ROS dies when wifi disconnects temporarily

ROS
wifi

asked 2015-07-31 12:41:15 -0600

robotSamir
46 ●3 ●4 ●6

I'm using ROS across two machines: robot and workstation

When the wifi on the robot disconnects (might happen when switching AP's), the ros processes die.

I tried using 127.0.0.1 for ROS_MASTER and ROS_HOSTNAME which solves the issue but my workstation cannot connect to the robot. I also tried using 0.0.0.0 for ROS_MASTER and ROS_HOSTNAME but ROS doesn't like it.

I've also tried ssh port forwarding but ROS uses many ports.

The command that I run on the robot is:

roslaunch turtlebot_bringup minimal.launch and roslaunch turtlebot_navigation amcl_demo.launch map_file:=/tmp/my_map.yaml

The command that I run on the wokstation is roslaunch turtlebot_rviz_launchers view_navigation.launch

How to solve this issue ?

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answered 2015-08-04 16:06:05 -0600

robotSamir
46 ●3 ●4 ●6

I used openVPN to create tun0 and then used that interface for ROS.

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answered 2015-08-02 11:30:21 -0600

nickw

flag of United Kingdom of Great Britain and Northern Ireland

1504 ●5 ●32 ●31 http://twitter.com/tinkernick

updated 2015-08-02 11:30:38 -0600

you could install screen https://help.ubuntu.com/community/Screen on the turtlebot, ssh in to it, run the launch file and then detach the screen so that if the wifi is disrupted then the processes do not die.

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This is not the problem. The issue isn't that the terminal is closed; the issue is that the wlan0 interface loses its ip for a little bit. In other words, this behaviour happens even if i start the processes locally on the the robot.

robotSamir ( 2015-08-03 13:51:36 -0600 )edit

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ROS dies when wifi disconnects temporarily

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