const MAGIC=0xdead;
const PKT_TYPE=function(){
    var len = 0;
    return {
        PKT_TYPE_ACK:len++,             
        PKT_TYPE_PARAS:len++,             
        PKT_TYPE_POWER_CH:len++,          //power_ch_t
        PKT_TYPE_POWER_TOTAL:len++,       //power_total_t
        PKT_TYPE_POWER_RESET:len++,
        PKT_TYPE_CH_ALL:len++,
        PKT_TYPE_SCAN:len++,
        PKT_TYPE_FACTORY:len++,
        PKT_TYPE_ALARM:len++,
        PKT_TYPE_SENSOR:len++,
        PKT_TYPE_BREAKER:len++,
        PKT_TYPE_STAT:len++,
        PKT_TYPE_MESG:len++,
        PKT_TYPE_FILE:len++,
    }
}();
const SUB_TYPE=function(){
    var len = 0;
    return {
        SUB_TYPE_POWER_SWITCH:len++,             
        SUB_TYPE_POWER_ALARM:len++,             
        SUB_TYPE_POWER_THRESHOLD:len++,          //power_ch_t
        SUB_TYPE_POWER_START_DELAY:len++,       //power_total_t
        SUB_TYPE_POWER_STOP_DELAY:len++,
    }
}();

const PDU_TYPE=function(){
    var len = 0;
    return {
    PDU_AC_I1O1:len++,
    PDU_DC_I1O1:len+=2,
    PDU_AC_I3O3:len++,
    PDU_AC_I3O1:len++,
    PDU_AC_I3O1_H:len++,
    }
}();

const ALARM_ACT=function(){
    var len = 1;
    return {
    ALARM_ACT_CLOSE_CH:len++,
    ALARM_ACT_MESG:len++,
    ALARM_ACT_CLOSE_CHALL:len++,
    }
}();


///////////////////////////////////////////////////////
function array_to_string(data){
    const decoder = new TextDecoder();
    return decoder.decode(new Uint8Array(data));
}

function string_to_array(data,len){
    const encoder = new TextEncoder(); // ĬÈÏ'utf-8'±àÂë
    const buffer = encoder.encode(data);
    const fixedArray = new Uint8Array(len);
    fixedArray.set(buffer);
    fixedArray.fill(0, buffer.length);
    return fixedArray.buffer;
}
function array_cat(a1,a2){
    var tlen=a1.byteLength+a2.byteLength;
    var buffer = new ArrayBuffer(tlen);
    var vw = new Uint8Array(buffer);
    
    var vw1 = new Uint8Array(a1);
    for(var i=0; i<a1.byteLength; i++) {
        vw[i] = vw1[i];
    }
    
    var vw2 = new Uint8Array(a2);
    for(var i=0; i<a2.byteLength; i++) {
        vw[i+a1.byteLength] = vw2[i];
    }
    return buffer;
}
function mk_hdr(type,flag)
{
    var tmp,length=0;
    var buffer = new ArrayBuffer(13);

    tmp = new DataView(buffer, length);
    var t = MAGIC;
    tmp.setUint16(0,t,true);//magic
    length += 2;

    tmp = new DataView(buffer, length);
    tmp.setUint8(0,type,true);  //type
    length += 1;

    tmp = new DataView(buffer, length);
    tmp.setUint8(0,0,true);     //subtype
    length += 1;
    
    tmp = new DataView(buffer, length);
    tmp.setUint8(0,0,true);     //nack
    length += 1;
    
    tmp = new DataView(buffer, length);
    tmp.setUint32(0,flag,true);     //flag
    length += 4;
    
    tmp = new DataView(buffer, length);
    tmp.setUint32(0,0,true);    //dlen
    length += 4;
    
    return buffer;
}
function pkt_to_bin(type,subtype,js)
{
    var tmp,tmp2,length=0;
    var buffer = new ArrayBuffer(13);

    tmp = new DataView(buffer, length);
    var t = MAGIC;
    tmp.setUint16(0,t,true);//magic
    length += 2;

    tmp = new DataView(buffer, length);
    tmp.setUint8(0,type,true);  //type
    length += 1;

    tmp = new DataView(buffer, length);
    tmp.setUint8(0,subtype,true);     //subtype
    length += 1;
    
    tmp = new DataView(buffer, length);
    tmp.setUint8(0,0,true);     //nack
    length += 1;
    
    tmp = new DataView(buffer, length);
    tmp.setUint32(0,0,true);     //flag
    length += 4;
    
    tmp = new DataView(buffer, length);
    tmp.setUint32(0,js.len,true);    //dlen
    length += 4;
    
    switch(type){
        case PKT_TYPE.PKT_TYPE_POWER_CH:
            tmp2 = new powerc_to_bin(js);
            break;

        case PKT_TYPE.PKT_TYPE_POWER_TOTAL:
            tmp2 = BIN.powert.j2b(js);
            break;
           
       case PKT_TYPE.PKT_TYPE_ALARM:
            tmp2 = BIN.alarm.j2b(js);
            break;
            
       default:
       return tmp2;
    }
    return array_cat(buffer,tmp2);
}
function bin_to_pkt(bin)
{
    var hdr = new bin_to_hdr(bin);
    
    var data = bin.slice(hdr.len);
    if(data.byteLength>0) {
        switch(hdr.type) {
            case PKT_TYPE.PKT_TYPE_POWER_CH:
                hdr.powerc = new bin_to_powerc(data);
                break;

            case PKT_TYPE.PKT_TYPE_POWER_TOTAL:
                hdr.powert = BIN.powert.b2j(data);
                break;
               
           case PKT_TYPE.PKT_TYPE_ALARM:
                hdr.alarmd = BIN.alarmd.b2j(data);
                break;
            
            default :
                console.log("wrong hdr type: "+hdr.type);
        }
    }
    return hdr;
}

///////////////////////////////////////////////////
function bin_to_hdr(bin) {
    var tmp, length=0;

    tmp = new DataView(bin, length);
    this.magic = tmp.getUint16(0,true);
    length += 2;

    tmp = new DataView(bin, length);
    this.type = tmp.getUint8(0,true);
    length += 1;
    
    tmp = new DataView(bin, length);
    this.subtype = tmp.getUint8(0,true);
    length += 1;

    tmp = new DataView(bin, length);
    this.nack = tmp.getUint8(0,true);
    length += 1;
    
    tmp = new DataView(bin, length);
    this.flag = tmp.getUint8(0,true);
    length += 4;

    tmp = new DataView(bin, length);
    this.dlen = tmp.getUint32(0,true);
    length += 4;

    this.len = length;
}
function bin_to_info(bin) {
    var tmp, length=0;

    this.name = array_to_string(bin.slice(0,32));
    length += 32;

    tmp = new DataView(bin, length);
    this.type = tmp.getUint8(0,true);
    length += 1;

    tmp = new DataView(bin, length);
    this.addr = tmp.getUint8(0,true);
    length += 1;

    tmp = new DataView(bin, length);
    this.ch = tmp.getUint8(0,true);
    length += 1;

    tmp = new DataView(bin, length);
    this.sch = tmp.getUint8(0,true);
    length += 1;
    
    tmp = new DataView(bin, length);
    this.ph_id = tmp.getUint8(0,true);
    length += 1;
    
    tmp = new DataView(bin, length);
    this.ph_val = tmp.getUint8(0,true);
    length += 1;
    
    tmp = new DataView(bin, length);
    this.start_delay = tmp.getUint32(0,true);
    length += 4;
    
    tmp = new DataView(bin, length);
    this.stop_delay = tmp.getUint32(0,true);
    length += 4;

    this.len = length;
}
function bin_to_power(bin) {
    var tmp, length=0;

    tmp = new DataView(bin, length);
    this.voltage = tmp.getFloat32(0,true);
    length += 4;

    tmp = new DataView(bin, length);
    this.current = tmp.getFloat32(0,true);
    length += 4;

    tmp = new DataView(bin, length);
    this.power = tmp.getFloat32(0,true);
    length += 4;

    tmp = new DataView(bin, length);
    this.freq = tmp.getFloat32(0,true);
    length += 4;
    
    tmp = new DataView(bin, length);
    this.factor = tmp.getFloat32(0,true);
    length += 4;

    tmp = new DataView(bin, length);
    this.consump = tmp.getFloat32(0,true);
    length += 4;
    
    tmp = new DataView(bin, length);
    this.active = tmp.getFloat32(0,true);
    length += 4;
    
    tmp = new DataView(bin, length);
    this.reactive = tmp.getFloat32(0,true);
    length += 4;
    
    tmp = new DataView(bin, length);
    this.ph_out = tmp.getUint8(0,true);
    length += 1;

    tmp = new DataView(bin, length);
    this.status = tmp.getUint8(0,true);
    length += 1;

    tmp = new DataView(bin, length);
    this.nwire = tmp.getUint8(0,true);
    length += 1;

    this.len = length;
}
function bin_to_alarm(bin) {
    var tmp, length=0;

    tmp = new DataView(bin, length);
    this.v_upper = tmp.getUint8(0,true);
    length += 1;

    tmp = new DataView(bin, length);
    this.v_lower = tmp.getUint8(0,true);
    length += 1;

    tmp = new DataView(bin, length);
    this.c_upper = tmp.getUint8(0,true);
    length += 1;

    tmp = new DataView(bin, length);
    this.p_upper = tmp.getUint8(0,true);
    length += 1;
    
    tmp = new DataView(bin, length);
    this.w_upper = tmp.getUint8(0,true);
    length += 1;
    
    tmp = new DataView(bin, length);
    this.ph_loss = tmp.getUint8(0,true);
    length += 1;

    this.len = length;
}
function bin_to_thrval(bin) {
    var tmp, length=0;
    
    tmp = new DataView(bin, length);
    this.en = tmp.getUint8(0,true);
    length += 1;

    tmp = new DataView(bin, length);
    this.val = tmp.getFloat32(0,true);
    length += 4;

    tmp = new DataView(bin, length);
    this.act = tmp.getUint8(0,true);
    length += 1;

    this.act_para = [];
    tmp = new DataView(bin, length);
    for(var i=0; i<14; i++) {
        this.act_para[i] = tmp.getUint8(i,true);
    }
    length += 14;

    this.len = length;
}
function bin_to_thr(bin) {
    var tmp, length=0;
    
    this.v_upper = new bin_to_thrval(bin.slice(length));
    length += this.v_upper.len;
    
    this.v_lower = new bin_to_thrval(bin.slice(length));
    length += this.v_lower.len;
    
    this.c_upper = new bin_to_thrval(bin.slice(length));
    length += this.c_upper.len;
    
    this.p_upper = new bin_to_thrval(bin.slice(length));
    length += this.p_upper.len;
    
    this.w_upper = new bin_to_thrval(bin.slice(length));
    length += this.w_upper.len;

    this.len = length;
}
function bin_to_powerc(bin) {
    var tmp, bin2, length=0;

    this.info = new bin_to_info(bin);
    length += this.info.len;
    
    this.power = [];
    for(var i=0; i<3; i++) {
        this.power[i] = new bin_to_power(bin.slice(length));
        length += this.power[i].len;
    }
    
    this.thr = new bin_to_thr(bin.slice(length));
    length += this.thr.len;
    
    this.alarm = new bin_to_alarm(bin.slice(length));
    length += this.alarm.len;
    
    tmp = new DataView(bin, length);
    this.time = tmp.getUint32(0,true);
    length += 4;
    
    tmp = new DataView(bin, length);
    this.pbrd = tmp.getUint32(0,true);
    length += 4;

    this.len = length;
}
function bin_to_total(bin) {
    var tmp, length=0;

    tmp = new DataView(bin, length);
    this.voltage = tmp.getFloat32 (0,true);
    length += 4;

    tmp = new DataView(bin, length);
    this.current = tmp.getFloat32(0,true);
    length += 4;

    tmp = new DataView(bin, length);
    this.power = tmp.getFloat32(0,true);
    length += 4;

    tmp = new DataView(bin, length);
    this.freq = tmp.getFloat32(0,true);
    length += 4;
    
    tmp = new DataView(bin, length);
    this.factor = tmp.getFloat32(0,true);
    length += 4;
    
    tmp = new DataView(bin, length);
    this.consump = tmp.getFloat32(0,true);
    length += 4;

    tmp = new DataView(bin, length);
    this.active = tmp.getFloat32(0,true);
    length += 4;

    tmp = new DataView(bin, length);
    this.reactive = tmp.getFloat32(0,true);
    length += 4;
    
    this.len = length;
}
function bin_to_powert(bin) {
    var tmp, length=0;

    tmp = new DataView(bin, length);
    this.type = tmp.getUint8(0,true);
    length += 1;

    this.total = [];
    for(var i=0; i<3; i++) {
        this.total[i] = new bin_to_total(bin.slice(length));
        length += this.total[i].len;
    }
    
    this.len = length;
}
function bin_to_alarmd(bin) {
    var tmp, length=0;
    
    tmp = new DataView(bin, length);
    this.ch = tmp.getUint8(0,true);
    length += 1;
    
    this.alarm = new bin_to_alarm(bin.slice(length));
    length += this.alarm.len;
    
    tmp = new DataView(bin, length);
    this.time = tmp.getUint32(0,true);
    length += 4;

    this.len = length;
}
///////////////////////////////////////////////////
function hdr_to_bin(js) {
    var tmp, length=0;
    var buffer = new ArrayBuffer(js.len);

    tmp = new DataView(buffer, length);
    tmp.setUint16(0,js.magic,true);
    length += 2;

    tmp = new DataView(buffer, length);
    tmp.setUint8(0,js.type,true);
    length += 1;
    
    tmp = new DataView(buffer, length);
    tmp.setUint8(0,js.subtype,true);
    length += 1;

    tmp = new DataView(buffer, length);
    tmp.setUint8(0,js.nack,true);
    length += 1;
    
    tmp = new DataView(buffer, length);
    tmp.setUint32(0,js.flag,true);
    length += 4;
    
    tmp = new DataView(buffer, length);
    tmp.setUint32(0,js.dlen,true);
    length += 4;

    return buffer;
}
function info_to_bin(js) {
    var tmp, length=0;
    var name = string_to_array(js.name, 32);
    var buffer = new ArrayBuffer(js.len-name.byteLength);

    tmp = new DataView(buffer, length);
    tmp.setUint8(0,js.type,true);
    length += 1;

    tmp = new DataView(buffer, length);
    tmp.setUint8(0,js.addr,true);
    length += 1;
    
    tmp = new DataView(buffer, length);
    tmp.setUint8(0,js.ch,true);
    length += 1;
    
    tmp = new DataView(buffer, length);
    tmp.setUint8(0,js.sch,true);
    length += 1;

    tmp = new DataView(buffer, length);
    tmp.setUint8(0,js.ph_id,true);
    length += 1;
    
    tmp = new DataView(buffer, length);
    tmp.setUint8(0,js.ph_val,true);
    length += 1;
    
    tmp = new DataView(buffer, length);
    tmp.setUint32(0,js.start_delay,true);
    length += 4;
    
    tmp = new DataView(buffer, length);
    tmp.setUint32(0,js.stop_delay,true);
    length += 4;

    return array_cat(name,buffer);
}
function power_to_bin(js) {
    var tmp, length=0;
    var buffer = new ArrayBuffer(js.len);

    tmp = new DataView(buffer, length);
    tmp.setFloat32(0,js.voltage,true);
    length += 4;

    tmp = new DataView(buffer, length);
    tmp.setFloat32(0,js.current,true);
    length += 4;

    tmp = new DataView(buffer, length);
    tmp.setFloat32(0,js.power,true);
    length += 4;

    tmp = new DataView(buffer, length);
    tmp.setFloat32(0,js.freq,true);
    length += 4;
    
    tmp = new DataView(buffer, length);
    tmp.setFloat32(0,js.factor,true);
    length += 4;
    
    tmp = new DataView(buffer, length);
    tmp.setFloat32(0,js.consump,true);
    length += 4;

    tmp = new DataView(buffer, length);
    tmp.setFloat32(0,js.active,true);
    length += 4;
    
    tmp = new DataView(buffer, length);
    tmp.setFloat32(0,js.reactive,true);
    length += 4;
    
    tmp = new DataView(buffer, length);
    tmp.setUint8(0,js.ph_put,true);
    length += 1;

    tmp = new DataView(buffer, length);
    tmp.setUint8(0,js.status,true);
    length += 1;

    tmp = new DataView(buffer, length);
    tmp.setUint8(0,js.nwire,true);
    length += 1;

    return buffer;
}
function alarm_to_bin(js) {
    var tmp, length=0;
    var buffer = new ArrayBuffer(js.len);

    tmp = new DataView(buffer, length);
    tmp.setUint8(0,js.v_upper,true);
    length += 1;

    tmp = new DataView(buffer, length);
    tmp.setUint8(0,js.v_lower,true);
    length += 1;

    tmp = new DataView(buffer, length);
    tmp.setUint8(0,js.c_upper,true);
    length += 1;

    tmp = new DataView(buffer, length);
    tmp.setUint8(0,js.p_upper,true);
    length += 1;
    
    tmp = new DataView(buffer, length);
    tmp.setUint8(0,js.w_upper,true);
    length += 1;
    
    tmp = new DataView(buffer, length);
    tmp.setUint8(0,js.ph_loss,true);
    length += 1;

    return buffer;
}
function thrval_to_js(js) {
    var tmp, length=0;
    var buffer = new ArrayBuffer(js.len);
    
    tmp = new DataView(buffer, length);
    tmp.setUint8(0,js.en,true);
    length += 1;

    tmp = new DataView(buffer, length);
    tmp.setFloat32(0,js.val,true);
    length += 4;

    tmp = new DataView(buffer, length);
    tmp.getUint8(0,js.act,true);
    length += 1;

    tmp = new DataView(buffer, length);
    for(var i=0; i<14; i++) {
        tmp.setUint8(i,js.act_para[i],true);
    }
    length += 14;

    return buffer;
}
function thr_to_bin(js) {
    var bin,tmp, length=0;
    
    bin = thrval_to_js(js.v_upper);
    tmp = thrval_to_js(js.v_lower);
    
    bin = array_cat(bin, tmp);
    tmp = thrval_to_js(js.c_upper);
    bin = array_cat(bin, tmp);
    
    tmp = thrval_to_js(js.p_upper);
    bin = array_cat(bin, tmp);
    
    tmp = thrval_to_js(js.w_upper);
    bin = array_cat(bin, tmp);

    return bin;
}
function powerc_to_bin(js) {
    var bin,tmp, length=0;
    
    bin = new info_to_bin(js.info);
    
    for(var i=0; i<3; i++) {
        tmp = new power_to_bin(js.power[i]);
        bin = array_cat(bin, tmp);
    }
    
    tmp = new thr_to_bin(js.thr);
    bin = array_cat(bin, tmp);

    tmp = new alarm_to_bin(js.alarm);
    bin = array_cat(bin, tmp);
    
    var buf = new ArrayBuffer(8);
    tmp = new DataView(buf, 0);
    tmp.setUint32(0,js.time,true);
    tmp.setUint32(4,js.pbrd,true);
    
    bin = array_cat(bin, buf);

    return bin;
}
function total_to_bin(js) {
    var tmp, length=0;
    var buffer = new ArrayBuffer(js.len);

    tmp = new DataView(buffer, length);
    tmp.setFloat32(0,js.voltage,true);
    length += 4;

    tmp = new DataView(buffer, length);
    tmp.setFloat32(0,js.current,true);
    length += 4;

    tmp = new DataView(buffer, length);
    tmp.setFloat32(0,js.power,true);
    length += 4;

    tmp = new DataView(buffer, length);
    tmp.setFloat32(0,js.freq,true);
    length += 4;
    
    tmp = new DataView(buffer, length);
    tmp.setFloat32(0,js.factor,true);
    length += 4;
    
    tmp = new DataView(buffer, length);
    tmp.setFloat32(0,js.consump,true);
    length += 4;
    
    tmp = new DataView(buffer, length);
    tmp.setFloat32(0,js.factor,true);
    length += 4;
    
    tmp = new DataView(buffer, length);
    tmp.setFloat32(0,js.active,true);
    length += 4;
    
    tmp = new DataView(buffer, length);
    tmp.setFloat32(0,js.reactive,true);
    length += 4;

    return buffer;
}
function powert_to_bin(js) {
    var tmp,bin2,length=0;
    var bin = new ArrayBuffer(1);

    tmp = new DataView(bin, length);
    tmp.setUint8(0,js.type,true);
    length += 4;

    for(var i=0; i<3; i++) {
        bin2 = total_to_bin(js.total[i]);
        bin = array_cat(bin, bin2);
    }

    return bin;
}
function alarmd_to_bin(js) {
    var tmp, length=0;
    var bin,buffer = new ArrayBuffer(1);

    tmp = new DataView(buffer, 0);
    tmp.setUint8(0,js.ch,true);
    
    var alarm = alarm_to_bin(js.alarm);
    bin = array_cat(buffer, alarm);

    buffer = new ArrayBuffer(4);
    tmp = new DataView(buffer, 0);
    tmp.setUint32(0,js.time,true);

    return array_cat(bin, buffer);
}
//////////////////////////////////////////////////////////////

var XXX ={};
XXX.hdr = function() {
    this.j2b = function (js) {
        var tmp;

        switch(js.type){
            case PKT_TYPE.PKT_TYPE_POWER_CH:
                tmp = BIN.powerc.j2b(js.powerc);
                break;

            case PKT_TYPE.PKT_TYPE_POWER_TOTAL:
                tmp = BIN.powert.j2b(js.powert);
                break;
               
           case PKT_TYPE.PKT_TYPE_ALARM:
                tmp = BIN.alarm.j2b(js.alarmd);
                break;
                
           default:
           return tmp;
        }
        js.dlen = tmp.byteLength;
        var hdr = new hdr_to_bin(js);
        return array_cat(hdr,tmp);
    };

    this.b2j = function (bin) {
        var tmp;
        var hdr = new bin_to_hdr(bin);
        
        if(hdr.nack == 1){
            //tmp = myBinary.ack.bin2js(bin,this.hdr.len,true);
            //myLog('log',tmp);
            //var data = tmp.data;
        }
        
        var data = bin.slice(hdr.len);
        if(data.byteLength>0 && hdr.dlen==data.byteLength) {
            switch(hdr.type) {
                case PKT_TYPE.PKT_TYPE_POWER_CH:
                    hdr.powerc = BIN.powerc.b2j(data);
                    break;

                case PKT_TYPE.PKT_TYPE_POWER_TOTAL:
                    hdr.powert = BIN.powert.b2j(data);
                    break;
                   
               case PKT_TYPE.PKT_TYPE_ALARM:
                    hdr.alarmd = BIN.alarmd.b2j(data);
                    break;
                
                default :
                    console.log("wrong hdr type: "+hdr.type);
            }
        }
        return hdr;
    }
};
XXX.paras=function() {
    this.j2b = function (js) {
        
    }
    
    this.b2j = function (bin) {
        
    }
};
XXX.powerc=function() {
    this.j2b = function (js) {
        return new powerc_to_bin(js);
    }

    this.b2j = function (bin) {
        var tmp=[],length=0;
        for(var i=0;; i++) {
            tmp[i] =  new bin_to_powerc(bin.slice(length));
            length += tmp[i].len;
            if(length >= bin.byteLength) {
                break;
            }
        }
        return tmp;
    }
};
XXX.powert=function() {
    this.j2b = function (js) {
        return new powert_to_bin(js);
    }

    this.b2j = function (bin) {
        return new bin_to_powert(bin);
    }
};
XXX.alarmd=function() {
    this.j2b = function (js) {
        return new alarmd_to_bin(js);
    }

    this.b2j = function (bin) {
        return new bin_to_alarmd(bin);
    }
};


var BIN=new function() {
    this.hdr = new XXX.hdr();
    this.paras = new XXX.paras();
    this.powerc = new XXX.powerc();
    this.powert = new XXX.powert();
    this.alarmd = new XXX.alarmd();
}();


//////////////////////////////////////////
function LOG(){
    var data = [];
    for(var i= 1,len=arguments.length;i<len;i++){
        data.push(arguments[i])
    }
    console.log(data);

}


function WS(url,fn) {
    this.url = url;
    this.name = 'myWebs';
    this.open = _open;
    this.reopen = _reopen;
    this.close = _close;
    this.send = _send;
    this.state = _state;
    this.setcb = _setcb;
    this.closeCount = 0;
    this.maxConnect = 100;
    var his = this;
    this.open();
    function _open() {
        console.log("____url: ", his.url);
        his.ws = new WebSocket(his.url);
        his.ws.binaryType = 'arraybuffer';
        his.ws.onopen = _onopen;
        his.ws.onclose = _onclose;
        his.ws.onmessage = _onmsg;
        his.ws.onerror = _onerror;
    }

    function _reopen() {
        _close();
        _open(his.url);
    }

    function _close() {
        his.ws.close();
    }

    function _send(msg) {
        if (his.ws.readyState != WebSocket.OPEN)
            return;
        his.ws.send(msg);
    }

    function _state() {
        return his.ws.readyState;
    }

    function _setcb(tp, f) {
        switch (tp) {
            case "open":
                his.ws.onopen = f;
                break;

            case "close":
                his.ws.onclose = f;
                break;

            case "msg":
                his.ws.onmessage = f;
                break;

            case "err":
                his.ws.onerror = f;
                break;
        }
    }

    function loop_send() {
        console.log("PKT_TYPE_POWER_CH request");
        _send(mk_hdr(PKT_TYPE.PKT_TYPE_POWER_CH));
        setTimeout(loop_send, 2000);
    }


    function _onopen(evt) {
        his.closeCount = 0;
        console.log("___ ws.onopen");
        setTimeout(loop_send, 2000);
    }

    function _onclose(evt) {
        LOG("ws.onclose");
        setTimeout(_reopen, 3000);
        his.closeCount += 1;
    }

    function _onmsg(evt) {
        console.log("___ ws.onmsg");
        if (evt.data instanceof ArrayBuffer) {
            fn(evt.data);
        }
    }

    function _onerror(evt) {
        console.log("___ ws.onerror");
        //write_scr('<span style="color: red;">ERROR:</span> '+ evt.data);
    }

}