In this paper, the authors study Transport Control Protocol (TCP) in-cast congestion control. In cast may severely degrade their performances by increasing response time also they study among TCP throughput, Round Trip Time (RTT) and receive window. Their idea is to design an ICTCP (In cast congestion Control for TCP) scheme at the receiver side. In particular, their method adjusts TCP receive window proactively before packet drops occur. The implementation and techniques demonstrate that they achieve almost zero timeout and high good put for TCP in cast.