Re: WebTransport crashes the tab

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Yutaka Hirano

Nov 2, 2021, 10:16:57 AM11/2/21
to guest271314, web-transport-dev
Can you navigate to chrome://crashes, find the appropriate entry and file a bug with "Provide additional details"?

On Tue, Nov 2, 2021 at 2:18 PM guest271314 <> wrote:
In I described trying to stream STDOUT from Popen().

Using updated from GoogleChrome/samples yields the same result as before the update, no data streamed to the browser, additionally the tab consistently crashes now.

At one time I was able to stream data using QuicTransport. I am not sure what has happened since then. Still not able to stream data using WebTransport. 1 and 2 byte tests at WPT are insufficient.

To consistently crash the tab on Chromium 97 run the following code, enter any value in the textarea, select create bidirectional stream, then press send data.

python3 certificate.pem certificate.key

The critical part of the code that I changed is streaming random data instead of media to demonstrate 100% crash rate.

if isinstance(event, WebTransportStreamDataReceived):
            if != b'':
                # stream random data instead of media 
                for c in iter(lambda: ''.join(choice(digits) for i in range(512)).encode(), b''):
                    if c is not None:
                            event.stream_id, c, end_stream=False)                        


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Nov 3, 2021, 6:14:32 AM11/3/21
to Yutaka Hirano, web-transport-dev
Chromium team banned me from


Nov 3, 2021, 10:57:27 AM11/3/21
to web-transport-dev, guest271314, web-transport-dev,
Steps to reproduce: Select create bidirectional stream, inout a non-space characgter into textarea, send. See also
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