issue: send Connection refused

[githubnewers]

When type roslaunch, there is something wrong, hoping you can help to solve the problem.

what(): send Connection refused
[etherdaq_node-1] process has died [pid 8385, exit code -6, cmd /home/jch/opto_ws/devel/lib/optoforce_etherdaq_driver/etherdaq-node --address 192.168.1.1 --rate 1000 --filter 4_name:=etherdaq_node __log:=/home/jch/.ros/log/65ad45b4-ff50-11e7-ae2f-54ee757f3afb/etherdaq_node-1.log].log file: /home/jch/.ros/log/65ad45b4-ff50-11e7-ae2f-54ee757f3afb/etherdaq_node-1*.log