/// <summary>
/// Get the port control URL from the gateway.
/// </summary>
bool GetControlURL(string url)
{
string response = Tools.GetResponse(WebRequest.Create(url));
if (string.IsNullOrEmpty(response))
{
return(false);
}
// For me the full hierarchy of nodes was:
// root -> device -> deviceList -> device (again) -> deviceList (again) -> service,
// where the <serviceType> node had an identifier ending in one of the prefixes below.
// The service node with this type then contained <controlURL> node with the actual URL.
// TLDR: It's just a hell of a lot easier to go straight for the prize instead.
// IP gateway (Router, cable modem)
mServiceType = "WANIPConnection";
int offset = response.IndexOf(mServiceType);
// PPP gateway (ADSL modem)
if (offset == -1)
{
mServiceType = "WANPPPConnection";
offset = response.IndexOf(mServiceType);
if (offset == -1)
{
return(false);
}
}
int end = response.IndexOf("</service>", offset);
if (end == -1)
{
return(false);
}
int start = response.IndexOf("<controlURL>", offset, end - offset);
if (start == -1)
{
return(false);
}
start += 12;
end = response.IndexOf("</controlURL>", start, end - start);
if (end == -1)
{
return(false);
}
// Final URL
mControlURL = mGatewayURL + response.Substring(start, end - start);
return(true);
}
/// <summary>
/// Send a SOAP request to the gateway.
/// Some routers (like my NETGEAR RangeMax) seem to fail requests for no reason, so repetition may be needed.
/// </summary>
string SendRequest(string action, string content, int timeout, int repeat)
{
string request = "<?xml version=\"1.0\"?>\n" +
"<s:Envelope xmlns:s=\"http://schemas.xmlsoap.org/soap/envelope/\" s:encodingStyle=" +
"\"http://schemas.xmlsoap.org/soap/encoding/\">\n<s:Body>\n" +
"<m:" + action + " xmlns:m=\"urn:schemas-upnp-org:service:" + mServiceType + ":1\">\n";
if (!string.IsNullOrEmpty(content))
{
request += content;
}
request += "</m:" + action + ">\n</s:Body>\n</s:Envelope>\n";
byte[] b = Encoding.UTF8.GetBytes(request);
string response = null;
try
{
for (int i = 0; i < repeat; ++i)
{
WebRequest web = HttpWebRequest.Create(mControlURL);
web.Timeout = timeout;
web.Method = "POST";
web.Headers.Add("SOAPACTION", "\"urn:schemas-upnp-org:service:" + mServiceType + ":1#" + action + "\"");
web.ContentType = "text/xml; charset=\"utf-8\"";
web.ContentLength = b.Length;
web.GetRequestStream().Write(b, 0, b.Length);
response = Tools.GetResponse(web);
if (!string.IsNullOrEmpty(response))
{
return(response);
}
}
}
catch (System.Exception) { }
return(null);
}