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Code Issues Releases Activity

Server: Retry NTP request up to three times when it fails

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This commit is contained in:
Laurent Cozic 2021-11-28 16:58:39 +00:00
parent 920847245f
commit 7eb1d89d66
1 changed files with 18 additions and 5 deletions
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23
packages/lib/ntp.ts
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@ -1,4 +1,5 @@
import shim from './shim'; import shim from './shim';
import time from './time';
const ntpClient_ = require('./vendor/ntp-client'); const ntpClient_ = require('./vendor/ntp-client');
const server = { const server = {
@ -25,12 +26,24 @@ export async function getNetworkTime(): Promise<Date> {
} }
export async function getDeviceTimeDrift(): Promise<number> { export async function getDeviceTimeDrift(): Promise<number> {
const maxTries = 3;
let tryCount = 0;
let ntpTime: Date = null; let ntpTime: Date = null;
try {
ntpTime = await getNetworkTime(); while (true) {
} catch (error) { tryCount++;
error.message = `Cannot retrieve the network time: ${error.message}`; try {
throw error; ntpTime = await getNetworkTime();
break;
} catch (error) {
if (tryCount >= maxTries) {
error.message = `Cannot retrieve the network time: ${error.message}`;
throw error;
} else {
await time.msleep(tryCount * 1000);
}
}
} }
return ntpTime.getTime() - Date.now(); return ntpTime.getTime() - Date.now();