/// <summary>
/// Asynchronous download method implementation.
/// </summary>
/// <param name="task">The DownloadTask to process.</param>
public void BeginDownload(DownloadTask task)
{
currentTask = task;
// If we resume way too often, just return
if (CheckForResumeAndProceed(currentTask))
{
return;
}
Uri reqUri = new Uri(task.DownloadItem.Enclosure.Url);
int priority = 10;
RequestParameter reqParam = RequestParameter.Create(reqUri, FeedSource.UserAgentString(String.Empty),
task.DownloadItem.Proxy, task.DownloadItem.Credentials,
DateTime.MinValue, null);
// global cookie handling:
reqParam.SetCookies = FeedSource.SetCookies;
state = BackgroundDownloadManager.AsyncWebRequest.QueueRequest(reqParam,
OnRequestStart,
OnRequestComplete,
OnRequestException,
OnRequestProgress,
priority);
}
/// <summary>
/// Synchronous download method implementation.
/// </summary>
/// <param name="task">The DownloadTask to process.</param>
/// <param name="maxWaitTime">The maximum wait time.</param>
public void Download(DownloadTask task, TimeSpan maxWaitTime)
{
currentTask = task;
// If we resume way too often, just return
if (CheckForResumeAndProceed(currentTask))
{
return;
}
WebResponse response = SyncWebRequest.GetResponse(HttpMethod.Get, task.DownloadItem.Enclosure.Url,
task.DownloadItem.Credentials,
FeedSource.UserAgentString(String.Empty),
task.DownloadItem.Proxy,
DateTime.MinValue,
null /* eTag */,
Convert.ToInt32(maxWaitTime.TotalSeconds),
null /* cookie */, null /* body */, null /* newsGatorAPIToken */);
OnRequestComplete(new Uri(task.DownloadItem.Enclosure.Url), response.GetResponseStream(), response, null, null,
DateTime.MinValue, RequestResult.OK, 0);
}
/// <summary>
/// Build a full user agent string (template + <paramref name="userAgent"/> or get the global default one.
/// </summary>
/// <param name="userAgent">Can be null</param>
/// <returns></returns>
protected static string FullUserAgent(string userAgent)
{
return(FeedSource.UserAgentString(userAgent));
}
