BT

Sun Metro and .NET WCF Interoperability

by Stefan Tilkov on Mar 26, 2008 |

The latest interoperability event (a “plugfest”) at Microsoft’s Redmond campus showed impressive results for interoperability between future releases of Sun’s Metro Web Services and Windows Communication Foundation in .NET 3.5. InfoQ had a chance to talk to Harold Carr, the engineering lead for enterprise web services interoperability at Sun, about the interop results.

When asked what the relevance of this for Java and .NET developers would be, highlighted the role of interoperability in general:

Web services are about wire interoperability, not about the platform they are implemented in. Therefore, developers, whether using .NET or Java, expect their services to interoperate. It is relatively straightforward for platform developers to ensure interoperability for WS-I basic profiles. But when you add in WS-Policy, WS-Security, WS-Trust, WS-SecureConversation, WS-ReliableMessaging, etc., the bar for platform implementors gets way higher. The interop results give transparency into our current development stage to give people that are planning to use Metro with .NET 3.5 (reminder: Metro 1.0 already works with .NET 3.0) confidence that we will provide an interoperable platform (rather than a platform that has only been tested against itself).

With regards to the maturity of standards in the WS-* space, he noted:

There are two aspects to consider: the interop scenarios we test and the deployment of services based on these specs. The interop scenarios are very useful, but certainly not complete (particularly in reliable messaging). Real deployments will come up with combinations never tested (either by the interop scenarios tested at the plugfest or our more extensive in-house testing). Also, .NET 3.0 and Metro 1.0 (both released products) are based on the submission versions of the WS-* specifications (except for WS-Security, which is standard). .NET 3.5 (which is released) is based on the standard versions. Metro 1.x (which will ship later in 2008) will be based on the standard versions also. All this is a long-winded way to say the standard specs haven’t been used in many deployments based on shipping platforms from different vendors.

According to Harold, the hardest aspect to get working was security, especially using Kerberos, and including Trust:

There are so many ways to do security it takes a lot of testing. And when you have trust in the picture then you have a 3-way test: client, STS, service – so you have more combinations to test.

Check out the interop results in Harold’s blog post and take a closer look at Metro on Sun’s site.

Hello stranger!

You need to Register an InfoQ account or or login to post comments. But there's so much more behind being registered.

Get the most out of the InfoQ experience.

Tell us what you think

Allowed html: a,b,br,blockquote,i,li,pre,u,ul,p

Email me replies to any of my messages in this thread

WCF & Java Interop tutorial series by Kevin Gao

I am writing a WCF & Java Interop tutorial series. The series covers different data types between Java & WCF, session management, WCF ASP.NET compatibility, SSL, Asynchronous Polling, data compression , MTOM and so on.

These articles are based on my real world development experience of SCM Anywhere (www.scmsoftwareconfigurationmanagement.com), a SCM tool with integrated version control, bug tracking and build automation.

The series has not been finished, but I am adding articles several times per week. Please check back for the latest articles.

The URL of the series is:
www.kevingao.net/wcf-java-interop

Thanks a lot.

-----------------------------------------------------------------
Kevin Gao, MCSD MCDBA
www.kevingao.net
www.dynamsoft.com

Allowed html: a,b,br,blockquote,i,li,pre,u,ul,p

Email me replies to any of my messages in this thread

Allowed html: a,b,br,blockquote,i,li,pre,u,ul,p

Email me replies to any of my messages in this thread

1 Discuss

Educational Content

General Feedback
Bugs
Advertising
Editorial
InfoQ.com and all content copyright © 2006-2014 C4Media Inc. InfoQ.com hosted at Contegix, the best ISP we've ever worked with.
Privacy policy
BT