Node.js* Client & Web Bridge Ready for ROS* 2.0 Minggang Wang September 30 2018 Agenda ● Who We Are ● Why Use Node.js & Web in Robotics ● Thinking in “ROS 2.0 + Web” ● What We Have Done for “ROS of Intel's open source development efforts. ● We’re from OTC Web Team; we do web technology in client, edge, cloud, IoT, W3C standard, Robotics & etc., to keep web open, secure, rich-featured and performant 2 packages. Both hosted in GitHub RWT thanks to Jihoon ● rclnodejs (github repo) It’s a Node.js client of ROS 2.0. It provides fast, easy & powerful JavaScript API of ROS 2.0 ● ros2-web-bridge (github

Guzzle Guzzle is a PHP HTTP client that makes it easy to send HTTP requests and trivial to integrate with web services. Manages things like persistent connections, represents query strings as collections around with cURL options, stream contexts, or sockets. $client = new GuzzleHttp\Client(); $response = $client->get('http://guzzlephp.org'); $res = $client->get('https://api.github.com/user', ['auth' => ['user' JSON decoded data // Send an asynchronous request. $req = $client->createRequest('GET', 'http://httpbin.org', ['future' => true]); $client->send($req)->then(function ($response) { echo 'I completed

54 2 HTTP Components 57 3 Service Description Commands 59 i ii Guzzle Guzzle is a PHP HTTP client that makes it easy to send HTTP requests and trivial to integrate with web services. • Manages things around with cURL options, stream contexts, or sockets. $client = new GuzzleHttp\Client(); $response = $client->get('http://guzzlephp.org'); $res = $client->get('https://api.github.com/user', ['auth' => ['user' JSON decoded data // Send an asynchronous request. $req = $client->createRequest('GET', 'http://httpbin.org', ['future' => true]); $client->send($req)->then(function ($response) { echo 'I completed!

com/mediocregopher/radix.v2/redis" ) func main() { client, _ := redis.Dial("tcp", "localhost:6379") defer client.Close() repl := client.Cmd("PING") content, _ := repl.Str() fmt.Println(content) com/mediocregopher/radix.v2/redis" ) func main() { client, _ := redis.Dial("tcp", "localhost:6379") defer client.Close() repl := client.Cmd("PING") content, _ := repl.Str() fmt.Println(content) com/mediocregopher/radix.v2/redis" ) func main() { client, _ := redis.Dial("tcp", "localhost:6379") defer client.Close() repl := client.Cmd("PING") content, _ := repl.Str() fmt.Println(content)

index next | Guzzle 6 » Guzzle Documentation Guzzle is a PHP HTTP client that makes it easy to send HTTP requests and trivial to integrate with web services. Simple interface for building query strings non-blocking event loops. Middleware system allows you to augment and compose client behavior. $client = new GuzzleHttp\Client(); $res = $client->request('GET', 'https://api.github.com/user', [ 'auth' => ['user' asynchronous request. $request = new \GuzzleHttp\Psr7\Request('GET', 'http://httpbin.org'); $promise = $client->sendAsync($request)->then(function ($response) { echo 'I completed! ' . $response->getBody();

index next | Guzzle 6 » Guzzle Documentation Guzzle is a PHP HTTP client that makes it easy to send HTTP requests and trivial to integrate with web services. Simple interface for building query strings non-blocking event loops. Middleware system allows you to augment and compose client behavior. $client = new GuzzleHttp\Client(); $res = $client->request('GET', 'https://api.github.com/user', [ 'auth' => ['user' asynchronous request. $request = new \GuzzleHttp\Psr7\Request('GET', 'http://httpbin.org'); $promise = $client->sendAsync($request)->then(function ($response) { echo 'I completed! ' . $response->getBody();

. . . . . . . . . . . . . . . . . . . . . . . . . 46 ii Guzzle, Release Guzzle is a PHP HTTP client that makes it easy to send HTTP requests and trivial to integrate with web services. • Simple interface event loops. • Middleware system allows you to augment and compose client behavior. $client = new GuzzleHttp\Client(); $res = $client->request('GET', 'https://api.github.com/user', [ 'auth' => ['user' asynchronous request. $request = new \GuzzleHttp\Psr7\Request('GET', 'http://httpbin.org'); $promise = $client->sendAsync($request)->then(function ($response) { echo 'I completed! ' . $response->getBody(); });

. . . . . . . . . . . . . . . . . . . . . . . . . 46 ii Guzzle, Release Guzzle is a PHP HTTP client that makes it easy to send HTTP requests and trivial to integrate with web services. • Simple interface event loops. • Middleware system allows you to augment and compose client behavior. $client = new GuzzleHttp\Client(); $res = $client->request('GET', 'https://api.github.com/user', [ 'auth' => ['user' asynchronous request. $request = new \GuzzleHttp\Psr7\Request('GET', 'http://httpbin.org'); $promise = $client->sendAsync($request)->then(function ($response) { echo 'I completed! ' . $response->getBody(); });

index next | Guzzle 6 » Guzzle Documentation Guzzle is a PHP HTTP client that makes it easy to send HTTP requests and trivial to integrate with web services. Simple interface for building query strings non-blocking event loops. Middleware system allows you to augment and compose client behavior. $client = new GuzzleHttp\Client(); $res = $client->request('GET', 'https://api.github.com/user', [ 'auth' => ['user' asynchronous request. $request = new \GuzzleHttp\Psr7\Request('GET', 'http://httpbin.org'); $promise = $client->sendAsync($request)->then(function ($response) { echo 'I completed! ' . $response->getBody();

. . . . . . . . . . . . . . . . . . . . . . . . . 44 ii Guzzle, Release Guzzle is a PHP HTTP client that makes it easy to send HTTP requests and trivial to integrate with web services. • Simple interface event loops. • Middleware system allows you to augment and compose client behavior. $client = new GuzzleHttp\Client(); $res = $client->request('GET', 'https://api.github.com/user', [ 'auth' => ['user' asynchronous request. $request = new \GuzzleHttp\Psr7\Request('GET', 'http://httpbin.org'); $promise = $client->sendAsync($request)->then(function ($response) { echo 'I completed! ' . $response->getBody(); });