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Microsoft WCF Services Microsoft WCF Services

Microsoft WCF Services - PowerPoint Presentation

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Microsoft WCF Services - PPT Presentation

Adam Dille CS526 Spring 2010 Project Scope Advances in Microsofts service offerings ASMX vs WCF Latest WCF Improvements NET 40 No indepth study of backwards compatibility No ID: 544906

service wcf services public wcf service public services net web helloservice asmx hosting string configuration security servicehost endpoint ihelloservice

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Slide1

Microsoft WCF Services

Adam

Dille

CS526 – Spring 2010Slide2

Project Scope

Advances in Microsoft’s service offerings

ASMX vs. WCF

Latest WCF Improvements (.NET 4.0)

No

in-depth study of backwards

compatibility

No

comparisons to Java, Ruby, PHP, etcSlide3

MS Web Service History

ASMX

Introduced with .NET 1.0 in 2002

Service creation is quick and painless

Limited in scope

WCF

Introduced with .NET 3.0 in 2006

More steps involved to create and configure

Much more broad in scope and abilitiesSlide4

ASMX

Add ASMX file to Web Application

Decorate a function with [

WebMethod

] attribute

Viola! We have a web service!

[

WebMethod

]

public

String

SayHello

(

String

name)

{

return

“Hello “

+ name;

}Slide5

ASMX

Limited to HTTP protocol

Requires IIS, Cassini or hand-coded web server instance

Relies on web server for securitySlide6

WCF

Unifies development of web services, peer to peer, client/server and IPC

Endpoints expose different protocols

Combines and interoperates with:

ASP.NET Web Services (ASMX)

.NET

Remoting

Message Queuing

Enterprise Services (COM+)Slide7

WCF Security

Variety of Security Options

Windows

Certificate

Digest

Basic

UserName

NTLM

IssuedToken

Allows varied security for same service through EndpointsSlide8

WCF Service Design

Attributes

ServiceContract

– Marks a class or interface as a WCF service

OperationContract

– Marks a function as a member of the parent service contract

DataContract

– Marks a class or

struct

as a data type that will be passed to or from the service

DataMember

– A property of a data contract that will be passed along with it’s parent object

MessageContract

– Allows explicit formatting of messages. Useful for interoperability.Slide9

WCF Service Design

[

DataContract

]

public

class

HelloInfo

{

[

DataMember

]

public

String

Name { get; set; }

}Slide10

WCF Service Design

[

ServiceContract

]

public

interface

IHelloService

{

[

OperationContract

]

public

String

SayHello

(

HelloInfo

info);

}

public

class

HelloService

:

IHelloService

{

public

String

SayHello

(

HelloInfo

info)

{

return

“Hello “

+

info.Name

;

}

}Slide11

WCF Hosting

Hosting Options

IIS 5 & 6 (HTTP protocol only)

IIS 7

.NET Forms or Console application

Windows ServiceSlide12

WCF Hosting

Defining Endpoint through Configuration

<?xml version="1.0" encoding="utf-8" ?>

<configuration>

<

system.serviceModel

>

<services>

<service name=“

HelloService

">

<endpoint address=“

HelloService

" binding="

basicHttpBinding

" contract="

IHelloService

"/>

</service>

</services>

</

system.serviceModel

>

</configuration>Slide13

WCF Hosting

Defining Endpoint through Configuration

public void

DefineEndpointInConfig

()

{

ServiceHost

sh

= new

ServiceHost

(

typeof

(

HelloService

));

sh.Open

();

}Slide14

WCF Hosting

Defining Endpoint Imperatively

public

void

DefineEndpointImperatively

()

{

ServiceHost

sh

= new

ServiceHost

(

typeof

(

HelloService

));

sh.AddServiceEndpoint

(

typeof

(

IHelloService

),

new

WSHttpBinding

(),

"http://localhost/HelloService/EP1"

);

sh.Open

();

}Slide15

WCF in .NET 4.0

Released April 12, 2010

Simplified Configurations (

Config

-free!)

Service discovery

Routing services

REST Improvements

Workflow Services IntegrationSlide16

Questions

?