Unable to contact my own server

Question

I'm in the midst of trying to set up turtlebot and I have encountered this problem.

When I type "roslaunch turtlebot_bringup robot.launch" on my laptop, the following message appears

Unable to contact my own server at [http://10.217.252.66:58698/].
This usually means that the network is not configured properly.

I tried pinging myself and it works. Any ideas what might be wrong? Thanks

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Originally posted by ccm on ROS Answers with karma: 226 on 2011-06-12

Post score: 4

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Original comments

Comment by Haooo on 2016-03-05:
How to you check your .bashrc form and how do you find your ROS_IP

Comment by skr_robo on 2016-09-12:
You can open .bashrc by typing gedit ~/.bashrc in the terminal.

Answer 1

I solved it. I changed the following in my .bashrc from

export ROS_MASTER_URI=http://10.217.252.66:11311 
export ROS_HOSTNAME=10.217.252.66

to

export ROS_MASTER_URI=http://laptop_name:11311
export ROS_HOSTNAME=laptop_name

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Originally posted by ccm with karma: 226 on 2011-06-12

This answer was ACCEPTED on the original site

Post score: 9

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Original comments

Comment by Daniel Stonier on 2011-06-13:
If you wanted to use numbers, you may have needed ROS_IP instead of ROS_HOSTNAME.

Comment by rupendra on 2018-11-28:
Hi , i am getting the same problem as you said, i am able to get the ping result, but i am unable to run rviz . in that answer laptop_name means user name ?? .

Answer 2

you need $ export ROS_HOSTNAME=localhost $ export ROS_MASTER_URI=http://localhost:11311

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Originally posted by [email protected] with karma: 41 on 2016-09-27

This answer was NOT ACCEPTED on the original site

Post score: 4

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Original comments

Comment by muhammedozel on 2018-10-03:
how can we add this? Actually i am using ubuntu on macbook via parallels and there is no export about localhost or network settings

Answer 3

I solved it! You can open .bashrc at first with gedit ~/.bashrc in the terminal and then add the code export ROS_HOSTNAME=localhost export ROS_MASTER_URI=http://localhost:11311 at the end of this .bashrc file.

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Originally posted by yaoyao1900 with karma: 11 on 2019-03-06

This answer was NOT ACCEPTED on the original site

Post score: 1

Answer 4

export ROS_MASTER_URI=http://localhost:11311

export ROS_HOSTNAME=localhost

add these lines in bashrc.

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Originally posted by mirchi with karma: 31 on 2019-12-24

This answer was NOT ACCEPTED on the original site

Post score: 3