it-ws/dist/src/duplex.js

Simple async iterables for websocket client connections

import sink from './sink.js';
import source from './source.js';
export default (socket, options) => {
    options = options ?? {};
    const connectedSource = source(socket);
    let remoteAddress = options.remoteAddress;
    let remotePort = options.remotePort;
    if (socket.url != null) {
        // only client->server sockets have urls, server->client connections do not
        try {
            const url = new URL(socket.url);
            remoteAddress = url.hostname;
            remotePort = parseInt(url.port, 10);
        }
        catch { }
    }
    if (remoteAddress == null || remotePort == null) {
        throw new Error('Remote connection did not have address and/or port');
    }
    const duplex = {
        sink: sink(socket, options),
        source: connectedSource,
        connected: async () => { await connectedSource.connected(); },
        close: async () => {
            if (socket.readyState === socket.CONNECTING || socket.readyState === socket.OPEN) {
                await new Promise((resolve) => {
                    socket.addEventListener('close', () => {
                        resolve();
                    });
                    socket.close();
                });
            }
        },
        destroy: () => {
            if (socket.terminate != null) {
                socket.terminate();
            }
            else {
                socket.close();
            }
        },
        remoteAddress,
        remotePort,
        socket
    };
    return duplex;
};
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