structure of Webservice for both sender and receiver

Hi Everyone,

I am new to HCI and have 30 day trail period from SAP.

I dont have any server to test my scenerio end to end.

So I thought of going for SOAP -PI -SOAP scenerio to get understanding of the same.

Can anyone provide me the link from where I can get the structure for both ends ?

or is there any other way where I can do hands-on?

Thanks in advance