Network Programming in .NET

As an update to this, you might notice that the pi makes two calls during this, one to get the remote IP address and another to update the DNS at namecheap, it’s possible to limit this to one call, and get the server to make the update. – I’ve used a brinkster host, which will have outbound ips 65.182.100.104 or 65.182.101.243, and converted my script to asp.net:

string ip = Request.UserHostAddress;
Response.Write(“
IP Address:” + Request.UserHostAddress);
Response.Write(“
” + DateTime.Now);
string strPostdata = “/xml.response?”;
strPostdata += “apiuser=fiach”;
strPostdata += “&apikey=xxxxxxxxxxxxxxxxxxxxxxx”;
strPostdata += “&username=fiach”;
strPostdata += “&Command=namecheap.domains.dns.setHosts”;
strPostdata += “&ClientIp=82.4.23.126”;
strPostdata += “&SLD=servedwithpi”;
strPostdata += “&TLD=com”;
strPostdata += “&HostName1=www”;
strPostdata += “&RecordType1=A”;
strPostdata += “&Address1=” + ip;
strPostdata += “&MXPref1=10”;
strPostdata += “&TTL1=100”;
strPostdata += “&HostName2=www”;
strPostdata += “&RecordType2=A”;
strPostdata += “&Address2=” + ip;
strPostdata += “&MXPref2=10”;
strPostdata += “&TTL2=100”;
string strUrl = “http://api.namecheap.com” + strPostdata;
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(strUrl);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream st = response.GetResponseStream();
StreamReader sr = new StreamReader(st);
Response.Write(sr.ReadToEnd());
st.Close();

For Completeness,

My crontab line is like this
*/10 * * * * /usr/bin/python /home/pi/updateip.py

import httplib
brinkster = httplib.HTTPConnection(“dananos.brinkster.net”)
brinkster.request(“GET”, “/xxxxxx.aspx”)
response = brinkster.getresponse()
xml = response.read()
f = open(‘namecheap.txt’, ‘w’)
f.write(xml)
f.close()

– Sorry, I had to remove the exact location of the aspx page, since if it’s requested by another ip it will affect the location of my website.

– Perhaps a safety net of checking against the subnet mask of my ISP (TO-DO)….

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