8/17/2019 SOAP.ppt

1/29

1

Simple Object Access Protocol

(SOAP)

by Kazi Huque

8/17/2019 SOAP.ppt

2/29

2

Presentation Outline

 Definition

 Motivation

Characteristics

SOAP message format 

SOAP in code SOAP Security

SOAP in action

8/17/2019 SOAP.ppt

3/29

3

What is SOAP?

SOAP is a lighteight !rotocol intended fore"changing structured information in a

decentralized# distributed environment$ SOAPuses %M& technologies to define an e"tensiblemessaging frameor'# hich !rovides a messageconstruct that can be e"changed over a variety ofunderlying !rotocols$ (he frameor' has beendesigned to be inde!endent of any !articular

 !rogramming model and other im!lementation) s!ecific semantics$

8/17/2019 SOAP.ppt

4/29

4

SOAP is the Foundation

SOAP

WS-Security

WS-Policy WS-Trust   WS-Privacy

WS-SecureConversation   WS-Federation WS-Authorization

8/17/2019 SOAP.ppt

5/29

5

Simply Put...

SOAP is a ay for a !rogram running in

one o!erating system to communicate ith

a !rogram running in either the same or adifferent o!erating system# using H((P *or

any other trans!ort !rotocol+ and %M&$

8/17/2019 SOAP.ppt

6/29

6

SOAP Messaging Frameor! 

 %M&)based messaging frameor' that is ,+ e"tensible

-+ intero!erable

.+ inde!endent

 /e"t e discuss these three characteristics

in more detail 

8/17/2019 SOAP.ppt

7/29

7

"#tensible

Sim!licity remains one of SOAP0s !rimary

design goals

SOAP defines a communication

 frameor' that allos for features such as

 security# routing# and reliability to be

added later as layered e"tensions

8/17/2019 SOAP.ppt

8/29

8

$nteroperable

SOAP can be used over any trans!ort

 !rotocol such as (CP# H((P# SM(P 

SOAP !rovides an e"!licit binding today

 for H((P

8/17/2019 SOAP.ppt

9/29

9

$nteroperable %ont&

8/17/2019 SOAP.ppt

10/29

10

$ndependent

SOAP allos for any !rogramming model

and is not tied to 1PC

SOAP defines a model for !rocessing

individual# one)ay messages

SOAP also allos for any number of

message e"change !atterns *M2Ps+

8/17/2019 SOAP.ppt

11/29

11

One'Way Message

8/17/2019 SOAP.ppt

12/29

12

euest*esponse

8/17/2019 SOAP.ppt

13/29

13

SOAP Message Format

SOAP message consists of three !arts3 SOAP 2nvelo!e

SOAP Header *o!tional+

SOAP 4ody

 5rom the http://schemas.xmlsoap.org/soap/envelope/  

names!ace

8/17/2019 SOAP.ppt

14/29

14

SOAP "n+elope

(he SOAP 2nvelo!e construct defines an

overall frameor' for e"!ressing what  is

in a message and who should deal ith it$

8/17/2019 SOAP.ppt

15/29

15

SOAP "n+elope %ont&

(he 2nvelo!e is the to! element of the

 %M& document re!resenting the message$

(he Envelope element is alays the rootelement of a SOAP message$

(he 2nvelo!e element contains an o!tional

 Header  element folloed by a mandatory Body element$

8/17/2019 SOAP.ppt

16/29

16

SOAP "n+elope %ode

6soa!32nvelo!e

 "mlns3soa!78htt!399schemas$"mlsoa!$org9soa!9envelo!e98:

6soa!3Header: 6;)) o!tional )):

 

69soa!3Header:

6soa!34ody:

 69soa!34ody:

69soa!32nvelo!e:

8/17/2019 SOAP.ppt

17/29

17

SOAP ,eader 

(he Header element is a generic container

 for control information

 

8/17/2019 SOAP.ppt

18/29

18

SOAP ,eader %ode

6soa!3Header:

6;)) security credentials )):

6s3credentials "mlns3s78urn3e"am!les)org3security8:6username:dave69username:

6!assord:evad69!assord:

69s3credentials:

69soa!3Header: 

8/17/2019 SOAP.ppt

19/29

19

SOAP -ody

(he 4ody element re!resents the message

 !ayload 

8/17/2019 SOAP.ppt

20/29

20

SOAP -ody %ode

6soa!34ody:

6"3(ransfer5unds "mlns3"78urn3e"am!les)org3ban'ing8:

6from:--).=-=.>69from:

6to:>?)-?.?=.69to:

6amount:,@@$@@69amount:

69"3(ransfer5unds:

69soa!34ody: 

8/17/2019 SOAP.ppt

21/29

21

SOAP in %ode

SOAP Message 2mbedded in H((P 1equest3

6SOAP)2/32nvelo!e

 "mlns3SOAP)2/78htt!399schemas$"mlsoa!$org9soa!9envelo!e98   SOAP2/3encodingStyle78htt!399schemas$"mlsoa!$org9soa!9encoding98:

  6SOAP)2/34ody:

  6m3Bet&ast(radePrice "mlns3m78Some)1

8/17/2019 SOAP.ppt

22/29

22

SOAP in %ode %ont&

SOAP Message 2mbedded in H((P 1es!onse3

6SOAP)2/32nvelo!e "mlns3SOAP)2/78htt!399schemas$"mlsoa!$org9soa!9envelo!e98   SOAP)2/3encodingStyle78htt!399schemas$"mlsoa!$org9soa!9encoding989:  6SOAP)2/34ody:  6m3Bet&ast(radePrice1es!onse "mlns3m78Some)1

8/17/2019 SOAP.ppt

23/29

23

SOAP Security

(he SOAP s!ecification does not define

encry!tion for %M& Eeb Services$

(his is left u! to the im!lementer of the

SOAP !rotocol$

8/17/2019 SOAP.ppt

24/29

24

$ssues About Security

 2ncry!tion !laces a de!endency on the

trans!ort !rotocol

 Does the trans!ort !rotocol su!!ort secure

communicationF

Ehat is the cost of encry!ting all the data

versus !art of the dataF

8/17/2019 SOAP.ppt

25/29

25

SOAP %ode ith "ncryption

6G EebService &anguage78CI8 Class78CreditCardService8 G:

using System$Eeb$ServicesJ

 !ublic class CreditCardService

LEebMethod

  L2ncry!tion2"tension*2ncry!t72ncry!tMode$1es!onse+

 !ublic string BetCreditCard/umber*+ return 8MC3 =,,,),,,,),,,,),,,,8J

 N

 N

8/17/2019 SOAP.ppt

26/29

8/17/2019 SOAP.ppt

27/29

27

esponse "ncrypted

6soa!34ody:

6BetCreditCard/umber "mlns78htt!399tem!uri$org98:

6BetCreditCard/umber1esult:?. ,, -=. .- . > ? ,. ,>@ ,.=

,?? -=, ,>? -@> - ,,= ,-- .? ,?@ .= ,>= ,.? , > --, ,> -.> ? -

,- >= -

69BetCreditCard/umber1esult:

69BetCreditCard/umber:

69soa!34ody: 

8/17/2019 SOAP.ppt

28/29

28

SOAP in Action

 Demo

8/17/2019 SOAP.ppt

29/29

29

eerences

nderstanding SOAPOverall e"!lanation of hat SOAP is# and hat it can do$

htt!399msdn$microsoft$com9ebservices9understanding9ebservicebasics9default$as!"F!ull 

79library9en)us99dnsoa!9html9understandsoa!$as!

E.C /ote 2"!lains ho SOAP e"changes messages$ Code level

details$

htt!399$.$org9(19-@@@9/O(2)SOAP)-@@@@@?9 

http://msdn.microsoft.com/webservices/understanding/webservicebasics/default.aspx?pull=/library/en-us//dnsoap/html/understandsoap.asphttp://msdn.microsoft.com/webservices/understanding/webservicebasics/default.aspx?pull=/library/en-us//dnsoap/html/understandsoap.asphttp://www.w3.org/TR/2000/NOTE-SOAP-20000508/http://www.w3.org/TR/2000/NOTE-SOAP-20000508/http://msdn.microsoft.com/webservices/understanding/webservicebasics/default.aspx?pull=/library/en-us//dnsoap/html/understandsoap.asphttp://msdn.microsoft.com/webservices/understanding/webservicebasics/default.aspx?pull=/library/en-us//dnsoap/html/understandsoap.asp