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piece_progress.go
48 lines (42 loc) · 881 Bytes
/
piece_progress.go
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package p2p
import (
"github.com/brianlusina/tclient/internal/client"
"github.com/brianlusina/tclient/pkg/message"
)
type pieceProgress struct {
index int
client *client.Client
buf []byte
downloaded int
requested int
backlog int
}
func (state *pieceProgress) readMessage() error {
msg, err := state.client.Read() // blocks
if err != nil {
return err
}
if msg == nil { // keep alive
return nil
}
switch msg.ID {
case message.MsgUnchoke:
state.client.Choked = false
case message.MsgChoke:
state.client.Choked = true
case message.MsgHave:
index, err := message.ParseHave(msg)
if err != nil {
return err
}
state.client.Bitfield.SetPiece(index)
case message.MsgPiece:
n, err := message.ParsePiece(state.index, state.buf, msg)
if err != nil {
return err
}
state.downloaded += n
state.backlog--
}
return nil
}