113 lines
2.7 KiB
Go
113 lines
2.7 KiB
Go
package outboundgroup
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import (
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"context"
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"encoding/json"
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"errors"
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"github.com/Dreamacro/clash/adapter/outbound"
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"github.com/Dreamacro/clash/common/singledo"
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"github.com/Dreamacro/clash/component/dialer"
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C "github.com/Dreamacro/clash/constant"
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"github.com/Dreamacro/clash/constant/provider"
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)
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type Selector struct {
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*outbound.Base
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disableUDP bool
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single *singledo.Single
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selected string
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providers []provider.ProxyProvider
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}
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// DialContext implements C.ProxyAdapter
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func (s *Selector) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.Conn, error) {
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c, err := s.selectedProxy(true).DialContext(ctx, metadata, s.Base.DialOptions(opts...)...)
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if err == nil {
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c.AppendToChains(s)
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}
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return c, err
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}
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// ListenPacketContext implements C.ProxyAdapter
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func (s *Selector) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.PacketConn, error) {
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pc, err := s.selectedProxy(true).ListenPacketContext(ctx, metadata, s.Base.DialOptions(opts...)...)
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if err == nil {
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pc.AppendToChains(s)
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}
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return pc, err
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}
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// SupportUDP implements C.ProxyAdapter
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func (s *Selector) SupportUDP() bool {
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if s.disableUDP {
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return false
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}
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return s.selectedProxy(false).SupportUDP()
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}
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// MarshalJSON implements C.ProxyAdapter
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func (s *Selector) MarshalJSON() ([]byte, error) {
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var all []string
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for _, proxy := range getProvidersProxies(s.providers, false) {
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all = append(all, proxy.Name())
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}
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return json.Marshal(map[string]interface{}{
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"type": s.Type().String(),
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"now": s.Now(),
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"all": all,
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})
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}
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func (s *Selector) Now() string {
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return s.selectedProxy(false).Name()
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}
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func (s *Selector) Set(name string) error {
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for _, proxy := range getProvidersProxies(s.providers, false) {
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if proxy.Name() == name {
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s.selected = name
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s.single.Reset()
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return nil
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}
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}
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return errors.New("proxy not exist")
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}
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// Unwrap implements C.ProxyAdapter
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func (s *Selector) Unwrap(metadata *C.Metadata) C.Proxy {
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return s.selectedProxy(true)
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}
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func (s *Selector) selectedProxy(touch bool) C.Proxy {
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elm, _, _ := s.single.Do(func() (interface{}, error) {
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proxies := getProvidersProxies(s.providers, touch)
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for _, proxy := range proxies {
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if proxy.Name() == s.selected {
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return proxy, nil
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}
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}
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return proxies[0], nil
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})
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return elm.(C.Proxy)
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}
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func NewSelector(option *GroupCommonOption, providers []provider.ProxyProvider) *Selector {
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selected := providers[0].Proxies()[0].Name()
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return &Selector{
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Base: outbound.NewBase(outbound.BaseOption{
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Name: option.Name,
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Type: C.Selector,
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Interface: option.Interface,
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}),
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single: singledo.NewSingle(defaultGetProxiesDuration),
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providers: providers,
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selected: selected,
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disableUDP: option.DisableUDP,
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}
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}
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