Skip to main content

Services and Actions

ROS 2 Services​

Services provide a request/response communication mechanism, ideal for synchronous operations where a client sends a request and waits for a server to respond.

Defining a Service​

A service is defined by a pair of .srv files (Request and Response).

ROS 2 Actions​

Actions provide a request/feedback/result communication mechanism, suitable for long-running tasks where clients need feedback on progress and can cancel the goal.

Defining an Action​

An action is defined by a .action file (Goal, Result, Feedback).

Example Implementations​

This section will provide example implementations for a basic ROS 2 Service Server/Client and an Action Server/Client.