IP address form data

I'm using the IdTCPserver component.

When a connection is made and data arrives it's processed in the OnExecute
method of the component.  I can read a write data fine but I would like to
know the IP address of where the packet came from.  I've been looking at the
properties of the component but can't find a peerIP property like in the UDP
component.

Any ideas how I can find the IP of the incoming data?

Thanks.