search

ameshkov / dnslookup

Simple command line utility to make DNS lookups to the specified server
MIT License
816 stars 72 forks source link

prompting Cannot make the DNS request #30

Closed liang-hiwin closed 2 years ago

liang-hiwin commented 2 years ago

Windows 10 x64 system, dns-over-quic uses Release v1.5.1 to test normal parsing. Switching to Release v1.7.1 to test parsing fails, prompting Cannot make the DNS request: reading response from quic://domain.com:8053: EOF

liang-hiwin commented 2 years ago

Release v1.5.1 test

PS C:\WINDOWS\system32> dnslookup www.ksksy.com  quic://domain.com:8053
dnslookup v. v1.5.1
dnslookup result:
;; opcode: QUERY, status: NOERROR, id: 39672
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; QUESTION SECTION:
;www.ksksy.com. IN       A

;; ANSWER SECTION:
www.ksksy.com.  6       IN      A       103.110.61.36

;; ADDITIONAL SECTION:

;; OPT PSEUDOSECTION:
; EDNS: version 0; flags: ; udp: 4096
; SUBNET: xxx.yyy.zzz.0/24/0

Release v1.7.1 test

PS C:\WINDOWS\system32> dnslookup www.ksksy.com  quic://domain.com:8053
dnslookup v. v1.7.1
2022/08/15 23:20:27 Cannot make the DNS request: reading response from quic://domain.com:8053: EOF
liang-hiwin commented 2 years ago

linux debian 10 x64 test

root@dns2:~# dnslookup www.ksksy.com  quic://domain.com:8053
dnslookup v. v1.7.1
2022/08/15 23:30:34 failed to sufficiently increase receive buffer size (was: 208 kiB, wanted: 2048 kiB, got: 416 kiB). See https://github.com/lucas-clemente/quic-go/wiki/UDP-Receive-Buffer-Size for details.
2022/08/15 23:30:34 Cannot make the DNS request: reading response from quic://domain.com:8053: EOF
liang-hiwin commented 2 years ago

Increase sysctl -w net.core.rmem_max=2500000 in this way, the test is invalid

ameshkov commented 2 years ago

@thb007 note that DoQ standard has changed in between, probably your server uses an old draft.

With DoQ v1.0 DNS messages are encoded with a 2-octet prefix which was not needed in the first drafts.