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protocol.go
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protocol.go
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package httpTracker
import (
"fmt"
"github.com/anacrolix/dht/v2/krpc"
"github.com/anacrolix/torrent/bencode"
)
type HttpResponse struct {
FailureReason string `bencode:"failure reason"`
Interval int32 `bencode:"interval"`
TrackerId string `bencode:"tracker id"`
Complete int32 `bencode:"complete"`
Incomplete int32 `bencode:"incomplete"`
Peers Peers `bencode:"peers"`
// BEP 7
Peers6 krpc.CompactIPv6NodeAddrs `bencode:"peers6"`
}
type Peers struct {
List []Peer
Compact bool
}
func (me Peers) MarshalBencode() ([]byte, error) {
if me.Compact {
cnas := make([]krpc.NodeAddr, 0, len(me.List))
for _, peer := range me.List {
cnas = append(cnas, krpc.NodeAddr{
IP: peer.IP,
Port: peer.Port,
})
}
return krpc.CompactIPv4NodeAddrs(cnas).MarshalBencode()
} else {
return bencode.Marshal(me.List)
}
}
var (
_ bencode.Unmarshaler = (*Peers)(nil)
_ bencode.Marshaler = Peers{}
)
func (me *Peers) UnmarshalBencode(b []byte) (err error) {
var _v interface{}
err = bencode.Unmarshal(b, &_v)
if err != nil {
return
}
switch v := _v.(type) {
case string:
vars.Add("http responses with string peers", 1)
var cnas krpc.CompactIPv4NodeAddrs
err = cnas.UnmarshalBinary([]byte(v))
if err != nil {
return
}
me.Compact = true
for _, cp := range cnas {
me.List = append(me.List, Peer{
IP: cp.IP[:],
Port: cp.Port,
})
}
return
case []interface{}:
vars.Add("http responses with list peers", 1)
me.Compact = false
for _, i := range v {
var p Peer
p.FromDictInterface(i.(map[string]interface{}))
me.List = append(me.List, p)
}
return
default:
vars.Add("http responses with unhandled peers type", 1)
err = fmt.Errorf("unsupported type: %T", _v)
return
}
}