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socks4.go
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socks4.go
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package protocol
import (
"github.com/v2ray/v2ray-core/common/errors"
)
type SocksVersion4Error struct {
errors.ErrorCode
}
var socksVersion4ErrorInstance = SocksVersion4Error{ErrorCode: 1000}
func NewSocksVersion4Error() SocksVersion4Error {
return socksVersion4ErrorInstance
}
func (err SocksVersion4Error) Error() string {
return err.Prefix() + "Request is socks version 4."
}
type Socks4AuthenticationRequest struct {
Version byte
Command byte
Port uint16
IP [4]byte
}
type Socks4AuthenticationResponse struct {
result byte
port uint16
ip []byte
}
func NewSocks4AuthenticationResponse(result byte, port uint16, ip []byte) *Socks4AuthenticationResponse {
return &Socks4AuthenticationResponse{
result: result,
port: port,
ip: ip,
}
}
func (r *Socks4AuthenticationResponse) ToBytes(buffer []byte) []byte {
if buffer == nil {
buffer = make([]byte, 8)
}
buffer[1] = r.result
buffer[2] = byte(r.port >> 8)
buffer[3] = byte(r.port)
copy(buffer[4:], r.ip)
return buffer
}