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chore: resolver priority return TypeA in ResolveIP (not effected LookupIP)

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This commit is contained in:
gVisor bot 2023-04-12 22:06:21 +08:00
parent 321ad945ba
commit e88a77202d
3 changed files with 18 additions and 52 deletions
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13
component/dialer/dialer.go
View file

@ -157,7 +157,7 @@ func concurrentDualStackDialContext(ctx context.Context, network string, ips []n
}
func dualStackDialContext(ctx context.Context, dialFn dialFunc, network string, ips []netip.Addr, port string, opt *option) (net.Conn, error) {
ipv4s, ipv6s := sortationAddr(ips)
ipv4s, ipv6s := resolver.SortationAddr(ips)
preferIPVersion := opt.prefer
fallbackTicker := time.NewTicker(fallbackTimeout)
@ -309,17 +309,6 @@ func parseAddr(ctx context.Context, network, address string, preferResolver reso
return ips, port, nil
}
func sortationAddr(ips []netip.Addr) (ipv4s, ipv6s []netip.Addr) {
for _, v := range ips {
if v.Is4() { // 4in6 parse was in parseAddr
ipv4s = append(ipv4s, v)
} else {
ipv6s = append(ipv6s, v)
}
}
return
}
type Dialer struct {
Opt option
}

22
component/resolver/resolver.go
View file

@ -44,9 +44,6 @@ type Resolver interface {
LookupIP(ctx context.Context, host string) (ips []netip.Addr, err error)
LookupIPv4(ctx context.Context, host string) (ips []netip.Addr, err error)
LookupIPv6(ctx context.Context, host string) (ips []netip.Addr, err error)
ResolveIP(ctx context.Context, host string) (ip netip.Addr, err error)
ResolveIPv4(ctx context.Context, host string) (ip netip.Addr, err error)
ResolveIPv6(ctx context.Context, host string) (ip netip.Addr, err error)
ExchangeContext(ctx context.Context, m *dns.Msg) (msg *dns.Msg, err error)
Invalid() bool
}
@ -201,10 +198,14 @@ func ResolveIPWithResolver(ctx context.Context, host string, r Resolver) (netip.
} else if len(ips) == 0 {
return netip.Addr{}, fmt.Errorf("%w: %s", ErrIPNotFound, host)
}
return ips[fastrand.Intn(len(ips))], nil
ipv4s, ipv6s := SortationAddr(ips)
if len(ipv4s) > 0 {
return ipv4s[fastrand.Intn(len(ipv4s))], nil
}
return ipv6s[fastrand.Intn(len(ipv6s))], nil
}
// ResolveIP with a host, return ip
// ResolveIP with a host, return ip and priority return TypeA
func ResolveIP(ctx context.Context, host string) (netip.Addr, error) {
return ResolveIPWithResolver(ctx, host, DefaultResolver)
}
@ -265,3 +266,14 @@ func LookupIPProxyServerHost(ctx context.Context, host string) ([]netip.Addr, er
}
return LookupIP(ctx, host)
}
func SortationAddr(ips []netip.Addr) (ipv4s, ipv6s []netip.Addr) {
for _, v := range ips {
if v.Unmap().Is4() {
ipv4s = append(ipv4s, v)
} else {
ipv6s = append(ipv6s, v)
}
}
return
}

35
dns/resolver.go
View file

@ -3,7 +3,6 @@ package dns
import (
"context"
"errors"
"fmt"
"net/netip"
"strings"
"time"
@ -20,7 +19,6 @@ import (
"github.com/Dreamacro/clash/log"
D "github.com/miekg/dns"
"github.com/zhangyunhao116/fastrand"
"golang.org/x/sync/singleflight"
)
@ -119,49 +117,16 @@ func (r *Resolver) LookupIP(ctx context.Context, host string) (ips []netip.Addr,
return ips, nil
}
// ResolveIP request with TypeA and TypeAAAA, priority return TypeA
func (r *Resolver) ResolveIP(ctx context.Context, host string) (ip netip.Addr, err error) {
ips, err := r.LookupIPPrimaryIPv4(ctx, host)
if err != nil {
return netip.Addr{}, err
} else if len(ips) == 0 {
return netip.Addr{}, fmt.Errorf("%w: %s", resolver.ErrIPNotFound, host)
}
return ips[fastrand.Intn(len(ips))], nil
}
// LookupIPv4 request with TypeA
func (r *Resolver) LookupIPv4(ctx context.Context, host string) ([]netip.Addr, error) {
return r.lookupIP(ctx, host, D.TypeA)
}
// ResolveIPv4 request with TypeA
func (r *Resolver) ResolveIPv4(ctx context.Context, host string) (ip netip.Addr, err error) {
ips, err := r.lookupIP(ctx, host, D.TypeA)
if err != nil {
return netip.Addr{}, err
} else if len(ips) == 0 {
return netip.Addr{}, fmt.Errorf("%w: %s", resolver.ErrIPNotFound, host)
}
return ips[fastrand.Intn(len(ips))], nil
}
// LookupIPv6 request with TypeAAAA
func (r *Resolver) LookupIPv6(ctx context.Context, host string) ([]netip.Addr, error) {
return r.lookupIP(ctx, host, D.TypeAAAA)
}
// ResolveIPv6 request with TypeAAAA
func (r *Resolver) ResolveIPv6(ctx context.Context, host string) (ip netip.Addr, err error) {
ips, err := r.lookupIP(ctx, host, D.TypeAAAA)
if err != nil {
return netip.Addr{}, err
} else if len(ips) == 0 {
return netip.Addr{}, fmt.Errorf("%w: %s", resolver.ErrIPNotFound, host)
}
return ips[fastrand.Intn(len(ips))], nil
}
func (r *Resolver) shouldIPFallback(ip netip.Addr) bool {
for _, filter := range r.fallbackIPFilters {
if filter.Match(ip) {