Loading image from binary?

Set image from URL, set response binary, load array with binary code.

Posted this to the server using AJAX (as a Blob), and cleared the storage, refreshed (everything is cleared out including local storage).

Pulled the info back from the server and loaded into the array.

My question, how does one load the stored binary code back into the a sprite?

Use the binary data's geturl expression with the sprite load from url action.

Some folks have gotten it to work by adding

data:image/png;base64, in front of the base64 string and then loading via URL

iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg==

construct.net/en/forum/construct-3/how-do-i-8/load-base64-image-sprite-141995

I've just not been able to get it working.

Anyone have any ideas?

I can upload base64 to the server up to around 5kb of data.

Past that the upload fails.

My guess is that it has to do with Apache limiting the URL to 8k characters.

Is there way to compress this or use an alternative to base64? (if so could you point me in the direction of how to do that? I've read all of the forum comments and the manual. I was thinking I could take the base64 and apply float64(8) and unpack it. Unfortunately I couldn't figure out how to unpack it. At this point, I'm going to take a break...)

As an aside, URLencode would not work either.

Ashley

If we figure this out, I'm volunteering to do a tutorial.

I've read every post (even one that was mistakenly put in C2 forum) and tried every combination I can conceive.

Info being sent:

Use "Post binary to URL". Putting the entire base64 string in the URL will make the URL too big to request, and the binary URL is (IIRC) a blob: URL which refers to local content so cannot be accessed by a server.

You could also post a base64 string, but that's wasteful compared to just sending the raw binary.

Ashley

The buffer is 49k in length, so that's not looking at the url.

The url is there, it's your blob preview option

The float64(*) [personally I figured this should be 8, but 8 returns 0 so I used 1 and it returns what looks like the URL data in float64]

Base64 reads and hold the actual file data, unfortunately the data amount is larger than the actual file.

***The only BinaryData.Get* that seems to return a value other than the URL is Base64.***

(The best I can tell, base64 is also the only "Get" that can be stored in local storage and retrieved when the browser is close and reopened)

Just to wrap this up.

To send an image to the server using *.php via AJAX is doable.

However, your server may limit the url to a certain number of characters (usually 8190 characters, this is to slow Denial Of Service (DOS) attacks against the server per Hostgator.) see 414 error*

When retrieving data from the server, usually the url is unlimited (no need for them to worry about DOS when sending).

The suggestion has been made to use a Blob, but the best I understand it, this is only done locally and is of no help when sending data over the internet.

Using binary might reduce the url by 30%, but on a 5mb file, that is still well over the server threshold of characters and again makes the url too long to be sent.

The only solution I see it to parse the data, send multiple AJAX post and just append the cell text that holds the picture data.

Hope this information helps others.

If anyone can add information to this, or sees an error please let me know. Thank you.

I previously suggested using "Post binary to URL", which sends the data in the body of the request, not the URL. Therefore it is not affected by URL length limits.

Im looking for that answer also.

I have to send the users id so the php can recognize who is sent the picture to store to his row but i dont know how to send the BinaraData.

How does one specify where the binary data would end up (the specific cell inside the database_ using "Post binary to URL"?

The server will receive the data in the request body. It's up to your server code what it does with that.