There are several ways to interpret this question I think, but in all of them the answer is no. All client-to-client communication in TFF must currently be intermediated by the server.
A little more detail: TFF provides no intrinsics which model 'information exchange' between clients, though in principle such a thing can exist. That is, TFF is designed in such a way that this could be added. However, there are no plans to pursue this path in the immediate future.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…