Download Windows Communication Foundation

The mnemonic "ABC" can be used to remember address/binding/contract. Binding specifies what communication protocols are used to access the service, whether security mechanisms are to be used, and the like. WCF includes predefined bindings for most common communication protocols such as SOAP over HTTP, SOAP over TCP, and SOAP over Message Queues, etc. Interaction between WCF endpoint and client is done using a SOAP envelope. SOAP envelopes are in simple XML form, which makes WCF platform-independent. When a client wants to access the service via an endpoint, it not only needs to know the contract, but it also has to adhere to the binding specified by the endpoint. Thus, both client and server must have compatible endpoints.

WCF supports interoperability with WCF applications running on the same Windows machine or WCF running on a different Windows machines or standard Web services built on platforms such as Java running on Windows or other operating systems. In addition to SOAP, WCF 4 supports non-SOAP XML, RSS, JSON, and binary formats for external communication via HTTP or HTTPS.[6]

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A durable message is one that is never lost due to a disruption in the communication. The messages in a durable message pattern are always saved to a database. If a disruption occurs, the database allows you to resume the message exchange when the connection is restored. You can also create a durable message using the Windows Workflow Foundation (WF). For more information, see Workflow Services.

Microsoft BizTalk Server R2 also utilizes WCF as a communication technology. BizTalk is designed to receive and transform data from one standardized format to another. Messages must be delivered to its central message box where the message can be transformed using either a strict mapping or by using one of the BizTalk features such as its workflow engine. BizTalk can now use the WCF Line of Business (LOB) adapter to deliver messages to the message box.

The hosting features of Windows Server AppFabric application server are specifically designed for deploying and managing applications that use WCF for communication. The hosting features include rich tooling and configuration options specifically designed for WCF-enabled applications.

While there is no detailed description of the services running on your servers, what should be a replacement is dependent on the kind of services deployed on the servers. (Basic http request, Message queues, duplex bindings for 2 way communications etc.).WFC supports different communication format in terms of binding configurations (See different binding format here).

Use of Open API/Restful APIs should handle a larger portions of your existing WCF endpoints.However, gRPC is the new guy in town that supports Point-to-point real-time streaming services. Depending on the types of services hosted on your servers, WebSocket which features bi-directional, full-duplex communication over a persistent TCP connection could be combine with Web API if gRPC is new to your team. See more reference here.

Windows Communication Foundation (WCF) is a .NET framework for building service-oriented applications. Using WCF, developers can send messages between services and clients using various protocols, including the Simple Object Access Protocol (SOAP). It provides a robust system for inter-process communication and is used for building distributed and interoperable applications.Learn more

Your hands-on, step-by-step guide to building connected, service-oriented applications. Teach yourself the essentials of Windows Communication Foundation (WCF) 4 -- one step at a time. With this practical, learn-by-doing tutorial, you get the clear guidance and hands-on examples you need to begin creating Web services for robust Windows-based business applications. Discover how to: Build and host SOAP and REST services Maintain service contracts and data contracts Control configuration and communications programmatically Implement message encryption, authentication, and authorization Manage identity with Windows CardSpace Begin working with Windows Workflow Foundation to create scalable and durable business services Implement service discovery and message routing Optimize performance with service throttling, encoding, and streaming Integrate WCF services with ASP.NET clients and enterprise services components Your Step by Step digital content includes: Practice exercises Downloadable code samples Fully searchable online edition of the book -- with unlimited access on the Web

As mentioned before, NetNamedPipeBinding is a very popular binding among Windows services. This binding informs us that service communications will be facilitated across named pipes. A NetNamedPipe is a WCF abstraction of native named pipes. My curiosity led me to investigate how exactly the exact relationship between native named pipes and NetNamedPipes.

It is worth noting that this is one of the simplest examples of communicating to a WCF service. Certain service contracts may require the use of a DuplexChannelFactory for two way communication. ClientBase may also be used to communicate to WCF services.

We plan to further investigate the state of WCF endpoint security in an effort to better understand the scope of this attack surface. We are also working to understand more about the low-level implementation of WCF communications, so stay tuned.

The reason for publishing this article is that I think that a lot of people are going to use the new .NET 3.0 WCF. It is simple to use, and seems very powerful. I have spend a lot of time debugging this program, and I hope that this article will prevent other people from getting the same headache that I had because of a funny security exception that I would get all the time. Use the code directly or as an inspiration. I assume that the reader is familiar with client/server coding, and will therefore not get into details. It is said that WCF is very dynamic regarding the transfer methods, and can be configured to use almost any communication standard which makes it suitable for many client/server applications. It does not matter if you use HTTP, TCP etc., to transfer data, and the optional SSL / Encryption makes the WCF even more suited for large scale solutions.

Message Besides the body this is a communication unit that comprises of several parts. Message instances are sent as well as received for all types of communication between the client and the service.

Endpoint The address where a message is to be sent or received is defined by the endpoint. Along with defining the set of messages, it is also specified how the message will be sent with the help of the communication mechanism. A structure of an endpoint comprises of the following parts:

The Windows Communication Foundation (WCF) is a communication platform for the creation of distributed applications developed by Microsoft for the .NET Framework. Microsoft generally recommends two alternatives, gRPC and Web API, to replace WCF. 2351a5e196