|
public Get ( |
||
| uri | ||
| start | long | |
| length | long | |
| return | ||
private static long GetSizeOfResource(Uri url)
{
var client = new SimpleHttpGetByRangeClient(url);
var response = client.Get(url, 0, 1);
if (response != null)
{
if (response.IsStatusCodeRedirect && !String.IsNullOrWhiteSpace(response.Location))
{
if (response.Location != url.AbsoluteUri)
{
url = new Uri(response.Location);
Console.WriteLine("Detected Redirect: " + url);
GetSizeOfResource(url);
}
else
{
throw new ArgumentException("Supplied Url has no source");
}
}
else if (response.WasSuccessful && response.ContentRangeLength.HasValue && response.ContentRangeLength >= 0)
{
return(response.ContentRangeLength.Value);
}
else
{
throw new Exception("Response was not successful, status code: " + response.StatusCode);
}
}
throw new Exception("Response was not successful, status code: unknown");
}
/// <summary>
/// Returns the length of the resource by doing a quick get request
/// </summary>
/// <param name="uri"></param>
/// <returns></returns>
public static long GetContentLength(this Uri uri)
{
var retry = 0;
var maxRetries = 5;
var maxTimeOut = 600;
while (retry++ <= maxRetries)
{
try
{
var client = new SimpleHttpGetByRangeClient(uri);
var response = client.Get(uri, 0, 1);
if (response != null)
{
if (response.IsStatusCodeRedirect && !String.IsNullOrWhiteSpace(response.Location))
{
if (response.Location != uri.AbsoluteUri)
{
uri = new Uri(response.Location);
return(GetContentLength(uri));
}
else
{
throw new ArgumentException("Supplied Url has no source");
}
}
else if (response.WasSuccessful && response.ContentRangeLength >= 0)
{
return(response.ContentRangeLength.Value);
}
else if (response.StatusCode == 416) //usually means zero byte file
{
return(response.ContentLength);
}
else if (response.StatusCode == 404)
{
// we don't retry 404
return(retry = maxRetries);
}
else
{
throw new Exception("Response was not successful, status code: " + response.StatusCode);
}
}
}
catch
{
if (retry > maxRetries)
{
throw;
}
var delay = (int)Math.Min(maxTimeOut, Math.Pow(retry, 5));
System.Threading.Thread.Sleep(1000 * delay);
}
}
throw new Exception("Response was not successful");
}
/// <summary>
/// Returns the length of the resource by doing a quick get request
/// </summary>
/// <param name="uri"></param>
/// <returns></returns>
public static long GetContentLength(this Uri uri)
{
var retry = 0;
var maxRetries = 5;
var maxTimeOut = 600;
while (retry++ <= maxRetries)
{
try
{
var client = new SimpleHttpGetByRangeClient(uri);
var response = client.Get(uri, 0, 1);
if (response != null)
{
if (response.IsStatusCodeRedirect && !String.IsNullOrWhiteSpace(response.Location))
{
if (response.Location != uri.AbsoluteUri)
{
uri = new Uri(response.Location);
return GetContentLength(uri);
}
else
{
throw new ArgumentException("Supplied Url has no source");
}
}
else if (response.WasSuccessful && response.ContentRangeLength >= 0)
{
return response.ContentRangeLength.Value;
}
else if (response.StatusCode == 416) //usually means zero byte file
{
return response.ContentLength;
}
else if (response.StatusCode == 404)
{
// we don't retry 404
return retry = maxRetries;
}
else
{
throw new Exception("Response was not successful, status code: " + response.StatusCode);
}
}
}
catch
{
if (retry > maxRetries)
throw;
var delay = (int) Math.Min(maxTimeOut, Math.Pow(retry, 5));
System.Threading.Thread.Sleep(1000 * delay);
}
}
throw new Exception("Response was not successful");
}
internal void GetChunk(long start, long end, uint retryCount = 2)
{
using (var client = new SimpleHttpGetByRangeClient(new Uri(url)))
{
SimpleHttpResponse response = client.Get(start, end - start);
if (response.WasSuccessful)
{
HandleResponse(response);
}
else if (retryCount > 0)
{
//retry
GetChunk(start, end, --retryCount);
}
else
{
throw new HttpException(string.Format("Could not retrieve content from {0} between {1} and {2}",
url, start, end));
}
}
}
private static long GetSizeOfResource(Uri url)
{
var client = new SimpleHttpGetByRangeClient(url);
var response = client.Get(url, 0, 1);
if (response != null)
{
if (response.IsStatusCodeRedirect && !String.IsNullOrWhiteSpace(response.Location))
{
if (response.Location != url.AbsoluteUri)
{
url = new Uri(response.Location);
Console.WriteLine("Detected Redirect: " + url);
GetSizeOfResource(url);
}
else
{
throw new ArgumentException("Supplied Url has no source");
}
}
else if (response.WasSuccessful && response.ContentRangeLength.HasValue && response.ContentRangeLength >= 0)
{
return response.ContentRangeLength.Value;
}
else
{
throw new Exception("Response was not successful, status code: " + response.StatusCode);
}
}
throw new Exception("Response was not successful, status code: unknown");
}
internal void GetChunk(long start, long end, uint retryCount = 2)
{
using (var client = new SimpleHttpGetByRangeClient(new Uri(url)))
{
SimpleHttpResponse response = client.Get(start, end - start);
if (response.WasSuccessful)
{
HandleResponse(response);
}
else if (retryCount > 0)
{
//retry
GetChunk(start, end, --retryCount);
}
else
{
throw new HttpException(string.Format("Could not retrieve content from {0} between {1} and {2}",
url, start, end));
}
}
}
