private string NetworkChecker()
{
try
{
var port = string.IsNullOrEmpty(Port) ? "21" : Port;
IpAddress = IpAddress.Contains(":") ? IpAddress : IpAddress + ":" + port;
FtpWebRequest request = (FtpWebRequest)WebRequest.Create($"ftp://{IpAddress}/projectFolder/");
request.Method = WebRequestMethods.Ftp.ListDirectory;
request.Credentials = new NetworkCredential("server", "abc");
var response = (FtpWebResponse)request.GetResponse();
response.Close();
return(port);
}
catch (Exception e)
{
Console.WriteLine(e + "Ip is invalid");
throw;
}
}
private void GetExternalIpAddress(object o)
{
// http://www.ipv6proxy.net/ --> "Your IP address : 2600:3c00::f03c:91ff:fe93:dcd4"
try
{
foreach (var domain in Domains)
{
try
{
string url = $"{domain}/{DetectionFile}";
Debug.WriteLine("Fetching external IpAddress from " + url + " attempt " + _retryCount);
IpAddress = "IpAddress 0.0.0.0";
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
if (request != null)
{
request.UserAgent = "Chem4Word Add-In";
request.Timeout = 2000; // 2 seconds
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
if (HttpStatusCode.OK.Equals(response.StatusCode))
{
using (var reader = new StreamReader(response.GetResponseStream()))
{
string webPage = reader.ReadToEnd();
if (webPage.StartsWith("Your IP address : "))
{
// Tidy Up the data
webPage = webPage.Replace("Your IP address : ", "");
webPage = webPage.Replace("<br/>", "");
webPage = webPage.Replace("<br />", "");
#region Detect IPv6
if (webPage.Contains(":"))
{
string[] ipV6Parts = webPage.Split(':');
// Must have between 4 and 8 parts
if (ipV6Parts.Length >= 4 && ipV6Parts.Length <= 8)
{
IpAddress = "IpAddress " + webPage;
IpObtainedFrom = $"IpAddress V6 obtained from {url} on attempt {_retryCount + 1}";
break;
}
}
#endregion Detect IPv6
#region Detect IPv4
if (webPage.Contains("."))
{
// Must have 4 parts
string[] ipV4Parts = webPage.Split('.');
if (ipV4Parts.Length == 4)
{
IpAddress = "IpAddress " + webPage;
IpObtainedFrom = $"IpAddress V4 obtained from {url} on attempt {_retryCount + 1}";
break;
}
}
#endregion Detect IPv4
}
Debug.WriteLine(IpAddress);
}
}
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
// Do Nothing
}
Thread.Sleep(500);
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
// Something went wrong
IpAddress = "IpAddress 0.0.0.0 - " + ex.Message;
}
if (string.IsNullOrEmpty(IpAddress) || IpAddress.Contains("0.0.0.0"))
{
if (_retryCount < 5)
{
_retryCount++;
Thread.Sleep(500);
ParameterizedThreadStart pts = GetExternalIpAddress;
Thread t = new Thread(pts);
t.Start(null);
}
}
}
private void GetExternalIpAddress(object o)
{
string module = $"{MethodBase.GetCurrentMethod().Name}()";
string message = $"{module} started at {SafeDate.ToLongDate(DateTime.Now)}";
StartUpTimings.Add(message);
Debug.WriteLine(message);
Stopwatch sw = new Stopwatch();
sw.Start();
// http://www.ipv6proxy.net/ --> "Your IP address : 2600:3c00::f03c:91ff:fe93:dcd4"
try
{
foreach (var domain in Domains)
{
try
{
string url = $"{domain}/{DetectionFile}";
Debug.WriteLine("Fetching external IpAddress from " + url + " attempt " + _retryCount);
IpAddress = "IpAddress 0.0.0.0";
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
if (request != null)
{
request.UserAgent = "Chem4Word Add-In";
request.Timeout = 2000; // 2 seconds
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
try
{
// Get Server Date header i.e. "Tue, 01 Jan 2019 19:52:46 GMT"
ServerDateHeader = response.Headers["date"];
}
catch
{
// Do Nothing
}
if (HttpStatusCode.OK.Equals(response.StatusCode))
{
using (var reader = new StreamReader(response.GetResponseStream()))
{
string webPage = reader.ReadToEnd();
if (webPage.StartsWith("Your IP address : "))
{
// Tidy Up the data
webPage = webPage.Replace("Your IP address : ", "");
webPage = webPage.Replace("UTC Date : ", "");
webPage = webPage.Replace("<br/>", "|");
webPage = webPage.Replace("<br />", "|");
string[] lines = webPage.Split('|');
#region Detect IPv6
if (lines[0].Contains(":"))
{
string[] ipV6Parts = lines[0].Split(':');
// Must have between 4 and 8 parts
if (ipV6Parts.Length >= 4 && ipV6Parts.Length <= 8)
{
IpAddress = "IpAddress " + lines[0];
IpObtainedFrom = $"IpAddress V6 obtained from {url} on attempt {_retryCount + 1}";
}
}
#endregion Detect IPv6
#region Detect IPv4
if (lines[0].Contains("."))
{
// Must have 4 parts
string[] ipV4Parts = lines[0].Split('.');
if (ipV4Parts.Length == 4)
{
IpAddress = "IpAddress " + lines[0];
IpObtainedFrom = $"IpAddress V4 obtained from {url} on attempt {_retryCount + 1}";
}
}
#endregion Detect IPv4
#region Detect Php UTC Date
if (lines.Length > 1)
{
ServerUtcDateRaw = lines[1];
ServerUtcDateTime = FromPhpDate(lines[1]);
SystemUtcDateTime = DateTime.UtcNow;
UtcOffset = SystemUtcDateTime.Ticks - ServerUtcDateTime.Ticks;
}
#endregion Detect Php UTC Date
if (!IpAddress.Contains("0.0.0.0"))
{
break;
}
}
Debug.WriteLine(IpAddress);
}
}
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
// Do Nothing
}
Thread.Sleep(500);
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
// Something went wrong
IpAddress = "IpAddress 0.0.0.0 - " + ex.Message;
}
if (string.IsNullOrEmpty(IpAddress) || IpAddress.Contains("0.0.0.0"))
{
if (_retryCount < 5)
{
_retryCount++;
Thread.Sleep(500);
ParameterizedThreadStart pts = GetExternalIpAddress;
Thread thread = new Thread(pts);
thread.SetApartmentState(ApartmentState.STA);
thread.Start(null);
}
}
sw.Stop();
message = $"{module} took {sw.ElapsedMilliseconds.ToString("#,000")}ms";
StartUpTimings.Add(message);
Debug.WriteLine(message);
}
private void GetExternalIpAddress(object o)
{
string module = $"{MethodBase.GetCurrentMethod().Name}()";
try
{
string message;
IpAddress = "0.0.0.0";
for (int i = 0; i < 2; i++)
{
foreach (string place in _placesToTry)
{
_attempts++;
try
{
message = $"Attempt #{_attempts} using '{place}'";
StartUpTimings.Add(message);
Debug.WriteLine(message);
if (place.Contains("chem4word"))
{
GetInternalVersion(place);
}
else
{
GetExternalVersion(place);
}
// Exit out of inner loop
if (!IpAddress.Contains("0.0.0.0"))
{
break;
}
}
catch (Exception exception)
{
Debug.WriteLine(exception.Message);
StartUpTimings.Add(exception.Message);
}
}
// Exit out of outer loop
if (!IpAddress.Contains("0.0.0.0"))
{
break;
}
}
if (IpAddress.Contains("0.0.0.0"))
{
// Handle failure
IpAddress = "8.8.8.8";
}
_ipStopwatch.Stop();
message = $"{module} took {SafeDouble.AsString0(_ipStopwatch.ElapsedMilliseconds)}ms";
StartUpTimings.Add(message);
Debug.WriteLine(message);
}
catch (ThreadAbortException threadAbortException)
{
// Do Nothing
Debug.WriteLine(threadAbortException.Message);
}
catch (Exception exception)
{
Debug.WriteLine(exception.Message);
StartUpTimings.Add(exception.Message);
}
}