Darryl Burling Developer Evangelist Microsoft The age of connected applications Whats new in VS2008...

Darryl BurlingDeveloper EvangelistMicrosoft

The age of connected applicationsWhats new in VS2008WCF

Background: WS*, .Net 3.0 and WCFABC’s & improvmentsBindings Contracts & Content

What about IIS7?HTTP Programming

Application integration (office, etc)

Application integration (office, etc)Client Application services

Client Application servicesApplication integration (office, etc)Windows Communication Foundation

Tooling supportNew BindingsWCF for DevicesHTTP Programming modelsWCF Profiling

WCF is an SDK for building SOA on Windows

Service execution runtime

Released with Windows VistaPart of Microsoft .NET Framework 3.0

Requires .NET Framework 2.0

Available also onMicrosoft Windows XP SP2Windows Server 2003Windows Server 2008

Every service is associated with a unique addressAddress is the location of the service Address provides:

Transport protocol to use HTTPTCPP2PIPCMSMQ

Name of target machine, site or network Communication port, pipe or queue Specific path or URI

A simple way of wrapping multiple aspects of communication

Protocols Format and encoding Security ReliabilityTransaction propagationInteroperability

Extract all of that out of your codeUse a pre-defined template

Can customize

Can write custom bindings from scratch

BasicHTTPBindingBasicHTTPContextBindingMSMQIntegrationBindingNetMsmqBindingnetNamedPipeBindingnetPeerTCPBindingnetTCPBinding

netTCPContextBindingwebHTTPBindingws2007HttpBindingwsDualHttpBindingwsFederationHttpBindingwsHttpBindingwsHttpContextBinding

Or build your own!

OperationContract attributeMethods only

No properties/indexers/events

Independent of visibilityOpt-in model

Other methods not included

[ServiceContract]

interface IMyContract

{

[OperationContract]

string MyMethod(string text);

}

class MyService : IMyContract

{

public string MyMethod(string text)

{

return "Hello " + text;

}

}

Separate host process can be provided by:

Microsoft Internet Information Services (IIS) 5.0/6.0Windows Activation Service (WAS) (IIS 7)Your application

Called self-hosted

In-proc must be self-hosted

IIS 5/6HTTP/HTTPS onlySelf Host other bindings

IIS 7 Windows Activation Services (WAS)Host any binding

Self HostedProcess W3SVC

.NET Worker

Service Host

HTTP

NET.T

CP

NET.P

IPE

NET.M

SM

Q

WAS

NET.T

CP

Kiwibank JavaPerlJscriptVBScriptVisual Basic 6.0 codeand Universe Pick Basic

http://tinyurl.com/335flo

Good tooling support in VS2008Templates for WCF ServicesWCF Configuration EditorIntegrated Unit Testing

Invoke services without building a client

WCF ProfilingExamine performance of services at debug

Consistent programming model for Windows Mobile device and desktopShrunk footprint from over 10MB to less than 1MBInteroperates with desktopSupported features

Subset of messaging layerSubset of WS-Security and WS-Addressability HTTP MessagingStore and Forward MessagingExtensible Transports

Not SupportedService Model and Contracts

Compact SVCUtil

Everything (mostly) is URI addressableHTTP Verbs

GET - Most PrevalentPOST – Overloaded, Used for actionsPUT, DELETE – Largely Ignored

Representation Format – (X)HTMLHTTP Response Codes Stateless

New “web-friendly” WCF Binding in Fx 3.5Allows for the development of RESTful servicesWorks across REST ContinuumHTTP and HTTPS Transports OnlyDoes not use SOAP envelopesWebMessageEncoding

JSONXML

Indicate the HTTP Method for the operation

WebGet – Don’t make me write itWebInvoke – All verbs other than GET (Method parameter takes in the name of the Verb)

Other ParametersBodyStyle – Indicates whether the Request / Response are wrapped or notRequestFormat – Json or XmlResponseFormat – Json or XmlUriTemplate – Covered in a minute…

Connected Systems:Distributed DataFunctionality surfacingConnectivity

Much improved tooling in VS2008Easy to use WCF and build connected apps

New HTTP programming support in .Net 3.5

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