/// <summary>
/// Raises the <see cref="UriChecking" /> event.
/// </summary>
/// <param name="e">The <see cref="UriEventArgs" /> instance containing the event data.</param>
protected virtual void OnUriChecking(UriEventArgs e)
{
EventHandler <UriEventArgs> handler;
handler = (EventHandler <UriEventArgs>) this.Events[_eventUriChecking];
handler?.Invoke(this, e);
}
public async Task CheckUri(UriInfo uriInfo)
{
Uri uri;
UriEventArgs args;
UriStatus newStatus;
Exception error;
HttpStatusCode httpStatus;
uri = uriInfo.Uri;
if (!_settings.Statuses.TryGetValue(uri, out UriStatusInfo status))
{
status = new UriStatusInfo
{
LastChange = DateTimeOffset.UtcNow,
Status = UriStatus.Unknown,
Uri = uri
};
_settings.Statuses.Add(status);
}
args = new UriEventArgs(uri);
this.OnUriChecking(args);
(newStatus, httpStatus, error) = await this.GetUriStatus(uriInfo).ConfigureAwait(false);
if (error != null)
{
this.OnUriException(new UriExceptionEventArgs(uri, error));
}
this.UpdateStatus(status, httpStatus, newStatus);
this.OnUriChecked(args);
}
