private static IPAddress GetExternalIPAddress(string serviceUrl)
{
string RequestText = "<?xml version=\"1.0\"?>" +
"<s:Envelope xmlns:s=\"http://schemas.xmlsoap.org/soap/envelope/\" s:encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\">" +
"<s:Body>" +
"<u:GetExternalIPAddress xmlns:u=\"urn:schemas-upnp-org:service:WAN" + (_WANPPP ? "PPP" : "IP") + "Connection:1\"></u:GetExternalIPAddress>" +
"</s:Body>" +
"</s:Envelope>";
byte[] RequestBytes = Encoding.ASCII.GetBytes(RequestText);
// Request the router tell us the external ip
byte[] ResponseBytes = null;
string ResponseText = null;
using (RMWebClient WC = new RMWebClient())
{
WC.ContentType = "text/xml; charset=\"utf-8\"";
WC.Headers.Add("SOAPACTION", "\"urn:schemas-upnp-org:service:WAN" + (_WANPPP ? "PPP" : "IP") + "Connection:1#GetExternalIPAddress\"");
WC.Timeout = 5000;
ResponseBytes = WC.UploadData(serviceUrl, RequestBytes);
ResponseText = Encoding.ASCII.GetString(ResponseBytes);
}
// Load xml into parser
XmlDocument XmlDoc = new XmlDocument();
XmlDoc.LoadXml(ResponseText);
// Add namespace
XmlNamespaceManager NSManager = new XmlNamespaceManager(XmlDoc.NameTable);
NSManager.AddNamespace("tns", "urn:schemas-upnp-org:device-1-0");
// Get IP
string IP = XmlDoc.SelectSingleNode("//NewExternalIPAddress/text()", NSManager).Value;
// Return if it's valid
IPAddress Result = null;
if (IPAddress.TryParse(IP, out Result) && !WebUtils.IsPrivateIP(Result))
{
return(Result);
}
else
{
return(IPAddress.None);
}
}
public static IPAddress GetExternalIPv4ByHttp(int port)
{
using (RMWebClient WC = new RMWebClient())
{
WC.Timeout = 5000;
string IP = WC.DownloadString("http://www.randm.ca:" + port.ToString() + "/whats-my-ip.php");
// Return if it's valid
IPAddress Result = IPAddress.None;
if (IPAddress.TryParse(IP, out Result) && !WebUtils.IsPrivateIP(Result))
{
return(Result);
}
}
return(IPAddress.None);
}
private static IPAddress GetPublicAddressResponse(List <UdpClient> clients)
{
// Loop through that list of clients up to 100 times to check for a discovery response
IPEndPoint RemoteEndPoint = null;
for (int i = 0; i < 100; i++)
{
foreach (UdpClient Client in clients)
{
try
{
// Check if this client has a response
if (Client.Available > 0)
{
byte[] ResponseBytes = Client.Receive(ref RemoteEndPoint);
if ((ResponseBytes.Length == 12) && (ResponseBytes[0] == 0) && (ResponseBytes[1] == 128) && (IPAddress.NetworkToHostOrder(BitConverter.ToInt16(ResponseBytes, 2)) == 0))
{
IPAddress Result = new IPAddress(new byte[] { ResponseBytes[8], ResponseBytes[9], ResponseBytes[10], ResponseBytes[11] });
if (!WebUtils.IsPrivateIP(Result))
{
return(Result);
}
}
}
}
catch
{
// Ignore
}
}
// 100 times through at 50 millisecond sleep each time means we'll wait up to 5 seconds for a response
Thread.Sleep(50);
}
return(IPAddress.None);
}