Provides an optional resolver mechanism for Firefox that allows running
together with or instead of the native resolver.
TRR offers resolving of host names using a dedicated DNS-over-HTTPS server
(HTTPS is required, HTTP/2 is preferable).
DNS-over-HTTPS (DOH) allows DNS resolves with enhanced privacy, secure
transfers and improved performance.
To keep the failure rate at a minimum, the TRR system manages a dynamic
persistent blacklist for host names that can't be resolved with DOH but works
with the native resolver. Blacklisted entries will not be retried over DOH for
a couple of days. "localhost" and names in the ".local" TLD will not be
resolved via DOH.
TRR is preffed OFF by default and you need to set a URI for an available DOH
server to be able to use it. Since the URI for DOH is set with a name itself,
it may have to use the native resolver for bootstrapping. (Optionally, the
user can set the IP address of the DOH server in a pref to avoid the required
initial native resolve.)
When TRR starts up, it will first verify that it works by checking a
"confirmation" domain name. This confirmation domain is a pref by default set
to "example.com". TRR will also by default await the captive-portal detection
to raise its green flag before getting activated.
All prefs for TRR are under the "network.trr" hierarchy.
The DNS-over-HTTPS spec: https://tools.ietf.org/html/draft-ietf-doh-dns-over-https-03
MozReview-Commit-ID: GuuU6vjTjlm
--HG--
extra : rebase_source : 53fcca757334090ac05fec540ef29d109d5ceed3
1. Add a helper function Tokenize() which is able to handle quoted-string and quoted-pair.
2. Modify ParsedHeaderValueListList
- Use Tokenize() to split string by ','.
3. Modify ParsedHeaderValueList
- Use Tokenize() to split string by ';'.
- Function ParseNameAndValue() is for getting name and value from the string containing '='.
4. Handle backslash escapes for quoted string.
5. Reuse ParsedHeaderValueListList to parse server-timing header.
--HG--
extra : rebase_source : 7802a1ae9a6410c4ea992b1197018c5a3f994fa0
HTTP/1.1 pipelines have been subsumed by the more effective mux of spdy, h2, and soon quic.
The feature was never able to overcome the limitations of HoL blocking
and TCP reset, and their impact on performance and reliability.
Fundamentally mux is the only way we should be approaching that problem.
The massive amount of code - mostly heuristics to try and deal with
the HoL problem (by classifying things onto different transactions,
timers for broken servers, etc..) has become a maintenance burden with
minimal value given the default off state of the feature.
h2 is the new (working) strategy.
--HG--
extra : rebase_source : 5794957c1f078ca435480724d3caf9bdd861b7de
The bulk of this commit was generated by running:
run-clang-tidy.py \
-checks='-*,llvm-namespace-comment' \
-header-filter=^/.../mozilla-central/.* \
-fix
Patrick McManus
Nicholas Hurley
Daniel Stenberg
Kershaw Chang
Honza Bambas
Nicholas Hurley
Tom Tung
Amy Chung
Wei-Cheng Pan
Sebastian Hengst
Nathan Froyd
Nate Hughes ext:(%2C%20Valentin%20Gosu%20%3Cvalentin.gosu%40gmail.com%3E)
Birunthan Mohanathas
Ben Kelly
Steve Workman
Ryan VanderMeulen
Ehsan Akhgari
Robert Bindar