nihilqui/examples/gjs/soup-3-websocket/client.ts

Typescript .d.ts generator from GIR for gjs and node-gtk

#!/usr/bin/env gjs -m
// SPDX-License-Identifier: MIT OR LGPL-2.0-or-later
// SPDX-FileCopyrightText: 2019 Sonny Piers <sonny@fastmail.net>

// This is an example of a WebSocket client in Gjs using libsoup
// https://libsoup.org/libsoup-3.0/index.html

// Based on https://gitlab.gnome.org/GNOME/gjs/-/blob/master/examples/websocket-client.js

import imports from './@types/gjs.js';
import GLib from 'gi://GLib?version=2.0';
import Soup from 'gi://Soup?version=3.0';
import Gio from 'gi://Gio?version=2.0';
const { byteArray } = imports;

const loop = GLib.MainLoop.new(null, false);

const session = new Soup.Session();
const message = new Soup.Message({
    method: 'GET',
    uri: GLib.Uri.parse('wss://echo.websocket.org', GLib.UriFlags.NONE)
});

session.websocket_connect_async(message, 'origin', [], 1, null, websocket_connect_async_callback);

function websocket_connect_async_callback(_session: Soup.Session, res: Gio.AsyncResult) {
    let connection: Soup.WebsocketConnection;

    try {
        connection = session.websocket_connect_finish(res);
    } catch (e) {
        logError(e);
        loop.quit();
        return;
    }

    connection.connect('closed', () => {
        log('closed');
        loop.quit();
    });

    connection.connect('error', (self, err) => {
        logError(err);
        loop.quit();
    });

    connection.connect('message', (self, type, data) => {
        if (type !== Soup.WebsocketDataType.TEXT)
            return;

        const str = byteArray.toString(byteArray.fromGBytes(data));
        log(`message: ${str}`);
        connection.close(Soup.WebsocketCloseCode.NORMAL, null);
    });

    log('open');
    connection.send_text('hello');
}

loop.run();