Bug 1670278 Comment 5 Edit History

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Original comment by
on 
If possible, making `cookieStoreId`  writeable is an option.

The option would be of great benefit when an extension has to make an HTTP request from background scripts while maintaining contextual identity (e.g. userscript managers etc)


```js
fetch('https://example.com/', {
  method: 'GET',
  cookieStoreId: tab.cookieStoreId
})


const xhr = new XMLHttpRequest();
xhr.open('GET', 'http://example.com/', true);
xhr.cookieStoreId = tab.cookieStoreId;
xhr.send(null);


browser.downloads.download({
  url,
  filename,
  saveAs,
  conflictAction: 'uniquify',
  cookieStoreId: tab.cookieStoreId
});
```
Revision 1 by
on 
If possible, making `cookieStoreId`  writeable is an option.

The option would be of great benefit when an extension has to make an HTTP request from background scripts while maintaining contextual identity (e.g. userscript managers etc)


```js
fetch('https://example.com/', {
  method: 'GET',
  cookieStoreId: tab.cookieStoreId
})


const xhr = new XMLHttpRequest();
xhr.open('GET', 'http://example.com/', true);
xhr.cookieStoreId = tab.cookieStoreId;
xhr.send(null);


browser.downloads.download({
  url,
  filename,
  saveAs,
  conflictAction: 'uniquify',
  cookieStoreId: tab.cookieStoreId
});
```

Note on `downloads.download`
It is possible to set `cookieStoreId: 'firefox-container-1'` but not `cookieStoreId: 'firefox-private'`
> Error: Illegal to set private cookieStoreId in a non-private window
Revision 2 by
on 
If possible, making `cookieStoreId`  writeable is an option.

The option would be of great benefit when an extension has to make an HTTP request from background scripts while maintaining contextual identity (e.g. userscript managers etc)


```js
fetch('https://example.com/', {
  method: 'GET',
  cookieStoreId: tab.cookieStoreId
})


const xhr = new XMLHttpRequest();
xhr.open('GET', 'http://example.com/', true);
xhr.cookieStoreId = tab.cookieStoreId;
xhr.send(null);
});
```

Note on `downloads.download`
It is already possible to set `cookieStoreId: 'firefox-container-1'` but not `cookieStoreId: 'firefox-private'`
> Error: Illegal to set private cookieStoreId in a non-private window

```js
browser.downloads.download({
  url,
  filename,
  saveAs,
  conflictAction: 'uniquify',
  cookieStoreId: tab.cookieStoreId !== 'firefox-private' ? tab.cookieStoreId : 'firefox-default'
  incognito: tab.incognito
});
```
Revision 3 by
on 
If possible, making `cookieStoreId`  writeable is an option.

The option would be of great benefit when an extension has to make an HTTP request from background scripts while maintaining contextual identity (e.g. userscript managers etc)


```js
fetch('https://example.com/', {
  method: 'GET',
  cookieStoreId: tab.cookieStoreId
})


const xhr = new XMLHttpRequest();
xhr.open('GET', 'http://example.com/', true);
xhr.cookieStoreId = tab.cookieStoreId;
xhr.send(null);
});
```

Note on `downloads.download`
It is already possible to set `cookieStoreId: 'firefox-container-1'` but not `cookieStoreId: 'firefox-private'`
> Error: Illegal to set private cookieStoreId in a non-private window

```js
browser.downloads.download({
  url,
  filename,
  saveAs,
  conflictAction: 'uniquify',
  cookieStoreId: tab.cookieStoreId !== 'firefox-private' ? tab.cookieStoreId : 'firefox-default',
  incognito: tab.incognito
});
```

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