POST https://certificatemanager.comodo.com:443/ws/EPKIManagerSSL HTTP/1.1
...
SOAPAction: "http://ssl.ws.epki.comodo.com/#getWebServiceInfo"

<?xml version="1.0" encoding="UTF-8"?><soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" soap:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ssl="http://ssl.ws.epki.comodo.com/"><soap:Body><ssl:getWebServiceInfo xsi:nil="true" /></soap:Body></soap:Envelope>

HTTP/1.1 200 OK
Connection: close
Date: Thu, 11 Aug 2011 13:28:38 GMT
Server: Apache-Coyote/1.1
Content-Type: text/xml;charset=utf-8
...

<?xml version="1.0" ?><S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/"><S:Body><ns2:getWebServiceInfoResponse xmlns:ns2="http://ssl.ws.epki.comodo.com/"><return>Comodo Certificate Manager. SSL Web Service. Version 1.1.</return></ns2:getWebServiceInfoResponse></S:Body></S:Envelope>