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jiti-meet
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feat(index.html): reload when resource fails to load 

The page will be reloaded if any of the mandatory scripts/resources
fails to load. The reload will be delayed with exponential backoff
starting from 2 seconds. The retry attempt counter is passed as
'rCounter' query attribute.
This commit is contained in:
paweldomas 2016-12-12 15:52:01 -06:00
parent a09b8ce56e
commit a4dcf5f8df
1 changed files with 35 additions and 1 deletions
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34
index.html
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@ -31,6 +31,40 @@
document.body.innerHTML
= "The application failed to load, missing file: "
+ fileRef;
// The whole complex part below implements page reloads with
// "exponential backoff". The retry attempt is passes as
// "rCounter" query parameter
var href = window.location.href;
var retryMatch = href.match(/.+(\?|&)rCounter=(\d+)/);
var retryCountStr = retryMatch ? retryMatch[2] : "0";
var retryCount = Number.parseInt(retryCountStr);
if (retryMatch == null) {
var separator = href.indexOf("?") === -1 ? "?" : "&";
var hashIdx = href.indexOf("#");
if (hashIdx === -1) {
href += separator + "rCounter=1";
} else {
var hashPart = href.substr(hashIdx);
href = href.substr(0, hashIdx)
+ separator + "rCounter=1" + hashPart;
}
} else {
var separator = retryMatch[1];
href = href.replace(
/(\?|&)rCounter=(\d+)/,
separator + "rCounter=" + (retryCount + 1));
}
var delay = Math.pow(2, retryCount) * 2000;
window.setTimeout(
function () { window.location.replace(href); }, delay);
};
window.removeEventListener(
'error', loadErrHandler, true /* capture phase */);