public static void Send(WebsiteMonitorConfiguration config,WebsiteMonitorConfiguration.WebsiteElement website,string errorMessage)
{
try
{
Console.WriteLine(website.Name + " appears to be down. Sending alert...");
MailAddress from = new MailAddress(config.FromEmailAddress, "Website Monitor");
MailMessage message = new MailMessage(from, new MailAddress(config.AlertEmailAddress))
{
Body = "The website " + website.Name + " appears to be down. " + errorMessage + " This means that it either returned a non 200 http response when requested, or the page content returned was unexpected.",
Subject = website.Name + " appears to be down"
};
SmtpClient client = new SmtpClient();
if (config.EmailuseSsl)
{
client.EnableSsl = true;
}
client.Send(message);
}
catch (Exception ex)
{
//DOH!, couldn't send the email
Console.WriteLine("Unable to send alert email "+ex);
}
}
private static bool CheckWebsite(WebsiteMonitorConfiguration.WebsiteElement website, Regex requiredContentRegex, Regex forbiddenContentRegex,out string message)
{
var request = (HttpWebRequest)WebRequest.Create(new Uri(website.Url,UriKind.Absolute));
request.AllowAutoRedirect = true;
try
{
var response = (HttpWebResponse)request.GetResponse();
if (response.StatusCode!=HttpStatusCode.OK)
{
message = "Expected 200 result, got " + (int) response.StatusCode;
return false;
}
else
{
if (requiredContentRegex!=null || forbiddenContentRegex!=null)
{
using (TextReader reader = new StreamReader(response.GetResponseStream()))
{
string content = reader.ReadToEnd();
if (requiredContentRegex!=null)
{
//if the required content was not found, then send an alert
if (!requiredContentRegex.IsMatch(content))
{
message = "Required content not found";
return false;
}
}
if (forbiddenContentRegex != null)
{
//if the forbidden content was found, then send an alert
if (forbiddenContentRegex.IsMatch(content))
{
message = "Forbidden content found";
return false;
}
}
}
}
}
}
catch (Exception ex)
{
message = "Unexpected exception "+ex;
return false;
}
message = "OK";
return true;
}