mirror of
https://github.com/xjasonlyu/tun2socks.git
synced 2025-10-05 08:47:00 +08:00
44 lines
881 B
Go
44 lines
881 B
Go
package proxy
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"net"
|
|
|
|
"github.com/xjasonlyu/tun2socks/v2/component/dialer"
|
|
M "github.com/xjasonlyu/tun2socks/v2/metadata"
|
|
"github.com/xjasonlyu/tun2socks/v2/proxy/proto"
|
|
"github.com/xjasonlyu/tun2socks/v2/transport/socks4"
|
|
)
|
|
|
|
var _ Proxy = (*Socks4)(nil)
|
|
|
|
type Socks4 struct {
|
|
*Base
|
|
|
|
userID string
|
|
}
|
|
|
|
func NewSocks4(addr, userID string) (*Socks4, error) {
|
|
return &Socks4{
|
|
Base: &Base{
|
|
addr: addr,
|
|
proto: proto.Socks4,
|
|
},
|
|
userID: userID,
|
|
}, nil
|
|
}
|
|
|
|
func (ss *Socks4) DialContext(ctx context.Context, metadata *M.Metadata) (c net.Conn, err error) {
|
|
c, err = dialer.DialContext(ctx, "tcp", ss.Addr())
|
|
if err != nil {
|
|
return nil, fmt.Errorf("connect to %s: %w", ss.Addr(), err)
|
|
}
|
|
setKeepAlive(c)
|
|
|
|
defer safeConnClose(c, err)
|
|
|
|
err = socks4.ClientHandshake(c, metadata.DestinationAddress(), socks4.CmdConnect, ss.userID)
|
|
return
|
|
}
|