SOAP 1.1 Request - Content-Length Too Large

This section provides a tutorial example of SOAP 1.1 request to use the GetSpeech Web service provided at xmlme.com. Communication hangs if Content-Length is larger than the number of bytes in the request content, because the server will wait forever for more data.

In the previous tutorial, I was lazy and didn't want to count the number of bytes in XML message in my SOAP 1.1 request.

To count the number of bytes in XML message, I save it in a separate file, soap_1_1_GetTemp.xml. The extra blank line at the end indicates that I have a new line (\n) after the soap:Envelope ending tag.

<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope
 xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
 xmlns:ns1="urn:xmethods-Temperature-Demo"
 xmlns:xsd="http://www.w3.org/2001/XMLSchema"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
 SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
 <SOAP-ENV:Body>
  <ns1:getTemp>
   <zipcode xsi:type="xsd:string">12345</zipcode>
  </ns1:getTemp>
 </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

I use Windows File Explorer to locate this file, right-mouse-click it, and select Properties from the pop up menu. The Properties dialog box says "Size: 544 bytes (544 bytes)".

Let's put the 544 as Content-Length in soap_1_1_GetTemp.req:

POST /Service/TemperatureService.php HTTP/1.1
Host: www.herongyang.com
Connection: Keep-Alive
Content-Type: text/xml; charset=utf-8
SOAPAction: ""
Content-Length: 544

<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope
 xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
 xmlns:ns1="urn:xmethods-Temperature-Demo"
 xmlns:xsd="http://www.w3.org/2001/XMLSchema"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
 SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
 <SOAP-ENV:Body>
  <ns1:getTemp>
   <zipcode xsi:type="xsd:string">12345</zipcode>
  </ns1:getTemp>
 </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

Now we are ready to try again:

C:\herong>SocketRequestResponse.pl www.herongyang.com 80 
   soap_1_1_GetTemp.req soap_1_1.res
Terminating on signal SIGINT(2)

My SocketRequestResponse.pl hung for more than 5 minutes. I had to press Ctrl-C to terminate it. Why?

After some thinking and testing, I have a good guess on what happened here:

Now I learned that HTTP servers really respect the "Content-Length" header line in the request. I will fix my test program SocketRequestResponse.pl and try again in the next tutorial.

Last update: 2018.

Table of Contents

 About This Book

 Introduction to Web Service

 Introduction to SOAP (Simple Object Access Protocol)

 SOAP Message Structure

 SOAP Message Transmission and Processing

 SOAP Data Model

 SOAP Encoding

 SOAP RPC Presentation

 SOAP Properties Model

 SOAP MEP (Message Exchange Patterns)

 SOAP HTTP Binding

 SOAP PHP Implementations

 PHP SOAP Extension Client Programs

 PHP SOAP Extension Server Programs

 PHP SOAP Web Service Example - getTemp

 SOAP Perl Implementations

 Perl SOAP::Lite - SOAP Server-Client Communication Module

Perl Socket Test Program for HTTP and SOAP

 SocketRequestResponse.pl - Socket Level Testing Program

 Examples of HTTP 1.0 Requests and Responses

 Examples of HTTP 1.1 Requests and Responses

 SOAP 1.1 Request - Content-Length Too Small

SOAP 1.1 Request - Content-Length Too Large

 SOAP 1.1 Request and Response of GetTemp

 SOAP 1.2 Request and Response of GetTemp

 Perl SOAP::Lite for NumberToWords SOAP 1.1 Web Service

 Perl SOAP::Lite for SOAP 1.2 Web Services

 Perl SOAP::Lite for WSDL

 SOAP Java Implementations

 Java Socket and HttpURLConnection for SOAP

 SAAJ - SOAP with Attachments API for Java

 SoapUI - SOAP Web Service Testing Tool

 WS-Security - SOAP Message Security Extension

 WS-Security X.509 Certificate Token

 Perl SOAP::Lite for GetSpeech SOAP 1.1 Web Service

 Perl SOAP::Lite 0.710 for SOAP 1.2 Web Services

 Perl SOAP::Lite 0.710 for WSDL

 Web Services and SOAP Terminology

 Outdated Tutorials

 References

 Full Version in PDF/EPUB