Adds iperf timeout for bandwith measurements.

measurement_main.py

 NR_EN_DC_STATUS_COMMAND = b"AT+QENDC\r\n"
 NR_SERIAL_RESPOND_TIME = 0.3  # s
 CMD_TIME_EPOCH = "date +%s"
+TIMEOUT_OFFSET = 5.0
 
 
 class ProcessHandler:
                     self.config["port"],
                 )
                 try:
-                    subprocess.call(iperf_command, timeout=float(time) + 1)
+                    subprocess.call(iperf_command, timeout=float(time) + 1 + TIMEOUT_OFFSET)
                 except:
                     print_message("iPerf timed out. Going ahead with next measurement...")
                 processHandler.kill_all()
                     "--one-off",
                 ]
                 try:
-                    subprocess.call(iperf_command, timeout=float(time) + 1.0)
+                    subprocess.call(iperf_command, timeout=float(time) + 1.0 + TIMEOUT_OFFSET)
                 except:
                     print_message("iPerf timed out. Going ahead with next measurement...")
                 sleep(2)
                     tcp_algo[congestion_control_index],
                 ]
                 try:
-                    subprocess.call(iperf_command, timeout=float(time) + 2)
+                    subprocess.call(iperf_command, timeout=float(time) + 2 + TIMEOUT_OFFSET)
                 except:
                     print_message("iPerf timed out. Going ahead with next measurement...")
                 sleep(4)
                 )
                 sleep(2)
                 try:
-                    subprocess.call(iperf_command, timeout=float(time)+2)
+                    subprocess.call(iperf_command, timeout=float(time)+ 2 + TIMEOUT_OFFSET)
                 except:
                     print_message("iPerf timed out. Going ahead with next measurement...")
                 processHandler.kill_all()