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fix: use bootstrap address in routedns resolvers to avoid loopback (closes #408)

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This commit is contained in:
Toby 2022-08-21 19:40:47 -07:00
parent a10abd473f
commit a31f826a1e
1 changed files with 39 additions and 7 deletions
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46
cmd/resolver.go
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@ -3,6 +3,7 @@ package main
import (
"errors"
"net"
"net/url"
"strings"
"github.com/HyNetwork/hysteria/pkg/utils"
@ -49,22 +50,41 @@ func setResolver(dns string) error {
r = client
} else if strings.HasPrefix(dns, "https://") {
// DoH resolver
client, err := rdns.NewDoHClient("doh", dns, rdns.DoHClientOptions{})
if err != nil {
if dohURL, err := url.Parse(dns); err != nil {
return err
} else {
// Need to set bootstrap address to avoid loopback DNS lookup
dohIPAddr, err := net.ResolveIPAddr("ip", dohURL.Hostname())
if err != nil {
return err
}
client, err := rdns.NewDoHClient("doh", dns, rdns.DoHClientOptions{
BootstrapAddr: dohIPAddr.String(),
})
if err != nil {
return err
}
r = client
}
r = client
} else if strings.HasPrefix(dns, "tls://") {
// DoT resolver
dns = strings.TrimPrefix(dns, "tls://")
if dns == "" {
return errInvalidSyntax
}
if _, _, err := utils.SplitHostPort(dns); err != nil {
// Append the default DoT port
dotHost, _, err := utils.SplitHostPort(dns)
if err != nil {
// Append the default DNS port
dns = net.JoinHostPort(dns, "853")
}
client, err := rdns.NewDoTClient("dot", dns, rdns.DoTClientOptions{})
// Need to set bootstrap address to avoid loopback DNS lookup
dotIPAddr, err := net.ResolveIPAddr("ip", dotHost)
if err != nil {
return err
}
client, err := rdns.NewDoTClient("dot", dns, rdns.DoTClientOptions{
BootstrapAddr: dotIPAddr.String(),
})
if err != nil {
return err
}
@ -75,7 +95,19 @@ func setResolver(dns string) error {
if dns == "" {
return errInvalidSyntax
}
client, err := rdns.NewDoQClient("doq", dns, rdns.DoQClientOptions{})
doqHost, _, err := utils.SplitHostPort(dns)
if err != nil {
// Append the default DNS port
dns = net.JoinHostPort(dns, "853")
}
// Need to set bootstrap address to avoid loopback DNS lookup
doqIPAddr, err := net.ResolveIPAddr("ip", doqHost)
if err != nil {
return err
}
client, err := rdns.NewDoQClient("doq", dns, rdns.DoQClientOptions{
BootstrapAddr: doqIPAddr.String(),
})
if err != nil {
return err
}