Error launching remote node: not a valid URL

edit

Hi all:

I have an issue launching a single talker and listener in two machines. It seems like one of the nodes is launched properly but with the other one (launched in the remote machine) is unable to start due to an error parsing the URI of the host. I tried to find some more information about the error but I have found nothing on the Internet.

This is the log of the roslaunch process: seems like both machines are connected properly and roslaunch tries to execute the listener node in the remote machine after launching the talker node successfully, and then it fails:

    [roslaunch][INFO] 2015-07-02 10:23:40,469: ... successfully launched [talker_java-1]
    [roslaunch][INFO] 2015-07-02 10:23:40,470: launch_nodes: launching remote nodes ...
    [roslaunch][INFO] 2015-07-02 10:23:40,568: [172.16.243.46-0]: launching nodes...
    [roslaunch][ERROR] 2015-07-02 10:23:40,633: error launching on [172.16.243.46-0, uri http://172.16.243.46:44845/]: ERROR: Traceback (most recent call last):
  File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/server.py", line 331, in launch
    succeeded, failed = runner.launch()
  File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/launch.py", line 646, in launch
    self._setup()
  File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/launch.py", line 622, in _setup
    self._launch_master()
  File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/launch.py", line 386, in _launch_master
    validate_master_launch(m, self.is_core, self.is_rostest)
  File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/launch.py", line 81, in validate_master_launch
    if not rosgraph.network.is_local_address(m.get_host()):
  File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/core.py", line 272, in get_host
    host, _ = rosgraph.network.parse_http_host_and_port(self.uri)
  File "/opt/ros/indigo/lib/python2.7/dist-packages/rosgraph/network.py", line 91, in parse_http_host_and_port
    raise ValueError('not a valid URL')
ValueError: not a valid URL

[roslaunch][ERROR] 2015-07-02 10:23:40,633: Launch of the following nodes most likely failed: beginner_tutorials/listener
[roslaunch][INFO] 2015-07-02 10:23:40,633: ... launch_nodes complete
[more unrelated log lines here after the error...]
[roslaunch.pmon][INFO] 2015-07-02 10:23:47,637: ProcessMonitor exit: killing 172.16.243.46-0
[roslaunch][INFO] 2015-07-02 10:23:47,637: [172.16.243.46-0] killing on exit
[roslaunch.remoteprocess][INFO] 2015-07-02 10:23:47,651: remote[172.16.243.46-0]: closing ssh connection
[roslaunch.remoteprocess][INFO] 2015-07-02 10:23:47,729: remote[172.16.243.46-0]: ssh connection closed
[roslaunch][INFO] 2015-07-02 10:23:48,037: process[talker_java-1]: SIGINT killed with return value 130

This is the .launch file I am trying to test:

<launch>

<machine name="adrian-laptop" address="172.16.243.46" user="adrian" env-loader="rosws/adrian-laptop-envloader.sh"/>
<machine name="ctdesks50" address="172.16.243.5" user="adrian.gonzalez" />

<node pkg="rosjava_tutorial" name="talker_java" type="execute" args="com.github.rosjava.rosjava_tutorial.my_pub_sub_tutorial.Talker" machine="ctdesks50"/>
<node pkg="beginner_tutorials" name="listener_C" type="listener" output="screen" machine="adrian-laptop"/>

</launch>

And the env-loader in the remote machine is this one:

#!/bin/bash
export ROS_MASTER_URI=172.16.243 ...