Jason LaPenta's profile - activity

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2017-09-21 10:54:28 -0500	received badge	● Nice Question (source)
2016-01-30 04:20:03 -0500	received badge	● Taxonomist
2015-11-06 10:51:11 -0500	received badge	● Nice Question (source)
2013-01-14 06:00:53 -0500	received badge	● Famous Question (source)
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2013-01-14 06:00:53 -0500	received badge	● Notable Question (source)
2012-08-24 00:06:09 -0500	received badge	● Famous Question (source)
2012-07-14 18:22:28 -0500	received badge	● Notable Question (source)
2012-05-07 22:41:35 -0500	received badge	● Popular Question (source)
2012-02-02 16:11:03 -0500	marked best answer	Kill roscore and all nodes when rosbag play finishes? If you're running all your nodes from the same launch file as the bag, just add required="true" to the node tag for rosbag. This will cause the entire roslaunch to die when rosbag terminates.
2012-01-25 02:33:12 -0500	commented answer	Kill roscore and all nodes when rosbag play finishes? this appears to work perfectly, thanks
2012-01-25 02:32:56 -0500	received badge	● Supporter (source)
2012-01-25 01:35:42 -0500	asked a question	Kill roscore and all nodes when rosbag play finishes? Hello, I'm writing some automated test scripts. I'd like to run a launch script with a bag file, which works fine. But when the rosbag play completes I would like roslaunch to exit so my script can load up a new bag file and rerun roslaunch with the test.launch file. Is there an elegant way to cause all ros nodes and roscore to exit when a bag file is finished? I was thinking of making another script to monitor when rosbag finished and then execute a rosnode kill, but I thought there might be a better way. Thanks, Jason
2012-01-05 08:39:13 -0500	received badge	● Student (source)
2012-01-05 07:35:31 -0500	asked a question	determine topic established port number for transport control Hello, I would like to use transport control, tc, to prioritize data on certain topic connections. How do I determine the port number for the topic connection between two nodes on different computers? rostopic info and rosnode info do not appear to give me this information. For example, this test shows connections between two nodes, ladybug_server and ladybug_viewer. The viewer is located on the "terminal" computer and the server is located on "robot" computer. The terminal and server computers are connected via wifi. In the below example the terminal is 10.42.43.237. the topics: `username@terminal:~/tc_test$ rostopic list /joy_tablet /ladybug_server/config /ladybug_server/frame_ack /ladybug_server/info /ladybug_server/realtime_video /ladybug_server/rsync_done /ladybug_server/snapshot_request /ladybug_server/snapshot_taken /map_pose_updater/pose_announce /rosout /rosout_agg` for example, trying to find the realtime video port `username@robot:~$ rostopic info /ladybug_server/realtime_video Type: ladybug/ladybugRealtimeVideo Publishers: * /ladybug_server (http://robot:59560/) Subscribers: * /ladybug_viewer (http://10.42.43.237:49643/)` Now trying to determine the established connections: username@terminal:~/tc_test$ sudo netstat -anp \| grep ladybug tcp 0 0 0.0.0.0:35060 0.0.0.0:* LISTEN 14359/ladybug_viewe tcp 0 0 0.0.0.0:49643 0.0.0.0:* LISTEN 14359/ladybug_viewe tcp 0 0 10.42.43.237:35060 10.42.43.1:50960 ESTABLISHED 14359/ladybug_viewe tcp 0 0 10.42.43.237:35060 10.42.43.1:50957 ESTABLISHED 14359/ladybug_viewe tcp 0 0 10.42.43.237:40618 10.42.43.1:49016 ESTABLISHED 14359/ladybug_viewe tcp 0 0 10.42.43.237:35060 10.42.43.1:50959 ESTABLISHED 14359/ladybug_viewe tcp 0 0 10.42.43.237:37043 10.42.43.1:11311 CLOSE_WAIT 14359/ladybug_viewe tcp 0 0 10.42.43.237:35060 10.42.43.1:50961 ESTABLISHED 14359/ladybug_viewe udp 0 0 0.0.0.0:49045 0.0.0.0:* 14359/ladybug_viewe unix 3 [ ] STREAM CONNECTED 102562 14359/ladybug_viewe username@robot:~$ sudo netstat -anp \| grep ladybug_ser tcp 0 0 0.0.0.0:49016 0.0.0.0:* LISTEN 12220/ladybug_serve tcp 0 0 0.0.0.0:59560 0.0.0.0:* LISTEN 12220/ladybug_serve tcp 0 0 10.42.43.1:50959 10.42.43.237:35060 ESTABLISHED 12220/ladybug_serve tcp 0 0 127.0.0.1:49016 127.0.0.1:38779 ESTABLISHED 12220/ladybug_serve tcp 0 0 10.42.43.1:50960 10.42.43.237:35060 ESTABLISHED 12220/ladybug_serve tcp 0 0 10.42.43.1:49016 10.42.43.237:40618 ESTABLISHED 12220/ladybug_serve tcp 1 0 10.42.43.1:53324 10.42.43.1:11311 CLOSE_WAIT 12220/ladybug_serve tcp 0 0 10.42.43.1:50961 10.42.43.237:35060 ESTABLISHED 12220/ladybug_serve udp 0 0 0.0.0.0:40540 0.0.0.0:* 12220/ladybug_serve The question is, which one of these ports is the connected realtime_video topic between the server and terminal? By monitoring the netstat output queued data for a while I can "guess" that the realtime video port is 49016/40618 because ... (more)