Hi,
Thanks for following up. Unfortunately upgrading to 4.3.1 of HttpClient doesn't resolve the problem (see log below). Interestingly, version 4.1.1 in soapUI 4.6.0 (contrary to what is reported in the JIRA) is working flawlessly for us.
Tue Nov 19 14:20:15 CET 2013:DEBUG: >> "POST /appStargate/ServiceS3G.svc HTTP/1.1[\r][\n]"
Tue Nov 19 14:20:15 CET 2013:DEBUG: >> "Accept-Encoding: gzip,deflate[\r][\n]"
Tue Nov 19 14:20:15 CET 2013:DEBUG: >> "Content-Type: text/xml;charset=UTF-8[\r][\n]"
Tue Nov 19 14:20:15 CET 2013:DEBUG: >> "SOAPAction: "
http://tempuri.org/IS3GService/InfoSolutionsSS4"[\r][\n]"Tue Nov 19 14:20:15 CET 2013:DEBUG: >> "Content-Length: 1559[\r][\n]"
Tue Nov 19 14:20:16 CET 2013:DEBUG: >> "Host: stargate.cert.trenitalia.com:8080[\r][\n]"
Tue Nov 19 14:20:16 CET 2013:DEBUG: >> "Connection: Keep-Alive[\r][\n]"
Tue Nov 19 14:20:16 CET 2013:DEBUG: >> "User-Agent: Apache-HttpClient/4.3.1 (java 1.5)[\r][\n]"
Tue Nov 19 14:20:16 CET 2013:DEBUG: >> "[\r][\n]"
Tue Nov 19 14:20:17 CET 2013:DEBUG: >> "<soapenv:Envelope xmlns:soapenv="
http://schemas.xmlsoap.org/soap/envelope/" xmlns:tem="
http://tempuri.org/" xmlns:tsf="
http://schemas.datacontract.org/2004/07/TSF.TI.NSV.Common.WCF.ServiceContracts">[\n]"Tue Nov 19 14:20:17 CET 2013:DEBUG: >> " <soapenv:Header>[\n]"
Tue Nov 19 14:20:17 CET 2013:DEBUG: >> " </soapenv:Header>[\n]"
Tue Nov 19 14:20:17 CET 2013:DEBUG: >> " <soapenv:Body>[\n]"
Tue Nov 19 14:20:17 CET 2013:DEBUG: >> " </soapenv:Body>[\n]"
Tue Nov 19 14:20:17 CET 2013:DEBUG: >> "</soapenv:Envelope>"
Tue Nov 19 14:20:17 CET 2013:DEBUG: << "HTTP/1.1 401 Unauthorized[\r][\n]"
Tue Nov 19 14:20:17 CET 2013:DEBUG: << "Server: Microsoft-IIS/7.0[\r][\n]"
Tue Nov 19 14:20:17 CET 2013:DEBUG: << "WWW-Authenticate: Negotiate[\r][\n]"
Tue Nov 19 14:20:17 CET 2013:DEBUG: << "WWW-Authenticate: NTLM[\r][\n]"
Tue Nov 19 14:20:17 CET 2013:DEBUG: << "X-Powered-By: ASP.NET[\r][\n]"
Tue Nov 19 14:20:17 CET 2013:DEBUG: << "Date: Tue, 19 Nov 2013 13:20:15 GMT[\r][\n]"
Tue Nov 19 14:20:17 CET 2013:DEBUG: << "Content-Length: 0[\r][\n]"
Tue Nov 19 14:20:17 CET 2013:DEBUG: << "[\r][\n]"
Tue Nov 19 14:20:18 CET 2013:DEBUG: >> "POST /appStargate/ServiceS3G.svc HTTP/1.1[\r][\n]"
Tue Nov 19 14:20:18 CET 2013:DEBUG: >> "Accept-Encoding: gzip,deflate[\r][\n]"
Tue Nov 19 14:20:18 CET 2013:DEBUG: >> "Content-Type: text/xml;charset=UTF-8[\r][\n]"
Tue Nov 19 14:20:18 CET 2013:DEBUG: >> "SOAPAction: "
http://tempuri.org/IS3GService/InfoSolutionsSS4"[\r][\n]"Tue Nov 19 14:20:18 CET 2013:DEBUG: >> "Content-Length: 1559[\r][\n]"
Tue Nov 19 14:20:18 CET 2013:DEBUG: >> "Host: stargate.cert.trenitalia.com:8080[\r][\n]"
Tue Nov 19 14:20:18 CET 2013:DEBUG: >> "Connection: Keep-Alive[\r][\n]"
Tue Nov 19 14:20:18 CET 2013:DEBUG: >> "User-Agent: Apache-HttpClient/4.3.1 (java 1.5)[\r][\n]"
Tue Nov 19 14:20:18 CET 2013:DEBUG: >> "[\r][\n]"
Tue Nov 19 14:20:18 CET 2013:DEBUG: >> "<soapenv:Envelope xmlns:soapenv="
http://schemas.xmlsoap.org/soap/envelope/" xmlns:tem="
http://tempuri.org/" xmlns:tsf="
http://schemas.datacontract.org/2004/07/TSF.TI.NSV.Common.WCF.ServiceContracts">[\n]"Tue Nov 19 14:20:18 CET 2013:DEBUG: >> " <soapenv:Header>[\n]"
Tue Nov 19 14:20:18 CET 2013:DEBUG: >> " </soapenv:Header>[\n]"
Tue Nov 19 14:20:18 CET 2013:DEBUG: >> " <soapenv:Body>[\n]"
Tue Nov 19 14:20:18 CET 2013:DEBUG: >> " </soapenv:Body>[\n]"
Tue Nov 19 14:20:18 CET 2013:DEBUG: >> "</soapenv:Envelope>"
Tue Nov 19 14:20:18 CET 2013:DEBUG: << "HTTP/1.1 401 Unauthorized[\r][\n]"
Tue Nov 19 14:20:18 CET 2013:DEBUG: << "Server: Microsoft-IIS/7.0[\r][\n]"
Tue Nov 19 14:20:18 CET 2013:DEBUG: << "WWW-Authenticate: Negotiate[\r][\n]"
Tue Nov 19 14:20:18 CET 2013:DEBUG: << "WWW-Authenticate: NTLM[\r][\n]"
Tue Nov 19 14:20:18 CET 2013:DEBUG: << "X-Powered-By: ASP.NET[\r][\n]"
Tue Nov 19 14:20:18 CET 2013:DEBUG: << "Date: Tue, 19 Nov 2013 13:20:16 GMT[\r][\n]"
Tue Nov 19 14:20:18 CET 2013:DEBUG: << "Content-Length: 0[\r][\n]"
Tue Nov 19 14:20:18 CET 2013:DEBUG: << "[\r][\n]"