In our current implementation, `NS_HTTP_REFRESH_DNS` [1] is set to the http channel that connectes to the DoH server. This causes the URL is resolved every time without using the DNS cache. [1] https://searchfox.org/mozilla-central/rev/96f1457323cc598a36f5701f8e67aedaf97acfcf/netwerk/protocol/http/nsHttpChannel.cpp#6863
Bug 1618173 Comment 0 Edit History
Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.
In our current implementation, `NS_HTTP_REFRESH_DNS` [1] is set to the http channel that connects to the DoH server. This causes the URL is resolved every time without using the DNS cache. [1] https://searchfox.org/mozilla-central/rev/96f1457323cc598a36f5701f8e67aedaf97acfcf/netwerk/protocol/http/nsHttpChannel.cpp#6863