libcurl: (6) Could not resolve host: fuel.ignitionrobotics.org

eislerMeinName commented 1 year ago

Prerequisites

[ x] Put an X between the brackets on this line to verify you have done the following:
- I have checked that your issue isn't already filed.
- I am running Ubuntu 18.04
- I installed the environment and GymFC according to these instructions.

Description

Hey, I am currently trying to use GymFC for my bachelor thesis. I just installed it like shown in the video and used Gazebo11. Worked fine until trying out the test_step_sim script. When resetting the environment the script just hang up. After some time i got the already mentioned report: libcurl: (6) Could not resolve host: fuel.ignitionrobotics.org I debugged it into line 10 of the code, where the environment is reset, but did not dive further into it. At the moment i am using Arch Linux, but i also got the same mistake when using it on an Ubuntu 18.04 virtual machine. I hope you can help me with this problem.

Steps to Reproduce

start env, create sim...

Execute command X ob = env.reset() Output from command X libcurl: (6) Could not resolve host: fuel.ignitionrobotics.org

wil3 commented 1 year ago

Hi eislerMeinName,

Its been a long time since I looked at this project but my guess is Gazebo hasn't done a good job with backwards compatibility. Googling the issue it seems like a couple other people are having similar issues but no solution. What strange is there is an A record for that domain but I can't ping it.

Have you debugged where in the gazebo plugin is causing that call? If its happening from reset that occurs here. Uncommenting some of those debug statements may help to isolate which call is for whatever reason making a curl request. I'm wondering if its trying to grab a schema or something.

Something else that may help is looking at this resource. Maybe its something from within Gazebo.

eislerMeinName commented 1 year ago

Hey, sorry for the late answer. I realized that the problem occurs when there is a timeout when communicating with the flight control plugin. Reinstalled everything and did a new vm, now it works.

wil3 commented 1 year ago

Awesome! Glad to hear.

wil3 / gymfc