clash/adapter/outbound/reject.go
2021-11-20 12:34:14 +08:00

81 lines
2 KiB
Go

package outbound
import (
"context"
"io"
"net"
"time"
"github.com/Dreamacro/clash/component/dialer"
C "github.com/Dreamacro/clash/constant"
)
type Reject struct {
*Base
}
// DialContext implements C.ProxyAdapter
func (r *Reject) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.Conn, error) {
return NewConn(&nopConn{}, r), nil
}
// ListenPacketContext implements C.ProxyAdapter
func (r *Reject) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.PacketConn, error) {
return newPacketConn(newNopPacketConn(), r), nil
}
func NewReject() *Reject {
return &Reject{
Base: &Base{
name: "REJECT",
tp: C.Reject,
udp: true,
},
}
}
type nopConn struct{}
func (rw *nopConn) Read(b []byte) (int, error) {
return 0, io.EOF
}
func (rw *nopConn) Write(b []byte) (int, error) {
return 0, io.EOF
}
func (rw *nopConn) Close() error { return nil }
func (rw *nopConn) LocalAddr() net.Addr { return nil }
func (rw *nopConn) RemoteAddr() net.Addr { return nil }
func (rw *nopConn) SetDeadline(time.Time) error { return nil }
func (rw *nopConn) SetReadDeadline(time.Time) error { return nil }
func (rw *nopConn) SetWriteDeadline(time.Time) error { return nil }
type nopPacketConn struct {
ch chan struct{}
}
func (npc *nopPacketConn) WriteTo(b []byte, addr net.Addr) (n int, err error) {
return len(b), nil
}
func (npc *nopPacketConn) ReadFrom(b []byte) (int, net.Addr, error) {
<-npc.ch
return 0, nil, io.EOF
}
func (npc *nopPacketConn) Close() error {
close(npc.ch)
return nil
}
func (npc *nopPacketConn) LocalAddr() net.Addr { return &net.UDPAddr{IP: net.IPv4zero, Port: 0} }
func (npc *nopPacketConn) SetDeadline(time.Time) error { return nil }
func (npc *nopPacketConn) SetReadDeadline(time.Time) error { return nil }
func (npc *nopPacketConn) SetWriteDeadline(time.Time) error { return nil }
func newNopPacketConn() *nopPacketConn {
return &nopPacketConn{
ch: make(chan struct{}),
}
}