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assets/js/http_transport.mjs
"use strict";
export default class HttpTransport {
// 30 seconds
static PING_INTERVAL = 30_000;
static PING_PATH = "/hologram/ping";
static pingTimer = null;
static isRunning() {
return $.pingTimer !== null;
}
static maybeStopPing() {
if ($.isRunning()) {
clearInterval($.pingTimer);
$.pingTimer = null;
}
}
static ping() {
fetch($.PING_PATH, {
method: "HEAD",
keepalive: true,
}).catch((error) => {
// Silently handle ping errors to avoid breaking the timer loop
console.debug("Ping request failed:", error);
});
}
static restartPing(sendImmediatePing) {
$.maybeStopPing();
$.startPing(sendImmediatePing);
}
static startPing(sendImmediatePing) {
if (sendImmediatePing) {
$.ping();
}
$.pingTimer = setInterval(() => {
$.ping();
}, $.PING_INTERVAL);
}
}
const $ = HttpTransport;