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@foxglove/ros1

Standalone TypeScript implementation of the ROS 1 (Robot Operating System) protocol with a pluggable transport layer

Usage

// An example client that connects to the ROS1 turtlesim node

import { RosNode } from "@foxglove/ros1";
import { getEnvVar, getHostname, getNetworkInterfaces, getPid, TcpSocketNode } from "@foxglove/ros1/nodejs";
import { HttpServerNodejs } from "@foxglove/xmlrpc/nodejs";

async function main() {
  const name = "/testclient";
  let rosNode: RosNode | undefined;

  try {
    rosNode = new RosNode({
      name,
      rosMasterUri: getEnvVar("ROS_MASTER_URI") ?? "http://localhost:11311/",
      hostname: RosNode.GetRosHostname(getEnvVar, getHostname, getNetworkInterfaces),
      pid: getPid(),
      httpServer: new HttpServerNodejs(),
      tcpSocketCreate: TcpSocketNode.Create,
      log: console,
    });

    await rosNode.start();

    const params = await rosNode.subscribeAllParams();
    console.dir(params);

    const sub = rosNode.subscribe({
      topic: "/turtle1/color_sensor",
      dataType: "turtlesim/Color",
    });

    sub.on("message", (msg, data, pub) => {
      console.log(
        `[MSG] ${JSON.stringify(msg)} (${
          data.byteLength
        } bytes from ${pub.connection.getTransportInfo()})`,
      );
    });

    await new Promise((resolve) => setTimeout(resolve, 1000));

    console.dir(sub.getStats());
  } catch (err) {
    const msg = (err as Error).stack ?? `${err}`;
    console.error(msg);
  } finally {
    rosNode?.shutdown();
  }
}

void main();

Test

yarn test

License

@foxglove/ros1 is licensed under the MIT License.

Releasing

1. Run yarn version --[major|minor|patch] to bump version
2. Run git push && git push --tags to push new tag
3. GitHub Actions will take care of the rest

Stay in touch

Join our Slack channel to ask questions, share feedback, and stay up to date on what our team is working on.