public void Put(string remotename, System.IO.Stream stream)
{
HttpWebRequest req = CreateRequest("/" + remotename, "");
req.Method = "PUT";
req.ContentType = "application/octet-stream";
//According to the MSDN docs, the timeout should only affect the
// req.GetRequestStream() or req.GetResponseStream() call, but apparently
// it means that the entire operation on the request stream must
// be completed within the limit
//We use Infinite, and rely on the ReadWriteTimeout value instead
req.Timeout = System.Threading.Timeout.Infinite;
try { req.ContentLength = stream.Length; }
catch { }
//If we can pre-calculate the MD5 hash before transmission, do so
/*if (stream.CanSeek)
{
System.Security.Cryptography.MD5 md5 = System.Security.Cryptography.MD5.Create();
req.Headers["ETag"] = Core.Utility.ByteArrayAsHexString(md5.ComputeHash(stream)).ToLower();
stream.Seek(0, System.IO.SeekOrigin.Begin);
using (System.IO.Stream s = req.GetRequestStream())
Core.Utility.CopyStream(stream, s);
//Reset the timeout to the default value of 100 seconds to
// avoid blocking the GetResponse() call
req.Timeout = 100000;
//The server handles the eTag verification for us, and gives an error if the hash was a mismatch
using (HttpWebResponse resp = (HttpWebResponse)req.GetResponse())
if ((int)resp.StatusCode >= 300)
throw new WebException(Strings.CloudFiles.FileUploadError, null, WebExceptionStatus.ProtocolError, resp);
}
else //Otherwise use a client-side calculation
*/
//TODO: We cannot use the local MD5 calculation, because that could involve a throttled read,
// and may invoke various events
{
string fileHash = null;
using (System.IO.Stream s = req.GetRequestStream())
using (MD5CalculatingStream mds = new MD5CalculatingStream(s))
{
Utility.Utility.CopyStream(stream, mds);
fileHash = mds.GetFinalHashString();
}
string md5Hash = null;
//Reset the timeout to the default value of 100 seconds to
// avoid blocking the GetResponse() call
req.Timeout = 100000;
//We need to verify the eTag locally
try
{
using (HttpWebResponse resp = (HttpWebResponse)req.GetResponse())
if ((int)resp.StatusCode >= 300)
throw new WebException(Strings.CloudFiles.FileUploadError, null, WebExceptionStatus.ProtocolError, resp);
else
md5Hash = resp.Headers["ETag"];
}
catch (WebException wex)
{
//Catch 404 and turn it into a FolderNotFound error
if (wex.Response is HttpWebResponse && ((HttpWebResponse)wex.Response).StatusCode == HttpStatusCode.NotFound)
throw new FolderMissingException(wex);
//Other error, just re-throw
throw;
}
if (md5Hash == null || md5Hash.ToLower() != fileHash.ToLower())
{
//Remove the broken file
try { Delete(remotename); }
catch { }
throw new Exception(Strings.CloudFiles.ETagVerificationError);
}
}
}
public void Get(string remotename, System.IO.Stream stream)
{
HttpWebRequest req = CreateRequest("/" + remotename, "");
req.Method = "GET";
//According to the MSDN docs, the timeout should only affect the
// req.GetRequestStream() or req.GetResponseStream() call, but apparently
// it means that the entire operation on the request stream must
// be completed within the limit
//We use Infinite, and rely on the ReadWriteTimeout value instead
req.Timeout = System.Threading.Timeout.Infinite;
using (WebResponse resp = req.GetResponse())
using (System.IO.Stream s = resp.GetResponseStream())
using (MD5CalculatingStream mds = new MD5CalculatingStream(s))
{
string md5Hash = resp.Headers["ETag"];
Utility.Utility.CopyStream(mds, stream);
if (mds.GetFinalHashString().ToLower() != md5Hash.ToLower())
throw new Exception(Strings.CloudFiles.ETagVerificationError);
}
}
