1. Thayer School of Engineering Dartmouth Class Schedule April 7 (today) April 8 x-period – Max, Diego April 9 no class April 11 - Riley, Ian April 14 – Song, Josh April 15 – Greg, Saurabh April 16 – Jose, James April 18 - Ali April 21 - Guofei Jiang: RDF, DAML April 23 - Wayne Chung: JXTA April 25 April 28 April 30 – Valentino Crespi: examples May 2 – Bob Gray: example May 5 May 6 May 7 May 9 May 12 May 14 May 16 May 19 – Projects May 20 – Projects May 21 – Projects May 23 – Projects May 26 – Projects May 28 – no class

2. Thayer School of Engineering Dartmouth Lecture 5 Overview SOAP overview Homework discussion VS status

3. Thayer School of Engineering Dartmouth The Web Services Problem Can be any platform Can be any programming language Can be behind a firewall/proxy What’s the current temperature? The current temperate is 32 degrees VB/Windows C++/Solaris SOAP Firewall Port 80

4. Thayer School of Engineering Dartmouth SOAP Goals Implements an RPC Allows User Defined Data Types Utilize Existing Simple Standards (HTTP, XML) Cross Platform (unlike DCOM) Cross Language (unlike Java RMI) Localization (English, Chinese, etc.) Protocol Agnostic (HTTP, SMTP)

5. Thayer School of Engineering Dartmouth Implementation Overview

6. Thayer School of Engineering Dartmouth Message Request Example ( note the XML Schema) POST /glue HTTP/1.1 Host: localhost Content-Type: text/xml; charset="utf-8" Content-Length: nnnn SOAPAction: ”Echo” Hello

7. Thayer School of Engineering Dartmouth Message Response Example HTTP/1.1 200 OK Content-Type: text/xml; charset="utf-8" Content-Length: nnnn Hello

8. Thayer School of Engineering Dartmouth SOAP References SOAP in.NET –http://www.microsoft.com/mind/0100/soap /soap.asp –http://www.microsoft.com/mobile/develope r/technicalarticles/pocketsoap.asp –http://msdn.microsoft.com/soap/

9. Thayer School of Engineering Dartmouth XML Schema See http://www.w3c.org/TR/xmlschema-0 Primer http://www.w3c.org/TR/xmlschema-1 Structures http://www.w3c.org/TR/xmlschema-2 Datatypes for authoritative information. Also Deitel, Visual Basic.NET series (Amazon.com)