public static IEnumerable <IPAddress> GetRemoteIPAddresses(this HttpContext httpContext)
{
var result = new List <IPAddress>();
if (httpContext.Connection.RemoteIpAddress != null)
{
result.Add(httpContext.Connection.RemoteIpAddress);
}
string failed = null;
if (httpContext.Request.Headers.TryGetValue("X-Forwarded-For", out var ipList) && ipList.Any())
{
var ips = ipList.Select(x => x.Split(",")).SelectMany(x => x).Where(x => !string.IsNullOrWhiteSpace(x));
foreach (var ip in ips)
{
if (CreyIPAddress.TryParse(ip, out var parsed))
{
result.Add(parsed);
}
else if (failed == null)
{
failed = string.Join(",", ips);
}
}
}
if (!result.Any() && failed != null)
{
throw new InvalidArgumentException($"Failed to parse IP from one of:'{failed}'");
}
return(result);
}
public async Task <GeoLocation> GetLocation(string ipAddress)
{
return(CreyIPAddress.TryParse(ipAddress, out var ip) ? await GetLocation(ip) : null);
}
