Call Rest WS SAP PI

Hello,

I am facing probleme concerning the creation of an interface that is connected to Rest Web service.The scénario is :

Rest web service <-->PI<-->ECC

The result of the call of the web service from PI is a file that I should transfer to ECC.

Any idea please How could I create my sender and reciver knowing I am using PI 7.10 ?

Cordialy