Get the Ip Info from Client to Web Api - angularjs

Question

fist at all sorry for my bad English.
I'm trying to get the IP in the login option to save them as a "Session" in the database and register who and where is using the app.
I try this, but it obvious that it isn't going to work.
var ip = new System.Net.WebClient().DownloadString("http://ipinfo.io/json");
It Gets the IP Client. So it logical that I need to do this get in the Client side. But the problem is that the Client can change this values before its send to the Web API
$http.get("http://ipinfo.io/json").then(function (response) {
return response.data;
}).catch(function (response) {
console.log(response.data);
});
The users can change this value to send me a false data in the login and I don't have how to validate if this information is valid or real. So, the question is ¿How can I do this without let the user manipulate this data?

Answer 1

Create a method in web API, and we can save all the information needed directly to database.
public static string UserIp()
{
string ip = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
if (string.IsNullOrEmpty(ip))
{
ip = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
}
try
{
string url1 = "http://geoip.nekudo.com/api/" + ip.ToString(); // passing IP address will return location information.
WebClient client = new WebClient(); // Intialize the webclient
string jsonstring = client.DownloadString(url1);
dynamic dynObj = JsonConvert.DeserializeObject(jsonstring); // De-serialize the JSON string
string filePath = AppDomain.CurrentDomain.BaseDirectory + "\\App_Data\\Logs\\" + "Ip.txt";
using (System.IO.StreamWriter writer = new StreamWriter(filePath, true))
{
// you can save the information to database instead of writing to a file
writer.WriteLine("UserIp:" + ip);
writer.WriteLine("Date:" + DateTime.Now);
writer.WriteLine("JsonString:" + jsonstring);
writer.WriteLine("Country name:" + dynObj.country.code);
}
return dynObj;
}
catch (Exception ex)
{
string filePath = AppDomain.CurrentDomain.BaseDirectory + "\\App_Data\\Logs\\" + "I.txt";
string url1 = "http://geoip.nekudo.com/api/" + ip.ToString();
WebClient client = new WebClient(); // Intialize the webclient
string jsonstring = client.DownloadString(url1);
dynamic dynObj = JsonConvert.DeserializeObject(jsonstring);
// string a = dynObj.country.code;
using (System.IO.StreamWriter writer = new StreamWriter(filePath, true))
{
writer.WriteLine("Message :" + ex.Message + "<br/>" + Environment.NewLine + "StackTrace :" +
ex.StackTrace +
"" + Environment.NewLine + "Date :" + DateTime.Now.ToString());
writer.WriteLine("UserIp:" + ip);
writer.WriteLine("Dynamic obj:" + dynObj);
}
return null;
}
}