Herong's Tutorial Notes on Web Service and SOAP
Dr. Herong Yang, Version 4.00

Request Differences between SOAP 1.1 and SOAP 1.2

This section describes differences between a SOAP 1.1 request and SOAP 1.2 request for GetSpeech Web service provided by xmlme.com.

Remember that I goal is to use SOAP::Lite to send SOAP 1.2 request to the xmlme.com server.

Before writing the client program, let's compare the SOAP 1.1 request with the SOAP 1.2 request provided at: http://www.xmlme.com/WSShakespeare.asmx?op=GetSpeech.

SOAP 1.1 request: 

POST /WSShakespeare.asmx HTTP/1.1
Host: www.xmlme.com
Content-Type: text/xml; charset=utf-8
Content-Length: length
SOAPAction: "http://xmlme.com/WebServices/GetSpeech"

<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
  <soap:Body>
    <GetSpeech xmlns="http://xmlme.com/WebServices">
      <Request>string</Request>
    </GetSpeech>
  </soap:Body>
</soap:Envelope>


SOAP 1.2 request:

POST /WSShakespeare.asmx HTTP/1.1
Host: www.xmlme.com
Content-Type: application/soap+xml; charset=utf-8
Content-Length: length

<?xml version="1.0" encoding="utf-8"?>
<soap12:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">
  <soap12:Body>
    <GetSpeech xmlns="http://xmlme.com/WebServices">
      <Request>string</Request>
    </GetSpeech>
  </soap12:Body>
</soap12:Envelope>

I see 3 differences:

  • SOAP 1.2 uses "application/soap+xml" as Content-Type and SOAP 1.1 uses "text/xml".
  • SOAP 1.2 does not use SOAPAction header line.
  • SOAP 1.2 uses "http://www.w3.org/2003/05/soap-envelope" as the envolope namespace and SOAP 1.1 uses "http://schemas.xmlsoap.org/soap/envelope/".

Now I known where to pay attention to generate a correct SOAP 1.2 request.

Last update: 2009.

Sections in This Chapter

Installing SOAP::Lite 0.710 to Support SOAP 1.2

Features in SOAP::Lite 0.710

Methods on SOAP::Lite 0.710 Client Object

Testing SOAP::Lite Client Objects

Request Differences between SOAP 1.1 and SOAP 1.2

GetSpeech_localhost.pl - Testing GetSpeech on Local Host

soapversion('1.2') and envprefix('soap12') Must Used Together

default_ns() - Setting Default namespace for Body Elements

SOAP::Data - Utility Class to Generate XML Elements

SOAPAction - Not Needed, But No Way to Remove It

Unsupported Media Type: "application/soap"

DEFAULT_HTTP_CONTENT_TYPE='application/soap+xml'

content_type() method in the HTTP::Headers Class

GetSpeech_SOAP_1_2.pl - SOAP::Lite for SOAP 1.2 Web Service

Dr. Herong Yang, updated in 2009
Request Differences between SOAP 1.1 and SOAP 1.2