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Distinguishing Messages

Can I have two operations with the same name but different calling conventions use the same action? No, the point of the action property on a message is to guarantee that the message contains sufficient information to distinguish which operation it should

MTOM Boundary Markers

What is the string "--uuid:…" doing embedded in MTOM messages? That string is a boundary marker that separates one part of the message from another. This scheme of separating message parts using a unique string is common to many types of multipart messages

SOA Samples at Apache

The Stonehenge incubation project at Apache has started collecting together different implementations of SOA applications to demonstrate interoperability between different vendors. The first application is based on the StockTrader sample application that
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Updates to Reliable, Secure, and Transacted Standards Close to Approval

Updated versions of the standards for reliable message, message security, and distributed transactions have completed public review and are headed to a final vote. I expect all of these standards updates to be approved and see official publication of

Sam Ruby to Chair HTML WG

I saw an announcement the other day that Sam Ruby will become co-chair of the W3C HTML working group at the beginning of next year. The HTML working group impacts web application development more than most other standards even though there's rarely a
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Silverlight-Java Interoperability

Robert Bell wrote an article a few weeks ago discussing how to achieve interoperability between a Silverlight application and a Java application . In the article Robert covers interoperability when building SOAP services, REST services, and RSS services.

Standards Guide

Looking for a guide to all of the web services protocols implemented by WCF? There's no single document that captures all of the information, but there is a group of documents that talk about the implemented protocols and some of the choices in those
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XQuery 1.1 Draft

A working draft for a 1.1 revision to XQuery went up earlier this week. The changes from XQuery 1.0 (which was finished just last year) to XQuery 1.1 appear to be small. There are two additional operators for grouping and windowing over a data stream.
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Another Last Call for XML Schema 1.1

New working drafts have been published for XSD 1.1, which starts a last call period for comments lasting from now until September 12th. The previous last calls in 2006 and 2007 resulted in a substantial number of comments and revisions. You can get the
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Messaging Additions in Orcas, Part 3

Now that I've covered several of the new feature additions in Orcas I also want to include mention of some of the fixes done to improve interoperability with other platforms. Allowing an empty SOAPAction. Previously we required that the HTTP SOAPAction
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Messaging Additions in Orcas, Part 2

Continuing on with the theme of messaging additions in Orcas, today I'll look at some more of the protocols and community-driven features that were added. WS Atomic Transaction 1.1 . Transactions tie together multiple participants in a distributed application.

Messaging Additions in Orcas

I've had scattered posts in the past talking about the messaging features and enhancements in Orcas. Over the next few days I'm going to be doing a bit of consolidating to organize that information into a few listings of the top changes using reasonably

Mystery of the Disappearing Addressing Headers

Why do the messages logged by my service show addressing headers but those headers disappear when the message is sent? This is easy to explain once you actually look at the messages. Here's a quick test program that generates some SOAP 1.1 messages with
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Augmenting Security Requests

How can I add some additional information to the request when contacting a token server? Looking at the schema for a RequestSecurityToken message, there clearly is some extensibility space intended for providing additional information in the request.

10 Years of XML and More Still Coming

Over the weekend XML 1.0 turned 10 years old from the day it was first accepted as a W3C recommendation. It started as a subset of SGML that allowed generic document content to be served and processed over HTTP. It's now used for everything, including
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