微信小程序WebSocket + Stomp在iPhone不工作

使用uni-app开发微信小程序，使用了WebSocket + Stomp发送数据。

但是在iPhone不能正常工作，在微信开发工具和安卓手机都没问题。

试了很多种方法，最后找到了解决方案。

// ios 缺少 0x00 导致解析失败

let socketOpen = false
let socketMsgQueue = []

export default {
    client: null,
    baseURL: 'ws://localhost:8080/stomp',
    init() {
        if (this.client) {
            console.log('use connected client')
            return Promise.resolve(this.client)
        }

        return new Promise((resolve, reject) => {
            const ws = {
                send: this.sendMessage,
                onopen: null,
                onmessage: null,
                close: this.closeSocket,
            }

            uni.connectSocket({
                url: this.baseURL,
                header: {
                    'X-ACCESS-TOKEN': uni.getStorageSync('token'),
                },
            })

            uni.onSocketOpen(res => {
                console.log('WebSocket连接已打开！', res)

                socketOpen = true
                for (let i = 0; i < socketMsgQueue.length; i++) {
                    ws.send(socketMsgQueue[i])
                }
                socketMsgQueue = []

                ws.onopen && ws.onopen()
            })

            uni.onSocketMessage(res => {
                if (res && res.data) {
                    let value = res.data
                    let code = value.charCodeAt(value.length - 1)
                     // ios 缺少 0x00 导致解析失败
                    if (code !== 0x00) {
                        value += String.fromCharCode(0x00)
                        res.data = value
                    }
                }

                ws.onmessage && ws.onmessage(res)
            })

            uni.onSocketError(res => {
                console.log('WebSocket 错误！', res)
                reject(res)
            })

            uni.onSocketClose((res) => {
                this.client.disconnect()
                this.client = null
                socketOpen = false
                console.log('WebSocket 已关闭！', res)
                reject(res)
            })

            const Stomp = require('./stomp.js').Stomp
            const client = this.client = Stomp.over(ws)
            client.reconnect_delay = 3000

            client.connect({}, () => {
                console.log('stomp connect')
                resolve(client)
            }, (error) => {
                console.error(error)
            })
        })
    },
    disconnect(reason = '') {
        console.log('disconnect', reason)
        uni.closeSocket({reason: reason})
    },
    sendMessage(message) {
        if (socketOpen) {
            uni.sendSocketMessage({
                data: message,
            })
        } else {
            socketMsgQueue.push(message)
        }
    },
    closeSocket() {
        console.log('closeSocket')
    },
}

https://raw.githubusercontent.com/stomp-js/stomp-websocket/master/lib/stomp.js