git.r.bdr.sh - rbdr/mobius/blob - hotline/transfer.go

   1 package hotline
   2
   3 import (
   4         "bytes"
   5         "encoding/binary"
   6         "errors"
   7 )
   8
   9 type transfer struct {
  10         Protocol        [4]byte // "HTXF" 0x48545846
  11         ReferenceNumber [4]byte // Unique ID generated for the transfer
  12         DataSize        [4]byte // File size
  13         RSVD            [4]byte // Not implemented in Hotline Protocol
  14 }
  15
  16 var HTXF = [4]byte{0x48, 0x54, 0x58, 0x46} // (HTXF) is the only supported transfer protocol
  17
  18 func (tf *transfer) Write(b []byte) (int, error) {
  19         if err := binary.Read(bytes.NewReader(b), binary.BigEndian, tf); err != nil {
  20                 return 0, err
  21         }
  22
  23         if tf.Protocol != HTXF {
  24                 return 0, errors.New("invalid protocol")
  25         }
  26
  27         return len(b), nil
  28 }