awl/query/DNSCrypt.go
Sam 80648e08f6
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continuous-integration/drone/push Build is passing
(refactor) Draw the rest of the owl (#38)
Reviewed-on: #38
2022-07-26 00:32:31 +00:00

58 lines
1 KiB
Go

// SPDX-License-Identifier: BSD-3-Clause
package query
import (
"time"
"git.froth.zone/sam/awl/cli"
"git.froth.zone/sam/awl/internal/helpers"
"github.com/ameshkov/dnscrypt/v2"
"github.com/miekg/dns"
)
type DNSCryptResolver struct {
opts cli.Options
}
func (r *DNSCryptResolver) LookUp(msg *dns.Msg) (helpers.Response, error) {
client := dnscrypt.Client{
Timeout: r.opts.Request.Timeout,
UDPSize: 1232,
}
if r.opts.TCP || r.opts.TLS {
client.Net = "tcp"
} else {
client.Net = "udp"
}
switch {
case r.opts.IPv4:
client.Net += "4"
case r.opts.IPv6:
client.Net += "6"
}
r.opts.Logger.Debug("Using", client.Net, "for making the request")
resolverInf, err := client.Dial(r.opts.Request.Server)
if err != nil {
return helpers.Response{}, err
}
now := time.Now()
res, err := client.Exchange(msg, resolverInf)
rtt := time.Since(now)
if err != nil {
return helpers.Response{}, err
}
r.opts.Logger.Info("Request successful")
return helpers.Response{
DNS: res,
RTT: rtt,
}, nil
}