private void SetupSessions()
{
const int SIO_UDP_CONNRESET = -1744830452;
byte[] inValue = { 0, 0, 0, 0 }; // == false
byte[] outValue = { 0, 0, 0, 0 }; // initialize to 0
IPAddress[] ips = NetInfo.GetLocalAddresses();
foreach (IPAddress addr in ips)
{
if (addr.AddressFamily == AddressFamily.InterNetwork || addr.ScopeId != 0)
{
if (sessions.ContainsKey(addr) == false)
{
try
{
if (addr.AddressFamily == AddressFamily.InterNetwork)
{
UdpClient session = new UdpClient(AddressFamily.InterNetwork);
try { session.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true); }
catch (SocketException ex)
{
EventLogger.Log(ex);
}
try { session.ExclusiveAddressUse = false; }
catch (SocketException ex)
{
EventLogger.Log(ex);
}
if (!Utils.IsMono())
{
session.Client.Bind(new IPEndPoint(addr, 1900));
}
else
{
session.Client.Bind(new IPEndPoint(IPAddress.Any, 1900));
}
session.EnableBroadcast = true;
session.JoinMulticastGroup(Utils.UpnpMulticastV4Addr, addr);
try { session.Client.IOControl(SIO_UDP_CONNRESET, inValue, outValue); }
catch (SocketException ex)
{
EventLogger.Log(ex);
}
session.BeginReceive(OnReceiveSink, new object[] { session, new IPEndPoint(addr, ((IPEndPoint)session.Client.LocalEndPoint).Port) });
sessions[addr] = session;
UdpClient usession = new UdpClient(AddressFamily.InterNetwork);
usession.Client.Bind(new IPEndPoint(addr, 0));
try { usession.Client.IOControl(SIO_UDP_CONNRESET, inValue, outValue); }
catch (SocketException ex)
{
EventLogger.Log(ex);
}
usession.BeginReceive(OnReceiveSink, new object[] { usession, new IPEndPoint(addr, ((IPEndPoint)session.Client.LocalEndPoint).Port) });
usessions[addr] = usession;
}
if (addr.AddressFamily == AddressFamily.InterNetworkV6)
{
UdpClient session = new UdpClient(AddressFamily.InterNetworkV6);
try { session.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true); }
catch (SocketException ex)
{
EventLogger.Log(ex);
}
try { session.ExclusiveAddressUse = false; }
catch (SocketException ex)
{
EventLogger.Log(ex);
}
if (!Utils.IsMono())
{
session.Client.Bind(new IPEndPoint(addr, 1900));
}
else
{
session.Client.Bind(new IPEndPoint(IPAddress.IPv6Any, 1900));
}
session.EnableBroadcast = true;
if (addr.IsIPv6LinkLocal)
{
session.JoinMulticastGroup((int)addr.ScopeId, Utils.UpnpMulticastV6Addr2);
}
else
{
session.JoinMulticastGroup((int)addr.ScopeId, Utils.UpnpMulticastV6Addr1);
}
try { session.Client.IOControl(SIO_UDP_CONNRESET, inValue, outValue); }
catch (SocketException ex)
{
EventLogger.Log(ex);
}
session.BeginReceive(OnReceiveSink, new object[] { session, new IPEndPoint(addr, ((IPEndPoint)session.Client.LocalEndPoint).Port) });
sessions[addr] = session;
UdpClient usession = new UdpClient(AddressFamily.InterNetworkV6);
usession.Client.Bind(new IPEndPoint(addr, 0));
try { usession.Client.IOControl(SIO_UDP_CONNRESET, inValue, outValue); }
catch (SocketException ex)
{
EventLogger.Log(ex);
}
usession.BeginReceive(OnReceiveSink, new object[] { usession, new IPEndPoint(addr, ((IPEndPoint)session.Client.LocalEndPoint).Port) });
usessions[addr] = usession;
}
}
catch (SocketException ex)
{
EventLogger.Log(ex);
} // Sometimes the bind will thru an exception. In this case, we want to skip that interface and move on.
}
}
}
}
/// <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);
}
}
}
