We need use command 'GenerateStreamBlockFromPcap'.
Below are example to use the command to generate streamblock on port1
Using Tcl
stc::perform GenerateStreamBlockFromPcap -PcapFileName tcp.pcap -port $port1
Using Java:
sm.clear();
sm.put("pcapfilename", "tcp.pcap");
sm.put("port", port1);
stc.Perform(GenerateStreamBlockFromPcap, sm);