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[HTML5] Disable body_size in fetch.

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We were using `Content-Length` from the server when `Content-Encoding`
was not set (i.e. response was not compressed).

Sadly, in CORS requests accessing headers is restricted, and while
`Content-Length` is enabled by default, `Content-Encoding` is not.

This results in the impossibility of knowing if the content was
compressed, unless the server explicitly enabled the encoding header
via `Access-Control-Expose-Headers`.

To keep maximum compatibility we must disable `body_size` completely.

(cherry picked from commit 737ed0f66e)
This commit is contained in:
Fabio Alessandrelli 2021-04-03 14:51:54 +02:00 • committed by Rémi Verschelde
parent 1cd13d22c2
commit f90b24a805
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GPG key ID: C3336907360768E1
2 changed files with 1 additions and 29 deletions
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13
platform/javascript/js/libs/library_godot_fetch.js
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@ -49,25 +49,14 @@ const GodotFetch = {
if (!obj) {
return;
}
let size = -1;
let compressed = false;
let chunked = false;
response.headers.forEach(function (value, header) {
const v = value.toLowerCase().trim();
const h = header.toLowerCase().trim();
if (h === 'content-encoding') {
compressed = true;
size = -1;
} else if (h === 'content-length') {
const len = Number.parseInt(value, 10);
if (!Number.isNaN(len) && !compressed) {
size = len;
}
} else if (h === 'transfer-encoding' && v === 'chunked') {
if (h === 'transfer-encoding' && v === 'chunked') {
chunked = true;
}
});
obj.bodySize = size;
obj.status = response.status;
obj.response = response;
obj.reader = response.body.getReader();