public static Task <bool> ReadAsync([NotNull] this WebRequest thisValue, [NotNull] IOResponseSettings settings, CancellationToken token = default(CancellationToken))
{
token.ThrowIfCancellationRequested();
return(GetResponseAsync(thisValue, settings, token)
.ContinueWith(task =>
{
WebResponse response = task.Result;
if (response == null)
{
return false;
}
try
{
if (token.IsCancellationRequested)
{
return false;
}
return settings.OnResponseReceived?.Invoke(response) != false && response.ReadAsync(settings, token).Execute();
}
catch (Exception ex) when(settings.OnError != null)
{
settings.OnError(ex);
return false;
}
finally
{
ObjectHelper.Dispose(ref response);
thisValue.Abort();
}
}, token, TaskContinuationOptions.OnlyOnRanToCompletion, TaskScheduler.Default));
}
public static string GetTitle([NotNull] this WebRequest thisValue, IOResponseSettings settings = null)
{
WebResponse response = GetResponse(thisValue, settings);
if (response == null)
{
return(null);
}
try
{
return(settings?.OnResponseReceived?.Invoke(response) == false
? null
: response.GetTitle(settings));
}
catch (Exception ex) when(settings?.OnError != null)
{
settings.OnError(ex);
return(null);
}
finally
{
ObjectHelper.Dispose(ref response);
thisValue.Abort();
}
}
public static WebResponse GetResponse([NotNull] this WebRequest thisValue, IOResponseSettings settings = null)
{
if (settings == null)
{
return(thisValue.GetResponse());
}
WebResponse response = null;
int retries = 0;
int maxRetries = settings.Retries;
int timeBeforeRetries = settings.TimeBeforeRetries.TotalIntMilliseconds();
while (response == null && retries < maxRetries)
{
if (retries > 0 && timeBeforeRetries > 0)
{
TimeSpanHelper.WasteTime(timeBeforeRetries);
}
try
{
response = thisValue.GetResponse();
}
catch (Exception ex)
{
retries++;
if (retries >= maxRetries)
{
settings.OnError?.Invoke(ex);
}
}
}
return(response);
}
public static Stream GetStream([NotNull] this WebRequest thisValue, IOResponseSettings settings = null)
{
WebResponse response = GetResponse(thisValue, settings);
if (response == null)
{
return(null);
}
try
{
return(settings?.OnResponseReceived?.Invoke(response) == false ? null : response.GetStream());
}
catch (Exception ex) when(settings?.OnError != null)
{
settings.OnError(ex);
return(null);
}
}
public static bool Read([NotNull] this WebRequest thisValue, [NotNull] IOResponseSettings settings)
{
WebResponse response = GetResponse(thisValue, settings);
if (response == null)
{
return(false);
}
try
{
return(settings.OnResponseReceived?.Invoke(response) != false && response.Read(settings));
}
catch (Exception ex) when(settings.OnError != null)
{
settings.OnError(ex);
return(false);
}
finally
{
ObjectHelper.Dispose(ref response);
thisValue.Abort();
}
}
public static Task <WebResponse> GetResponseAsync([NotNull] this WebRequest thisValue, IOResponseSettings settings = null, CancellationToken token = default(CancellationToken))
{
if (token.IsCancellationRequested)
{
return(null);
}
if (settings == null)
{
return(thisValue.GetResponseAsync());
}
WebResponse response = null;
int retries = 0;
int maxRetries = settings.Retries;
int timeBeforeRetries = settings.TimeBeforeRetries.TotalIntMilliseconds();
while (!token.IsCancellationRequested && response == null && retries < maxRetries)
{
if (retries > 0 && timeBeforeRetries > 0)
{
TimeSpanHelper.WasteTime(timeBeforeRetries, token);
}
try
{
response = thisValue.GetResponseAsync().Execute();
}
catch (Exception ex)
{
retries++;
if (retries >= maxRetries)
{
settings.OnError?.Invoke(ex);
}
}
}
return(Task.FromResult(response));
}
public static Task <Stream> GetStreamAsync([NotNull] this WebRequest thisValue, IOResponseSettings settings = null, CancellationToken token = default(CancellationToken))
{
token.ThrowIfCancellationRequested();
return(GetResponseAsync(thisValue, settings, token)
.ContinueWith(task =>
{
WebResponse response = task.Result;
if (response == null)
{
return null;
}
try
{
if (token.IsCancellationRequested)
{
return null;
}
return settings?.OnResponseReceived?.Invoke(response) == false
? null
: response.GetStream();
}
catch (Exception ex) when(settings?.OnError != null)
{
settings.OnError(ex);
return null;
}
}, token, TaskContinuationOptions.OnlyOnRanToCompletion, TaskScheduler.Default));
}
public static Task <UrlSearchResult> SearchAsync([NotNull] this WebRequest thisValue, string searchFor, UrlSearchFlags flags, IOResponseSettings settings = null, CancellationToken token = default(CancellationToken))
{
token.ThrowIfCancellationRequested();
return(GetResponseAsync(thisValue, settings, token)
.ContinueWith(task =>
{
WebResponse response = task.Result;
if (response == null)
{
return null;
}
try
{
if (token.IsCancellationRequested)
{
return null;
}
if (settings?.OnResponseReceived != null)
{
if (!settings.OnResponseReceived(response))
{
return new UrlSearchResult {
Status = UrlSearchStatus.Failed
}
}
;
}
UrlSearchResult result = response.SearchAsync(searchFor, flags, settings, token).Execute();
token.ThrowIfCancellationRequested();
result.RedirectUri = thisValue.RequestUri != response.ResponseUri
? response.ResponseUri.IsAbsoluteUri || !thisValue.RequestUri.IsAbsoluteUri
? response.ResponseUri
: new Uri(thisValue.RequestUri, response.ResponseUri)
: thisValue.RequestUri;
return result;
}
catch (Exception ex)
{
settings?.OnError?.Invoke(ex);
return new UrlSearchResult
{
Status = UrlSearchStatus.Error,
Exception = ex
};
}
finally
{
ObjectHelper.Dispose(ref response);
thisValue.Abort();
}
}, token, TaskContinuationOptions.OnlyOnRanToCompletion, TaskScheduler.Default));
}
public static Task <UrlSearchResult> SearchAsync([NotNull] this WebRequest thisValue, UrlSearchFlags flags, IOResponseSettings settings = null, CancellationToken token = default(CancellationToken))
{
return(SearchAsync(thisValue, null, flags, settings, token));
}
public static UrlSearchResult Search([NotNull] this WebRequest thisValue, string searchFor, UrlSearchFlags flags, IOResponseSettings settings = null)
{
WebResponse response = GetResponse(thisValue, settings);
if (response == null)
{
return new UrlSearchResult {
Status = UrlSearchStatus.Failed
}
}
;
try
{
if (settings?.OnResponseReceived != null)
{
if (!settings.OnResponseReceived(response))
{
return new UrlSearchResult {
Status = UrlSearchStatus.Failed
}
}
;
}
UrlSearchResult result = response.Search(searchFor, flags, settings);
result.RedirectUri = thisValue.RequestUri != response.ResponseUri
? response.ResponseUri.IsAbsoluteUri || !thisValue.RequestUri.IsAbsoluteUri
? response.ResponseUri
: new Uri(thisValue.RequestUri, response.ResponseUri)
: thisValue.RequestUri;
return(result);
}
catch (Exception ex)
{
settings?.OnError?.Invoke(ex);
return(new UrlSearchResult
{
Status = UrlSearchStatus.Error,
Exception = ex
});
}
finally
{
ObjectHelper.Dispose(ref response);
thisValue.Abort();
}
}
public static UrlSearchResult Search([NotNull] this WebRequest thisValue, UrlSearchFlags flags, IOResponseSettings settings = null)
{
return(Search(thisValue, null, flags, settings));
}
public static Task <(string Title, string Buffer)> PeekAsync([NotNull] this WebRequest thisValue, IOResponseSettings settings = null, CancellationToken token = default(CancellationToken))
{
token.ThrowIfCancellationRequested();
return(GetResponseAsync(thisValue, settings, token)
.ContinueWith(task =>
{
WebResponse response = task.Result;
if (response == null)
{
return (null, null);
}
try
{
return token.IsCancellationRequested
? (null, null)
: settings?.OnResponseReceived?.Invoke(response) == false
? (null, null)
: response.PeekAsync(settings, token).Execute();
}
catch (Exception ex) when(settings?.OnError != null)
{
settings.OnError(ex);
return (null, null);
}
finally
{
ObjectHelper.Dispose(ref response);
thisValue.Abort();
}
}, token, TaskContinuationOptions.OnlyOnRanToCompletion, TaskScheduler.Default));
}
