Open Bug 1969090 Opened 7 months ago Updated 4 months ago

WebTransport fails to connect over DoH to echo server

Categories

(Core :: Networking: DNS, defect, P2)

Product:
Core
Component:
Networking: DNS
Type:
defect

Tracking

()

People

(Reporter: jesup, Unassigned)

References

(Depends on 1 open bug,
URL
)

Details

(Whiteboard: [necko-triaged])

Go to the URL, hit 'Connect'. You get "Connection failed: WebTransportError: WebTransport connection rejected" if DoH is on. If it's off, it works.

Flags: needinfo?(valentin.gosu)

If I understand the problem correctly, the issue is that DoH returns IPv6 addresses first, and Webtransport doesn't retry with a different family when the first one fails.

Depends on: 1953459
Flags: needinfo?(valentin.gosu)
See Also: → 1964292
Severity: -- → S3
Priority: -- → P2
Whiteboard: [necko-triaged]

Workaround

For users landing here, if WebTransport is not working for you, and you wish to debug to see if this is your issuue:

  1. Try going to Firefox Settings, search for "doh" and either temporarily turn off DNS over HTTPS to see if this fixes it, or add an exception.
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