rosserial ServiceClient with request parameter

asked 2016-03-15 04:15:40 -0500

Cornec gravatar image

updated 2016-10-24 09:11:01 -0500

ngrennan gravatar image

Hi everyone,

i want to access a Ros-Service e.g. </turtlesim> over rosserial with parameter, what I am doing wrong?

#include <QCoreApplication>
#include "ros.h"
#include <ros/service_client.h>
#include <QDebug>
#include <string>
#include <stdio.h>
#include <windows.h>
#include <turtlesim/Spawn.h>
int main(int argc, char *argv[])
    QCoreApplication a(argc, argv);

    ros::NodeHandle nh;
    char *ros_master {nullptr};

    qDebug() << "connect to ros...";
    ros_master = "";
    nh.initNode (ros_master);

    ros::ServiceClient<turtlesim::Spawn::Request, turtlesim::Spawn::Response> turtle_client("spawn");

    turtlesim::Spawn::Request request;
    turtlesim::Spawn::Response response;"mikey";

    qDebug() << "connected";

    while(!nh.connected()) nh.spinOnce();
    qDebug() << "Name " <<;

    return a.exec();

I got no Errors. IP and Port are correct. When I stop the rosserial-server I get "Failed to receive data from server 10093" as response. Rosserial with Publishing and Subscribing to a topic works, Services without parameter too, but not with parameter.

When I execute "rosservice call /spawn 3 3 0 mikey" direct in Terminal, I get as response "[ INFO] [1458045806.306323136]: Spawning turtle [mikey] at x=[3], y=[3], theta=[0]" but when i execute the code above i got nothing.

I thought, maybe I have an evident failure in my code !?

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Well: what is the error (if any) that you receive? What did you try, what didn't work, and why do you think it should've worked, and what are your hypotheses for why it didn't work?

gvdhoorn gravatar image gvdhoorn  ( 2016-03-15 06:42:41 -0500 )edit

It may help if you could tell us a bit more what you are trying to do: why do you want to use rosserial, which platform is this running on and why do you feel you cannot use the normal roscpp client library?

gvdhoorn gravatar image gvdhoorn  ( 2016-03-16 06:53:29 -0500 )edit

Also: please don't bump your question (ie: edit with no real changes).

gvdhoorn gravatar image gvdhoorn  ( 2016-03-16 06:53:54 -0500 )edit