JSTP is an RPC protocol and framework which provides two-way asynchronous data transfer with support of multiple parallel non-blocking interactions that is so transparent that an app may not even distinguish between local async functions and remote procedures.
And, as a nice bonus, there's a blazing fast JSON5 implementation bundled in!
This project is bound by a Code of Conduct.
JSTP works in Node.js and web browsers:
$ npm install --save @metarhia/jstpOr, alternatively, there is jstp.umd.js UMD bundle.
We also have official client-side implementations for Swift and Java that work effortlessly on iOS and Android 🎉
There is also an interactive CLI provided by this package:
$ npm install -g @metarhia/jstp
$ jstp-cliServer:
'use strict';
const jstp = require('@metarhia/jstp');
// Application is the core high-level abstraction of the framework. An app
// consists of a number of interfaces, and each interface has its methods.
const app = new jstp.Application('testApp', {
someService: {
sayHi(connection, name, callback) {
callback(null, `Hi, ${name}!`);
},
},
});
// Let's create a TCP server for this app. Other available transports are
// WebSocket and Unix domain sockets. One might notice that an array of
// applications is passed the `createServer()`. That's because it can serve
// any number of applications.
const server = jstp.net.createServer([app]);
server.listen(3000, () => {
console.log('TCP server listening on port 3000 🚀');
});Client:
'use strict';
const jstp = require('@metarhia/jstp');
// Create a TCP connection to server and connect to the `testApp` application.
// Clients can have applications too for full-duplex RPC,
// but we don't need that in this example. Client is `null` in this example,
// this implies that username and password are both `null`
// here — that is, the protocol-level authentication is not leveraged in this
// example. The next argument is an array of interfaces to inspect and build
// remote proxy objects for. Remaining arguments are for
// net.connect (host and port) and last argument is a callback
// to be called on successful connection or error.
jstp.net.connectAndInspect(
'testApp',
null,
['someService'],
3000,
'localhost',
handleConnect
);
function handleConnect(error, connection, app) {
if (error) {
console.error(`Could not connect to the server: ${error}`);
return;
}
// The `app` object contains remote proxy objects for each interface that has
// been requested which allow to use remote APIs as regular async functions.
// Remote proxies are also `EventEmitter`s: they can be used to `.emit()`
// events to another side of a connection and listen to them using `.on()`.
app.someService.sayHi('JSTP', (error, message) => {
if (error) {
console.error(`Oops, something went wrong: ${error}`);
return;
}
console.log(`Server said "${message}" 😲`);
});
}Kudos to @tshemsedinov for the initial idea and proof-of-concept implementation. Current project team is:
- @aqrln — Alexey Orlenko <[email protected]>
- @belochub — Mykola Bilochub <[email protected]>
- @lundibundi — Denys Otrishko <[email protected]>
- @nechaido — Dmytro Nechai <[email protected]>
- @tshemsedinov — Timur Shemsedinov <[email protected]>
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