input from the DMSopen shell script is sometimes not received by the python script

[benemorius]

They're udp packets but they're sent and received on localhost so it's odd that one would ever get dropped.

Here are the logs after two failed badge scan attempts followed by a third that is successful. All three appear in the shell script log, but only the third is logged by python.

Previously this was assumed to be a hardware problem, but clearly it isn't.

root@wiegand:~ # tail -n40 /home/pi/dmsopen.log | sed -r 's/([^\.])[0-9]{6}/\1/g'  | head
2018-04-17 17:40:39.147973 {"door":"11", "badge":"10"}
2018-04-17 17:41:45.357509 {"door":"13", "badge":"10"}
2018-04-17 17:43:27.082498 {"door":"12", "badge":"64"}
2018-04-17 17:44:18.490398 {"door":"14", "badge":"33"}
2018-04-17 17:44:53.213589 {"door":"13", "badge":"38"}
2018-04-17 17:44:56.768787 {"door":"12", "badge":"23"} ###
2018-04-17 17:45:02.007200 {"door":"12", "badge":"23"} ###
2018-04-17 17:45:11.627313 {"door":"12", "badge":"23"} ###
2018-04-17 17:45:44.502695 {"door":"11", "badge":"28"}
2018-04-17 17:47:16.821198 {"door":"13", "badge":"75"}
root@wiegand:~ # tail -n40 /root/dms_dev_log | sed -r 's/([^\.])[0-9]{5}/\1/g'  | head
2018-04-17 17:39:39.263 - Opening door 12 for badge 75
2018-04-17 17:40:00.585 - Opening door 13 for badge 35
2018-04-17 17:40:39.154 - Opening door 11 for badge 0
2018-04-17 17:41:45.361 - Opening door 13 for badge 0
2018-04-17 17:43:27.118 - Opening door 12 for badge 64
2018-04-17 17:44:18.535 - Opening door 14 for badge 33
2018-04-17 17:44:53.221 - Opening door 13 for badge 38
2018-04-17 17:45:11.671 - Opening door 12 for badge 23 ###
2018-04-17 17:45:45.513 - Opening door 11 for badge 28
2018-04-17 17:47:16.834 - Opening door 13 for badge 75