A function to obtain the time of the remote NTP server, which is more common in high-frequency trading or calculation delays
function ntp_client() {
// compatible with backtesting
if (IsVirtual()) {
return new Date().getTime()
}
let client = Dial("udp://time.windows.com:123")
client.write('\x1b' + Array(47).fill('\0').join(''))
let buf = client.read()
client.close()
if (buf && buf.byteLength == 48) {
let dataView = new DataView(buf)
return (dataView.getUint32(40, false) - 2208988800) * 1000 + Math.floor((dataView.getUint32(44, false) / 4294967295) * 1000)
}
return null
}
// compare local time and binance delay
function localDelayBinance() {
let delay = 0
for (let i = 0; i < 6; i++) {
let ts = 0
// 1 - 4 ignore first time
if (i> 0 && i < 5) {
ts = new Date().getTime()
}
let res = HttpQuery("https://fapi.binance.com/fapi/v1/time")
let now = new Date().getTime()
if (ts > 0) {
delay += now - ts
}
if (i == 5) {
return now - JSON.parse(res).serverTime + Math.ceil(delay / 2 / 4)
}
}
}
function main() {
let timestamp = ntp_client()
Log(_D(timestamp) + '.' + timestamp%1000, timestamp)
}