Introduction
Windows Communication Foundation (WCF) is a technology
combined with the features of XML Web Services and .NET Remoting, along with
some improvements. This article is a comparison of WCF with Web Services and
.NET Remoting.
Interoperability
- .NET Remoting works in a homogenous environment. A consuming application is also required to be in .NET.
- Web Services are platform and language independent, and don't care about the consuming application. But it has restrictions of the HTTP protocol. Performance-wise, they are considered slow.
- WCF can be hosted under the Windows environment, but it can be utilized by clients of different languages and different platforms.
Protocol
Utilization
- .NET Remoting applications can use the HTTP, TCP, and SMTP protocols.
- XML Web Services use SOAP, i.e., XML via HTTP.
- WCF, along with all these protocols, can use named pipes and MSMQ as well.
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Features
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Web service
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WCF
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Sample Code
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[WebService]
public class Service :
System.Web.Service.WebService
{
[WebMethod]
public string Test()
{
return "hey there";
}
}
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[ServiceContract]
public interface Itest
{
[OperationContract]
string ShowMessage();
}
public class Service : Itest
{
public string ShowMessage()
{
return "Hey there";
}
}
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Hosting
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It can be hosted in IIS
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It can be hosted in IIS, windows activation service,
Self-hosting, Windows service
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Programming
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[WebService] attribute has to be added to the class
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[ServiceContract] attribute has to be added to the class
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Model
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[WebMethod] attribute represents the method exposed to
client
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[OperationContract] attribute represents the method
exposed to client
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Operation
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One-way, Request- Response are the different operations
supported in web service
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One-Way, Request-Response, Duplex are different type of
operations supported in WCF
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XML
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System.Xml.serialization name space is used for
serialization
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System.Runtime.Serialization namespace is used for
serialization
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Encoding
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XML 1.0, MTOM(Message Transmission Optimization
Mechanism), DIME, Custom
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XML 1.0, MTOM, Binary, Custom
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Transports
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Can be accessed through HTTP, TCP, Custom
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Can be accessed through HTTP, TCP, Named pipes, MSMQ,P2P,
Custom
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Protocols
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Security
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Security, Reliable messaging, Transactions
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