You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
tailscale/net/dns/resolver
David Crawshaw f414a9cc01 net/dns/resolver: EDNS OPT record off-by-one
I don't know how to get access to a real packet. Basing this commit
entirely off:

       +------------+--------------+------------------------------+
       | Field Name | Field Type   | Description                  |
       +------------+--------------+------------------------------+
       | NAME       | domain name  | MUST be 0 (root domain)      |
       | TYPE       | u_int16_t    | OPT (41)                     |
       | CLASS      | u_int16_t    | requestor's UDP payload size |
       | TTL        | u_int32_t    | extended RCODE and flags     |
       | RDLEN      | u_int16_t    | length of all RDATA          |
       | RDATA      | octet stream | {attribute,value} pairs      |
       +------------+--------------+------------------------------+

From https://datatracker.ietf.org/doc/html/rfc6891#section-6.1.2

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
3 years ago
..
doh_test.go net/dns/resolver: fall back to IPv6 for well-known DoH servers if v4 fails 3 years ago
forwarder.go net/dns/resolver: EDNS OPT record off-by-one 3 years ago
macios_ext.go net/dns{,/resolver}: refactor DNS forwarder, send out of right link on macOS/iOS 3 years ago
neterr_darwin.go net/dns/resolver: permit larger max responses, signal truncation 3 years ago
neterr_other.go net/dns/resolver: fmt item 3 years ago
neterr_windows.go net/dns/resolver: permit larger max responses, signal truncation 3 years ago
tsdns.go net/dns/resolver: race well-known resolvers less aggressively 3 years ago
tsdns_server_test.go net/dns/resolver: clamp EDNS size 3 years ago
tsdns_test.go net/dns/resolver: clamp EDNS size 3 years ago