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Rosjava subscriber doesn't get any data

asked 2019-07-02 15:41:02 -0500

luischd
18 ●2 ●3 ●6

updated 2019-07-04 04:41:11 -0500

gvdhoorn
86574 ●283 ●1432 ●1054 http://cor.tudelft.nl/

I'm trying to use a rosbag as a topic publisher to receive the data on my phone and update the info I have on my app. I've been looking around and I think the main issue is this console output:

E/UpdatePublisherRunnable: java.lang.RuntimeException: java.net.UnknownHostException: Unable to resolve host "mypcname": No address associated with hostname

Im playing a rosbag from my pc and made sure the topic is working. I used the debug of android studio and the subscriber gets setted properly, but when I should receive the message the onNewMessage never triggers. I have setted up the ROS_MASTER_URI, ROS_IP and ROS_HOSTNAME correctly on my pc.

Not sure what to do to solve this and couldn't find a proper answer anywhere. Thanks in advance.

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Comments

I do not have a solution but have you...

[1] ..run a 'IsPortOpen' before the error exception. [2] ...called addMessageListener(MessageListener<t!> { ... prior to onNewMessage ?

Tav_PG ( 2019-07-02 23:49:14 -0500 )edit

Please post your EDIT as an answer and accept your own answer.

gvdhoorn ( 2019-07-04 04:03:40 -0500 )edit

I can't accept my own answer, a pop-up says 10 points are required

luischd ( 2019-07-04 04:39:45 -0500 )edit

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answered 2019-07-04 04:37:50 -0500

luischd
18 ●2 ●3 ●6

SOLVED:

My code was all good and the network configuration before roscore too. The only problem was that I didn't know you had to set up the ROS_MASTER_URI, ROS_IP and ROS_HOSTNAME on every console you are using for Ros. I was playing the rosbag on a different console (not on the roscore one) and the subscriber was publishing on localhost -> mypcname, which is the default value. To see if you have setted up your network values try echo $ROS_MASTER_URI.

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Asked: 2019-07-02 15:41:02 -0500

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Last updated: Jul 04 '19

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