@tarojs/taro-h5/dist/api/network/websocket/index.js

Taro h5 framework

import { shouldBeObject, getParameterError } from '../../../utils/index.js';
import { MethodHandler } from '../../../utils/handler.js';
import { SocketTask } from './socketTask.js';

let socketTasks = [];
let socketsCounter = 1;
function sendSocketMessage() {
    console.warn('Deprecated.Please use socketTask.send instead.');
}
function onSocketOpen() {
    console.warn('Deprecated.Please use socketTask.onOpen instead.');
}
function onSocketMessage() {
    console.warn('Deprecated.Please use socketTask.onMessage instead.');
}
function onSocketError() {
    console.warn('Deprecated.Please use socketTask.onError instead.');
}
function onSocketClose() {
    console.warn('Deprecated.Please use socketTask.onClose instead.');
}
function connectSocket(options) {
    const name = 'connectSocket';
    return new Promise((resolve, reject) => {
        // options must be an Object
        const isObject = shouldBeObject(options);
        if (!isObject.flag) {
            const res = { errMsg: `${name}:fail ${isObject.msg}` };
            console.error(res.errMsg);
            return reject(res);
        }
        const { url, protocols, success, fail, complete } = options;
        const handle = new MethodHandler({ name, success, fail, complete });
        // options.url must be String
        if (typeof url !== 'string') {
            return handle.fail({
                errMsg: getParameterError({
                    para: 'url',
                    correct: 'String',
                    wrong: url
                })
            }, { resolve, reject });
        }
        // options.url must be invalid
        if (!url.startsWith('ws://') && !url.startsWith('wss://')) {
            return handle.fail({
                errMsg: `request:fail invalid url "${url}"`
            }, { resolve, reject });
        }
        // protocols must be array
        const _protocols = Array.isArray(protocols) ? protocols : null;
        // 2 connection at most
        if (socketTasks.length >= 5) {
            return handle.fail({
                errMsg: '同时最多发起 5 个 socket 请求，更多请参考文档。'
            }, { resolve, reject });
        }
        const task = new SocketTask(url, _protocols);
        task._destroyWhenClose = function () {
            socketTasks = socketTasks.filter(socketTask => socketTask !== this);
        };
        socketTasks.push(task);
        handle.success({
            socketTaskId: socketsCounter++
        });
        return resolve(task);
    });
}
function closeSocket() {
    console.warn('Deprecated.Please use socketTask.close instead.');
}

export { SocketTask, closeSocket, connectSocket, onSocketClose, onSocketError, onSocketMessage, onSocketOpen, sendSocketMessage };
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