private void RequestAnsweredSink(HTTPSession ss)
{
lock (TagQueue)
{
if (!ReceivedFirstResponse)
{
ReceivedFirstResponse = true;
IEnumerator en = TagQueue.GetEnumerator();
while (en.MoveNext())
{
StateData sd = (StateData)en.Current;
try
{
if (ProxySetting == null)
{
ss.Send(sd.Request);
}
else
{
HTTPMessage pr = (HTTPMessage)sd.Request.Clone();
pr.DirectiveObj = "http://" + sd.Dest + pr.DirectiveObj;
pr.Version = "1.0";
ss.Send(pr);
}
}
catch (Exception ex)
{
EventLogger.Log(ex);
}
}
}
}
}
public StateData(HTTPMessage req, IPEndPoint d, object Tag, HeaderHandler HeaderCB)
{
Dest = d;
Request = req;
this.Tag = Tag;
this.HeaderCB = HeaderCB;
}
private void GetHostByNameSink(IAsyncResult result)
{
IPHostEntry e;
try
{
e = Dns.EndGetHostEntry(result);
}
catch (Exception ex)
{
// Could not resolve?
EventLogger.Log(ex);
return;
}
object[] Args = (object[])result.AsyncState;
Uri Resource = (Uri)Args[0];
object Tag = Args[1];
ContinueRequest(
new IPEndPoint(e.AddressList[0], Resource.Port),
HTTPMessage.UnEscapeString(Resource.PathAndQuery),
Tag,
null);
}
private void SniffPacketSink(HTTPMessage Packet)
{
if (OnSniffPacket != null)
{
OnSniffPacket(Packet);
}
}
private void ReceiveSink(HTTPSession sender, HTTPMessage msg)
{
StateData sd = (StateData)sender.StateObject;
object Tag = sd.Tag;
if (msg.Version == "1.0" || msg.Version == "0.9")
{
sender.Close();
}
else
{
if (msg.GetTag("Connection").ToUpper() == "CLOSE")
{
sender.Close();
}
}
if (OnResponse != null)
{
OnResponse(this, msg, Tag);
}
// If I don't set this to null, this holds a strong reference, resulting in
// possible memory leaks
sender.StateObject = null;
lock (TagQueue)
{
if (TagQueue.Count == 0)
{
IdleTimeout = true;
KeepAliveTimer.Add(GetHashCode(), 10);
}
}
}
private void NonPipelinedSniffPacketSink(HTTPRequest sender, HTTPMessage Response, object Tag)
{
if (OnSniffPacket != null)
{
OnSniffPacket(this, Response, Tag);
}
}
private void OnReceiveSink(IAsyncResult result)
{
byte[] buffer;
IPEndPoint ep = null;
object[] args = (object[])result.AsyncState;
UdpClient session = (UdpClient)args[0];
IPEndPoint local = (IPEndPoint)args[1];
try
{
buffer = session.EndReceive(result, ref ep);
try
{
HTTPMessage Packet = HTTPMessage.ParseByteArray(buffer, 0, buffer.Length);
if (Packet != null)
{
Packet.LocalEndPoint = local;
Packet.RemoteEndPoint = ep;
ProcessPacket(Packet, Packet.RemoteEndPoint, local);
}
}
catch (Exception ex)
{
EventLogger.Log(ex);
}
session.BeginReceive(OnReceiveSink, args);
}
catch (Exception ex)
{
EventLogger.Log(ex);
sessions.Remove(local.Address);
}
}
private void NonPipelinedResponseSink(HTTPRequest sender, HTTPMessage Response, object Tag)
{
// OpenSource.Utilities.EventLogger.Log(sender.s,System.Diagnostics.EventLogEntryType.Information,"TryingToDispose");
_Source = sender.Source;
NotPipelinedTable.Remove(sender);
sender.Dispose();
if (OnResponse != null)
{
OnResponse(this, Response, Tag);
}
}
/// <summary>
/// Parses a URL
/// </summary>
/// <param name="ServiceURL">The URL to Parse</param>
/// <param name="WebIP">The IPAddress</param>
/// <param name="Port">The Port Number</param>
/// <param name="ServiceName">The Object</param>
static public void ParseURL(String ServiceURL, out String WebIP, out int Port, out String ServiceName)
{
Uri NewUri = new Uri(ServiceURL);
WebIP = NewUri.Host;
if (NewUri.HostNameType == UriHostNameType.Dns)
{
WebIP = Dns.GetHostEntry(WebIP).AddressList[0].ToString();
}
Port = NewUri.Port;
ServiceName = HTTPMessage.UnEscapeString(NewUri.PathAndQuery);
}
private void OnReceiveSink2(byte[] buffer, IPEndPoint remote, IPEndPoint local)
{
HTTPMessage msg;
try
{
msg = HTTPMessage.ParseByteArray(buffer, 0, buffer.Length);
}
catch (Exception ex)
{
EventLogger.Log(ex);
msg = new HTTPMessage();
msg.Directive = "---";
msg.DirectiveObj = "---";
msg.BodyBuffer = buffer;
}
msg.LocalEndPoint = local;
msg.RemoteEndPoint = remote;
DText parser = new DText();
String Location = msg.GetTag("Location");
int MaxAge = 0;
String ma = msg.GetTag("Cache-Control").Trim();
if (ma != "")
{
parser.ATTRMARK = ",";
parser.MULTMARK = "=";
parser[0] = ma;
for (int i = 1; i <= parser.DCOUNT(); ++i)
{
if (parser[i, 1].Trim().ToUpper() == "MAX-AGE")
{
MaxAge = int.Parse(parser[i, 2].Trim());
break;
}
}
}
ma = msg.GetTag("USN");
String USN = ma.Substring(ma.IndexOf(":") + 1);
String ST = msg.GetTag("ST");
if (USN.IndexOf("::") != -1)
{
USN = USN.Substring(0, USN.IndexOf("::"));
}
EventLogger.Log(this, EventLogEntryType.SuccessAudit, msg.RemoteEndPoint.ToString());
if (OnSearch != null)
{
OnSearch(msg.RemoteEndPoint, msg.LocalEndPoint, new Uri(Location), USN, ST, MaxAge);
}
}
private void SniffPacketSink(HTTPSession sender, HTTPMessage MSG)
{
if (OnSniffPacket != null)
{
if (sender.StateObject == null)
{
OnSniffPacket(this, MSG, null);
return;
}
StateData sd = (StateData)sender.StateObject;
object Tag = sd.Tag;
OnSniffPacket(this, MSG, Tag);
}
}
/// <summary>
/// Multicasts a HTTPMessage
/// </summary>
/// <param name="packet">The Packet to Multicast</param>
/// <param name="netinterface"></param>
public void BroadcastData(HTTPMessage packet, IPAddress netinterface)
{
UdpClient usession = (UdpClient)usessions[netinterface];
if (usession == null)
{
return;
}
byte[] buffer = Encoding.UTF8.GetBytes(packet.StringPacket);
if (netinterface.AddressFamily == AddressFamily.InterNetwork)
{
try
{
usession.Client.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.MulticastInterface, netinterface.GetAddressBytes());
usession.Send(buffer, buffer.Length, Utils.UpnpMulticastV4EndPoint);
usession.Send(buffer, buffer.Length, Utils.UpnpMulticastV4EndPoint);
}
catch (SocketException ex)
{
EventLogger.Log(ex);
}
}
else if (netinterface.AddressFamily == AddressFamily.InterNetworkV6 && netinterface.ScopeId != 0)
{
try
{
usession.Client.SetSocketOption(SocketOptionLevel.IPv6, SocketOptionName.MulticastInterface, BitConverter.GetBytes((int)netinterface.ScopeId));
if (netinterface.IsIPv6LinkLocal)
{
usession.Send(buffer, buffer.Length, Utils.UpnpMulticastV6EndPoint2);
usession.Send(buffer, buffer.Length, Utils.UpnpMulticastV6EndPoint2);
}
else
{
usession.Send(buffer, buffer.Length, Utils.UpnpMulticastV6EndPoint1);
usession.Send(buffer, buffer.Length, Utils.UpnpMulticastV6EndPoint1);
}
}
catch (SocketException ex)
{
EventLogger.Log(ex);
}
}
}
/// <summary>
/// Pipelines a Uri request
/// </summary>
/// <param name="Resource">Uri to GET</param>
/// <param name="Tag">State Data</param>
public void PipelineRequest(Uri Resource, object Tag)
{
object[] Args = { Resource, Tag };
string IP = Resource.Host;
if (Resource.HostNameType == UriHostNameType.Dns)
{
Dns.BeginGetHostEntry(IP, GetHostByNameSink, Args);
}
else
{
ContinueRequest(
new IPEndPoint(IPAddress.Parse(Resource.Host), Resource.Port),
HTTPMessage.UnEscapeString(Resource.PathAndQuery),
Tag,
null);
}
}
private void CreateSink(HTTPSession ss)
{
lock (TagQueue)
{
ss.OnHeader += HeaderSink;
ss.OnReceive += ReceiveSink;
ss.OnClosed += CloseSink;
ss.OnStreamDone += StreamDoneSink;
ss.OnRequestAnswered += RequestAnsweredSink;
if (OnSniff != null)
{
ss.OnSniff += SniffSink;
}
if (OnSniffPacket != null)
{
ss.OnSniffPacket += SniffPacketSink;
}
StateData sd = (StateData)TagQueue.Peek();
try
{
if (ProxySetting == null)
{
ss.Send(sd.Request);
}
else
{
HTTPMessage pr = (HTTPMessage)sd.Request.Clone();
pr.DirectiveObj = "http://" + sd.Dest + pr.DirectiveObj;
pr.Version = "1.0";
ss.Send(pr);
}
}
catch (Exception exc)
{
EventLogger.Log(exc);
}
}
}
private bool ValidateSearchPacket(HTTPMessage msg)
{
int MX;
if (msg.GetTag("MAN") != "\"ssdp:discover\"")
{
return(false); // { throw (new InvalidSearchPacketException("Invalid MAN")); }
}
if (msg.DirectiveObj != "*")
{
return(false); // { throw (new InvalidSearchPacketException("Expected * in RequestLine")); }
}
if (double.Parse(msg.Version, new CultureInfo("en-US").NumberFormat) < 1.1)
{
return(false); // { throw (new InvalidSearchPacketException("Version must be at least 1.1")); }
}
if (int.TryParse(msg.GetTag("MX"), out MX) == false || MX <= 0)
{
return(false); // { throw (new InvalidSearchPacketException("MX must be a positive integer")); }
}
return(true);
}
/// <summary>
/// Unicast a HTTPMessage
/// </summary>
/// <param name="msg">The Packet to Unicast</param>
public void UnicastData(HTTPMessage msg)
{
UdpClient usession = (UdpClient)usessions[msg.LocalEndPoint.Address];
if (usession == null)
{
return;
}
if (OnSniffPacket != null)
{
OnSniffPacket(null, msg.RemoteEndPoint, msg);
}
byte[] buffer = msg.RawPacket;
try
{
usession.Send(buffer, buffer.Length, msg.RemoteEndPoint);
}
catch (SocketException ex)
{
EventLogger.Log(ex);
}
}
private void HeaderSink(HTTPSession sender, HTTPMessage header, Stream TheStream)
{
_Source = sender.Source;
StateData sd;
if (TheStream != null)
{
// This is the result of post-headers in a chunked document
sd = (StateData)sender.StateObject;
object Tag = sd.Tag;
if (sd.HeaderCB != null)
{
sd.HeaderCB(this, sender, header, TheStream, Tag);
}
sender.StateObject = null;
KeepAliveTimer.Add(GetHashCode(), 10);
}
else
{
lock (TagQueue)
{
sd = (StateData)TagQueue.Dequeue();
}
sender.StateObject = sd;
object Tag = sd.Tag;
if (sd.HeaderCB != null)
{
sd.HeaderCB(this, sender, header, null, Tag);
if (sender.UserStream != null && !sender.IsChunked)
{
// If I don't set this to null, this holds a strong reference, resulting in
// possible memory leaks
sender.StateObject = null;
}
}
}
}
private void HandleHeader(HTTPSession sender, HTTPMessage Header, Stream StreamObject)
{
SessionTimer.Remove(sender);
OnHeaderEvent.Fire(Header, sender);
}
private void ProcessPacket(HTTPMessage msg, IPEndPoint src, IPEndPoint local)
{
if (OnSniffPacket != null)
{
OnSniffPacket(src, null, msg);
}
DText parser = new DText();
parser.ATTRMARK = "::";
bool Alive = false;
String UDN = msg.GetTag("USN");
parser[0] = UDN;
String USN = parser[1];
USN = USN.Substring(USN.IndexOf(":", StringComparison.Ordinal) + 1);
String ST = parser[2];
int MaxAge = 0;
String NTS = msg.GetTag("NTS").ToUpper();
if (NTS == "SSDP:ALIVE")
{
Alive = true;
String ma = msg.GetTag("Cache-Control").Trim();
if (ma != "")
{
parser.ATTRMARK = ",";
parser.MULTMARK = "=";
parser[0] = ma;
for (int i = 1; i <= parser.DCOUNT(); ++i)
{
if (parser[i, 1].Trim().ToUpper() == "MAX-AGE")
{
MaxAge = int.Parse(parser[i, 2].Trim());
break;
}
}
}
}
if (msg.Directive == "NOTIFY" && OnNotify != null)
{
Uri locuri = null;
string location = msg.GetTag("Location");
if (location != null && location.Length > 0)
{
try
{
locuri = new Uri(location);
}
catch (Exception ex)
{
EventLogger.Log(ex);
}
}
OnNotify(src, msg.LocalEndPoint, locuri, Alive, USN, ST, MaxAge, msg);
}
else if (msg.Directive == "M-SEARCH" && OnSearch != null)
{
if (ValidateSearchPacket(msg) == false)
{
return;
}
int MaxTimer = int.Parse(msg.GetTag("MX"));
SearchStruct SearchData = new SearchStruct();
SearchData.ST = msg.GetTag("ST");
SearchData.Source = src;
SearchData.Local = local;
SearchTimer.Add(SearchData, RandomGenerator.Next(0, MaxTimer));
}
}
private void ContinueRequest(IPEndPoint dest, string PQ, object Tag, HTTPMessage MSG)
{
HTTPMessage r;
if (MSG == null)
{
r = new HTTPMessage();
r.Directive = "GET";
r.DirectiveObj = PQ;
if (dest.AddressFamily == AddressFamily.InterNetwork)
{
r.AddTag("Host", dest.ToString());
}
if (dest.AddressFamily == AddressFamily.InterNetworkV6)
{
r.AddTag("Host", "[" + RemoveIPv6Scope(dest.ToString()) + "]");
}
}
else
{
r = MSG;
}
lock (TagQueue)
{
IdleTimeout = false;
KeepAliveTimer.Remove(GetHashCode());
if ((PIPELINE == false && _PIPELINE == false) || (_PIPELINE == false))
{
HTTPRequest TR = new HTTPRequest();
TR.ProxySetting = ProxySetting;
TR._PIPELINE = true;
if (OnSniff != null)
{
TR.OnSniff += NonPipelinedSniffSink;
}
if (OnSniffPacket != null)
{
TR.OnSniffPacket += NonPipelinedSniffPacketSink;
}
TR.OnResponse += NonPipelinedResponseSink;
NotPipelinedTable[TR] = TR;
TR.PipelineRequest(dest, r, Tag);
return;
}
TagQueue.Enqueue(new StateData(r, dest, Tag, null));
IPAddress localif = IPAddress.Any;
if (dest.AddressFamily == AddressFamily.InterNetworkV6)
{
localif = IPAddress.IPv6Any;
}
if (s == null)
{
ReceivedFirstResponse = false;
if (ProxySetting != null)
{
s = new HTTPSession(new IPEndPoint(localif, 0),
ProxySetting,
CreateSink,
CreateFailedSink,
null);
}
else
{
s = new HTTPSession(new IPEndPoint(localif, 0),
dest,
CreateSink,
CreateFailedSink,
null);
}
}
else
{
if (s.IsConnected && ReceivedFirstResponse)
{
try
{
if (ProxySetting == null)
{
s.Send(r);
}
else
{
HTTPMessage pr = (HTTPMessage)r.Clone();
pr.DirectiveObj = "http://" + dest + pr.DirectiveObj;
pr.Version = "1.0";
s.Send(pr);
}
}
catch (Exception ex)
{
EventLogger.Log(ex);
}
}
}
}
}
/// <summary>
/// Parses a Byte Array at a specific location, and builds a Packet.
/// </summary>
/// <param name="buffer">The Array of Bytes</param>
/// <param name="indx">The Start Index</param>
/// <param name="count">The number of Bytes to process</param>
/// <returns></returns>
static public HTTPMessage ParseByteArray(byte[] buffer, int indx, int count)
{
HTTPMessage TheMessage = new HTTPMessage();
UTF8Encoding UTF8 = new UTF8Encoding();
String TempData = UTF8.GetString(buffer, indx, count);
DText parser = new DText();
String TempString;
int idx = TempData.IndexOf("\r\n\r\n", StringComparison.Ordinal);
if (idx < 0)
{
return(null);
}
TempData = TempData.Substring(0, idx);
parser.ATTRMARK = "\r\n";
parser.MULTMARK = ":";
parser[0] = TempData;
string CurrentLine = parser[1];
DText HdrParser = new DText();
HdrParser.ATTRMARK = " ";
HdrParser.MULTMARK = "/";
HdrParser[0] = CurrentLine;
if (CurrentLine.ToUpper().StartsWith("HTTP/"))
{
TheMessage.ResponseCode = int.Parse(HdrParser[2]);
int s1 = CurrentLine.IndexOf(" ", StringComparison.Ordinal);
s1 = CurrentLine.IndexOf(" ", s1 + 1, StringComparison.Ordinal);
TheMessage.ResponseData = UnEscapeString(CurrentLine.Substring(s1));
try
{
TheMessage.Version = HdrParser[1, 2];
}
catch (Exception ex)
{
EventLogger.Log(ex);
TheMessage.Version = "0.9";
}
}
else
{
TheMessage.Directive = HdrParser[1];
TempString = CurrentLine.Substring(CurrentLine.LastIndexOf(" ", StringComparison.Ordinal) + 1);
if (TempString.ToUpper().StartsWith("HTTP/") == false)
{
TheMessage.Version = "0.9";
TheMessage.DirectiveObj = UnEscapeString(TempString);
}
else
{
TheMessage.Version = TempString.Substring(TempString.IndexOf("/", StringComparison.Ordinal) + 1);
int fs = CurrentLine.IndexOf(" ", StringComparison.Ordinal) + 1;
TheMessage.DirectiveObj = UnEscapeString(CurrentLine.Substring(
fs,
CurrentLine.Length - fs - TempString.Length - 1));
}
}
String Tag = "";
for (int line = 2; line <= parser.DCOUNT(); ++line)
{
String TagData;
if (Tag != "" && parser[line, 1].StartsWith(" "))
{
TagData = parser[line, 1].Substring(1);
}
else
{
Tag = parser[line, 1];
TagData = "";
for (int i = 2; i <= parser.DCOUNT(line); ++i)
{
if (TagData == "")
{
TagData = parser[line, i];
}
else
{
TagData = TagData + parser.MULTMARK + parser[line, i];
}
}
}
TheMessage.AppendTag(Tag, TagData);
}
int cl;
if (TheMessage.HasTag("Content-Length"))
{
try
{
cl = int.Parse(TheMessage.GetTag("Content-Length"));
}
catch (Exception ex)
{
EventLogger.Log(ex);
cl = -1;
}
}
else
{
cl = -1;
}
byte[] tbuffer;
if (cl > 0)
{
tbuffer = new byte[cl];
if ((idx + 4 + cl) > count)
{
// NOP
}
else
{
Array.Copy(buffer, idx + 4, tbuffer, 0, cl);
TheMessage.DataBuffer = tbuffer;
}
}
if (cl == -1)
{
tbuffer = new Byte[count - (idx + 4)];
Array.Copy(buffer, idx + 4, tbuffer, 0, tbuffer.Length);
TheMessage.DataBuffer = tbuffer;
}
if (cl == 0)
{
TheMessage.DataBuffer = new byte[0];
}
return(TheMessage);
}
/// <summary>
/// Searches for a SearchTarget Asynchronously
/// </summary>
/// <param name="SearchTarget">The Target</param>
public void FindDeviceAsync(String SearchTarget, IPEndPoint RemoteEP)
{
HTTPMessage request = new HTTPMessage();
request.Directive = "M-SEARCH";
request.DirectiveObj = "*";
request.AddTag("ST", SearchTarget);
request.AddTag("MX", MX.ToString());
request.AddTag("MAN", "\"ssdp:discover\"");
if (RemoteEP.AddressFamily == AddressFamily.InterNetwork)
{
request.AddTag("HOST", RemoteEP.ToString()); // "239.255.255.250:1900"
}
if (RemoteEP.AddressFamily == AddressFamily.InterNetworkV6)
{
request.AddTag("HOST", string.Format("[{0}]:{1}", RemoteEP.Address.ToString(), RemoteEP.Port)); // "[FF05::C]:1900"
}
byte[] buffer = UTF8Encoding.UTF8.GetBytes(request.StringPacket);
IPAddress[] LocalAddresses = NetInfo.GetLocalAddresses();
foreach (IPAddress localaddr in LocalAddresses)
{
try
{
UdpClient session = (UdpClient)SSDPSessions[localaddr];
if (session == null)
{
session = new UdpClient(new IPEndPoint(localaddr, 0));
session.EnableBroadcast = true;
session.BeginReceive(OnReceiveSink, session);
SSDPSessions[localaddr] = session;
}
if (RemoteEP.AddressFamily != session.Client.AddressFamily)
{
continue;
}
if ((RemoteEP.AddressFamily == AddressFamily.InterNetworkV6) && ((IPEndPoint)session.Client.LocalEndPoint).Address.IsIPv6LinkLocal && RemoteEP != Utils.UpnpMulticastV6EndPoint2)
{
continue;
}
if ((RemoteEP.AddressFamily == AddressFamily.InterNetworkV6) && ((IPEndPoint)session.Client.LocalEndPoint).Address.IsIPv6LinkLocal == false && RemoteEP != Utils.UpnpMulticastV6EndPoint1)
{
continue;
}
IPEndPoint lep = (IPEndPoint)session.Client.LocalEndPoint;
if (session.Client.AddressFamily == AddressFamily.InterNetwork)
{
session.Client.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.MulticastInterface, localaddr.GetAddressBytes());
}
else if (session.Client.AddressFamily == AddressFamily.InterNetworkV6)
{
session.Client.SetSocketOption(SocketOptionLevel.IPv6, SocketOptionName.MulticastInterface, BitConverter.GetBytes((int)localaddr.ScopeId));
}
session.Send(buffer, buffer.Length, RemoteEP);
session.Send(buffer, buffer.Length, RemoteEP);
}
catch (Exception ex)
{
EventLogger.Log(this, EventLogEntryType.Error, "CP Failure: " + localaddr.ToString());
EventLogger.Log(ex);
}
}
}
private void HandleRequest(HTTPSession WebSession, HTTPMessage request)
{
OnReceiveEvent.Fire(request, WebSession);
}
/// <summary>
/// Pipelines a request packet
/// </summary>
/// <param name="dest">Destination IPEndPoint</param>
/// <param name="MSG">HTTPMessage Packet</param>
/// <param name="Tag">State Data</param>
public void PipelineRequest(IPEndPoint dest, HTTPMessage MSG, object Tag)
{
ContinueRequest(dest, "", Tag, MSG);
}
/// <summary>
/// Triggered when a SSDP notification is received
/// </summary>
internal void SSDPNotifySink(IPEndPoint source, IPEndPoint local, Uri LocationURL, bool IsAlive, String USN, String SearchTarget, int MaxAge, HTTPMessage Packet)
{
UPnPDevice removedDevice = null;
// Simple ignore everything that is not root
if (SearchTarget != "upnp:rootdevice")
{
return;
}
if (IsAlive == false)
{
// The easy part first... we got a SSDP BYE message
// Remove the device completely no matter what state it is in
// right now. Also clear all clocks.
lock (deviceTableLock)
{
removedDevice = UnprotectedRemoveMe(USN);
}
if (removedDevice != null)
{
removedDevice.Removed();
OnRemovedDeviceEvent.Fire(this, removedDevice);
}
}
else
{
lock (deviceTableLock)
{
// Ok, This device is annoncing itself.
if (deviceTable.ContainsKey(USN) == false)
{
// Never saw this device before
DeviceInfo deviceInfo = new DeviceInfo();
deviceInfo.Device = null;
deviceInfo.UDN = USN;
deviceInfo.NotifyTime = DateTime.Now;
deviceInfo.BaseURL = LocationURL;
deviceInfo.MaxAge = MaxAge;
deviceInfo.LocalEP = local;
deviceTable[USN] = deviceInfo;
deviceFactory.CreateDevice(deviceInfo.BaseURL, deviceInfo.MaxAge, local.Address, USN); // TODO2: Does URI construction work all this time??
}
else
{
// We already know about this device, lets check it out
DeviceInfo deviceInfo = (DeviceInfo)deviceTable[USN];
if (deviceInfo.Device != null) // If the device is in creation mode, do nothing
{
if (deviceInfo.BaseURL.Equals(LocationURL))
{
// Cancel a possible source change
deviceUpdateClock.Remove(deviceInfo);
deviceInfo.PendingBaseURL = null;
deviceInfo.PendingMaxAge = 0;
deviceInfo.PendingLocalEP = null;
deviceInfo.PendingSourceEP = null;
// Then simply update the lifetime
deviceInfo.NotifyTime = DateTime.Now;
deviceTable[USN] = deviceInfo;
deviceLifeTimeClock.Add(deviceInfo.UDN, MaxAge);
}
else
{
// Wow, same device, different source - Check timing
if (deviceInfo.NotifyTime.AddSeconds(10).Ticks < DateTime.Now.Ticks)
{
// This is a possible source change. Wait for 3 seconds and make the switch.
deviceInfo.PendingBaseURL = LocationURL;
deviceInfo.PendingMaxAge = MaxAge;
deviceInfo.PendingLocalEP = local;
deviceInfo.PendingSourceEP = source;
deviceTable[USN] = deviceInfo;
deviceUpdateClock.Add(deviceInfo.UDN, 3);
}
}
}
}
}
}
}
private void HandleNotify(IPEndPoint source, IPEndPoint local, Uri LocationURL, bool IsAlive, String USN, String ST, int MaxAge, HTTPMessage Packet)
{
if (IsAlive && LocationURL != null)
{
EventLogger.Log(this, EventLogEntryType.SuccessAudit, LocationURL.ToString());
}
if (OnNotify != null)
{
OnNotify(source, local, LocationURL, IsAlive, USN, ST, MaxAge, Packet);
}
}