What is CrazyEngico.com (CE)?

CrazyEngico (CE) is a one-stop solution for interview questions and answers, domain knowledge, e-learning, tutorials, articles and many more learning material.
e-learning - Intelligent e-learning tutorials and articles
Domain Knowledge Learn about various business domains/verticals such as Banking, Financial, Insurance, Healthcare and many more...
Interview Questions and Answers - Post your questions and answers. 1000+ database of ready questions and answers available to prepare for an interview.
Tutorials - 300+ video tutorials from beginner to expert level.
Articles - 300+ technical articles to understand concepts.
Forum - A technical forum to post your queries/responses.

Search Questions

Interview Questions/Answers

Ads
Question
Interview Q & A >> WCF >> Can you explain duplex contracts in WCF?

<< Previous Question Navigator Next >>

1        0
Can you explain duplex contracts in WCF? (Views: 5927)


Answers


1        0

A duplex service contract is a message exchange pattern in which bothendpoints can send messages to the other independently. A duplexservice, therefore, can send messages back to the client endpoint,providing event-like behavior. Duplex communication occurs when aclient connects to a service and provides the service with a channel onwhich the service can send messages back to the client.

Submitted By: Anonymous | Created On: 8/7/2009 10:32:54 PM

8        1

duplex contract allows a service to callback to a client. When a contract is defined for a service, It is possible to specify a corresponding callbackcontract.The standard service contract defines the operations of the service that can be invoked by the client. The callback contract defines the operations of the client that can be invoked by the service. It is the client's responsibility to implement the callback contract and host the callback object. Each time the client invokes a service operation that is associated to the callback contract, the client supplies the necessary information for the service to locate and invoke the callback operation on the client.       

Submitted By: Geeta | Created On: 4/6/2010 11:33:47 PM

0        1

 what is the duplex

Submitted By: Anonymous | Created On: 9/20/2011 12:27:35 AM

0        0

duplex as far as i know is a mode of communication if u go by the core networking concept.

Submitted By: anurag sharan | Created On: 8/12/2012 2:50:10 AM

0        0

please refer ::
http://msdn.microsoft.com/en-us/library/ms731184.aspx

Submitted By: sanjay neelam jhansi | Created On: 12/29/2012 4:02:41 AM


Post your Answer
Your answer will be first reviewed by our administrator before it appears on the site.

Your Answer:


 
Display Name:





By clicking on Submit button you agree to the Terms of Service agreement.




Copyright © 2018 CrazyEngico.com. All rights reserved.
CrazyEngico.com is not responsible for the content and CrazyEngico.com does not evaluate or guarantee the accuracy of any CrazyEngico.com content.
Please read our terms of service agreement before using this site.

feedback