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Questions tagged [wcf-callbacks]

71 questions
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Using a Callback to pass an Event to a WCF Client

I am trying to have my WCF client receive info from a callback. I have created a Client Library that any WCF Client can use to connect to my WCF Service. I am uncertain if I should implement the Callback in the Client Library or the WCF Client…
Ryan R
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How can I propogate an event in a windows service to the WCF service it is hosting so that the WCF service will raise a callback to the client?

Here is what I want to do: Have a windows service that hosts a WCF service. This service also will get notifications from SQL Server via SQLDependency. When the windows service gets notified by SQL Server that something has changed, I want it to…
richard
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how to check availablity of wcf service client for callback?

I've implemented pub/sub framework using ASP.NET, WCF Service with net.tcp binding. I hosted wcf service on IIS7.5. My code was developed under VS2010, Windows7. My demo application is working fine but I just want to handle the error exception when…
tong
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Can a WCF service object implementing a contract for a net.msmq endpoint also implement a callback contract for a net.tcp endpoint?

Trying to implement a MSMQ-backed WCF PubSub. I understand that net.msmq is one-way; however when I use a single service object to implement the net.msmq endpoint for reading from the underlying queue, and a net.tcp endpoint for listeners to…
andrewbadera
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WCF Service Callback Integration with Web Push API for Web Notifications

I need notifications (which comes from a WCF service callback) in my web application even when the browser is not opened. The notification source / event I will get from a WCF service callback from WCF service hosted in the network. I came across…
SiD
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WCF InstanceContext Error

publisher and subscriber concept using WCF, publisher(Server) to develop in WCF service and subscriber(Client) to develop in windows application. Publisher to create a proxy and to implement i got error "The InstanceContext provided to the…
sivakumar
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Unity unable to correctly resolve WCF InstanceContext implementation

I'm attempting to set up the client for a duplex WCF service via Unity 2.0. To do so, I want to insert an implementation of my CallbackContract - IUpdateClient - into an InstanceContext, which is then inserted into my service proxy, in this case a…
Dan J
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Is the callback from WCF to ASP.NET possible?

I have a Web service hosted in IIS in different box and WCF service hosted in Windows service, in a different box.(N-tier approach). Here, Web service is a client for WCF service. The request to upload the file comes to the IIS hosted Web service,…
MS_Windows
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CallBack Contract and Binding

I have my service on a web site. I try to run this example, first just the server part: :What steps do I need to take to use WCF Callbacks? But I get this message: "Contract requires Duplex, but Binding 'BasicHttpBinding' doesn't support it or isn't…
user3344394
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Check client status before calling callback method in WCF

I have a WCF Service and WCF Client working on Duplex Channel using netTCPBinding. I store connected users in a dictionary ( Dictionary ) When user Disconnect regularly, call Disconnect from service and I remove…
Mohamed Al-Hosary
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Accessing WCF Services Callbacks from Non Microsoft Clients

WCF is supposed to be interoperable, WCF services can be accessed from microsoft & non-microsoft clients, but only Microsoft clients can access WCF callback services. The question is: Is it possible for non-microsoft clients to access WCF callback…
Mohamed Al-Hosary
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Windows Phone 8 Callback WCF Service

I have a Windows Phone 8 Application and a WCF Service that implements Callback model. I'm having trouble configuring the service reference. I've tested the service using wsDualHttpBinding for a Windows Form Application Client instead the WP8 App,…
smn.tino
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WCF communicating between services on a server

I'm implementing an alert type system within my company LAN using WCF callbacks. It has a subscribe mechanism etc. I've used this tutorial as a starting point but I changed the binding to NetTcpBinding instead of wsDualHttpBinding and I'm self…
tetranz
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Large data transfer using wsDualHttpbinding fails

I'm trying to send data of size greater than 25 MB to multiple clients at the same time using callbacks. I have implemented the service with wsdualhttp binding. It throws "System.OutofMemory" and "Failed to allocate memory" exceptions when the…
Arun Vivek
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wcf callback method does not executed

1. MY service is on console application and my client is on windows application. 2. The service has a contract and my client has callback contract. The problem occurs when the client activate a method on the service and that method activate the…
Stav Alfi
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