Re: What's SOAP?

["Mark S. Waterbury" <mark.s.waterbury@xxxxxxx>]

Hi, Jack:

If you're an "old timer" then you probably remember "peer-to-peer"
networking,
SNA/SDLC, APPC, APPN, CPI-C and the like? Or, how about the old RPG II
ICF files, whereby you could "EVOKE" a program on another system? Or SNA
LU6.2?

SOAP is similar in concept, but instead of SNA, it is implemented as a
protocol
"embedded" in HTTP, so it can ride on top of an HTML data stream, where the
client can talk to a server, which is in this case an HTTP server with some
added
support for SOAP (usually via some "plug-ins").  And, since HTTP runs on top
of
TCP/IP, this is a technique that works across the internet, or inside your
intranet.

Hope That Helps...

Regards,

Mark S. Waterbury

----- Original Message -----
> From: "Jack Derham" <derhamj@xxxxxxxxxxxxx>
> To: "'Midrange Systems Technical Discussion'" <midrange-l@xxxxxxxxxxxx>
> Sent: Saturday, December 24, 2005 8:17 AM
> Subject: RE: What's SOAP?
>

> Thank you. As I said old function - new words. How is this different in
RPG
> then handling any other data transmission.
>
> Jack Derham
> Direct Systems, Inc.
>
> -----Original Message-----
> From: midrange-l-bounces@xxxxxxxxxxxx
> [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of David Gibbs
> Sent: Saturday, December 24, 2005 8:06 AM
> To: Midrange Systems Technical Discussion
> Subject: Re: What's SOAP?
>
> Jack Derham wrote:
> > Please help this "old Dog". Just what is SOAP in the XML context?
>
> Synopsis from http://en.wikipedia.org/wiki/SOAP :
>
> SOAP is a protocol for exchanging XML-based messages over a computer
> network, normally using HTTP. SOAP forms the foundation layer of the web
> services stack, providing a basic messaging framework that more abstract
> layers can build on. SOAP facilitates the Service-Oriented architectural
> pattern.
>
> There are several different types of messaging patterns in SOAP, but by
> far the most common is the Remote Procedure Call (RPC) pattern, where
> one network node (the client) sends a request message to another node
> (the server), and the server immediately sends a response message to the
> client.
>
> david
>
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