
Chapter 2. Technologies 21
Traditional SOAP messages were exchanged over TCP/IP connections and encapsulated in
the Hyper Text Transfer Protocol (HTTP) protocol. This still holds true for most of its use, but
SOAP is now also used within the context of other transmission protocols such as messaging
(JMS, WebSphere MQ, and so on) and e-mail (SMTP, IMAP, POP3, and so on).
You can find the complete detailed specification of SOAP at the World Wide Web
Consortium’s Web site, which is at:
http://www.w3.org/
Example 2-1 and Example 2-2 show examples of a SOAP message sent to a service provider
(SOAP request) and the corresponding result sent back (SOAP ...