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Hugo Hörnquist
Guile DNS
Commits
e49a1bed
Commit
e49a1bed
authored
Jun 1, 2022
by
Hugo Hörnquist
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Add very basic sample server.
parent
08b7151c
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e49a1bed
(
use-modules
(
rnrs
bytevectors
)
(
srfi
srfi-1
)
(
srfi
srfi-71
)
(
dns
))
(
define
ai
(
car
(
getaddrinfo
"::"
"5353"
AI_PASSIVE
0
SOCK_DGRAM
)))
(
define
sock
(
socket
(
addrinfo:fam
ai
)
(
addrinfo:socktype
ai
)
(
addrinfo:protocol
ai
)))
(
bind
sock
(
addrinfo:addr
ai
)
)
(
define
(
pack-bv
bv
size
)
(
let
((
return
(
make-bytevector
size
)))
(
bytevector-copy!
bv
0
return
0
size
)
return
))
(
define
bv
(
make-bytevector
512
))
(
let
((
_
return-addr
(
car+cdr
(
recvfrom!
sock
bv
))))
(
let
((
q-message
_
((
bytes->dns-message
bv
)
0
)))
(
let
((
r-message
(
make-dns-message
header:
(
make-dns-header
id:
(
id
(
header
q-message
))
qr:
#t
opcode:
'QUERY
qdcount:
1
ancount:
1
arcount:
0
)
questions:
(
questions
q-message
)
answers:
(
list
(
make-dns-rr-data
name:
(
name
(
car
(
questions
q-message
)))
type:
(
type
(
car
(
questions
q-message
)))
class:
(
class
(
car
(
questions
q-message
)))
ttl:
300
rdata:
"10.30.40.20"
))
; additionals: (additionals q-message)
)))
(
let*
((
_
bv
ptr
((
dns-message->bytes
r-message
)
(
make-bytevector
100
)
0
))
(
bv
(
pack-bv
bv
ptr
)))
(
sendto
sock
bv
return-addr
)))))
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Hugo Hörnquist
@hugo
mentioned in issue
#5 (closed)
·
Jun 1, 2022
mentioned in issue
#5 (closed)
mentioned in issue #5
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