SOAP Web Service Tutorials - Herong's Tutorial Examples - v5.13, by Herong Yang
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:
herong> perl 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.
Table of Contents
Introduction to SOAP (Simple Object Access Protocol)
SOAP Message Transmission and Processing
SOAP MEP (Message Exchange Patterns)
PHP SOAP Extension Client Programs
PHP SOAP Extension Server Programs
PHP SOAP Web Service Example - getTemp
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
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