What are the key components of WCF architecture?

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Anubhav Kumar · Answer

The key components of 
WCF (Windows Communication Foundation) architecture are:
Service
The application that exposes functionality to clients.Implements one or more service contracts (interfaces).
Contract
Defines what the service does.Types:
Service Contract: Methods the service exposes.Data Contract: Defines the data types exchanged.Message Contract: Controls the SOAP message structure.Fault Contract: Defines errors communicated to clients.
Endpoint
The communication point for clients to interact with the service.Composed of three parts:
Address: Where the service is located (URL or URI).Binding: How to communicate (protocols, encoding, security).Contract: What functionality is available.
Binding
Specifies how to communicate with the service.Includes transport protocol (HTTP, TCP, etc.), encoding (text, binary), and security settings.
Channel
The layered stack that processes messages.Each channel handles a specific responsibility (e.g., transport, encoding, security).Channels form a channel stack.
Host
The process or application that runs and manages the lifetime of the service.Can be IIS, Windows Service, Console app, or self-hosted.
Client
The application or process consuming the WCF service through an endpoint.
Summary
Service implements functionality.Contract defines the interface and data.Endpoint = Address + Binding + Contract defines access.Binding controls communication details.Channels process messages.Host runs the service.Client consumes the service.

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What are the key components of WCF architecture?

Anubhav Kumar

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