github.com/anacrolix/torrent@v1.61.0/peer_protocol/extended.go (about)

     1  package peer_protocol
     2  
     3  import (
     4  	"net"
     5  )
     6  
     7  // http://www.bittorrent.org/beps/bep_0010.html
     8  type (
     9  	ExtendedHandshakeMessage struct {
    10  		M    map[ExtensionName]ExtensionNumber `bencode:"m"`
    11  		V    string                            `bencode:"v,omitempty"`
    12  		Reqq int                               `bencode:"reqq,omitempty"`
    13  		// The only mention of this I can find is in https://www.bittorrent.org/beps/bep_0011.html
    14  		// for bit 0x01.
    15  		Encryption bool `bencode:"e"`
    16  		// BEP 9
    17  		MetadataSize int `bencode:"metadata_size,omitempty"`
    18  		// The local client port. It would be redundant for the receiving side of
    19  		// a connection to send this.
    20  		Port   int       `bencode:"p,omitempty"`
    21  		YourIp CompactIp `bencode:"yourip,omitempty"`
    22  		Ipv4   CompactIp `bencode:"ipv4,omitempty"`
    23  		Ipv6   net.IP    `bencode:"ipv6,omitempty"`
    24  	}
    25  
    26  	ExtensionName   string
    27  	ExtensionNumber uint8
    28  )
    29  
    30  const (
    31  	// http://www.bittorrent.org/beps/bep_0011.html
    32  	ExtensionNamePex ExtensionName = "ut_pex"
    33  
    34  	ExtensionDeleteNumber ExtensionNumber = 0
    35  )
    36  
    37  func (me *ExtensionNumber) UnmarshalBinary(b []byte) error {
    38  	*me = ExtensionNumber(b[0])
    39  	return nil
    40  }