mirror of
https://github.com/XTLS/Xray-core.git
synced 2024-11-25 01:51:28 +00:00
7086d286be
* Add feature migration notice * Remove legacy code of transport processing * Clear legacy proto field * Fix missing * Unify protocolname * Test remove * Supressor * Weird code * Remove errorgen related comments
50 lines
1.3 KiB
Go
50 lines
1.3 KiB
Go
package dns
|
|
|
|
import (
|
|
"context"
|
|
|
|
"github.com/xtls/xray-core/common/errors"
|
|
"github.com/xtls/xray-core/common/net"
|
|
"github.com/xtls/xray-core/features/dns"
|
|
"github.com/xtls/xray-core/features/routing"
|
|
)
|
|
|
|
// ResolvableContext is an implementation of routing.Context, with domain resolving capability.
|
|
type ResolvableContext struct {
|
|
routing.Context
|
|
dnsClient dns.Client
|
|
resolvedIPs []net.IP
|
|
}
|
|
|
|
// GetTargetIPs overrides original routing.Context's implementation.
|
|
func (ctx *ResolvableContext) GetTargetIPs() []net.IP {
|
|
if len(ctx.resolvedIPs) > 0 {
|
|
return ctx.resolvedIPs
|
|
}
|
|
|
|
if domain := ctx.GetTargetDomain(); len(domain) != 0 {
|
|
ips, err := ctx.dnsClient.LookupIP(domain, dns.IPOption{
|
|
IPv4Enable: true,
|
|
IPv6Enable: true,
|
|
FakeEnable: false,
|
|
})
|
|
if err == nil {
|
|
ctx.resolvedIPs = ips
|
|
return ips
|
|
}
|
|
errors.LogInfoInner(context.Background(), err, "resolve ip for ", domain)
|
|
}
|
|
|
|
if ips := ctx.Context.GetTargetIPs(); len(ips) != 0 {
|
|
return ips
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// ContextWithDNSClient creates a new routing context with domain resolving capability.
|
|
// Resolved domain IPs can be retrieved by GetTargetIPs().
|
|
func ContextWithDNSClient(ctx routing.Context, client dns.Client) routing.Context {
|
|
return &ResolvableContext{Context: ctx, dnsClient: client}
|
|
}
|