Bidirectional communication Process on host h2 There are two separate bytestreams, one in each direction Process a on host h1Bidirectional communication: Byte 3 Byte 2 Byte 1 Byte 0 Process B on host H2 Byte 73 Byte 73 There are two separate bytestreams, one in each direction Process A on host H1 39 Byte 0 Byte 1 Byte 2 Byte 3