private string GetData(string url)
{
string result = "0.0.0.0";
try
{
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
if (request != null)
{
request.UserAgent = "Chem4Word Add-In";
request.Timeout = url.Contains("chem4word") ? 2000 : 1000;
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
ServerDateHeader = null;
}
if (HttpStatusCode.OK.Equals(response.StatusCode))
{
var stream = response.GetResponseStream();
if (stream != null)
{
using (var reader = new StreamReader(stream))
{
result = reader.ReadToEnd();
}
}
}
}
}
catch (WebException webException)
{
StartUpTimings.Add(webException.Status == WebExceptionStatus.Timeout
? $"Timeout: '{url}'"
: webException.Message);
}
catch (Exception exception)
{
StartUpTimings.Add(exception.Message);
}
return(result);
}
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 string GetData(string url)
{
string result = "0.0.0.0";
var securityProtocol = ServicePointManager.SecurityProtocol;
try
{
if (url.StartsWith("https"))
{
ServicePointManager.SecurityProtocol = securityProtocol | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;
}
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
if (request != null)
{
request.UserAgent = "Chem4Word Add-In";
request.Timeout = url.Contains("chem4word") ? 5000 : 2500;
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
try
{
// Get Server Date header i.e. "Tue, 01 Jan 2019 19:52:46 GMT"
ServerDateHeader = response.Headers["date"];
SystemUtcDateTime = DateTime.UtcNow;
ServerUtcDateTime = DateTime.Parse(ServerDateHeader).ToUniversalTime();
UtcOffset = SystemUtcDateTime.Ticks - ServerUtcDateTime.Ticks;
}
catch
{
// Indicate failure
ServerDateHeader = null;
SystemUtcDateTime = DateTime.MinValue;
}
if (HttpStatusCode.OK.Equals(response.StatusCode))
{
var stream = response.GetResponseStream();
if (stream != null)
{
using (var reader = new StreamReader(stream))
{
result = reader.ReadToEnd();
}
}
}
}
}
catch (WebException webException)
{
StartUpTimings.Add(webException.Status == WebExceptionStatus.Timeout
? $"Timeout: '{url}'"
: webException.Message);
}
catch (Exception exception)
{
StartUpTimings.Add(exception.Message);
}
finally
{
ServicePointManager.SecurityProtocol = securityProtocol;
}
return(result);
}
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 {_ipStopwatch.ElapsedMilliseconds.ToString("#,000", CultureInfo.InvariantCulture)}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);
}
}
