Why when i try to get Buffer of downloaded file (client.torrents[0].files[0].getBuffer();i get error (TypeError: can't convert undefined to object)? #1247

VladChekunov · 2017-12-18T21:47:34Z

What version of WebTorrent?
Last
What browser and version? (if using WebTorrent in the browser)
Last version of Firefox, also Firefox ESR 48.
What did you expect to happen?
Get file data by buffer of bytes.
What actually happened?
i get error (TypeError: can't convert undefined to object).

sevchan · 2017-12-19T16:48:58Z

I use this code for testing and too get this error:

<html>
<head>
<meta charset="utf-8">
<script src="https://cdn.jsdelivr.net/webtorrent/latest/webtorrent.min.js"></script>
<script>
var client = new WebTorrent();

function sendHello(){
	parts = [new Blob(["Hello Worldddddd"], {type: 'text/plain'})];
	var file = new File(parts, 'hello2017worldtorrent.txt', {
	    lastModified: new Date(0),
	    type: "text/plain"
	});
	client.seed(file, function (torrent) {
		alert(torrent.magnetURI);//I save this value from alert and paste it to torrentId in getHello() function.
	});
}

function getHello(){
	var torrentId = 'magnet:?xt=urn:btih:3a0dbec572713c018afad430f7ec199966539384&dn=hello2017worldtorrent.txt&tr=udp%3A%2F%2Fexplodie.org%3A6969&tr=udp%3A%2F%2Ftracker.coppersurfer.tk%3A6969&tr=udp%3A%2F%2Ftracker.empire-js.us%3A1337&tr=udp%3A%2F%2Ftracker.leechers-paradise.org%3A6969&tr=udp%3A%2F%2Ftracker.opentrackr.org%3A1337&tr=wss%3A%2F%2Ftracker.btorrent.xyz&tr=wss%3A%2F%2Ftracker.fastcast.nz&tr=wss%3A%2F%2Ftracker.openwebtorrent.com';
	client.add(torrentId, function (torrent) {
	  var file = torrent.files.find(function (file) {
	    console.log(file.getBuffer());//Here i get error TypeError: can't convert undefined to object.
	  })
	})
}

</script>
</head>
<body>
<a  onclick="sendHello();" href="javascript://">Send</a>
<a  onclick="getHello();" href="javascript://">Get</a>
</div>
</body>
</html>

DiegoRBaquero · 2017-12-19T21:11:23Z

Could you please post a full stack trace?

sevchan · 2017-12-22T15:24:10Z

Could you please post a full stack trace?

@DiegoRBaquero, how to do it?

feross · 2018-05-04T00:16:38Z

@sevchan I found the issue in your code. You're calling file.getBuffer() without a callback. The docs say the prototype is file.getBuffer(function callback (err, buffer) {}).

stale bot added the stale label May 3, 2018

feross closed this May 4, 2018

webtorrent deleted a comment from stale bot May 4, 2018

lock bot locked as resolved and limited conversation to collaborators Jan 18, 2019

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Why when i try to get Buffer of downloaded file (client.torrents[0].files[0].getBuffer();i get error (TypeError: can't convert undefined to object)? #1247

Why when i try to get Buffer of downloaded file (client.torrents[0].files[0].getBuffer();i get error (TypeError: can't convert undefined to object)? #1247

VladChekunov commented Dec 18, 2017

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sevchan commented Dec 19, 2017 •

edited

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DiegoRBaquero commented Dec 19, 2017

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sevchan commented Dec 22, 2017 •

edited

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feross commented May 4, 2018

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Why when i try to get Buffer of downloaded file (client.torrents[0].files[0].getBuffer();i get error (TypeError: can't convert undefined to object)? #1247

Why when i try to get Buffer of downloaded file (client.torrents[0].files[0].getBuffer();i get error (TypeError: can't convert undefined to object)? #1247

Comments

VladChekunov commented Dec 18, 2017

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sevchan commented Dec 19, 2017 • edited

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DiegoRBaquero commented Dec 19, 2017

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sevchan commented Dec 22, 2017 • edited

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feross commented May 4, 2018

sevchan commented Dec 19, 2017 •

edited

sevchan commented Dec 22, 2017 •

edited