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chore: no longer used net.DefaultResolver when dns section is disabled, now is equally only "system://"

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This commit is contained in:
wwqgtxx
2024-10-02 14:44:52 +08:00
parent 990de84391
commit 4a16d22398
10 changed files with 40 additions and 93 deletions
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12
component/resolver/defaults.go
View File

@@ -1,12 +0,0 @@
//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
package resolver
import _ "unsafe"
//go:linkname defaultNS net.defaultNS
var defaultNS []string
func init() {
defaultNS = []string{"114.114.114.114:53", "8.8.8.8:53"}
}

19
component/resolver/host_windows.go
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@@ -1,19 +0,0 @@
//go:build !go1.22
// a simple standard lib fix from: https://github.com/golang/go/commit/33d4a5105cf2b2d549922e909e9239a48b8cefcc
package resolver
import (
"golang.org/x/sys/windows"
_ "unsafe"
)
//go:linkname testHookHostsPath net.testHookHostsPath
var testHookHostsPath string
func init() {
if dir, err := windows.GetSystemDirectory(); err == nil {
testHookHostsPath = dir + "/Drivers/etc/hosts"
}
}

31
component/resolver/resolver.go
View File

@@ -4,7 +4,6 @@ import (
"context"
"errors"
"fmt"
"net"
"net/netip"
"strings"
"time"
@@ -23,6 +22,9 @@ var (
// ProxyServerHostResolver resolve ip to proxies server host
ProxyServerHostResolver Resolver
// SystemResolver always using system dns, and was init in dns module
SystemResolver Resolver
// DisableIPv6 means don't resolve ipv6 host
// default value is true
DisableIPv6 = true
@@ -72,14 +74,7 @@ func LookupIPv4WithResolver(ctx context.Context, host string, r Resolver) ([]net
return r.LookupIPv4(ctx, host)
}
ipAddrs, err := net.DefaultResolver.LookupNetIP(ctx, "ip4", host)
if err != nil {
return nil, err
} else if len(ipAddrs) == 0 {
return nil, ErrIPNotFound
}
return ipAddrs, nil
return SystemResolver.LookupIPv4(ctx, host)
}
// LookupIPv4 with a host, return ipv4 list
@@ -128,14 +123,7 @@ func LookupIPv6WithResolver(ctx context.Context, host string, r Resolver) ([]net
return r.LookupIPv6(ctx, host)
}
ipAddrs, err := net.DefaultResolver.LookupNetIP(ctx, "ip6", host)
if err != nil {
return nil, err
} else if len(ipAddrs) == 0 {
return nil, ErrIPNotFound
}
return ipAddrs, nil
return SystemResolver.LookupIPv6(ctx, host)
}
// LookupIPv6 with a host, return ipv6 list
@@ -177,14 +165,7 @@ func LookupIPWithResolver(ctx context.Context, host string, r Resolver) ([]netip
return []netip.Addr{ip}, nil
}
ips, err := net.DefaultResolver.LookupNetIP(ctx, "ip", host)
if err != nil {
return nil, err
} else if len(ips) == 0 {
return nil, ErrIPNotFound
}
return ips, nil
return SystemResolver.LookupIP(ctx, host)
}
// LookupIP with a host, return ip