I have a strange issue:
if (_Credential is null && OsEnvironment.IsLocal)
{
_Credential = GoogleCredential.FromFile(path);
}
return _Credential;
this code in my local PC stuck and after some time throw exception but in another computer (virtual computer) it run ok:
The type initializer for 'System.Security.Cryptography.CngKeyLite' threw an exception.
StackTrace: at System.Security.Cryptography.CngKeyLite.ImportKeyBlob(String blobType, ReadOnlySpan`1 keyBlob, Boolean en
crypted, ReadOnlySpan`1 password)
at System.Security.Cryptography.RSAImplementation.RSACng.ImportKeyBlob(Byte[] rsaBlob, Boolean includePrivate)
at System.Security.Cryptography.RSAImplementation.RSACng.ImportParameters(RSAParameters parameters)
at Google.Apis.Auth.OAuth2.ServiceAccountCredential.Initializer.FromPrivateKey(String privateKey)
at Google.Apis.Auth.OAuth2.DefaultCredentialProvider.CreateServiceAccountCredentialFromParameters(JsonCredentialParameters credentialPara
meters)
at Google.Apis.Auth.OAuth2.DefaultCredentialProvider.CreateDefaultCredentialFromParameters(JsonCredentialParameters credentialParameters)
at Google.Apis.Auth.OAuth2.DefaultCredentialProvider.CreateDefaultCredentialFromStream(Stream stream)
at Google.Apis.Auth.OAuth2.GoogleCredential.FromStream(Stream stream)
at Google.Apis.Auth.OAuth2.GoogleCredential.FromFile(String path)
at Irony.Anaconda.Helpers.CredentialManager.GetCredential(String path) in
one more things is that it dont work in my PC as console app (work great as webapi)
work with Google.Cloud.SecretManager.V1 1.5.0
Is anyone know how to fix it ?
I'm going to be modifying a script I've found at Rosetta Code which will check MAC addresses against the excellent api at http://api.macvendors.com.
I can do this in Python and Go without any problem but in C# (because it has to be run from a desktop via an Icon) I'm running into problems...not least of all is the fact that the code doesn't make a whole lot of sense to me. I've omitted (from here) the 'Using...' lines
class Program
{
static async Task<string> LookupMac(string MacAddress)
{
var uri = new Uri("http://api.macvendors.com/" + WebUtility.UrlEncode(MacAddress));
using (var wc = new HttpClient())
return await wc.GetStringAsync(uri);
}
static void Main(string[] args)
{
foreach (var mac in new string[] { "88:53:2E:67:07:BE", "FC:FB:FB:01:FA:21", "D4:F4:6F:C9:EF:8D" })
Console.WriteLine(mac + "\t" + LookupMac(mac).Result);
Console.ReadLine();
}
}
I'm falling over at the whole async side of things! When I try running the code here is the error message from Vis Studio:
System.AggregateException
HResult=0x80131500
Message=One or more errors occurred.
Source=mscorlib
StackTrace:
at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
at System.Threading.Tasks.Task`1.get_Result()
at GetMacVend.Program.Main(String[] args) in C:\Users\wildm\VisC#\GetMacVend\GetMacVend\Program.cs:line 24
Inner Exception 1:
TaskCanceledException: A task was canceled.
In our production server, we create thousands of pdf documents by wkhtmltopdf and sign them via iTextSharp using HSM. Most of the operation performed at night. But after we performed an update for multithreading we have been stack into a serious situation. After working a long time, our WCF service starts to give exception for every request:
System.IndexOutOfRangeException: Probable I/O race condition detected while copying memory. The I/O package is not thread safe by default. In multithreaded applications, a stream must be accessed in a thread-safe way, such as a thread-safe wrapper returned by TextReader's or TextWriter's Synchronized methods. This also applies to classes like StreamWriter and StreamReader.
at System.Buffer.InternalBlockCopy(Array src, Int32 srcOffsetBytes, Array dst, Int32 dstOffsetBytes, Int32 byteCount
at System.IO.StreamWriter.Write(Char[] buffer, Int32 index, Int32 count
at System.IO.TextWriter.SyncTextWriter.WriteLine(String value
at iTextSharp.text.pdf.PdfReader..ctor(IRandomAccessSource byteSource, Boolean partialRead, Byte[] ownerPassword, X509Certificate certificate, ICipherParameters certificateKey, Boolean closeSourceOnConstructorError
at iTextSharp.text.pdf.PdfReader..ctor(RandomAccessFileOrArray raf, Byte[] ownerPassword, Boolean partial
at Turkkep.Daemons.Crypto.PDFSignerService.sign(Byte[] sourceData, Stream destination
at Turkkep.Daemons.Crypto.PDFSignerService.Sign(Byte[] sourceData) Server stack trace: at System.ServiceModel.Channels.ServiceChannel.ThrowIfFaultUnderstood(Message reply, MessageFault fault, String action, MessageVersion version, FaultConverter faultConverter
at System.ServiceModel.Channels.ServiceChannel.HandleReply(ProxyOperationRuntime operation, ProxyRpc& rpc
at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout
at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation
at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message) Exception rethrown at [0]: at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type
at Turkkep.Core.Signature.IPDFSigner.Sign(Byte[] sourceData
at Turkkep.Shared.Signature.PDFSigner.Sign(Byte[] sourceData)
--- End of inner exception stack trace --- at Turkkep.Shared.Signature.PDFSigner.Sign(Byte[] sourceData
at Turkkep.Shared.Daemon.InvoiceWorker.getPdfDocument(InvoiceType12 ublInvoice, Int64 organization
at Turkkep.Shared.Daemon.InvoiceWorker.processEArchive(Invoice invoice, String signedInvoice, InvoiceType12 ublInvoice
at Turkkep.Shared.Daemon.InvoiceWorker.sendInvoice12(Invoice invoice)
Our signing code for WCF service is;
private void sign(byte[] sourceData, Stream destination)
{
RandomAccessFileOrArray source = new RandomAccessFileOrArray(sourceData);
using (var reader = new PdfReader(source, null))
{
using (var stamper = PdfStamper.CreateSignature(reader, destination, '\0'))
{
var appearance = stamper.SignatureAppearance;
appearance.Reason = _reason;
appearance.Location = _location;
appearance.SetVisibleSignature(new Rectangle(0, 0, 0, 0), 1, String.Format("TurkKEP-{0}-{1}-{2}", DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day));
var externalSigner = new PDFExternalSigner("SHA-256");
ICollection<X509Certificate> chain = getChain(externalSigner.GetActiveConnection());
MakeSignature.SignDetached(appearance, externalSigner, chain, null, null, null, _estimatedSize, CryptoStandard.CMS);
}
}
}
public byte[] Sign(byte[] sourceData)
{
try
{
using (MemoryStream destination = new MemoryStream())
{
sign(sourceData, destination);
return destination.ToArray();
}
}
catch (FaultException)
{
throw;
}
catch (Exception ex)
{
_logger.Error("PDFSignerService.Sign", ex);
throw new Exception(ex.ToString());
}
}
I think locking the PdfReader can solve the problem but I don't want to weak multithread power. Getting an exception for some messages is not a problem. In this situation service never works again until we restart it.
Note: Production server is up to date. We've just updated.
Edit: Last night we have caught similar exception with different stacktrace:
19.12.2017 04:03:08
System.Exception: PDF sign failed. Crypto service communication exception occured.
---> System.ServiceModel.FaultException`1[System.ServiceModel.ExceptionDetail]: System.IndexOutOfRangeException: Probable I/O race condition detected while copying memory. The I/O package is not thread safe by default. In multithreaded applications, a stream must be accessed in a thread-safe way, such as a thread-safe wrapper returned by TextReader's or TextWriter's Synchronized methods. This also applies to classes like StreamWriter and StreamReader.
at System.Buffer.InternalBlockCopy(Array src, Int32 srcOffsetBytes, Array dst, Int32 dstOffsetBytes, Int32 byteCount
at System.IO.StreamWriter.Write(Char[] buffer, Int32 index, Int32 count
at System.IO.TextWriter.SyncTextWriter.WriteLine(String value
at iTextSharp.text.pdf.PdfStamperImp.Close(PdfIndirectReference info, Int32 skipInfo
at iTextSharp.text.pdf.PdfStamperImp.Close(IDictionary`2 moreInfo
at iTextSharp.text.pdf.PdfSignatureAppearance.PreClose(Dictionary`2 exclusionSizes
at iTextSharp.text.pdf.security.MakeSignature.SignDetached(PdfSignatureAppearance sap, IExternalSignature externalSignature, ICollection`1 chain, ICollection`1 crlList, IOcspClient ocspClient, ITSAClient tsaClient, Int32 estimatedSize, CryptoStandard sigtype, SignaturePolicyIdentifier signaturePolicy
at Turkkep.Daemons.Crypto.PDFSignerService.sign(Byte[] sourceData, Stream destination
at Turkkep.Daemons.Crypto.PDFSignerService.Sign(Byte[] sourceData) Server stack trace: at System.ServiceModel.Channels.ServiceChannel.ThrowIfFaultUnderstood(Message reply, MessageFault fault, String action, MessageVersion version, FaultConverter faultConverter
at System.ServiceModel.Channels.ServiceChannel.HandleReply(ProxyOperationRuntime operation, ProxyRpc& rpc
After this exception service throws same exception for every call.
Now we are going to change code as following for moving the PdfStamper out of the using block.
private void sign(byte[] sourceData, Stream destination)
{
RandomAccessFileOrArray source = new RandomAccessFileOrArray(sourceData);
using (var reader = new PdfReader(source, null))
{
try
{
var stamper = PdfStamper.CreateSignature(reader, destination, '\0');
var appearance = stamper.SignatureAppearance;
appearance.Reason = _reason;
appearance.Location = _location;
appearance.SetVisibleSignature(new Rectangle(0, 0, 0, 0), 1, String.Format("TurkKEP-{0}-{1}-{2}", DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day));
var externalSigner = new PDFExternalSigner("SHA-256");
ICollection<X509Certificate> chain = getChain(externalSigner.GetActiveConnection());
MakeSignature.SignDetached(appearance, externalSigner, chain, null, null, null, _estimatedSize, CryptoStandard.CMS);
stamper.Dispose();
}
catch (Exception ex)
{
_logger.Error("Document sign failed unexpectedly.", ex);
throw new FaultException("Document sign failed unexpectedly. Exception: " + ex.ToString());
}
}
}
I am trying to use Memcached.ClientLibrary. I was able to make it work and everything but after a few hits (even before I get to see a page for the first time), I get this weird error about which I couldn't find any info when searching for it.
Error message:
Cannot write to a BufferedStream while the read buffer is not empty if the underlying stream is not seekable. Ensure that the stream underlying this BufferedStream can seek or avoid interleaving read and write operations on this BufferedStream.
Stack trace:
[NotSupportedException: Cannot write to a BufferedStream while the read buffer is not empty if the underlying stream is not seekable. Ensure that the stream underlying this BufferedStream can seek or avoid interleaving read and write operations on this BufferedStream.]
System.IO.BufferedStream.ClearReadBufferBeforeWrite() +10447571
System.IO.BufferedStream.Write(Byte[] array, Int32 offset, Int32 count) +163
Memcached.ClientLibrary.SockIO.Write(Byte[] bytes, Int32 offset, Int32 count) in C:\devroot\memcacheddotnet\trunk\clientlib\src\clientlib\SockIO.cs:411
Memcached.ClientLibrary.SockIO.Write(Byte[] bytes) in C:\devroot\memcacheddotnet\trunk\clientlib\src\clientlib\SockIO.cs:391
Memcached.ClientLibrary.MemcachedClient.Set(String cmdname, String key, Object obj, DateTime expiry, Object hashCode, Boolean asString) in C:\devroot\memcacheddotnet\trunk\clientlib\src\clientlib\MemCachedClient.cs:766
Memcached.ClientLibrary.MemcachedClient.Set(String key, Object value, DateTime expiry) in C:\devroot\memcacheddotnet\trunk\clientlib\src\clientlib\MemCachedClient.cs:465
Yuusoft.Julian.Server.Models.Utils.Caching.CacheWrapper.Add(CacheKey key, T o, CacheDependency dependencies, Nullable`1 expirationTime, CacheItemRemovedCallback callBack)
My code to initialize (static constructor):
SockIOPool pool = SockIOPool.GetInstance();
pool.SetServers(CacheWrapper.Servers);
pool.InitConnections = 3;
pool.MinConnections = 1;
pool.MaxConnections = 50;
pool.SocketConnectTimeout = 1000;
pool.SocketTimeout = 3000;
pool.MaintenanceSleep = 30;
pool.Failover = true;
pool.Nagle = false;
pool.Initialize();
// Code to set (the second is the one erroing - but not at the first hit?!)
MemcachedClient mc = new MemcachedClient();
mc.Set(key, o, expirationTime.Value);
// Code to get
MemcachedClient mc = new MemcachedClient();
object o = mc.Get(key);
In addition to this exception, following two exceptions were also present in my memcached log4net logs of Memcached.ClientLibrary (Error storing data in cache for key:<key with spaces> and Exception thrown while trying to get object from cache for key:<key with spaces>) I was able to resolve all these
three exceptions by ensuring that memcached key doesn't contain any whitespace.
Reference:https://groups.google.com/forum/#!topic/memcached/4WMcTbL8ZZY
Memcached Version: memcached-win32-1.4.4-14
I've been struggling with a problem when downloading very big files (>2GB) on Silverlight. My application is an out-of-browser Download Manager running with elevated permissions.
When the file reaches a certain ammount of data (2GB), it throws the following exception:
System.ArgumentOutOfRangeException was caught
Message=Specified argument was out of the range of valid values.
Parameter name: count
StackTrace:
in MS.Internal.InternalNetworkStream.BeginRead(Byte[] buffer, Int32 offset, Int32 count, AsyncCallback callback, Object state)
in MS.Internal.InternalNetworkStream.Read(Byte[] buffer, Int32 offset, Int32 count)
in MySolution.DM.Download.BeginResponseCallback(IAsyncResult ar)
InnerException:
Null
The only clue I have is this site, who shows the BeginCode implementation. This exception only occurs when count is < then 0.
My code
/* "Target" is a File object. "source" is a Stream object */
var buffer = new byte[64 * 1024];
int bytesRead;
Target.Seek(0, SeekOrigin.End); // The file might exists when resuming a download
/* The exception throws from inside "source.Read" */
while ((bytesRead = source.Read(buffer, 0, buffer.Length)) > 0)
{
Target.Write(buffer, 0, bytesRead);
_fileBytes = Target.Length;
Deployment.Current.Dispatcher.BeginInvoke(() => { DownloadPercentual = Double.Parse(Math.Round((decimal)(_fileBytes / (_totalSize / 100)), 5).ToString()); });
}
Target.Close();
logFile.Close();
The error occurs with different kind of files, and they come from public buckets on Amazon S3. (with regular http requests).
I searched a bit and it looks like this is a known limitation in Silverlight. One possible workaround is to perform the download in multiple sections, each smaller than 2GB, using the Range header.