Unit 5

Chapter 12 Interoperability and Integration

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WS-* Interoperability Integration with legacy systems. Contents are from:

- Textbook- Pro WCF Practical Microsoft SOA Implementation by Dennis Mulder

Interoperability

Ability to communicate with other platforms thru standard protocol like SOAP.

SOAP is platform independent. To achieve interoperability WCF team

generatedmany compatibility tests for a subset of different vender specifications.

Microsoft created WCF interoperability Plug-Fest #

Sun is one of the participants.# www.mssoapinterop.org/ilab

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Interoperability

Sun web services team worked with Microsoft WCF team.

They released open source framework – Project Tango1 which focuses on interoperability with WCE.

It has evolved into Web Services Interoperability Technology(WSIT)2

Another major participant in the WCF/.NET interoperability is Axis Project from Apache Software Foundation 3

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Interoperability

1. http://weblogs.java.net/blogharoldcarr/archive/2006/02/an_overview_of_1.html

2. http://java.sun.com/webservices/interop/index.jsp

3. http://ws.apache.org/axis2

One of the earliest efforts is to implement WS-I Basic Profile.

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Interoperability

WS-I Basic Profile Some venders had chosen different versions

of WSDL or SOAP. So getting interoperability among diff. system

is very difficult. The early SOA vendors did not confirm to

open standards, so true interoperability between different vendors is very difficult.

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Interoperability

WS-I Basic Profile Major participants form Web Services

Interoperability (WS-I) organization to develop web services standard in non- proprietary and open manner.

Currently appox. 90 organizations are participating.

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Interoperability

WS-I Basic Profile Core components

- In April 2004 WS-I released version 1.0.- This set of specifications laid the groundwork for vendors and customers to form strong base.

- Many companies and open sources groups recognized that market will no longer allow stand alone proprietary interoperability stack.

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Interoperability

WS-I Basic Profile Core components

- S0AP 1.1 - WSDL 1.1 - UDDI 2.0- XML 1.0 - XML Schema Part1: Structures- XML Schema Part 2: Datatypes- SSL Version 3.0etc….

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Interoperability

WS-I Basic Profile ASP.NET Support for basic profile

- Initially it did not support basic profile 1.0.- With ASP.NET 2.0 support for basic profile 1.1 was available

*http://www.servicetechspecs.com/ws*

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Interoperability

Web Service protocol support by WCF BasicHttpBinding

- Supports WS-Basic Profile 1.1- Allows to create endpoint which can communicate with *.asmx based web services.

WSHttpBinding- Basic + secure+reliable sessions.

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Interoperability

Web Service protocol support by WCF WSDualHttpBinding

- Copy of WSHttpBinding but it supports duplex

WCF Services are compatible with Web Service Enhancement(WSE 3.0)

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Integration

Process of linking together different computing systems and software applications physically or functionally, to act as a unit.

WCF supports COM+ Integration, MSMQ

Difference between Interoperability and Integration

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Chapter 13 Deploying WCF

Installing WCF Services Upgrading existing services Troubleshooting WCF service installations.

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Installing WCF Services Operating System support

- Windows XP SP2- Windows Server 2003 with SP1- Windows Vista (WCF is installed)- Window 7

Required Software- .NET Framework 3.0, 3.5 and …- IIS(Internet Information Services)- MSMQ(MicroSoft Message Queuing)

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Installing WCF Services .NET Framework

- http://www.microsoft.com/en-in/download/details.aspx?id=22

- Needed on machine in which you want to run WCF Service

*http://en.wikipedia.org/wiki/.NET_Framework*

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Installing WCF Services IIS

- Needed on machine in which you want to Host WCF Service

- To install it open control panel add remove programs Add/Remove Windows Components

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Installing WCF Services

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Installing WCF Services MSMQ

- To install it open control panel add remove programs Add/Remove Windows Components

And view previous screen

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Installing WCF Services Hosting on IIS

- Create virtual directory in c:\inetpub\wwwroot directory- Copy of publish .svc and config files (see demo)

Hosting as Windows Service- Create .exe of your host application.- Install it by using installutil.exe- Start service by net start command- Stop service by net stop command

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Upgrading Services Upgrading in IIS is very easy copy or republish

the assembly, config, svc files and you are done.

In Window Service you need to restart service manually after doing changes in your code. So that the changes are available.

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Trouble Shooting WCF installations Client/Server Communications

- It client cannot communicate with service then problem might not be with client only.- Start looking at service first, by using svcutil.exe- On IIS try the address of service in browser.- If both options are ok then problem is on client side.- Review client config file.

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Trouble Shooting WCF installations Unexpected Service behavior

- Reason is unhandled exception.- It can be monitoring by setting IncludeExceptionDetailInFaults=true either in code or config.- After testing you can turn it off.- You can also see Trace viewer, Message logging

More on trouble shootinghttp://msdn.microsoft.com/en-us/aa702636.aspx

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References

Cross Platformhttp://en.wikipedia.org/wiki/Cross_platform

WS-* Specshttp://www.servicetechspecs.com/ws WS-* Specs =

WS-Addressing, WS- Discovery, WS-Federation, WS-Policy, WS-Security, and WS-Trust

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References Miscellaneoushttp://msdn.microsoft.com/en-

us/library/aa480021.aspxhttp://www.oracle.com/us/products/middleware/soa/

overview/index.htmlhttp://www.whatissoa.com/http://www.dotnetobject.com/Thread-WCF-

Interview-Questions-and-Answerhttp://www.questpond.com/dotnet/WCF-Interview-Questions-and-Answers.html

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