Path: csiph.com!weretis.net!feeder8.news.weretis.net!news.mb-net.net!open-news-network.org!.POSTED.50.226.197.178.dynamic.wless.zhbmb00p-cgnat.res.cust.swisscom.ch!not-for-mail
From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Newsgroups: comp.lang.javascript
Subject: Re: blob from createobjecturl
Date: Sun, 24 Jan 2021 05:01:46 +0100
Organization: PointedEars Software (PES)
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Message-ID: <4594399.GXAFRqVoOG@PointedEars.de>
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Reply-To: Thomas 'PointedEars' Lahn <cljs@PointedEars.de>
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Xref: csiph.com comp.lang.javascript:39385

Andrew Poulos wrote:

> A web page I'm working on create a number of images using
> 
> fetch(url)
>    .then(response => {
>      return response.blob();
>    })
>    .then(b => {
>      myImage.src = URL.createObjectURL(b);
>    })
>    .catch(err => console.log(err));
> 
> The user can create/destroy as many images as they want.
> 
> If at some point the user wants to save an image, the page needs to send
> it to the server. Is it ok to send myImage.src to a PHP server and the
> server can correctly handle it or do I need to send the blob that was
> used to create the object URL?

Can the user modify the image?  If not, and the server where the image is 
stored is the same from which it was obtained, then simply PUT or POST the 
original URI and let the server map that to the local filesystem.  This is 
much less expensive than PUTting/POSTing the BLOB.

Otherwise PUT or POST the BLOB and let the server handle that.

-- 
PointedEars
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