clash/adapter/outbound/reject.go

88 lines
2.4 KiB
Go

package outbound
import (
"context"
"io"
"net"
"time"
"github.com/Dreamacro/clash/common/buf"
"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(nopPacketConn{}, r), nil
}
func NewReject() *Reject {
return &Reject{
Base: &Base{
name: "REJECT",
tp: C.Reject,
udp: true,
prefer: C.DualStack,
},
}
}
func NewPass() *Reject {
return &Reject{
Base: &Base{
name: "PASS",
tp: C.Pass,
udp: true,
prefer: C.DualStack,
},
}
}
type nopConn struct{}
func (rw nopConn) Read(b []byte) (int, error) {
return 0, io.EOF
}
func (rw nopConn) ReadBuffer(buffer *buf.Buffer) error {
return io.EOF
}
func (rw nopConn) Write(b []byte) (int, error) {
return 0, io.EOF
}
func (rw nopConn) WriteBuffer(buffer *buf.Buffer) error {
return 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 }
var udpAddrIPv4Unspecified = &net.UDPAddr{IP: net.IPv4zero, Port: 0}
type nopPacketConn 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) { return 0, nil, io.EOF }
func (npc nopPacketConn) WaitReadFrom() ([]byte, func(), net.Addr, error) {
return nil, nil, nil, io.EOF
}
func (npc nopPacketConn) Close() error { return nil }
func (npc nopPacketConn) LocalAddr() net.Addr { return udpAddrIPv4Unspecified }
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 }