no messages received in c++ subscriber

[OTL]

Now it is possible to publish from C++, (#27) but c++ listener does not work.

I'm talking about below case.

• Publisher: examples/publisher.rs
• Subscriber: roscpp_tutorials/listener

roscore

rosrun roscpp_tutorials listener

cd rosrust
./target/debug/publisher

rostopic echo /chatter works fine, because it is python(?).

[adnanademovic]

I'll just document what my debug process was.

Once I tapped into roscpp's debug log, it said this:

Node: /listener
Time: 14:45:14.590936769 (2017-12-31)
Severity: Debug
Published Topics: /rosout

XML-RPC call [requestTopic] didn't return an array

Location:
/tmp/binarydeb/ros-kinetic-roscpp-1.12.12/src/libros/xmlrpc_manager.cpp:XMLRPCManager::validateXmlrpcResponse:215

----------------------------------------------------------------------------------------------------

Using Wireshark I realized that for the XML-RPC Slave API, even though it's documented as returning 3 parameters, roscpp actually wants 1 array parameter with 3 fields. I'll do that fix throughout the Slave API, since I'm sure that it wants that kind of response for every method.

[adnanademovic]

I tested roscpp_tutorial/rospy_tutorial listener/talker/add_two_ints_service/add_two_ints_client, and it worked. Fix should be in 0.6.2 in a few minutes

[OTL]

great quick fix!!