29 lines
747 B
JavaScript
29 lines
747 B
JavaScript
import {useEffect, useState} from 'react';
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export function useWebSocket(path, {host, schema} = {}) {
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const [socket, setSocket] = useState();
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useEffect(() => {
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async function connect() {
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const socket = new WebSocket(`${schema || ''}//${host || location.host}${path || '/'}`);
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socket.addEventListener('open', () => {
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setSocket(socket);
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});
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socket.addEventListener('close', ({reason}) => {
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if ('hmr' === reason) {
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connect();
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}
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setSocket(undefined);
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});
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}
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connect();
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return () => {
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setSocket((socket) => {
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if (socket) {
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socket.close();
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}
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return undefined;
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});
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}
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}, [path, host, schema]);
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return socket;
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} |