Function socket

host/network/src/main/state.js:9–14

(h)

    const allocSocket = (ws) => { sockets.push(ws); return sockets.length - 1; };
    const socket = (h) => {
        if (h < 0 || h >= sockets.length || sockets[h] === null) {
            throw new Error('invalid socket handle: ' + h);
        }
        return sockets[h];
    };

    const allocSse = (es) => { sseSources.push(es); return sseSources.length - 1; };
    const sse = (h) => {