soapui vs groovy wslite.soap

Hi,

as a beginner I have a connection reset problem with groovy wslite soap, then I started using SOAPUI and I am surprised that my envelop works in SOAPUI and doesnot work in grails wslite.soap.

I have a question asked in stackoverflow, but until now unfortunately without response.

The question is https://stackoverflow.com/questions/56832622/wslite-soap-connection-reset-soapui-is-working-with-the-same-soap-envelop

I am still wondering what the solution can be. Please have a look, any suggestion is welcome.

Thanks in advance,

With kind regards.