dl))
{
return;
}
_devices.Remove(UUID);
}
foreach (var d in dl)
{
NotifyDevice(d, "byebye", true);
}
_logger.Debug("Unregistered mount {0}", UUID);
}
public void Dispose()
{
_isDisposed = true;
//while (messageQueue.Count != 0)
//{
// datagramPosted.WaitOne();
//}
_udpClient.DropMulticastGroup(_ssdpIp);
_udpClient.Close();
//notificationTimer.Enabled = false;
//queueTimer.Enabled = false;
//notificationTimer.Dispose();
//queueTimer.Dispose();
//datagramPosted.Dispose();
}
}
}