REQUEST:
POST /services/interopC HTTP/1.1
Host: www.dolphinharbor.org
Connection: Keep-Alive
User-Agent: EasySoap++/0.6
Content-Type: text/xml; charset="UTF-8"
SOAPAction: "http://soapinterop.org/"
Content-Length: 576

<E:Envelope
	xmlns:E="http://schemas.xmlsoap.org/soap/envelope/"
	xmlns:A="http://schemas.xmlsoap.org/soap/encoding/"
	xmlns:s="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:y="http://www.w3.org/2001/XMLSchema"
	E:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
<E:Header>
<ns1:echoMeStringRequest
	xmlns:ns1="http://other.soapinterop.org/echoheader/"
	s:type="y:string"
	E:mustUnderstand="1">This is a string in the header</ns1:echoMeStringRequest>
</E:Header>
<E:Body>
<m:echoVoid
	xmlns:m="http://soapinterop.org/"/>
</E:Body>
</E:Envelope>


RESPONSE:
HTTP/1.1 100 Continue



RESPONSE:
HTTP/1.1 500 Internal Server Error
Content-Type: text/xml; charset=UTF-8
Content-Length: 371

<?xml version="1.0"?>
<SOAP-ENV:Envelope SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"><SOAP-ENV:Body><SOAP-ENV:Fault><faultcode>SOAP-ENV:MustUnderstand</faultcode><faultstring>One or more mandatory headers not understood</faultstring></SOAP-ENV:Fault></SOAP-ENV:Body></SOAP-ENV:Envelope>