"errors"
"net"
+ "github.com/RoaringBitmap/roaring"
+ "github.com/anacrolix/missinggo/v2"
+ "golang.org/x/time/rate"
+
"github.com/anacrolix/torrent/metainfo"
pp "github.com/anacrolix/torrent/peer_protocol"
+ "github.com/anacrolix/torrent/types"
+ "github.com/anacrolix/torrent/types/infohash"
)
-type chunkSpec struct {
- Begin, Length pp.Integer
-}
+type (
+ Request = types.Request
+ ChunkSpec = types.ChunkSpec
+ piecePriority = types.PiecePriority
+)
-type request struct {
- Index pp.Integer
- chunkSpec
-}
+const (
+ PiecePriorityNormal = types.PiecePriorityNormal
+ PiecePriorityNone = types.PiecePriorityNone
+ PiecePriorityNow = types.PiecePriorityNow
+ PiecePriorityReadahead = types.PiecePriorityReadahead
+ PiecePriorityNext = types.PiecePriorityNext
+ PiecePriorityHigh = types.PiecePriorityHigh
+)
-func newRequest(index, begin, length pp.Integer) request {
- return request{index, chunkSpec{begin, length}}
+func newRequest(index, begin, length pp.Integer) Request {
+ return Request{index, ChunkSpec{begin, length}}
}
-func newRequestFromMessage(msg *pp.Message) request {
+func newRequestFromMessage(msg *pp.Message) Request {
switch msg.Type {
case pp.Request, pp.Cancel, pp.Reject:
return newRequest(msg.Index, msg.Begin, msg.Length)
}
// The size in bytes of a metadata extension piece.
-func metadataPieceSize(totalSize int, piece int) int {
+func metadataPieceSize(totalSize, piece int) int {
ret := totalSize - piece*(1<<14)
if ret > 1<<14 {
ret = 1 << 14
}
// Return the request that would include the given offset into the torrent data.
-func torrentOffsetRequest(torrentLength, pieceSize, chunkSize, offset int64) (
- r request, ok bool) {
+func torrentOffsetRequest(
+ torrentLength, pieceSize, chunkSize, offset int64,
+) (
+ r Request, ok bool,
+) {
if offset < 0 || offset >= torrentLength {
return
}
return
}
-func torrentRequestOffset(torrentLength, pieceSize int64, r request) (off int64) {
+func torrentRequestOffset(torrentLength, pieceSize int64, r Request) (off int64) {
off = int64(r.Index)*pieceSize + int64(r.Begin)
if off < 0 || off >= torrentLength {
- panic("invalid request")
+ panic("invalid Request")
}
return
}
return nil
}
-func chunkIndexSpec(index int, pieceLength, chunkSize pp.Integer) chunkSpec {
- ret := chunkSpec{pp.Integer(index) * chunkSize, chunkSize}
+func chunkIndexSpec(index, pieceLength, chunkSize pp.Integer) ChunkSpec {
+ ret := ChunkSpec{pp.Integer(index) * chunkSize, chunkSize}
if ret.Begin+ret.Length > pieceLength {
ret.Length = pieceLength - ret.Begin
}
return ret
}
-func connLessTrusted(l, r *connection) bool {
- return l.netGoodPiecesDirtied() < r.netGoodPiecesDirtied()
+func connLessTrusted(l, r *Peer) bool {
+ return l.trust().Less(r.trust())
+}
+
+func connIsIpv6(nc interface {
+ LocalAddr() net.Addr
+},
+) bool {
+ ra := nc.LocalAddr()
+ rip := addrIpOrNil(ra)
+ return rip.To4() == nil && rip.To16() != nil
+}
+
+func clamp(min, value, max int64) int64 {
+ if min > max {
+ panic("harumph")
+ }
+ if value < min {
+ value = min
+ }
+ if value > max {
+ value = max
+ }
+ return value
+}
+
+func max(as ...int64) int64 {
+ ret := as[0]
+ for _, a := range as[1:] {
+ if a > ret {
+ ret = a
+ }
+ }
+ return ret
+}
+
+func maxInt(as ...int) int {
+ ret := as[0]
+ for _, a := range as[1:] {
+ if a > ret {
+ ret = a
+ }
+ }
+ return ret
+}
+
+func min(as ...int64) int64 {
+ ret := as[0]
+ for _, a := range as[1:] {
+ if a < ret {
+ ret = a
+ }
+ }
+ return ret
+}
+
+func minInt(as ...int) int {
+ ret := as[0]
+ for _, a := range as[1:] {
+ if a < ret {
+ ret = a
+ }
+ }
+ return ret
}
-// Convert a net.Addr to its compact IP representation. Either 4 or 16 bytes
-// per "yourip" field of http://www.bittorrent.org/beps/bep_0010.html.
-func addrCompactIP(addr net.Addr) (string, error) {
- host, _, err := net.SplitHostPort(addr.String())
- if err != nil {
- return "", err
- }
- ip := net.ParseIP(host)
- if v4 := ip.To4(); v4 != nil {
- if len(v4) != 4 {
- panic(v4)
+var unlimited = rate.NewLimiter(rate.Inf, 0)
+
+type (
+ pieceIndex = int
+ // Deprecated: Use infohash.T directly to avoid unnecessary imports.
+ InfoHash = infohash.T
+ IpPort = missinggo.IpPort
+)
+
+func boolSliceToBitmap(slice []bool) (rb roaring.Bitmap) {
+ for i, b := range slice {
+ if b {
+ rb.AddInt(i)
}
- return string(v4), nil
}
- return string(ip.To16()), nil
+ return
}