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• What is the best idea to put available OS (linux) and Web application to client?

  - by Fernando Costa

  After a year programming a web based business management system, I got my idea divided into two differents ways to do what I'm doing... I will try to explain in follow lines: First I will describe my enviroment: Webserver: apache, ngynx Programming Language: PHP, Shell Script, Java Script, SQL Database: Mysql Operating System: Linux, UNIX (All Distros) (If manually configured works on windows) Authentication Server: FreeRadius First situation I have my application running on this enviroment that I had just described before, as my application is a SaaS app, then I have my own server to run it all and customers pay to use it as a service accessed by webbrowser. Second Situation The same as before but with one big difference, everything (environment) is installed in the customer, then I need to cryptography all my codes (It includes PHP and Shell Scripts). I think this situation is most difficulty, but I would like to hear it from different points of view.

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• What's the recommend way to enable disable services?

  - by NES

  I read about how to enable and disable services in Ubuntu and it seems that there are different possibilities manage theme? The first method i found is update-rc.d to add new services to startup, which aims on the /etc/init.d folder and it's contents. The other one i found is the way to edit .conf the files in /etc/init folder. What's the recommended way to enable / disable / add services and why? Could you please give a short bulletproof step by step example how to add a service xyz in Ubuntu and enable and disable it?

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• What's the recommend way to enable / disable services?

  - by NES

  I read about how to enable and disable services in Ubuntu and it seems that there are different possibilities manage theme? The first method i found is update-rc.d to add new services to startup, which aims on the /etc/init.d folder and it's contents. The other one i found is the way to edit .conf the files in /etc/init folder. What's the recommended way to enable / disable / add services and why? Could you please give a short bulletproof step by step example how to add a service xyz in Ubuntu and enable and disable it?

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• onServiceConnected never called after bindService method

  - by Tobia Loschiavo

  Hi, I have a particular situation: a service started by a broadcast receiver starts an activity. I want to make it possible for this activity to communicate back to the service. I have chosen to use AIDL to make it possible. Everything seems works good except for bindService() method called in onCreate() of the activity. bindService(), in fact, throws a null pointer exception because onServiceConnected() is never called while onBind() method of the service is. Anyway bindService() returns true. The service is obviously active because it starts the activity. I know that calling an activity from a service could sound strange, but unfortunately this is the only way to have speech recognition in a service. Thanks in advance

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• Failed sending bytes array to JAX-WS web service on Axis

  - by user304309

  Hi I have made a small example to show my problem. Here is my web-service: package service; import javax.jws.WebMethod; import javax.jws.WebService; @WebService public class BytesService { @WebMethod public String redirectString(String string){ return string+" - is what you sended"; } @WebMethod public byte[] redirectBytes(byte[] bytes) { System.out.println("### redirectBytes"); System.out.println("### bytes lenght:" + bytes.length); System.out.println("### message" + new String(bytes)); return bytes; } @WebMethod public byte[] genBytes() { byte[] bytes = "Hello".getBytes(); return bytes; } } I pack it in jar file and store in "axis2-1.5.1/repository/servicejars" folder. Then I generate client Proxy using Eclipse for EE default utils. And use it in my code in the following way: BytesService service = new BytesServiceProxy(); System.out.println("Redirect string"); System.out.println(service.redirectString("Hello")); System.out.println("Redirect bytes"); byte[] param = { (byte)21, (byte)22, (byte)23 }; System.out.println(param.length); param = service.redirectBytes(param); System.out.println(param.length); System.out.println("Gen bytes"); param = service.genBytes(); System.out.println(param.length); And here is what my client prints: Redirect string Hello - is what you sended Redirect bytes 3 0 Gen bytes 5 And on server I have: ### redirectBytes ### bytes lenght:0 ### message So byte array can normally be transfered from service, but is not accepted from the client. And it works fine with strings. Now I use Base64Encoder, but I dislike this solution.

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• Reusing service proxies

  - by Hadi Eskandari

  I have a set of webservices that I connect to using Silverlight Client. I use proxies generated by "Add service reference" or SLSVCUTIL.exe tool to connect to this service. So far, I have only used one single service. Now I want to use another service on the same server. The problem is that, first service generated set of proxy classes for me, and second service will reuse the same set of classes (plus extra services/classes), e.g. CustomerService.SaveCustomer(Customer customer); OrderService.CheckCustomerLevel(Customer customer); The problem is when I add reference to the second service, I can not reuse the same namespace for the second one (VS error), and when I use a different namespace, the generated classes, although are essentially the same, reside in different namespace, hence different and I end up with two Customer classes in two different namespaces. Anyway around this? I just neeed to have two set of services, reusing the Customer class. I have already tried "reuse types in assembly / all assemblies" check mark when generating proxy classes, but it seems to have no effect. any help is greatly appreciated.

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• java RMI newbie-- some basic questions about SSL and auth/.rate limiting an RMI service

  - by Arvind

  I am trying to work to secure a java based RMI service using SSL. I have some basic questions about the capabilities of using SSL. Specifically, from what I understand, the client and server connecting via SSL will need to have appropriate credential certificates in both client and server, for a client to be granted access to the server. Am I correct in my understanding? Also, what I want to know is, can a person who is already using my RMI service and has access to a client machine , make a copy of the certificate in the client machine to other client machines-- and then invoke my RMI service from those other machines as well? How do I prevent such a situation from occurring? I mean, in a REST API you can use OAuth authentication, can we have some kind of authentication in an RMI Service? Also, can I possibly limit usage of the RMI service? For eg, a specific client may be allowed to make only 5000 calls per day to my RMI service, and if he makes more calls the calls occurring after the 5000 calls limit are all denied? How do I do such rate limiting and/or authentication for my RMI Service?

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• What does this WCF error mean: "Custom tool warning: Cannot import wsdl:portType"

  - by stiank81

  I created a WCF service library project in my solution, and have service references to this. I use the services from a class library, so I have references from my WPF application project in addition to the class library. Services are set up straight forward - only changed to get async service functions. Everything was working fine - until I wanted to update my service references. It failed, so I eventually rolled back and retried, but it failed even then! So - updating the service references fails without doing any changes to it. Why?! The error I get is this one: Custom tool error: Failed to generate code for the service reference 'MyServiceReference'. Please check other error and warning messages for details. The warning gives more information: Custom tool warning: Cannot import wsdl:portType Detail: An exception was thrown while running a WSDL import extension: System.ServiceModel.Description.DataContractSerializerMessageContractImporter Error: List of referenced types contains more than one type with data contract name 'Patient' in namespace 'http://schemas.datacontract.org/2004/07/MyApp.Model'. Need to exclude all but one of the following types. Only matching types can be valid references: "MyApp.Dashboard.MyServiceReference.Patient, Medski.Dashboard, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" (matching) "MyApp.Model.Patient, MyApp.Model, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" (matching) XPath to Error Source: //wsdl:definitions[@targetNamespace='http://tempuri.org/']/wsdl:portType[@name='ISomeService'] There are two similar warnings too saying: Custom tool warning: Cannot import wsdl:binding Detail: There was an error importing a wsdl:portType that the wsdl:binding is dependent on. XPath to wsdl:portType: //wsdl:definitions[@targetNamespace='http://tempuri.org/']/wsdl:portType[@name='ISomeService'] XPath to Error Source: //wsdl:definitions[@targetNamespace='http://tempuri.org/']/wsdl:binding[@name='WSHttpBinding_ISomeService'] And the same for: Custom tool warning: Cannot import wsdl:port .. I find this all confusing.. I don't have a Patient class on the client side Dashboard except the one I got through the service reference. So what does it mean? And why does it suddenly show? Remember: I didn't even change anything! Now, the solution to this was found here, but without an explanation to what this means. So; in the "Configure service reference" for the service I uncheck the "Reuse types in the referenced assemblies" checkbox. Rebuilding now it all works fine without problems. But what did I really change? Will this make an impact on my application? And when should one uncheck this? I do want to reuse the types I've set up DataContract on, but no more. Will I still get access to those without this checked?

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• Windows Service Conundrum

  - by Paul Johnson

  All, I have a Custom object which I have written using VB.NET (.net 2.0). The object instantiates its own threading.timer object and carries out a number of background process including periodic interrogation of an oracle database and delivery of emails via smtp according to data detected in the database. The following is the code implemented in the windows service class Public Class IncidentManagerService 'Fakes Private _fakeRepoFactory As IRepoFactory Private _incidentRepo As FakeIncidentRepo Private _incidentDefinitionRepo As FakeIncidentDefinitionRepo Private _incManager As IncidentManager.Session 'Real Private _started As Boolean = False Private _repoFactory As New NHibernateRepoFactory Private _psalertsEventRepo As IPsalertsEventRepo = _repoFactory.GetPsalertsEventRepo() Protected Overrides Sub OnStart(ByVal args() As String) ' Add code here to start your service. This method should set things ' in motion so your service can do its work. If Not _started Then Startup() _started = True End If End Sub Protected Overrides Sub OnStop() 'Tear down class variables in order to ensure the service stops cleanly _incManager.Dispose() _incidentDefinitionRepo = Nothing _incidentRepo = Nothing _fakeRepoFactory = Nothing _repoFactory = Nothing End Sub Private Sub Startup() Dim incidents As IList(Of Incident) = Nothing Dim incidentFactory As New IncidentFactory incidents = IncidentFactory.GetTwoFakeIncidents _repoFactory = New NHibernateRepoFactory _fakeRepoFactory = New FakeRepoFactory(incidents) _incidentRepo = _fakeRepoFactory.GetIncidentRepo _incidentDefinitionRepo = _fakeRepoFactory.GetIncidentDefinitionRepo 'Start an incident manager session _incManager = New IncidentManager.Session(_incidentRepo, _incidentDefinitionRepo, _psalertsEventRepo) _incManager.Start() End Sub End Class After a little bit of experimentation I arrived at the above code in the OnStart method. All functionality passed testing when deployed from VS2005 on my development PC, however when deployed on a true target machine, the service would not start and responds with the following message: "The service on local computer started and then stopped..." Am I going about this the correct way? If not how can I best implement my incident manager within the confines of the Windows Service class. It seems pointless to implement a timer for the incidentmanager because this already implements its own timer... Any assistance much appreciated. Kind Regards Paul J.

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• How can I reject a Windows "Service Stop" request in ATL 7?

  - by Matt Dillard

  I have a Windows service built upon ATL 7's CAtlServiceModuleT class. This service serves up COM objects that are used by various applications on the system, and these other applications naturally start getting errors if the service is stopped while they are still running. I know that ATL DLLs solve this problem by returning S_OK in DllCanUnloadNow() if CComModule's GetLockCount() returns 0. That is, it checks to make sure no one is currently using any COM objects served up by the DLL. I want equivalent functionality in the service. Here is what I've done in my override of CAtlServiceModuleT::OnStop(): void CMyServiceModule::OnStop() { if( GetLockCount() != 0 ) { return; } BaseClass::OnStop(); } Now, when the user attempts to Stop the service from the Services panel, they are presented with an error message: Windows could not stop the XYZ service on Local Computer. The service did not return an error. This could be an internal Windows error or an internal service error. If the problem persists, contact your system administrator. The Stop request is indeed refused, but it appears to put the service in a bad state. A second Stop request results in this error message: Windows could not stop the XYZ service on Local Computer. Error 1061: The service cannot accept control messages at this time. Interestingly, the service does actually stop this time (although I'd rather it not, since there are still outstanding COM references). I have two questions: Is it considered bad practice for a service to refuse to stop when asked? Is there a polite way to signify that the Stop request is being refused; one that doesn't put the Service into a bad state?

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• Is it safe to reuse javax.xml.ws.Service objects

  - by Noel Ang

  I have JAX-WS style web service client that was auto-generated with the NetBeans IDE. The generated proxy factory (extends javax.xml.ws.Service) delegates proxy creation to the various Service.getPort methods. The application that I am maintaining instantiates the factory and obtains a proxy each time it calls the targetted service. Creating the new proxy factory instances repeatedly has been shown to be expensive, given that the WSDL documentation supplied to the factory constructor, an HTTP URI, is re-retrieved for each instantiation. We had success in improving the performance by caching the WSDL. But this has ugly maintenance and packaging implications for us. I would like to explore the suitability of caching the proxy factory itself. Is it safe, e.g., can two different client classes, executing on the same JVM and targetting the same web service, safely use the same factory to obtain distinct proxy objects (or a shared, reentrant one)? I've been unable to find guidance from either the JAX-WS specification nor the javax.xml.ws API documentation. The factory-proxy multiplicity is unclear to me. Having Service.getPort rather than Service.createPort does not inspire confidence.

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• SPI and GDO, what is GDO an acronym for?

  - by bjarkef

  In connection with a SPI bus there is typically a number of GDO pins used for interrupting the master or the slave of the SPI connection. But what is GDO an acronym for?

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• Upgrade .NET 1.1 WinForm/Service to what?

  - by Conor

  Hi Folks, We have a current WinForm/Windows Service running in .NET 1.1 out on various customer sites that is getting data from internal systems, transforming it and then calling a Web Service synchronously. This client app will no longer work in Vista or Windows 7 etc.. and its time to update!! I was looking for ideas on what I could do here, I didn't write the App and I have the Business team telling me they want the world but I need to be realistic :) Things the service must be able to do: - Handle multiple formats from internal system and transform to a schema SAP, ERP etc.. - Run silently and just work on customer sites (it does currently albeit .NET 1.1) - The Customers are unable to call our web service from their sites as they are not technical enough. - Upgrade it's self when updates occur (currently don't have this capability) Is there anything I can do here other than upgrade the service to run in .NET and add a few more transformation capabilities e..g they want the customer to be able to give us a flat file, an xml file, a csv and the service transforms it and calls the Web Service? I was hoping in this day and age we could use the Web, but automating this 100% rules it out in my eyes? I could be totally wrong!! Any help would be gratefully appreciated! Cheers. Conor

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• unexpected behaviour of object stored in web service Session

  - by draconis

  Hi. I'm using Session variables inside a web service to maintain state between successive method calls by an external application called QBWC. I set this up by decorating my web service methods with this attribute: [WebMethod(EnableSession = true)] I'm using the Session variable to store an instance of a custom object called QueueManager. The QueueManager has a property called ChangeQueue which looks like this: [Serializable] public class QueueManager { ... public Queue<QBChange> ChangeQueue { get; set; } ... where QBChange is a custom business object belonging to my web service. Now, every time I get a call to a method in my web service, I use this code to retrieve my QueueManager object and access my queue: QueueManager qm = (QueueManager)Session[ticket]; then I remove an object from the queue, using qm.dequeue() and then I save the modified query manager object (modified because it contains one less object in the queue) back to the Session variable, like so: Session[ticket] = qm; ready for the next web service method call using the same ticket. Now here's the thing: if I comment out this last line //Session[ticket] = qm; , then the web service behaves exactly the same way, reducing the size of the queue between method calls. Now why is that? The web service seems to be updating a class contained in serialized form in a Session variable without being asked to. Why would it do that? When I deserialize my Queuemanager object, does the qm variable hold a reference to the serialized object inside the Session[ticket] variable?? This seems very unlikely.

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• Access problems with IIS 7 and a WCF service

  - by Steve

  I have a Silverlight app that calls a WCF service, the service calls some stored procedures in an SQL db using Visual Studio 2008's Link to SQL class and returns the information to whatever called it. I have set up the compiled project (website with embedded app and the WCF service) on an remote IIS 7 server. I recompiled my local copy to use the WCF service that is now hosted on the IIS box and not the one on the local dev server that Visual Studio provides, if I use the local version of the website (hosted on the dev server, and using the remote SCF service) it is able to make calls it needs and display the information. However, if I use the website that is being hosted by the remote IIS server, the app will not get the information it needs from the service. On the IIS server I have the application pool and the website running under my credentials, which have access to the database. Users connecting to the webpage use anonymous authentication. Any ideas as to why I can only access the service when running from the dev server and not through the remotely hosted webpage are appreciated. If anything needs clarification, please ask.

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• Is a Service Bus a good option to communicate with multiple external servers?

  - by PFreitas

  We are developing an application that communicates, via web services or TCP/IP sockets, with multiple servers (up to 50 different external companies). Basically, the exchanged messages are the same (XML), but depending on the inputs of our application we should call 1 or more external servers. The benefits we would expect of introducing a Service Bus in the architecture would be: 1- Remove the need to manage all point-to-point configurations (all the 50 endpoints); 2- Simplify the communication layer of our application by having only one server to talk to; Is a Service Bus a good architectural option for this scenario? What is the best (simplest) Service Bus for this kind of communication? I read a few MSDN articles on Azure Service Bus Relay, but it didn’t seem to fit our needs. Am I wrong? Thanks for your help.

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• Disable update on battery percentage

  - by Kris B

  I have a service that performs background updates. I want to give the user the the option to disable the updates when their battery percentage reaches a certain level. From my research, I'm going to use a receiver in the onCreate method of my Service class, eg: public class MainService extends Service { @Override public void onCreate() { this.registerReceiver(this.BatInfoReceiver, new IntentFilter(Intent.ACTION_BATTERY_CHANGED)); } private BroadcastReceiver BatInfoReceiver = new BroadcastReceiver(){ @Override public void onReceive(Context arg0, Intent intent) { int level = intent.getIntExtra("level", 0); } }; } I'm assuming the best practice is to leave the service running and check the battery level in the service and not perform the CPU intensive code based on the percentage? I don't actually stop the service itself and start it up again, based on the battery percentage?

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• Windows service: Listening on socket while running as LocalSystem

  - by Socob

  I'm writing a small server-like program in C for Windows (using MinGW/GCC, testing on Windows 7) which is eventually supposed to run as a service with the LocalSystem account. I am creating a socket, and using Windows Sockets bind(), listen() and accept() to listen for incoming connections. If I run the application from the command line (i.e. not as a service, but as a normal user), I have no problems connecting to it from external IPs. However, if I run the program as a service with the LocalSystem account, I can only connect to the service from my own PC, either with 127.0.0.1 or my local address, 192.168.1.80 (I'm behind a router in a small local network). Neither external IPs nor other PCs in the same local network, using my local address, can connect now, even though there were no problems without running as a service. Now, I've heard that networking is handled differently or even not accessible (?) when running as LocalSystem or LocalService or that services cannot access both the desktop and the network (note: my service is not interactive) at the same time due to security considerations. Essentially, I need to find out what's going wrong/how to listen for connections in a service. Is running as NetworkService the same as running as LocalSystem, but with network access? Surely there must be servers that can run as background services, so how do they do it?

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• Android Service Testing with messages

  - by Sandeep Dhull

  I have a service which does its work(perform network operation) depending upon the type of message(message.what) property of the message. Then it returns the resoponse, also as a message to the requesting component(depending upon the message.replyTo). So, i am trying to write the testcases.. But how????? My Architecture of service is like this: 1) A component(ex. Activity) bounds to the service. 2) The component sends message to the Service(using Messenger). 3) The service has a nested class that handles the messages and execute the network call and returns a response as message to the sender(who initially sent the message and using its replyTo property). Now to test this.. i am using Junit test cases.. So , in that .. 1) in setUp() i am binding to the service.. 2) on testBusinessLogic() . i am sending the message to the service .. Now problem is where to get the response message.

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• Announcing the release of the Windows Azure SDK 2.1 for .NET

  - by ScottGu

  Today we released the v2.1 update of the Windows Azure SDK for .NET.  This is a major refresh of the Windows Azure SDK and it includes some great new features and enhancements. These new capabilities include: Visual Studio 2013 Preview Support: The Windows Azure SDK now supports using the new VS 2013 Preview Visual Studio 2013 VM Image: Windows Azure now has a built-in VM image that you can use to host and develop with VS 2013 in the cloud Visual Studio Server Explorer Enhancements: Redesigned with improved filtering and auto-loading of subscription resources Virtual Machines: Start and Stop VM’s w/suspend billing directly from within Visual Studio Cloud Services: New Emulator Express option with reduced footprint and Run as Normal User support Service Bus: New high availability options, Notification Hub support, Improved VS tooling PowerShell Automation: Lots of new PowerShell commands for automating Web Sites, Cloud Services, VMs and more All of these SDK enhancements are now available to start using immediately and you can download the SDK from the Windows Azure .NET Developer Center.  Visual Studio’s Team Foundation Service (http://tfs.visualstudio.com/) has also been updated to support today’s SDK 2.1 release, and the SDK 2.1 features can now be used with it (including with automated builds + tests). Below are more details on the new features and capabilities released today: Visual Studio 2013 Preview Support Today’s Window Azure SDK 2.1 release adds support for the recent Visual Studio 2013 Preview. The 2.1 SDK also works with Visual Studio 2010 and Visual Studio 2012, and works side by side with the previous Windows Azure SDK 1.8 and 2.0 releases. To install the Windows Azure SDK 2.1 on your local computer, choose the “install the sdk” link from the Windows Azure .NET Developer Center. Then, chose which version of Visual Studio you want to use it with.  Clicking the third link will install the SDK with the latest VS 2013 Preview: If you don’t already have the Visual Studio 2013 Preview installed on your machine, this will also install Visual Studio Express 2013 Preview for Web. Visual Studio 2013 VM Image Hosted in the Cloud One of the requests we’ve heard from several customers has been to have the ability to host Visual Studio within the cloud (avoiding the need to install anything locally on your computer). With today’s SDK update we’ve added a new VM image to the Windows Azure VM Gallery that has Visual Studio Ultimate 2013 Preview, SharePoint 2013, SQL Server 2012 Express and the Windows Azure 2.1 SDK already installed on it.  This provides a really easy way to create a development environment in the cloud with the latest tools. With the recent shutdown and suspend billing feature we shipped on Windows Azure last month, you can spin up the image only when you want to do active development, and then shut down the virtual machine and not have to worry about usage charges while the virtual machine is not in use. You can create your own VS image in the cloud by using the New->Compute->Virtual Machine->From Gallery menu within the Windows Azure Management Portal, and then by selecting the “Visual Studio Ultimate 2013 Preview” template: Visual Studio Server Explorer: Improved Filtering/Management of Subscription Resources With the Windows Azure SDK 2.1 release you’ll notice significant improvements in the Visual Studio Server Explorer. The explorer has been redesigned so that all Windows Azure services are now contained under a single Windows Azure node.  From the top level node you can now manage your Windows Azure credentials, import a subscription file or filter Server Explorer to only show services from particular subscriptions or regions. Note: The Web Sites and Mobile Services nodes will appear outside the Windows Azure Node until the final release of VS 2013. If you have installed the ASP.NET and Web Tools Preview Refresh, though, the Web Sites node will appear inside the Windows Azure node even with the VS 2013 Preview. Once your subscription information is added, Windows Azure services from all your subscriptions are automatically enumerated in the Server Explorer. You no longer need to manually add services to Server Explorer individually. This provides a convenient way of viewing all of your cloud services, storage accounts, service bus namespaces, virtual machines, and web sites from one location: Subscription and Region Filtering Support Using the Windows Azure node in Server Explorer, you can also now filter your Windows Azure services in the Server Explorer by the subscription or region they are in.  If you have multiple subscriptions but need to focus your attention to just a few subscription for some period of time, this a handy way to hide the services from other subscriptions view until they become relevant. You can do the same sort of filtering by region. To enable this, just select “Filter Services” from the context menu on the Windows Azure node: Then choose the subscriptions and/or regions you want to filter by. In the below example, I’ve decided to show services from my pay-as-you-go subscription within the East US region: Visual Studio will then automatically filter the items that show up in the Server Explorer appropriately: With storage accounts and service bus namespaces, you sometimes need to work with services outside your subscription. To accommodate that scenario, those services allow you to attach an external account (from the context menu). You’ll notice that external accounts have a slightly different icon in server explorer to indicate they are from outside your subscription. Other Improvements We’ve also improved the Server Explorer by adding additional properties and actions to the service exposed. You now have access to most of the properties on a cloud service, deployment slot, role or role instance as well as the properties on storage accounts, virtual machines and web sites. Just select the object of interest in Server Explorer and view the properties in the property pane. We also now have full support for creating/deleting/update storage tables, blobs and queues from directly within Server Explorer.  Simply right-click on the appropriate storage account node and you can create them directly within Visual Studio: Virtual Machines: Start/Stop within Visual Studio Virtual Machines now have context menu actions that allow you start, shutdown, restart and delete a Virtual Machine directly within the Visual Studio Server Explorer. The shutdown action enables you to shut down the virtual machine and suspend billing when the VM is not is use, and easily restart it when you need it: This is especially useful in Dev/Test scenarios where you can start a VM – such as a SQL Server – during your development session and then shut it down / suspend billing when you are not developing (and no longer be billed for it). You can also now directly remote desktop into VMs using the “Connect using Remote Desktop” context menu command in VS Server Explorer.  Cloud Services: Emulator Express with Run as Normal User Support You can now launch Visual Studio and run your cloud services locally as a Normal User (without having to elevate to an administrator account) using a new Emulator Express option included as a preview feature with this SDK release.  Emulator Express is a version of the Windows Azure Compute Emulator that runs a restricted mode – one instance per role – and it doesn’t require administrative permissions and uses 40% less resources than the full Windows Azure Emulator. Emulator Express supports both web and worker roles. To run your application locally using the Emulator Express option, simply change the following settings in the Windows Azure project. On the shortcut menu for the Windows Azure project, choose Properties, and then choose the Web tab. Check the setting for IIS (Internet Information Services). Make sure that the option is set to IIS Express, not the full version of IIS. Emulator Express is not compatible with full IIS. On the Web tab, choose the option for Emulator Express. Service Bus: Notification Hubs With the Windows Azure SDK 2.1 release we are adding support for Windows Azure Notification Hubs as part of our official Windows Azure SDK, inside of Microsoft.ServiceBus.dll (previously the Notification Hub functionality was in a preview assembly). You are now able to create, update and delete Notification Hubs programmatically, manage your device registrations, and send push notifications to all your mobile clients across all platforms (Windows Store, Windows Phone 8, iOS, and Android). Learn more about Notification Hubs on MSDN here, or watch the Notification Hubs //BUILD/ presentation here. Service Bus: Paired Namespaces One of the new features included with today’s Windows Azure SDK 2.1 release is support for Service Bus “Paired Namespaces”.  Paired Namespaces enable you to better handle situations where a Service Bus service namespace becomes unavailable (for example: due to connectivity issues or an outage) and you are unable to send or receive messages to the namespace hosting the queue, topic, or subscription. Previously,to handle this scenario you had to manually setup separate namespaces that can act as a backup, then implement manual failover and retry logic which was sometimes tricky to get right. Service Bus now supports Paired Namespaces, which enables you to connect two namespaces together. When you activate the secondary namespace, messages are stored in the secondary queue for delivery to the primary queue at a later time. If the primary container (namespace) becomes unavailable for some reason, automatic failover enables the messages in the secondary queue. For detailed information about paired namespaces and high availability, see the new topic Asynchronous Messaging Patterns and High Availability. Service Bus: Tooling Improvements In this release, the Windows Azure Tools for Visual Studio contain several enhancements and changes to the management of Service Bus messaging entities using Visual Studio’s Server Explorer. The most noticeable change is that the Service Bus node is now integrated into the Windows Azure node, and supports integrated subscription management. Additionally, there has been a change to the code generated by the Windows Azure Worker Role with Service Bus Queue project template. This code now uses an event-driven “message pump” programming model using the QueueClient.OnMessage method. PowerShell: Tons of New Automation Commands Since my last blog post on the previous Windows Azure SDK 2.0 release, we’ve updated Windows Azure PowerShell (which is a separate download) five times. You can find the full change log here. We’ve added new cmdlets in the following areas: China instance and Windows Azure Pack support Environment Configuration VMs Cloud Services Web Sites Storage SQL Azure Service Bus China Instance and Windows Azure Pack We now support the following cmdlets for the China instance and Windows Azure Pack, respectively: China Instance: Web Sites, Service Bus, Storage, Cloud Service, VMs, Network Windows Azure Pack: Web Sites, Service Bus We will have full cmdlet support for these two Windows Azure environments in PowerShell in the near future. Virtual Machines: Stop/Start Virtual Machines Similar to the Start/Stop VM capability in VS Server Explorer, you can now stop your VM and suspend billing: If you want to keep the original behavior of keeping your stopped VM provisioned, you can pass in the -StayProvisioned switch parameter. Virtual Machines: VM endpoint ACLs We’ve added and updated a bunch of cmdlets for you to configure fine-grained network ACL on your VM endpoints. You can use the following cmdlets to create ACL config and apply them to a VM endpoint: New-AzureAclConfig Get-AzureAclConfig Set-AzureAclConfig Remove-AzureAclConfig Add-AzureEndpoint -ACL Set-AzureEndpoint –ACL The following example shows how to add an ACL rule to an existing endpoint of a VM. Other improvements for Virtual Machine management includes Added -NoWinRMEndpoint parameter to New-AzureQuickVM and Add-AzureProvisioningConfig to disable Windows Remote Management Added -DirectServerReturn parameter to Add-AzureEndpoint and Set-AzureEndpoint to enable/disable direct server return Added Set-AzureLoadBalancedEndpoint cmdlet to modify load balanced endpoints Cloud Services: Remote Desktop and Diagnostics Remote Desktop and Diagnostics are popular debugging options for Cloud Services. We’ve introduced cmdlets to help you configure these two Cloud Service extensions from Windows Azure PowerShell. Windows Azure Cloud Services Remote Desktop extension: New-AzureServiceRemoteDesktopExtensionConfig Get-AzureServiceRemoteDesktopExtension Set-AzureServiceRemoteDesktopExtension Remove-AzureServiceRemoteDesktopExtension Windows Azure Cloud Services Diagnostics extension New-AzureServiceDiagnosticsExtensionConfig Get-AzureServiceDiagnosticsExtension Set-AzureServiceDiagnosticsExtension Remove-AzureServiceDiagnosticsExtension The following example shows how to enable Remote Desktop for a Cloud Service. Web Sites: Diagnostics With our last SDK update, we introduced the Get-AzureWebsiteLog –Tail cmdlet to get the log streaming of your Web Sites. Recently, we’ve also added cmdlets to configure Web Site application diagnostics: Enable-AzureWebsiteApplicationDiagnostic Disable-AzureWebsiteApplicationDiagnostic The following 2 examples show how to enable application diagnostics to the file system and a Windows Azure Storage Table: SQL Database Previously, you had to know the SQL Database server admin username and password if you want to manage the database in that SQL Database server. Recently, we’ve made the experience much easier by not requiring the admin credential if the database server is in your subscription. So you can simply specify the -ServerName parameter to tell Windows Azure PowerShell which server you want to use for the following cmdlets. Get-AzureSqlDatabase New-AzureSqlDatabase Remove-AzureSqlDatabase Set-AzureSqlDatabase We’ve also added a -AllowAllAzureServices parameter to New-AzureSqlDatabaseServerFirewallRule so that you can easily add a firewall rule to whitelist all Windows Azure IP addresses. Besides the above experience improvements, we’ve also added cmdlets get the database server quota and set the database service objective. Check out the following cmdlets for details. Get-AzureSqlDatabaseServerQuota Get-AzureSqlDatabaseServiceObjective Set-AzureSqlDatabase –ServiceObjective Storage and Service Bus Other new cmdlets include Storage: CRUD cmdlets for Azure Tables and Queues Service Bus: Cmdlets for managing authorization rules on your Service Bus Namespace, Queue, Topic, Relay and NotificationHub Summary Today’s release includes a bunch of great features that enable you to build even better cloud solutions.  All the above features/enhancements are shipped and available to use immediately as part of the 2.1 release of the Windows Azure SDK for .NET. If you don’t already have a Windows Azure account, you can sign-up for a free trial and start using all of the above features today.  Then visit the Windows Azure Developer Center to learn more about how to build apps with it. Hope this helps, Scott P.S. In addition to blogging, I am also now using Twitter for quick updates and to share links. Follow me at: twitter.com/scottgu

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• Access Control Service: Transitioning between Active and Passive Scenarios

  - by Your DisplayName here!

  As I mentioned in my last post, ACS features a number of ways to transition between protocol and token types. One not so widely known transition is between passive sign ins (browser) and active service consumers. Let’s see how this works. We all know the usual WS-Federation handshake via passive redirect. But ACS also allows driving the sign in process yourself via specially crafted WS-Federation query strings. So you can use the following URL to sign in using LiveID via ACS. ACS will then redirect back to the registered reply URL in your application: GET /login.srf?   wa=wsignin1.0&   wtrealm=https%3a%2f%2faccesscontrol.windows.net%2f&   wreply=https%3a%2f%2fleastprivilege.accesscontrol.windows.net%3a443%2fv2%2fwsfederation&   wp=MBI_FED_SSL&   wctx=pr%3dwsfederation%26rm%3dhttps%253a%252f%252froadie%252facs2rp%252frest%252f The wsfederation bit in the wctx parameter indicates, that the response to the token request will be transmitted back to the relying party via a POST. So far so good – but how can an active client receive that token now? ACS knows an alternative way to send the token request response. Instead of doing the redirect back to the RP, it emits a page that in turn echoes the token response using JavaScript’s window.external.notify. The URL would look like this: GET /login.srf?   wa=wsignin1.0&   wtrealm=https%3a%2f%2faccesscontrol.windows.net%2f&   wreply=https%3a%2f%2fleastprivilege.accesscontrol.windows.net%3a443%2fv2%2fwsfederation&   wp=MBI_FED_SSL&   wctx=pr%3djavascriptnotify%26rm%3dhttps%253a%252f%252froadie%252facs2rp%252frest%252f ACS would then render a page that contains the following script block: <script type="text/javascript">     try{         window.external.Notify('token_response');     }     catch(err){         alert("Error ACS50021: windows.external.Notify is not registered.");     } </script> Whereas token_response is a JSON encoded string with the following format: {   "appliesTo":"...",   "context":null,   "created":123,   "expires":123,   "securityToken":"...",   "tokenType":"..." } OK – so how does this all come together now? As an active client (Silverlight, WPF, WP7, WinForms etc). application, you would host a browser control and use the above URL to trigger the right series of redirects. All the browser controls support one way or the other to register a callback whenever the window.external.notify function is called. This way you get the JSON string from ACS back into the hosting application – and voila you have the security token. When you selected the SWT token format in ACS – you can use that token e.g. for REST services. When you have selected SAML, you can use the token e.g. for SOAP services. In the next post I will show how to retrieve these URLs from ACS and a practical example using WPF.

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• Setup and configure a MVC4 project for Cloud Service(web role) and SQL Azure

  - by MagnusKarlsson

  I aim at keeping this blog post updated and add related posts to it. Since there are a lot of these out there I link to others that has done kind of the same before me, kind of a blog-DRY pattern that I'm aiming for. I also keep all mistakes and misconceptions for others to see. As an example; if I hit a stacktrace I will google it if I don't directly figure out the reason for it. I will then probably take the most plausible result and try it out. If it fails because I misinterpreted the error I will not delete it from the log but keep it for future reference and for others to see. That way people that finds this blog can see multiple solutions for indexed stacktraces and I can better remember how to do stuff. To avoid my errors I recommend you to read through it all before going from start to finish.The steps:Setup project in VS2012. (msdn blog)Setup Azure Services (half of mpspartners.com blog)Setup connections strings and configuration files (msdn blog + notes)Export certificates.Create Azure package from vs2012 and deploy to staging (same steps as for production).Connections string error Set up the visual studio project:http://blogs.msdn.com/b/avkashchauhan/archive/2011/11/08/developing-asp-net-mvc4-based-windows-azure-web-role.aspx Then login in to Azure to setup the services:Stop following this guide at the "publish website" part since we'll be uploading a package.http://www.mpspartners.com/2012/09/ConfiguringandDeployinganMVC4applicationasaCloudServicewithAzureSQLandStorage/ When set up (connection strings for debug and release and all), follow this guide to set up the configuration files:http://msdn.microsoft.com/en-us/library/windowsazure/hh369931.aspxTrying to package our application at this step will generate the following warning:3>MvcWebRole1(0,0): warning WAT170: The configuration setting 'Microsoft.WindowsAzure.Plugins.Diagnostics.ConnectionString' is set up to use the local storage emulator for role 'MvcWebRole1' in configuration file 'ServiceConfiguration.Cloud.cscfg'. To access Windows Azure storage services, you must provide a valid Windows Azure storage connection string. Right click the web role under roles in solution manager and choose properties. Choose "Service configuration: Cloud". At "specify storage account credentials" we will copy/paste our account name and key from the Azure management platform.3.1 4. Right click Remote desktop Configuration and select certificate and export to file. We need to allow it in Portal manager.4.15 Now right click the cloud project and select package.5.1 Showing dialogue box. 5.2 Package success Now copy the path to the packaged file and go to management portal again. Click your web role and choose staging (or production). Upload. 5.3Tick the box about the single instance if that's what you want or you don't know what it means. Otherwise the following will happen (see image 4.6)5.4 Dialogue box When you have clicked the symbol for accept- button you will see the following screen with some green indicators down at the right corner. Click them if you want to see status.5.5 Information screen.5.6 "Failed to deploy application. The upload application has at least one role with only one instance. We recommend that you deploy at least two instances per role to ensure high availability in case one of the instances becomes unavailable. "To fix, go to step 5.4If you forgot to (or just didn't know you were supposed to) export your certificates. The following error will occur. Side note, the following thread suggests. To prevent: "Enable Remote Desktop for all roles" when right-clicking BIAB and choosing "Package". But in my case it was the not so present certificates. I fund the solution here.http://social.msdn.microsoft.com/Forums/en-US/dotnetstocktradersampleapplication/thread/0e94c2b5-463f-4209-86b9-fc257e0678cd5.75.8 Success! 5.9 Nice URL n' all. (More on that at another blog post).6. If you try to login and getWhen this error occurs many web sites suggest this is because you need:http://nuget.org/packages/Microsoft.AspNet.Providers.LocalDBOr : http://nuget.org/packages/Microsoft.AspNet.ProvidersBut it can also be that you don't have the correct setup for converting connectionstrings between your web.config to your debug.web.config(or release.web.config, whichever your using).Run as suggested in the "ordinary project in your solution. Go to the management portal and click update.

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• Workarounds for supporting MVVM in the Silverlight ContextMenu service

  - by cibrax

  As I discussed in my last post, some of the Silverlight controls does not support MVVM quite well out of the box without specific customizations. The Context Menu is another control that requires customizations for enabling data binding on the menu options. There are a few things that you might want to expose as view model for a menu item, such as the Text, the associated icon or the command that needs to be executed. That view model should look like this, public class MenuItemModel { public string Name { get; set; } public ICommand Command { get; set; } public Image Icon { get; set; } public object CommandParameter { get; set; } } This is how you can modify the built-in control to support data binding on the model above, public class CustomContextMenu : ContextMenu { protected override DependencyObject GetContainerForItemOverride() { CustomMenuItem item = new CustomMenuItem(); Binding commandBinding = new Binding("Command"); item.SetBinding(CustomMenuItem.CommandProperty, commandBinding);   Binding commandParameter = new Binding("CommandParameter"); item.SetBinding(CustomMenuItem.CommandParameterProperty, commandParameter);   return item; } }   public class CustomMenuItem : MenuItem { protected override DependencyObject GetContainerForItemOverride() { CustomMenuItem item = new CustomMenuItem();   Binding commandBinding = new Binding("Command"); item.SetBinding(CustomMenuItem.CommandProperty, commandBinding);   return item; } } The change is very similar to the one I made in the TreeView for manually data binding some of the Menu item properties to the model. Once you applied that change in the control, you can define it in your XAML like this. <toolkit:ContextMenuService.ContextMenu> <e:CustomContextMenu ItemsSource="{Binding MenuItems}"> <e:CustomContextMenu.ItemTemplate> <DataTemplate> <StackPanel Orientation="Horizontal" > <ContentPresenter Margin="0 0 4 0" Content="{Binding Icon}" /> <TextBlock Margin="0" Text="{Binding Name, Mode=OneWay}" FontSize="12"/> </StackPanel> </DataTemplate> </e:CustomContextMenu.ItemTemplate> </e:CustomContextMenu> </toolkit:ContextMenuService.ContextMenu> The property MenuItems associated to the “ItemsSource” in the parent model just returns a list of supported options (menu items) in the context menu. this.menuItems = new MenuItemModel[] { new MenuItemModel { Name = "My Command", Command = new RelayCommand(OnCommandClick), Icon = ImageLoader.GetIcon("command.png") } }; The only problem I found so far with this approach is that the context menu service does not support a HierarchicalDataTemplate in case you want to have an hierarchy in the context menu (MenuItem –> Sub menu items), but I guess we can live without that.

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• Profiling Silverlight Applications after installing Visual Studio 2010 Service Pack 1

  - by mbcrump

  Introduction Now that the dust has settled and everyone has downloaded and installed Visual Studio 2010 Service Pack 1, its time to talk about a new feature included that will help Silverlight Developers profile their applications. Let’s take a look at what the official documentation says about it: Performance Wizard for Silverlight – taken from VS2010 SP1 KB. Visual Studio 2010 SP1 enables you to tune the Silverlight application performance by profiling the code. A traditional code profiler cannot tune the rendering performance for Silverlight applications. Many higher-level profilers are added to Visual Studio 2010 SP1 so that you can better determine which parts of the application consume time. So, how do you do it? After you finish installing VS2010 SP1, make sure it took by going to Help –> About. You should see SP1Rel under Visual Studio 2010 as shown below. Now, that we have verified you are on the most current release, let’s load up a Silverlight Application. I’m going to take my hobby Silverlight project that I created a month or so ago. The reason that I’m picking this project is that I didn’t focus so much on performance as it was just built for fun and to see what I could do with Silverlight. I believe this makes the perfect application to profile.  After the project is loaded, click on Analyze then Launch Performance Wizard. Go ahead and click on CPU Sampling (recommended). You will notice that it ask which application to target. By Default, it will select the .Web project in an Silverlight Application. Go ahead and leave the default Web Project checked. We are going to leave the client as Internet Explorer. Now, go ahead and click finish. Now your Silverlight Application will launch. While your application is running, you will see the following inside of Visual Studio 2010. Here is where you will need to attach your Silverlight Application to the web application that is current being profiled. Simply click on the  Attach/Detach button below and find your application to attach to the profiler. In my case, I am using IE8 and could find it by the title. After you close your browser, you will notice it generated a report: These files will end with a .VSP If you click on the .VSP you will it generated the following report: We could turn off “Just My Code” but it may pick up things that we didn’t want to profile as shown below: One other feature to note is that you may want to export the data to a CSV or XML. You can do that by looking at the toolbar and clicking the button highlighted below. Conclusion The profiler for Silverlight is a great addition to an already great product. So before you ship a Silverlight Application run it through the profile and see what comes up. Since its included and free I can’t see a reason not to do this. Thanks again for reading and I hope you subscribe to my blog or follow me on Twitter for more Silverlight/WP7 fun.  Subscribe to my feed

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• Access Control Service v2: Registering Web Identities in your Applications [concepts]

  - by Your DisplayName here!

  ACS v2 support two fundamental types of client identities– I like to call them “enterprise identities” (WS-*) and “web identities” (Google, LiveID, OpenId in general…). I also see two different “mind sets” when it comes to application design using the above identity types: Enterprise identities – often the fact that a client can present a token from a trusted identity provider means he is a legitimate user of the application. Trust relationships and authorization details have been negotiated out of band (often on paper). Web identities – the fact that a user can authenticate with Google et al does not necessarily mean he is a legitimate (or registered) user of an application. Typically additional steps are necessary (like filling out a form, email confirmation etc). Sometimes also a mixture of both approaches exist, for the sake of this post, I will focus on the web identity case. I got a number of questions how to implement the web identity scenario and after some conversations it turns out it is the old authentication vs. authorization problem that gets in the way. Many people use the IsAuthenticated property on IIdentity to make security decisions in their applications (or deny user=”?” in ASP.NET terms). That’s a very natural thing to do, because authentication was done inside the application and we knew exactly when the IsAuthenticated condition is true. Been there, done that. Guilty ;) The fundamental difference between these “old style” apps and federation is, that authentication is not done by the application anymore. It is done by a third party service, and in the case of web identity providers, in services that are not under our control (nor do we have a formal business relationship with these providers). Now the issue is, when you switch to ACS, and someone with a Google account authenticates, indeed IsAuthenticated is true – because that’s what he is! This does not mean, that he is also authorized to use the application. It just proves he was able to authenticate with Google. Now this obviously leads to confusion. How can we solve that? Easy answer: We have to deal with authentication and authorization separately. Job done ;) For many application types I see this general approach: Application uses ACS for authentication (maybe both enterprise and web identities, we focus on web identities but you could easily have a dual approach here) Application offers to authenticate (or sign in) via web identity accounts like LiveID, Google, Facebook etc. Application also maintains a database of its “own” users. Typically you want to store additional information about the user In such an application type it is important to have a unique identifier for your users (think the primary key of your user database). What would that be? Most web identity provider (and all the standard ACS v2 supported ones) emit a NameIdentifier claim. This is a stable ID for the client (scoped to the relying party – more on that later). Furthermore ACS emits a claims identifying the identity provider (like the original issuer concept in WIF). When you combine these two values together, you can be sure to have a unique identifier for the user, e.g.: Facebook-134952459903700\799880347 You can now check on incoming calls, if the user is already registered and if yes, swap the ACS claims with claims coming from your user database. One claims would maybe be a role like “Registered User” which can then be easily used to do authorization checks in the application. The WIF claims authentication manager is a perfect place to do the claims transformation. If the user is not registered, show a register form. Maybe you can use some claims from the identity provider to pre-fill form fields. (see here where I show how to use the Facebook API to fetch additional user properties). After successful registration (which may include other mechanisms like a confirmation email), flip the bit in your database to make the web identity a registered user. This is all very theoretical. In the next post I will show some code and provide a download link for the complete sample. More on NameIdentifier Identity providers “guarantee” that the name identifier for a given user in your application will always be the same. But different applications (in the case of ACS – different ACS namespaces) will see different name identifiers. This is by design to protect the privacy of users because identical name identifiers could be used to create “profiles” of some sort for that user. In technical terms they create the name identifier approximately like this: name identifier = Hash((Provider Internal User ID) + (Relying Party Address)) Why is this important to know? Well – when you change the name of your ACS namespace, the name identifiers will change as well and you will will lose your “connection” to your existing users. Oh an btw – never use any other claims (like email address or name) to form a unique ID – these can often be changed by users.

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