XMLHttpRequest upload 1G file has error

[jimtang9527]

Description

when file size is 5G, use XMLHttpRequest upload,has error.

let progressCallback = (e) => {
 let loaded = e.loaded//max size 966356656,file size 5261320910 byte
 let total = e.total//max size 966356656,file size 5261320910 byte
}
let xhr = new XMLHttpRequest()
xhr.upload.onprogress = progressCallback
let form = new FormData()
form.append('file', file)
xhr.open('POST', 'https://xxxxx', true)
xhr.send(form)

Reproduction

Solution

meybe stat file size overflow.same itinance/react-native-fs#226

Additional Information

• React Native version: 0.39.2
• Platform: [Android]
• Operating System: [MacOS]

[ericvicenti]

It looks like this issue would be resolved by handling the file upload with this new blob implementation:

#11417

If its not too much effort, would you mind trying this new code to see if it helps address your problem?

[satya164]

@ericvicenti I think not currently. We currently load the whole blob into memory and I'm not sure if we can avoid that. But want to discuss it in the PR. Would be great if we can actually avoid it

[ide]

Regarding loading the whole blob vs. not -- the spec actually allows for either behavior. The spec says it is preferable to load the blob (or come up with some other way to make it appear to be snapshotted, you could use CoW for example) but that for performance reasons it's OK to give up atomicity:

https://www.w3.org/TR/FileAPI/#file

[hramos]

Closing this issue because it has been inactive for a while. If you think it should still be opened let us know why.