Websocket Client auto-connect/reconnect implementation for React Native

gistfile1.txt

export default class WebSocketClient {

    constructor(url) {
        this.number = 0;	// Message number
        this.autoReconnectInterval = 12*1000;	// ms
        this.url = url;
        this.open();
    }

    open (url){
        console.log("WebSocketClient: Connecting...");
        if (url) this.url = url;
        this.instance = new WebSocket(this.url);
        console.log(this.instance);
        this.instance.onopen = ()=>{
            this.onopen();
        };
        this.instance.onmessage = (data,flags)=>{
            this.number ++;
            this.onmessage(data,flags,this.number);
        };
        this.instance.onclose = (e)=>{
            switch (e.code){
            case 1000:	// CLOSE_NORMAL
                console.log("WebSocket: closed");
                break;
            default:	// Abnormal closure
                this.reconnect(e);
                break;
            }
            this.onclose(e);
        };
        this.instance.onerror = (e)=>{
            switch (e.code){
            case 'ECONNREFUSED':
                this.reconnect(e);
                break;
            default:
                this.onerror(e);
                break;
            }
        };
    }
    send (data,option){
        try{
            this.instance.send(data,option);
        }catch (e){
            console.error(e);
        }
    }
    reconnect (e){
        console.log(`WebSocketClient: retry in ${this.autoReconnectInterval}ms`,e);
        //this.instance.removeAllListeners();
        var that = this;
        setTimeout(function(){
            that.open(that.url);
        },this.autoReconnectInterval);
    }
    onopen (e){	console.log("WebSocketClient: open",arguments);	}
    onmessage (data,flags,number){	console.log("WebSocketClient: message",arguments);	}
    onerror (e){	console.log("WebSocketClient: error",arguments);	}
    onclose (e){	console.log("WebSocketClient: closed",arguments);	}
}

From https://github.com/websockets/ws/wiki/Websocket-client-implementation-for-auto-reconnect