mirror of https://github.com/XTLS/Xray-core
53 lines
1.2 KiB
Go
53 lines
1.2 KiB
Go
package dns
|
|
|
|
import (
|
|
"github.com/xtls/xray-core/common/errors"
|
|
"github.com/xtls/xray-core/common/net"
|
|
"github.com/xtls/xray-core/common/serial"
|
|
"github.com/xtls/xray-core/features"
|
|
)
|
|
|
|
// IPOption is an object for IP query options.
|
|
type IPOption struct {
|
|
IPv4Enable bool
|
|
IPv6Enable bool
|
|
FakeEnable bool
|
|
}
|
|
|
|
// Client is a Xray feature for querying DNS information.
|
|
//
|
|
// xray:api:stable
|
|
type Client interface {
|
|
features.Feature
|
|
|
|
// LookupIP returns IP address for the given domain. IPs may contain IPv4 and/or IPv6 addresses.
|
|
LookupIP(domain string, option IPOption) ([]net.IP, error)
|
|
}
|
|
|
|
// ClientType returns the type of Client interface. Can be used for implementing common.HasType.
|
|
//
|
|
// xray:api:beta
|
|
func ClientType() interface{} {
|
|
return (*Client)(nil)
|
|
}
|
|
|
|
// ErrEmptyResponse indicates that DNS query succeeded but no answer was returned.
|
|
var ErrEmptyResponse = errors.New("empty response")
|
|
|
|
type RCodeError uint16
|
|
|
|
func (e RCodeError) Error() string {
|
|
return serial.Concat("rcode: ", uint16(e))
|
|
}
|
|
|
|
func RCodeFromError(err error) uint16 {
|
|
if err == nil {
|
|
return 0
|
|
}
|
|
cause := errors.Cause(err)
|
|
if r, ok := cause.(RCodeError); ok {
|
|
return uint16(r)
|
|
}
|
|
return 0
|
|
}
|