public static bool IsValidUrl(string url, bool needTestConn)
{
bool result = false;
if (string.IsNullOrEmpty(url))
{
return(result);
}
if (url.ToLower().Trim() == "about:blank")
{
return(true);
}
HttpWebResponse httpWebResponse = null;
try
{
string pattern = "^http[s]?://([\\w-]+\\.)*[\\w-]+(:[\\d]*)?(/.*)?$";
if (Regex.IsMatch(url, pattern, RegexOptions.IgnoreCase))
{
if (!needTestConn)
{
return(true);
}
HttpWebRequest httpWebRequest = WebRequestFactory.GetHttpWebRequest(url);
httpWebRequest.Timeout = 6000;
httpWebRequest.ReadWriteTimeout = 10000;
httpWebRequest.KeepAlive = false;
httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();
return(true);
}
return(result);
}
catch
{
return(false);
}
finally
{
httpWebResponse?.Close();
}
}
public static HttpWebRequest GetHttpWebRequest(string url)
{
return((HttpWebRequest)WebRequestFactory.GetWebRequest(url));
}