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anacrolix/torrent
metainfo/metainfo.go
UpvertedAnnounceList
func (mi *MetaInfo) UpvertedAnnounceList() AnnounceList { if mi.AnnounceList.OverridesAnnounce(mi.Announce) { return mi.AnnounceList } if mi.Announce != "" { return [][]string{[]string{mi.Announce}} } return nil }
go
func (mi *MetaInfo) UpvertedAnnounceList() AnnounceList { if mi.AnnounceList.OverridesAnnounce(mi.Announce) { return mi.AnnounceList } if mi.Announce != "" { return [][]string{[]string{mi.Announce}} } return nil }
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// Returns the announce list converted from the old single announce field if // necessary.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/metainfo/metainfo.go#L79-L87
train
anacrolix/torrent
cmd/torrent-pick/main.go
totalBytesEstimate
func totalBytesEstimate(tc *torrent.Client) (ret int64) { var noInfo, hadInfo int64 for _, t := range tc.Torrents() { info := t.Info() if info == nil { noInfo++ continue } ret += info.TotalLength() hadInfo++ } if hadInfo != 0 { // Treat each torrent without info as the average of those with, // ...
go
func totalBytesEstimate(tc *torrent.Client) (ret int64) { var noInfo, hadInfo int64 for _, t := range tc.Torrents() { info := t.Info() if info == nil { noInfo++ continue } ret += info.TotalLength() hadInfo++ } if hadInfo != 0 { // Treat each torrent without info as the average of those with, // ...
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// Returns an estimate of the total bytes for all torrents.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/cmd/torrent-pick/main.go#L51-L68
train
anacrolix/torrent
connection.go
ipv6
func (cn *connection) ipv6() bool { ip := cn.remoteAddr.IP if ip.To4() != nil { return false } return len(ip) == net.IPv6len }
go
func (cn *connection) ipv6() bool { ip := cn.remoteAddr.IP if ip.To4() != nil { return false } return len(ip) == net.IPv6len }
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// Returns true if the connection is over IPv6.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/connection.go#L137-L143
train
anacrolix/torrent
connection.go
hasPreferredNetworkOver
func (l *connection) hasPreferredNetworkOver(r *connection) (left, ok bool) { var ml multiLess ml.NextBool(l.isPreferredDirection(), r.isPreferredDirection()) ml.NextBool(!l.utp(), !r.utp()) ml.NextBool(l.ipv6(), r.ipv6()) return ml.FinalOk() }
go
func (l *connection) hasPreferredNetworkOver(r *connection) (left, ok bool) { var ml multiLess ml.NextBool(l.isPreferredDirection(), r.isPreferredDirection()) ml.NextBool(!l.utp(), !r.utp()) ml.NextBool(l.ipv6(), r.ipv6()) return ml.FinalOk() }
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// Returns whether the left connection should be preferred over the right one, // considering only their networking properties. If ok is false, we can't // decide.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/connection.go#L154-L160
train
anacrolix/torrent
connection.go
bestPeerNumPieces
func (cn *connection) bestPeerNumPieces() pieceIndex { if cn.t.haveInfo() { return cn.t.numPieces() } return cn.peerMinPieces }
go
func (cn *connection) bestPeerNumPieces() pieceIndex { if cn.t.haveInfo() { return cn.t.numPieces() } return cn.peerMinPieces }
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// The best guess at number of pieces in the torrent for this peer.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/connection.go#L194-L199
train
anacrolix/torrent
connection.go
setNumPieces
func (cn *connection) setNumPieces(num pieceIndex) error { cn.peerPieces.RemoveRange(bitmap.BitIndex(num), bitmap.ToEnd) cn.peerPiecesChanged() return nil }
go
func (cn *connection) setNumPieces(num pieceIndex) error { cn.peerPieces.RemoveRange(bitmap.BitIndex(num), bitmap.ToEnd) cn.peerPiecesChanged() return nil }
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// Correct the PeerPieces slice length. Return false if the existing slice is // invalid, such as by receiving badly sized BITFIELD, or invalid HAVE // messages.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/connection.go#L212-L216
train
anacrolix/torrent
connection.go
Post
func (cn *connection) Post(msg pp.Message) { torrent.Add(fmt.Sprintf("messages posted of type %s", msg.Type.String()), 1) // We don't need to track bytes here because a connection.w Writer wrapper // takes care of that (although there's some delay between us recording // the message, and the connection writer flush...
go
func (cn *connection) Post(msg pp.Message) { torrent.Add(fmt.Sprintf("messages posted of type %s", msg.Type.String()), 1) // We don't need to track bytes here because a connection.w Writer wrapper // takes care of that (although there's some delay between us recording // the message, and the connection writer flush...
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// Writes a message into the write buffer.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/connection.go#L330-L340
train
anacrolix/torrent
connection.go
nominalMaxRequests
func (cn *connection) nominalMaxRequests() (ret int) { if cn.t.requestStrategy == 3 { expectingTime := int64(cn.totalExpectingTime()) if expectingTime == 0 { expectingTime = math.MaxInt64 } else { expectingTime *= 2 } return int(clamp( 1, int64(cn.PeerMaxRequests), max( // It makes sense t...
go
func (cn *connection) nominalMaxRequests() (ret int) { if cn.t.requestStrategy == 3 { expectingTime := int64(cn.totalExpectingTime()) if expectingTime == 0 { expectingTime = math.MaxInt64 } else { expectingTime *= 2 } return int(clamp( 1, int64(cn.PeerMaxRequests), max( // It makes sense t...
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// The actual value to use as the maximum outbound requests.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/connection.go#L375-L402
train
anacrolix/torrent
connection.go
request
func (cn *connection) request(r request, mw messageWriter) bool { if _, ok := cn.requests[r]; ok { panic("chunk already requested") } if !cn.PeerHasPiece(pieceIndex(r.Index)) { panic("requesting piece peer doesn't have") } if _, ok := cn.t.conns[cn]; !ok { panic("requesting but not in active conns") } if c...
go
func (cn *connection) request(r request, mw messageWriter) bool { if _, ok := cn.requests[r]; ok { panic("chunk already requested") } if !cn.PeerHasPiece(pieceIndex(r.Index)) { panic("requesting piece peer doesn't have") } if _, ok := cn.t.conns[cn]; !ok { panic("requesting but not in active conns") } if c...
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// Proxies the messageWriter's response.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/connection.go#L482-L535
train
anacrolix/torrent
connection.go
writer
func (cn *connection) writer(keepAliveTimeout time.Duration) { var ( lastWrite time.Time = time.Now() keepAliveTimer *time.Timer ) keepAliveTimer = time.AfterFunc(keepAliveTimeout, func() { cn.mu().Lock() defer cn.mu().Unlock() if time.Since(lastWrite) >= keepAliveTimeout { cn.tickleWriter() } ...
go
func (cn *connection) writer(keepAliveTimeout time.Duration) { var ( lastWrite time.Time = time.Now() keepAliveTimer *time.Timer ) keepAliveTimer = time.AfterFunc(keepAliveTimeout, func() { cn.mu().Lock() defer cn.mu().Unlock() if time.Since(lastWrite) >= keepAliveTimeout { cn.tickleWriter() } ...
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// Routine that writes to the peer. Some of what to write is buffered by // activity elsewhere in the Client, and some is determined locally when the // connection is writable.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/connection.go#L593-L649
train
anacrolix/torrent
connection.go
iterBitmapsDistinct
func iterBitmapsDistinct(skip *bitmap.Bitmap, bms ...bitmap.Bitmap) iter.Func { return func(cb iter.Callback) { for _, bm := range bms { if !iter.All(func(i interface{}) bool { skip.Add(i.(int)) return cb(i) }, bitmap.Sub(bm, *skip).Iter) { return } } } }
go
func iterBitmapsDistinct(skip *bitmap.Bitmap, bms ...bitmap.Bitmap) iter.Func { return func(cb iter.Callback) { for _, bm := range bms { if !iter.All(func(i interface{}) bool { skip.Add(i.(int)) return cb(i) }, bitmap.Sub(bm, *skip).Iter) { return } } } }
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// Emits the indices in the Bitmaps bms in order, never repeating any index. // skip is mutated during execution, and its initial values will never be // emitted.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/connection.go#L684-L695
train
anacrolix/torrent
connection.go
shouldRequestWithoutBias
func (cn *connection) shouldRequestWithoutBias() bool { if cn.t.requestStrategy != 2 { return false } if len(cn.t.readers) == 0 { return false } if len(cn.t.conns) == 1 { return true } if cn == cn.t.fastestConn { return true } return false }
go
func (cn *connection) shouldRequestWithoutBias() bool { if cn.t.requestStrategy != 2 { return false } if len(cn.t.readers) == 0 { return false } if len(cn.t.conns) == 1 { return true } if cn == cn.t.fastestConn { return true } return false }
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// The connection should download highest priority pieces first, without any // inclination toward avoiding wastage. Generally we might do this if there's // a single connection, or this is the fastest connection, and we have active // readers that signal an ordering preference. It's conceivable that the best // connec...
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/connection.go#L738-L752
train
anacrolix/torrent
connection.go
stopRequestingPiece
func (cn *connection) stopRequestingPiece(piece pieceIndex) bool { return cn.pieceRequestOrder.Remove(bitmap.BitIndex(piece)) }
go
func (cn *connection) stopRequestingPiece(piece pieceIndex) bool { return cn.pieceRequestOrder.Remove(bitmap.BitIndex(piece)) }
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// check callers updaterequests
[ "check", "callers", "updaterequests" ]
d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/connection.go#L811-L813
train
anacrolix/torrent
connection.go
updatePiecePriority
func (cn *connection) updatePiecePriority(piece pieceIndex) bool { tpp := cn.t.piecePriority(piece) if !cn.PeerHasPiece(piece) { tpp = PiecePriorityNone } if tpp == PiecePriorityNone { return cn.stopRequestingPiece(piece) } prio := cn.getPieceInclination()[piece] switch cn.t.requestStrategy { case 1: swit...
go
func (cn *connection) updatePiecePriority(piece pieceIndex) bool { tpp := cn.t.piecePriority(piece) if !cn.PeerHasPiece(piece) { tpp = PiecePriorityNone } if tpp == PiecePriorityNone { return cn.stopRequestingPiece(piece) } prio := cn.getPieceInclination()[piece] switch cn.t.requestStrategy { case 1: swit...
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// This is distinct from Torrent piece priority, which is the user's // preference. Connection piece priority is specific to a connection and is // used to pseudorandomly avoid connections always requesting the same pieces // and thus wasting effort.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/connection.go#L819-L843
train
anacrolix/torrent
connection.go
postHandshakeStats
func (cn *connection) postHandshakeStats(f func(*ConnStats)) { t := cn.t f(&t.stats) f(&t.cl.stats) }
go
func (cn *connection) postHandshakeStats(f func(*ConnStats)) { t := cn.t f(&t.stats) f(&t.cl.stats) }
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// After handshake, we know what Torrent and Client stats to include for a // connection.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/connection.go#L962-L966
train
anacrolix/torrent
connection.go
allStats
func (cn *connection) allStats(f func(*ConnStats)) { f(&cn.stats) if cn.reconciledHandshakeStats { cn.postHandshakeStats(f) } }
go
func (cn *connection) allStats(f func(*ConnStats)) { f(&cn.stats) if cn.reconciledHandshakeStats { cn.postHandshakeStats(f) } }
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// All ConnStats that include this connection. Some objects are not known // until the handshake is complete, after which it's expected to reconcile the // differences.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/connection.go#L971-L976
train
anacrolix/torrent
connection.go
useful
func (c *connection) useful() bool { t := c.t if c.closed.IsSet() { return false } if !t.haveInfo() { return c.supportsExtension("ut_metadata") } if t.seeding() && c.PeerInterested { return true } if c.peerHasWantedPieces() { return true } return false }
go
func (c *connection) useful() bool { t := c.t if c.closed.IsSet() { return false } if !t.haveInfo() { return c.supportsExtension("ut_metadata") } if t.seeding() && c.PeerInterested { return true } if c.peerHasWantedPieces() { return true } return false }
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// Returns whether the connection could be useful to us. We're seeding and // they want data, we don't have metainfo and they can provide it, etc.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/connection.go#L988-L1003
train
anacrolix/torrent
connection.go
setRW
func (cn *connection) setRW(rw io.ReadWriter) { cn.r = rw cn.w = rw }
go
func (cn *connection) setRW(rw io.ReadWriter) { cn.r = rw cn.w = rw }
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// Set both the Reader and Writer for the connection from a single ReadWriter.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/connection.go#L1253-L1256
train
anacrolix/torrent
connection.go
rw
func (cn *connection) rw() io.ReadWriter { return struct { io.Reader io.Writer }{cn.r, cn.w} }
go
func (cn *connection) rw() io.ReadWriter { return struct { io.Reader io.Writer }{cn.r, cn.w} }
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// Returns the Reader and Writer as a combined ReadWriter.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/connection.go#L1259-L1264
train
anacrolix/torrent
connection.go
upload
func (c *connection) upload(msg func(pp.Message) bool) bool { // Breaking or completing this loop means we don't want to upload to the // peer anymore, and we choke them. another: for c.uploadAllowed() { // We want to upload to the peer. if !c.Unchoke(msg) { return false } for r := range c.PeerRequests { ...
go
func (c *connection) upload(msg func(pp.Message) bool) bool { // Breaking or completing this loop means we don't want to upload to the // peer anymore, and we choke them. another: for c.uploadAllowed() { // We want to upload to the peer. if !c.Unchoke(msg) { return false } for r := range c.PeerRequests { ...
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// Also handles choking and unchoking of the remote peer.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/connection.go#L1400-L1448
train
anacrolix/torrent
iplist/iplist.go
Lookup
func (ipl *IPList) Lookup(ip net.IP) (r Range, ok bool) { if ipl == nil { return } // TODO: Perhaps all addresses should be converted to IPv6, if the future // of IP is to always be backwards compatible. But this will cost 4x the // memory for IPv4 addresses? v4 := ip.To4() if v4 != nil { r, ok = ipl.lookup(...
go
func (ipl *IPList) Lookup(ip net.IP) (r Range, ok bool) { if ipl == nil { return } // TODO: Perhaps all addresses should be converted to IPv6, if the future // of IP is to always be backwards compatible. But this will cost 4x the // memory for IPv4 addresses? v4 := ip.To4() if v4 != nil { r, ok = ipl.lookup(...
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// Return the range the given IP is in. ok if false if no range is found.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/iplist/iplist.go#L53-L78
train
anacrolix/torrent
iplist/iplist.go
lookup
func lookup( first func(i int) net.IP, full func(i int) Range, n int, ip net.IP, ) ( r Range, ok bool, ) { // Find the index of the first range for which the following range exceeds // it. i := sort.Search(n, func(i int) bool { if i+1 >= n { return true } return bytes.Compare(ip, first(i+1)) < 0 }) i...
go
func lookup( first func(i int) net.IP, full func(i int) Range, n int, ip net.IP, ) ( r Range, ok bool, ) { // Find the index of the first range for which the following range exceeds // it. i := sort.Search(n, func(i int) bool { if i+1 >= n { return true } return bytes.Compare(ip, first(i+1)) < 0 }) i...
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// Return a range that contains ip, or nil.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/iplist/iplist.go#L81-L103
train
anacrolix/torrent
iplist/iplist.go
lookup
func (ipl *IPList) lookup(ip net.IP) (Range, bool) { return lookup(func(i int) net.IP { return ipl.ranges[i].First }, func(i int) Range { return ipl.ranges[i] }, len(ipl.ranges), ip) }
go
func (ipl *IPList) lookup(ip net.IP) (Range, bool) { return lookup(func(i int) net.IP { return ipl.ranges[i].First }, func(i int) Range { return ipl.ranges[i] }, len(ipl.ranges), ip) }
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// Return the range the given IP is in. Returns nil if no range is found.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/iplist/iplist.go#L106-L112
train
anacrolix/torrent
iplist/iplist.go
NewFromReader
func NewFromReader(f io.Reader) (ret *IPList, err error) { var ranges []Range // There's a lot of similar descriptions, so we maintain a pool and reuse // them to reduce memory overhead. uniqStrs := make(map[string]string) scanner := bufio.NewScanner(f) lineNum := 1 for scanner.Scan() { r, ok, lineErr := Parse...
go
func NewFromReader(f io.Reader) (ret *IPList, err error) { var ranges []Range // There's a lot of similar descriptions, so we maintain a pool and reuse // them to reduce memory overhead. uniqStrs := make(map[string]string) scanner := bufio.NewScanner(f) lineNum := 1 for scanner.Scan() { r, ok, lineErr := Parse...
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// Creates an IPList from a line-delimited P2P Plaintext file.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/iplist/iplist.go#L155-L185
train
anacrolix/torrent
bencode/api.go
Unmarshal
func Unmarshal(data []byte, v interface{}) (err error) { buf := bytes.NewBuffer(data) e := Decoder{r: buf} err = e.Decode(v) if err == nil && buf.Len() != 0 { err = ErrUnusedTrailingBytes{buf.Len()} } return }
go
func Unmarshal(data []byte, v interface{}) (err error) { buf := bytes.NewBuffer(data) e := Decoder{r: buf} err = e.Decode(v) if err == nil && buf.Len() != 0 { err = ErrUnusedTrailingBytes{buf.Len()} } return }
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// Unmarshal the bencode value in the 'data' to a value pointed by the 'v' // pointer, return a non-nil error if any.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/bencode/api.go#L133-L141
train
anacrolix/torrent
reader.go
SetResponsive
func (r *reader) SetResponsive() { r.responsive = true r.t.cl.event.Broadcast() }
go
func (r *reader) SetResponsive() { r.responsive = true r.t.cl.event.Broadcast() }
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// Don't wait for pieces to complete and be verified. Read calls return as // soon as they can when the underlying chunks become available.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/reader.go#L54-L57
train
anacrolix/torrent
reader.go
SetReadahead
func (r *reader) SetReadahead(readahead int64) { r.mu.Lock() r.readahead = readahead r.mu.Unlock() r.t.cl.lock() defer r.t.cl.unlock() r.posChanged() }
go
func (r *reader) SetReadahead(readahead int64) { r.mu.Lock() r.readahead = readahead r.mu.Unlock() r.t.cl.lock() defer r.t.cl.unlock() r.posChanged() }
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// Configure the number of bytes ahead of a read that should also be // prioritized in preparation for further reads.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/reader.go#L67-L74
train
anacrolix/torrent
reader.go
available
func (r *reader) available(off, max int64) (ret int64) { off += r.offset for max > 0 { req, ok := r.t.offsetRequest(off) if !ok { break } if !r.t.haveChunk(req) { break } len1 := int64(req.Length) - (off - r.t.requestOffset(req)) max -= len1 ret += len1 off += len1 } // Ensure that ret hasn'...
go
func (r *reader) available(off, max int64) (ret int64) { off += r.offset for max > 0 { req, ok := r.t.offsetRequest(off) if !ok { break } if !r.t.haveChunk(req) { break } len1 := int64(req.Length) - (off - r.t.requestOffset(req)) max -= len1 ret += len1 off += len1 } // Ensure that ret hasn'...
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// How many bytes are available to read. Max is the most we could require.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/reader.go#L91-L111
train
anacrolix/torrent
reader.go
piecesUncached
func (r *reader) piecesUncached() (ret pieceRange) { ra := r.readahead if ra < 1 { // Needs to be at least 1, because [x, x) means we don't want // anything. ra = 1 } if ra > r.length-r.pos { ra = r.length - r.pos } ret.begin, ret.end = r.t.byteRegionPieces(r.torrentOffset(r.pos), ra) return }
go
func (r *reader) piecesUncached() (ret pieceRange) { ra := r.readahead if ra < 1 { // Needs to be at least 1, because [x, x) means we don't want // anything. ra = 1 } if ra > r.length-r.pos { ra = r.length - r.pos } ret.begin, ret.end = r.t.byteRegionPieces(r.torrentOffset(r.pos), ra) return }
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// Calculates the pieces this reader wants downloaded, ignoring the cached // value at r.pieces.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/reader.go#L121-L133
train
anacrolix/torrent
reader.go
waitAvailable
func (r *reader) waitAvailable(pos, wanted int64, ctxErr *error) (avail int64) { r.t.cl.lock() defer r.t.cl.unlock() for !r.readable(pos) && *ctxErr == nil { r.waitReadable(pos) } return r.available(pos, wanted) }
go
func (r *reader) waitAvailable(pos, wanted int64, ctxErr *error) (avail int64) { r.t.cl.lock() defer r.t.cl.unlock() for !r.readable(pos) && *ctxErr == nil { r.waitReadable(pos) } return r.available(pos, wanted) }
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// Wait until some data should be available to read. Tickles the client if it // isn't. Returns how much should be readable without blocking.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/reader.go#L184-L191
train
anacrolix/torrent
reader.go
readOnceAt
func (r *reader) readOnceAt(b []byte, pos int64, ctxErr *error) (n int, err error) { if pos >= r.length { err = io.EOF return } for { avail := r.waitAvailable(pos, int64(len(b)), ctxErr) if avail == 0 { if r.t.closed.IsSet() { err = errors.New("torrent closed") return } if *ctxErr != nil { ...
go
func (r *reader) readOnceAt(b []byte, pos int64, ctxErr *error) (n int, err error) { if pos >= r.length { err = io.EOF return } for { avail := r.waitAvailable(pos, int64(len(b)), ctxErr) if avail == 0 { if r.t.closed.IsSet() { err = errors.New("torrent closed") return } if *ctxErr != nil { ...
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// Performs at most one successful read to torrent storage.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/reader.go#L198-L234
train
anacrolix/torrent
tracker/udp.go
write
func (c *udpAnnounce) write(h *RequestHeader, body interface{}, trailer []byte) (err error) { var buf bytes.Buffer err = binary.Write(&buf, binary.BigEndian, h) if err != nil { panic(err) } if body != nil { err = binary.Write(&buf, binary.BigEndian, body) if err != nil { panic(err) } } _, err = buf.Wr...
go
func (c *udpAnnounce) write(h *RequestHeader, body interface{}, trailer []byte) (err error) { var buf bytes.Buffer err = binary.Write(&buf, binary.BigEndian, h) if err != nil { panic(err) } if body != nil { err = binary.Write(&buf, binary.BigEndian, body) if err != nil { panic(err) } } _, err = buf.Wr...
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// body is the binary serializable request body. trailer is optional data // following it, such as for BEP 41.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/tracker/udp.go#L156-L180
train
anacrolix/torrent
tracker/udp.go
request
func (c *udpAnnounce) request(action Action, args interface{}, options []byte) (*bytes.Buffer, error) { tid := newTransactionId() if err := errors.Wrap( c.write( &RequestHeader{ ConnectionId: c.connectionId, Action: action, TransactionId: tid, }, args, options), "writing request", ); er...
go
func (c *udpAnnounce) request(action Action, args interface{}, options []byte) (*bytes.Buffer, error) { tid := newTransactionId() if err := errors.Wrap( c.write( &RequestHeader{ ConnectionId: c.connectionId, Action: action, TransactionId: tid, }, args, options), "writing request", ); er...
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// args is the binary serializable request body. trailer is optional data // following it, such as for BEP 41.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/tracker/udp.go#L192-L251
train
anacrolix/torrent
misc.go
metadataPieceSize
func metadataPieceSize(totalSize int, piece int) int { ret := totalSize - piece*(1<<14) if ret > 1<<14 { ret = 1 << 14 } return ret }
go
func metadataPieceSize(totalSize int, piece int) int { ret := totalSize - piece*(1<<14) if ret > 1<<14 { ret = 1 << 14 } return ret }
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// The size in bytes of a metadata extension piece.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/misc.go#L47-L53
train
anacrolix/torrent
misc.go
torrentOffsetRequest
func torrentOffsetRequest(torrentLength, pieceSize, chunkSize, offset int64) ( r request, ok bool) { if offset < 0 || offset >= torrentLength { return } r.Index = pp.Integer(offset / pieceSize) r.Begin = pp.Integer(offset % pieceSize / chunkSize * chunkSize) r.Length = pp.Integer(chunkSize) pieceLeft := pp.Int...
go
func torrentOffsetRequest(torrentLength, pieceSize, chunkSize, offset int64) ( r request, ok bool) { if offset < 0 || offset >= torrentLength { return } r.Index = pp.Integer(offset / pieceSize) r.Begin = pp.Integer(offset % pieceSize / chunkSize * chunkSize) r.Length = pp.Integer(chunkSize) pieceLeft := pp.Int...
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// Return the request that would include the given offset into the torrent data.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/misc.go#L56-L74
train
anacrolix/torrent
peer_protocol/handshake.go
Handshake
func Handshake(sock io.ReadWriter, ih *metainfo.Hash, peerID [20]byte, extensions PeerExtensionBits) (res HandshakeResult, ok bool, err error) { // Bytes to be sent to the peer. Should never block the sender. postCh := make(chan []byte, 4) // A single error value sent when the writer completes. writeDone := make(ch...
go
func Handshake(sock io.ReadWriter, ih *metainfo.Hash, peerID [20]byte, extensions PeerExtensionBits) (res HandshakeResult, ok bool, err error) { // Bytes to be sent to the peer. Should never block the sender. postCh := make(chan []byte, 4) // A single error value sent when the writer completes. writeDone := make(ch...
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// ih is nil if we expect the peer to declare the InfoHash, such as when the // peer initiated the connection. Returns ok if the Handshake was successful, // and err if there was an unexpected condition other than the peer simply // abandoning the Handshake.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/peer_protocol/handshake.go#L76-L137
train
anacrolix/torrent
bencode/decode.go
readUntil
func (d *Decoder) readUntil(sep byte) { for { b := d.readByte() if b == sep { return } d.buf.WriteByte(b) } }
go
func (d *Decoder) readUntil(sep byte) { for { b := d.readByte() if b == sep { return } d.buf.WriteByte(b) } }
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// reads data writing it to 'd.buf' until 'sep' byte is encountered, 'sep' byte // is consumed, but not included into the 'd.buf'
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/bencode/decode.go#L78-L86
train
anacrolix/torrent
bencode/decode.go
parseInt
func (d *Decoder) parseInt(v reflect.Value) { start := d.Offset - 1 d.readUntil('e') if d.buf.Len() == 0 { panic(&SyntaxError{ Offset: start, What: errors.New("empty integer value"), }) } s := bytesAsString(d.buf.Bytes()) switch v.Kind() { case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int3...
go
func (d *Decoder) parseInt(v reflect.Value) { start := d.Offset - 1 d.readUntil('e') if d.buf.Len() == 0 { panic(&SyntaxError{ Offset: start, What: errors.New("empty integer value"), }) } s := bytesAsString(d.buf.Bytes()) switch v.Kind() { case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int3...
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// called when 'i' was consumed
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/bencode/decode.go#L105-L149
train
anacrolix/torrent
bencode/decode.go
getDictField
func getDictField(dict reflect.Value, key string) dictField { // get valuev as a map value or as a struct field switch dict.Kind() { case reflect.Map: value := reflect.New(dict.Type().Elem()).Elem() return dictField{ Value: value, Ok: true, Set: func() { if dict.IsNil() { dict.Set(reflect.Ma...
go
func getDictField(dict reflect.Value, key string) dictField { // get valuev as a map value or as a struct field switch dict.Kind() { case reflect.Map: value := reflect.New(dict.Type().Elem()).Elem() return dictField{ Value: value, Ok: true, Set: func() { if dict.IsNil() { dict.Set(reflect.Ma...
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// Returns specifics for parsing a dict field value.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/bencode/decode.go#L217-L254
train
anacrolix/torrent
bencode/decode.go
raiseUnknownValueType
func (d *Decoder) raiseUnknownValueType(b byte, offset int64) { panic(&SyntaxError{ Offset: offset, What: fmt.Errorf("unknown value type %+q", b), }) }
go
func (d *Decoder) raiseUnknownValueType(b byte, offset int64) { panic(&SyntaxError{ Offset: offset, What: fmt.Errorf("unknown value type %+q", b), }) }
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// An unknown bencode type character was encountered.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/bencode/decode.go#L520-L525
train
anacrolix/torrent
tracker_scraper.go
announce
func (me *trackerScraper) announce() (ret trackerAnnounceResult) { defer func() { ret.Completed = time.Now() }() ret.Interval = 5 * time.Minute ip, err := me.getIp() if err != nil { ret.Err = fmt.Errorf("error getting ip: %s", err) return } me.t.cl.lock() req := me.t.announceRequest() me.t.cl.unlock() r...
go
func (me *trackerScraper) announce() (ret trackerAnnounceResult) { defer func() { ret.Completed = time.Now() }() ret.Interval = 5 * time.Minute ip, err := me.getIp() if err != nil { ret.Err = fmt.Errorf("error getting ip: %s", err) return } me.t.cl.lock() req := me.t.announceRequest() me.t.cl.unlock() r...
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// Return how long to wait before trying again. For most errors, we return 5 // minutes, a relatively quick turn around for DNS changes.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/tracker_scraper.go#L99-L131
train
anacrolix/torrent
iplist/cidr.go
IPNetLast
func IPNetLast(in *net.IPNet) (last net.IP) { n := len(in.IP) if n != len(in.Mask) { panic("wat") } last = make(net.IP, n) for i := 0; i < n; i++ { last[i] = in.IP[i] | ^in.Mask[i] } return }
go
func IPNetLast(in *net.IPNet) (last net.IP) { n := len(in.IP) if n != len(in.Mask) { panic("wat") } last = make(net.IP, n) for i := 0; i < n; i++ { last[i] = in.IP[i] | ^in.Mask[i] } return }
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// Returns the last, inclusive IP in a net.IPNet.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/iplist/cidr.go#L31-L41
train
anacrolix/torrent
bencode/encode.go
reflectMarshaler
func (e *Encoder) reflectMarshaler(v reflect.Value) bool { if !v.Type().Implements(marshalerType) { if v.Kind() != reflect.Ptr && v.CanAddr() && v.Addr().Type().Implements(marshalerType) { v = v.Addr() } else { return false } } m := v.Interface().(Marshaler) data, err := m.MarshalBencode() if err != ni...
go
func (e *Encoder) reflectMarshaler(v reflect.Value) bool { if !v.Type().Implements(marshalerType) { if v.Kind() != reflect.Ptr && v.CanAddr() && v.Addr().Type().Implements(marshalerType) { v = v.Addr() } else { return false } } m := v.Interface().(Marshaler) data, err := m.MarshalBencode() if err != ni...
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// Returns true if the value implements Marshaler interface and marshaling was // done successfully.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/bencode/encode.go#L82-L97
train
anacrolix/torrent
file.go
DisplayPath
func (f *File) DisplayPath() string { fip := f.FileInfo().Path if len(fip) == 0 { return f.t.info.Name } return strings.Join(fip, "/") }
go
func (f *File) DisplayPath() string { fip := f.FileInfo().Path if len(fip) == 0 { return f.t.info.Name } return strings.Join(fip, "/") }
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// The relative file path for a multi-file torrent, and the torrent name for a // single-file torrent.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/file.go#L45-L52
train
anacrolix/torrent
file.go
State
func (f *File) State() (ret []FilePieceState) { f.t.cl.rLock() defer f.t.cl.rUnlock() pieceSize := int64(f.t.usualPieceSize()) off := f.offset % pieceSize remaining := f.length for i := pieceIndex(f.offset / pieceSize); ; i++ { if remaining == 0 { break } len1 := pieceSize - off if len1 > remaining { ...
go
func (f *File) State() (ret []FilePieceState) { f.t.cl.rLock() defer f.t.cl.rUnlock() pieceSize := int64(f.t.usualPieceSize()) off := f.offset % pieceSize remaining := f.length for i := pieceIndex(f.offset / pieceSize); ; i++ { if remaining == 0 { break } len1 := pieceSize - off if len1 > remaining { ...
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// Returns the state of pieces in this file.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/file.go#L61-L81
train
anacrolix/torrent
file.go
SetPriority
func (f *File) SetPriority(prio piecePriority) { f.t.cl.lock() defer f.t.cl.unlock() if prio == f.prio { return } f.prio = prio f.t.updatePiecePriorities(f.firstPieceIndex(), f.endPieceIndex()) }
go
func (f *File) SetPriority(prio piecePriority) { f.t.cl.lock() defer f.t.cl.unlock() if prio == f.prio { return } f.prio = prio f.t.updatePiecePriorities(f.firstPieceIndex(), f.endPieceIndex()) }
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// Sets the minimum priority for pieces in the File.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/file.go#L112-L120
train
anacrolix/torrent
file.go
Priority
func (f *File) Priority() piecePriority { f.t.cl.lock() defer f.t.cl.unlock() return f.prio }
go
func (f *File) Priority() piecePriority { f.t.cl.lock() defer f.t.cl.unlock() return f.prio }
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// Returns the priority per File.SetPriority.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/file.go#L123-L127
train
anacrolix/torrent
client.go
WriteStatus
func (cl *Client) WriteStatus(_w io.Writer) { cl.rLock() defer cl.rUnlock() w := bufio.NewWriter(_w) defer w.Flush() fmt.Fprintf(w, "Listen port: %d\n", cl.LocalPort()) fmt.Fprintf(w, "Peer ID: %+q\n", cl.PeerID()) fmt.Fprintf(w, "Announce key: %x\n", cl.announceKey()) fmt.Fprintf(w, "Banned IPs: %d\n", len(cl....
go
func (cl *Client) WriteStatus(_w io.Writer) { cl.rLock() defer cl.rUnlock() w := bufio.NewWriter(_w) defer w.Flush() fmt.Fprintf(w, "Listen port: %d\n", cl.LocalPort()) fmt.Fprintf(w, "Peer ID: %+q\n", cl.PeerID()) fmt.Fprintf(w, "Announce key: %x\n", cl.announceKey()) fmt.Fprintf(w, "Banned IPs: %d\n", len(cl....
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// Writes out a human readable status of the client, such as for writing to a // HTTP status page.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/client.go#L118-L152
train
anacrolix/torrent
client.go
Close
func (cl *Client) Close() { cl.lock() defer cl.unlock() cl.closed.Set() cl.eachDhtServer(func(s *dht.Server) { s.Close() }) cl.closeSockets() for _, t := range cl.torrents { t.close() } for _, f := range cl.onClose { f() } cl.event.Broadcast() }
go
func (cl *Client) Close() { cl.lock() defer cl.unlock() cl.closed.Set() cl.eachDhtServer(func(s *dht.Server) { s.Close() }) cl.closeSockets() for _, t := range cl.torrents { t.close() } for _, f := range cl.onClose { f() } cl.event.Broadcast() }
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// Stops the client. All connections to peers are closed and all activity will // come to a halt.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/client.go#L352-L365
train
anacrolix/torrent
client.go
Torrent
func (cl *Client) Torrent(ih metainfo.Hash) (t *Torrent, ok bool) { cl.lock() defer cl.unlock() t, ok = cl.torrents[ih] return }
go
func (cl *Client) Torrent(ih metainfo.Hash) (t *Torrent, ok bool) { cl.lock() defer cl.unlock() t, ok = cl.torrents[ih] return }
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// Returns a handle to the given torrent, if it's present in the client.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/client.go#L465-L470
train
anacrolix/torrent
client.go
dopplegangerAddr
func (cl *Client) dopplegangerAddr(addr string) bool { _, ok := cl.dopplegangerAddrs[addr] return ok }
go
func (cl *Client) dopplegangerAddr(addr string) bool { _, ok := cl.dopplegangerAddrs[addr] return ok }
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// Returns whether an address is known to connect to a client with our own ID.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/client.go#L498-L501
train
anacrolix/torrent
client.go
dialFirst
func (cl *Client) dialFirst(ctx context.Context, addr string) dialResult { ctx, cancel := context.WithCancel(ctx) // As soon as we return one connection, cancel the others. defer cancel() left := 0 resCh := make(chan dialResult, left) func() { cl.lock() defer cl.unlock() cl.eachListener(func(s socket) bool ...
go
func (cl *Client) dialFirst(ctx context.Context, addr string) dialResult { ctx, cancel := context.WithCancel(ctx) // As soon as we return one connection, cancel the others. defer cancel() left := 0 resCh := make(chan dialResult, left) func() { cl.lock() defer cl.unlock() cl.eachListener(func(s socket) bool ...
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// Returns a connection over UTP or TCP, whichever is first to connect.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/client.go#L504-L583
train
anacrolix/torrent
client.go
outgoingConnection
func (cl *Client) outgoingConnection(t *Torrent, addr IpPort, ps peerSource) { cl.dialRateLimiter.Wait(context.Background()) c, err := cl.establishOutgoingConn(t, addr) cl.lock() defer cl.unlock() // Don't release lock between here and addConnection, unless it's for // failure. cl.noLongerHalfOpen(t, addr.String...
go
func (cl *Client) outgoingConnection(t *Torrent, addr IpPort, ps peerSource) { cl.dialRateLimiter.Wait(context.Background()) c, err := cl.establishOutgoingConn(t, addr) cl.lock() defer cl.unlock() // Don't release lock between here and addConnection, unless it's for // failure. cl.noLongerHalfOpen(t, addr.String...
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// Called to dial out and run a connection. The addr we're given is already // considered half-open.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/client.go#L672-L692
train
anacrolix/torrent
client.go
forSkeys
func (cl *Client) forSkeys(f func([]byte) bool) { cl.lock() defer cl.unlock() for ih := range cl.torrents { if !f(ih[:]) { break } } }
go
func (cl *Client) forSkeys(f func([]byte) bool) { cl.lock() defer cl.unlock() for ih := range cl.torrents { if !f(ih[:]) { break } } }
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// Calls f with any secret keys.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/client.go#L734-L742
train
anacrolix/torrent
client.go
receiveHandshakes
func (cl *Client) receiveHandshakes(c *connection) (t *Torrent, err error) { defer perf.ScopeTimerErr(&err)() var rw io.ReadWriter rw, c.headerEncrypted, c.cryptoMethod, err = handleEncryption(c.rw(), cl.forSkeys, cl.config.EncryptionPolicy) c.setRW(rw) if err == nil || err == mse.ErrNoSecretKeyMatch { if c.head...
go
func (cl *Client) receiveHandshakes(c *connection) (t *Torrent, err error) { defer perf.ScopeTimerErr(&err)() var rw io.ReadWriter rw, c.headerEncrypted, c.cryptoMethod, err = handleEncryption(c.rw(), cl.forSkeys, cl.config.EncryptionPolicy) c.setRW(rw) if err == nil || err == mse.ErrNoSecretKeyMatch { if c.head...
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// Do encryption and bittorrent handshakes as receiver.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/client.go#L745-L781
train
anacrolix/torrent
client.go
connBTHandshake
func (cl *Client) connBTHandshake(c *connection, ih *metainfo.Hash) (ret metainfo.Hash, ok bool, err error) { res, ok, err := pp.Handshake(c.rw(), ih, cl.peerID, cl.extensionBytes) if err != nil || !ok { return } ret = res.Hash c.PeerExtensionBytes = res.PeerExtensionBits c.PeerID = res.PeerID c.completedHands...
go
func (cl *Client) connBTHandshake(c *connection, ih *metainfo.Hash) (ret metainfo.Hash, ok bool, err error) { res, ok, err := pp.Handshake(c.rw(), ih, cl.peerID, cl.extensionBytes) if err != nil || !ok { return } ret = res.Hash c.PeerExtensionBytes = res.PeerExtensionBits c.PeerID = res.PeerID c.completedHands...
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// Returns !ok if handshake failed for valid reasons.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/client.go#L784-L794
train
anacrolix/torrent
client.go
sendInitialMessages
func (cl *Client) sendInitialMessages(conn *connection, torrent *Torrent) { if conn.PeerExtensionBytes.SupportsExtended() && cl.extensionBytes.SupportsExtended() { conn.Post(pp.Message{ Type: pp.Extended, ExtendedID: pp.HandshakeExtendedID, ExtendedPayload: func() []byte { msg := pp.ExtendedHandsh...
go
func (cl *Client) sendInitialMessages(conn *connection, torrent *Torrent) { if conn.PeerExtensionBytes.SupportsExtended() && cl.extensionBytes.SupportsExtended() { conn.Post(pp.Message{ Type: pp.Extended, ExtendedID: pp.HandshakeExtendedID, ExtendedPayload: func() []byte { msg := pp.ExtendedHandsh...
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// See the order given in Transmission's tr_peerMsgsNew.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/client.go#L864-L912
train
anacrolix/torrent
client.go
gotMetadataExtensionMsg
func (cl *Client) gotMetadataExtensionMsg(payload []byte, t *Torrent, c *connection) error { var d map[string]int err := bencode.Unmarshal(payload, &d) if _, ok := err.(bencode.ErrUnusedTrailingBytes); ok { } else if err != nil { return fmt.Errorf("error unmarshalling bencode: %s", err) } msgType, ok := d["msg_...
go
func (cl *Client) gotMetadataExtensionMsg(payload []byte, t *Torrent, c *connection) error { var d map[string]int err := bencode.Unmarshal(payload, &d) if _, ok := err.(bencode.ErrUnusedTrailingBytes); ok { } else if err != nil { return fmt.Errorf("error unmarshalling bencode: %s", err) } msgType, ok := d["msg_...
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// Process incoming ut_metadata message.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/client.go#L929-L968
train
anacrolix/torrent
client.go
newTorrent
func (cl *Client) newTorrent(ih metainfo.Hash, specStorage storage.ClientImpl) (t *Torrent) { // use provided storage, if provided storageClient := cl.defaultStorage if specStorage != nil { storageClient = storage.NewClient(specStorage) } t = &Torrent{ cl: cl, infoHash: ih, peers: prioritizedPeers{ ...
go
func (cl *Client) newTorrent(ih metainfo.Hash, specStorage storage.ClientImpl) (t *Torrent) { // use provided storage, if provided storageClient := cl.defaultStorage if specStorage != nil { storageClient = storage.NewClient(specStorage) } t = &Torrent{ cl: cl, infoHash: ih, peers: prioritizedPeers{ ...
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// Return a Torrent ready for insertion into a Client.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/client.go#L987-L1021
train
anacrolix/torrent
client.go
AddTorrentInfoHashWithStorage
func (cl *Client) AddTorrentInfoHashWithStorage(infoHash metainfo.Hash, specStorage storage.ClientImpl) (t *Torrent, new bool) { cl.lock() defer cl.unlock() t, ok := cl.torrents[infoHash] if ok { return } new = true t = cl.newTorrent(infoHash, specStorage) cl.eachDhtServer(func(s *dht.Server) { go t.dhtAnn...
go
func (cl *Client) AddTorrentInfoHashWithStorage(infoHash metainfo.Hash, specStorage storage.ClientImpl) (t *Torrent, new bool) { cl.lock() defer cl.unlock() t, ok := cl.torrents[infoHash] if ok { return } new = true t = cl.newTorrent(infoHash, specStorage) cl.eachDhtServer(func(s *dht.Server) { go t.dhtAnn...
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// Adds a torrent by InfoHash with a custom Storage implementation. // If the torrent already exists then this Storage is ignored and the // existing torrent returned with `new` set to `false`
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/client.go#L1038-L1057
train
anacrolix/torrent
client.go
WaitAll
func (cl *Client) WaitAll() bool { cl.lock() defer cl.unlock() for !cl.allTorrentsCompleted() { if cl.closed.IsSet() { return false } cl.event.Wait() } return true }
go
func (cl *Client) WaitAll() bool { cl.lock() defer cl.unlock() for !cl.allTorrentsCompleted() { if cl.closed.IsSet() { return false } cl.event.Wait() } return true }
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// Returns true when all torrents are completely downloaded and false if the // client is stopped before that.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/client.go#L1114-L1124
train
anacrolix/torrent
client.go
Torrents
func (cl *Client) Torrents() []*Torrent { cl.lock() defer cl.unlock() return cl.torrentsAsSlice() }
go
func (cl *Client) Torrents() []*Torrent { cl.lock() defer cl.unlock() return cl.torrentsAsSlice() }
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// Returns handles to all the torrents loaded in the Client.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/client.go#L1127-L1131
train
anacrolix/torrent
client.go
publicAddr
func (cl *Client) publicAddr(peer net.IP) IpPort { return IpPort{cl.publicIp(peer), uint16(cl.incomingPeerPort())} }
go
func (cl *Client) publicAddr(peer net.IP) IpPort { return IpPort{cl.publicIp(peer), uint16(cl.incomingPeerPort())} }
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// Our IP as a peer should see it.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/client.go#L1277-L1279
train
anacrolix/torrent
mse/mse.go
postY
func (h *handshake) postY(x *big.Int) error { var y big.Int y.Exp(&g, x, &p) return h.postWrite(paddedLeft(y.Bytes(), 96)) }
go
func (h *handshake) postY(x *big.Int) error { var y big.Int y.Exp(&g, x, &p) return h.postWrite(paddedLeft(y.Bytes(), 96)) }
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// Calculate, and send Y, our public key.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/mse/mse.go#L175-L179
train
anacrolix/torrent
mse/mse.go
suffixMatchLen
func suffixMatchLen(a, b []byte) int { if len(b) > len(a) { b = b[:len(a)] } // i is how much of b to try to match for i := len(b); i > 0; i-- { // j is how many chars we've compared j := 0 for ; j < i; j++ { if b[i-1-j] != a[len(a)-1-j] { goto shorter } } return j shorter: } return 0 }
go
func suffixMatchLen(a, b []byte) int { if len(b) > len(a) { b = b[:len(a)] } // i is how much of b to try to match for i := len(b); i > 0; i-- { // j is how many chars we've compared j := 0 for ; j < i; j++ { if b[i-1-j] != a[len(a)-1-j] { goto shorter } } return j shorter: } return 0 }
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// Looking for b at the end of a.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/mse/mse.go#L322-L339
train
anacrolix/torrent
mse/mse.go
readUntil
func readUntil(r io.Reader, b []byte) error { b1 := make([]byte, len(b)) i := 0 for { _, err := io.ReadFull(r, b1[i:]) if err != nil { return err } i = suffixMatchLen(b1, b) if i == len(b) { break } if copy(b1, b1[len(b1)-i:]) != i { panic("wat") } } return nil }
go
func readUntil(r io.Reader, b []byte) error { b1 := make([]byte, len(b)) i := 0 for { _, err := io.ReadFull(r, b1[i:]) if err != nil { return err } i = suffixMatchLen(b1, b) if i == len(b) { break } if copy(b1, b1[len(b1)-i:]) != i { panic("wat") } } return nil }
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// Reads from r until b has been seen. Keeps the minimum amount of data in // memory.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/mse/mse.go#L343-L360
train
anacrolix/torrent
tracker/peer.go
fromDictInterface
func (p *Peer) fromDictInterface(d map[string]interface{}) { p.IP = net.ParseIP(d["ip"].(string)) if _, ok := d["peer id"]; ok { p.ID = []byte(d["peer id"].(string)) } p.Port = int(d["port"].(int64)) }
go
func (p *Peer) fromDictInterface(d map[string]interface{}) { p.IP = net.ParseIP(d["ip"].(string)) if _, ok := d["peer id"]; ok { p.ID = []byte(d["peer id"].(string)) } p.Port = int(d["port"].(int64)) }
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// Set from the non-compact form in BEP 3.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/tracker/peer.go#L16-L22
train
anacrolix/torrent
metainfo/announcelist.go
OverridesAnnounce
func (al AnnounceList) OverridesAnnounce(announce string) bool { for _, tier := range al { for _, url := range tier { if url != "" || announce == "" { return true } } } return false }
go
func (al AnnounceList) OverridesAnnounce(announce string) bool { for _, tier := range al { for _, url := range tier { if url != "" || announce == "" { return true } } } return false }
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// Whether the AnnounceList should be preferred over a single URL announce.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/metainfo/announcelist.go#L6-L15
train
anacrolix/torrent
prioritized_peers.go
Add
func (me *prioritizedPeers) Add(p Peer) bool { return me.om.ReplaceOrInsert(prioritizedPeersItem{me.getPrio(p), p}) != nil }
go
func (me *prioritizedPeers) Add(p Peer) bool { return me.om.ReplaceOrInsert(prioritizedPeersItem{me.getPrio(p), p}) != nil }
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// Returns true if a peer is replaced.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/prioritized_peers.go#L33-L35
train
anacrolix/torrent
storage/file.go
defaultPathMaker
func defaultPathMaker(baseDir string, info *metainfo.Info, infoHash metainfo.Hash) string { return baseDir }
go
func defaultPathMaker(baseDir string, info *metainfo.Info, infoHash metainfo.Hash) string { return baseDir }
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// The Default path maker just returns the current path
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/storage/file.go#L21-L23
train
anacrolix/torrent
storage/file.go
NewFileWithCustomPathMaker
func NewFileWithCustomPathMaker(baseDir string, pathMaker func(baseDir string, info *metainfo.Info, infoHash metainfo.Hash) string) ClientImpl { return newFileWithCustomPathMakerAndCompletion(baseDir, pathMaker, pieceCompletionForDir(baseDir)) }
go
func NewFileWithCustomPathMaker(baseDir string, pathMaker func(baseDir string, info *metainfo.Info, infoHash metainfo.Hash) string) ClientImpl { return newFileWithCustomPathMakerAndCompletion(baseDir, pathMaker, pieceCompletionForDir(baseDir)) }
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// Allows passing a function to determine the path for storing torrent data
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/storage/file.go#L44-L46
train
anacrolix/torrent
storage/file.go
CreateNativeZeroLengthFiles
func CreateNativeZeroLengthFiles(info *metainfo.Info, dir string) (err error) { for _, fi := range info.UpvertedFiles() { if fi.Length != 0 { continue } name := filepath.Join(append([]string{dir, info.Name}, fi.Path...)...) os.MkdirAll(filepath.Dir(name), 0777) var f io.Closer f, err = os.Create(name) ...
go
func CreateNativeZeroLengthFiles(info *metainfo.Info, dir string) (err error) { for _, fi := range info.UpvertedFiles() { if fi.Length != 0 { continue } name := filepath.Join(append([]string{dir, info.Name}, fi.Path...)...) os.MkdirAll(filepath.Dir(name), 0777) var f io.Closer f, err = os.Create(name) ...
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// Creates natives files for any zero-length file entries in the info. This is // a helper for file-based storages, which don't address or write to zero- // length files because they have no corresponding pieces.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/storage/file.go#L103-L118
train
anacrolix/torrent
storage/file.go
readFileAt
func (fst *fileTorrentImplIO) readFileAt(fi metainfo.FileInfo, b []byte, off int64) (n int, err error) { f, err := os.Open(fst.fts.fileInfoName(fi)) if os.IsNotExist(err) { // File missing is treated the same as a short file. err = io.EOF return } if err != nil { return } defer f.Close() // Limit the rea...
go
func (fst *fileTorrentImplIO) readFileAt(fi metainfo.FileInfo, b []byte, off int64) (n int, err error) { f, err := os.Open(fst.fts.fileInfoName(fi)) if os.IsNotExist(err) { // File missing is treated the same as a short file. err = io.EOF return } if err != nil { return } defer f.Close() // Limit the rea...
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// Returns EOF on short or missing file.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/storage/file.go#L126-L152
train
anacrolix/torrent
storage/file.go
ReadAt
func (fst fileTorrentImplIO) ReadAt(b []byte, off int64) (n int, err error) { for _, fi := range fst.fts.info.UpvertedFiles() { for off < fi.Length { n1, err1 := fst.readFileAt(fi, b, off) n += n1 off += int64(n1) b = b[n1:] if len(b) == 0 { // Got what we need. return } if n1 != 0 { ...
go
func (fst fileTorrentImplIO) ReadAt(b []byte, off int64) (n int, err error) { for _, fi := range fst.fts.info.UpvertedFiles() { for off < fi.Length { n1, err1 := fst.readFileAt(fi, b, off) n += n1 off += int64(n1) b = b[n1:] if len(b) == 0 { // Got what we need. return } if n1 != 0 { ...
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// Only returns EOF at the end of the torrent. Premature EOF is ErrUnexpectedEOF.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/storage/file.go#L155-L181
train
anacrolix/torrent
t.go
Info
func (t *Torrent) Info() *metainfo.Info { t.cl.lock() defer t.cl.unlock() return t.info }
go
func (t *Torrent) Info() *metainfo.Info { t.cl.lock() defer t.cl.unlock() return t.info }
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// Returns the metainfo info dictionary, or nil if it's not yet available.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/t.go#L26-L30
train
anacrolix/torrent
t.go
NewReader
func (t *Torrent) NewReader() Reader { r := reader{ mu: t.cl.locker(), t: t, readahead: 5 * 1024 * 1024, length: *t.length, } t.addReader(&r) return &r }
go
func (t *Torrent) NewReader() Reader { r := reader{ mu: t.cl.locker(), t: t, readahead: 5 * 1024 * 1024, length: *t.length, } t.addReader(&r) return &r }
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// Returns a Reader bound to the torrent's data. All read calls block until // the data requested is actually available.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/t.go#L34-L43
train
anacrolix/torrent
t.go
PieceStateRuns
func (t *Torrent) PieceStateRuns() []PieceStateRun { t.cl.rLock() defer t.cl.rUnlock() return t.pieceStateRuns() }
go
func (t *Torrent) PieceStateRuns() []PieceStateRun { t.cl.rLock() defer t.cl.rUnlock() return t.pieceStateRuns() }
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// Returns the state of pieces of the torrent. They are grouped into runs of // same state. The sum of the state run lengths is the number of pieces // in the torrent.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/t.go#L48-L52
train
anacrolix/torrent
t.go
PieceBytesMissing
func (t *Torrent) PieceBytesMissing(piece int) int64 { t.cl.lock() defer t.cl.unlock() return int64(t.pieces[piece].bytesLeft()) }
go
func (t *Torrent) PieceBytesMissing(piece int) int64 { t.cl.lock() defer t.cl.unlock() return int64(t.pieces[piece].bytesLeft()) }
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// Get missing bytes count for specific piece.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/t.go#L67-L72
train
anacrolix/torrent
t.go
Drop
func (t *Torrent) Drop() { t.cl.lock() t.cl.dropTorrent(t.infoHash) t.cl.unlock() }
go
func (t *Torrent) Drop() { t.cl.lock() t.cl.dropTorrent(t.infoHash) t.cl.unlock() }
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// Drop the torrent from the client, and close it. It's always safe to do // this. No data corruption can, or should occur to either the torrent's data, // or connected peers.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/t.go#L77-L81
train
anacrolix/torrent
t.go
BytesCompleted
func (t *Torrent) BytesCompleted() int64 { t.cl.rLock() defer t.cl.rUnlock() return t.bytesCompleted() }
go
func (t *Torrent) BytesCompleted() int64 { t.cl.rLock() defer t.cl.rUnlock() return t.bytesCompleted() }
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// Number of bytes of the entire torrent we have completed. This is the sum of // completed pieces, and dirtied chunks of incomplete pieces. Do not use this // for download rate, as it can go down when pieces are lost or fail checks. // Sample Torrent.Stats.DataBytesRead for actual file data download rate.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/t.go#L87-L91
train
anacrolix/torrent
t.go
Seeding
func (t *Torrent) Seeding() bool { t.cl.lock() defer t.cl.unlock() return t.seeding() }
go
func (t *Torrent) Seeding() bool { t.cl.lock() defer t.cl.unlock() return t.seeding() }
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// Returns true if the torrent is currently being seeded. This occurs when the // client is willing to upload without wanting anything in return.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/t.go#L101-L105
train
anacrolix/torrent
t.go
SetDisplayName
func (t *Torrent) SetDisplayName(dn string) { t.nameMu.Lock() defer t.nameMu.Unlock() if t.haveInfo() { return } t.displayName = dn }
go
func (t *Torrent) SetDisplayName(dn string) { t.nameMu.Lock() defer t.nameMu.Unlock() if t.haveInfo() { return } t.displayName = dn }
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// Clobbers the torrent display name. The display name is used as the torrent // name if the metainfo is not available.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/t.go#L109-L116
train
anacrolix/torrent
t.go
Metainfo
func (t *Torrent) Metainfo() metainfo.MetaInfo { t.cl.lock() defer t.cl.unlock() return t.newMetaInfo() }
go
func (t *Torrent) Metainfo() metainfo.MetaInfo { t.cl.lock() defer t.cl.unlock() return t.newMetaInfo() }
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// Returns a run-time generated metainfo for the torrent that includes the // info bytes and announce-list as currently known to the client.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/t.go#L132-L136
train
anacrolix/torrent
t.go
DownloadPieces
func (t *Torrent) DownloadPieces(begin, end pieceIndex) { t.cl.lock() defer t.cl.unlock() t.downloadPiecesLocked(begin, end) }
go
func (t *Torrent) DownloadPieces(begin, end pieceIndex) { t.cl.lock() defer t.cl.unlock() t.downloadPiecesLocked(begin, end) }
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// Raise the priorities of pieces in the range [begin, end) to at least Normal // priority. Piece indexes are not the same as bytes. Requires that the info // has been obtained, see Torrent.Info and Torrent.GotInfo.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/t.go#L156-L160
train
anacrolix/torrent
torrent.go
KnownSwarm
func (t *Torrent) KnownSwarm() (ks []Peer) { // Add pending peers to the list t.peers.Each(func(peer Peer) { ks = append(ks, peer) }) // Add half-open peers to the list for _, peer := range t.halfOpen { ks = append(ks, peer) } // Add active peers to the list for conn := range t.conns { ks = append(ks, ...
go
func (t *Torrent) KnownSwarm() (ks []Peer) { // Add pending peers to the list t.peers.Each(func(peer Peer) { ks = append(ks, peer) }) // Add half-open peers to the list for _, peer := range t.halfOpen { ks = append(ks, peer) } // Add active peers to the list for conn := range t.conns { ks = append(ks, ...
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// KnownSwarm returns the known subset of the peers in the Torrent's swarm, including active, // pending, and half-open peers.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/torrent.go#L157-L187
train
anacrolix/torrent
torrent.go
addrActive
func (t *Torrent) addrActive(addr string) bool { if _, ok := t.halfOpen[addr]; ok { return true } for c := range t.conns { ra := c.remoteAddr if ra.String() == addr { return true } } return false }
go
func (t *Torrent) addrActive(addr string) bool { if _, ok := t.halfOpen[addr]; ok { return true } for c := range t.conns { ra := c.remoteAddr if ra.String() == addr { return true } } return false }
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// There's a connection to that address already.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/torrent.go#L208-L219
train
anacrolix/torrent
torrent.go
pieceFirstFileIndex
func pieceFirstFileIndex(pieceOffset int64, files []*File) int { for i, f := range files { if f.offset+f.length > pieceOffset { return i } } return 0 }
go
func pieceFirstFileIndex(pieceOffset int64, files []*File) int { for i, f := range files { if f.offset+f.length > pieceOffset { return i } } return 0 }
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// Returns the index of the first file containing the piece. files must be // ordered by offset.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/torrent.go#L315-L322
train
anacrolix/torrent
torrent.go
pieceEndFileIndex
func pieceEndFileIndex(pieceEndOffset int64, files []*File) int { for i, f := range files { if f.offset+f.length >= pieceEndOffset { return i + 1 } } return 0 }
go
func pieceEndFileIndex(pieceEndOffset int64, files []*File) int { for i, f := range files { if f.offset+f.length >= pieceEndOffset { return i + 1 } } return 0 }
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// Returns the index after the last file containing the piece. files must be // ordered by offset.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/torrent.go#L326-L333
train
anacrolix/torrent
torrent.go
setInfoBytes
func (t *Torrent) setInfoBytes(b []byte) error { if metainfo.HashBytes(b) != t.infoHash { return errors.New("info bytes have wrong hash") } var info metainfo.Info if err := bencode.Unmarshal(b, &info); err != nil { return fmt.Errorf("error unmarshalling info bytes: %s", err) } if err := t.setInfo(&info); err ...
go
func (t *Torrent) setInfoBytes(b []byte) error { if metainfo.HashBytes(b) != t.infoHash { return errors.New("info bytes have wrong hash") } var info metainfo.Info if err := bencode.Unmarshal(b, &info); err != nil { return fmt.Errorf("error unmarshalling info bytes: %s", err) } if err := t.setInfo(&info); err ...
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// Called when metadata for a torrent becomes available.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/torrent.go#L387-L402
train
anacrolix/torrent
torrent.go
name
func (t *Torrent) name() string { t.nameMu.RLock() defer t.nameMu.RUnlock() if t.haveInfo() { return t.info.Name } return t.displayName }
go
func (t *Torrent) name() string { t.nameMu.RLock() defer t.nameMu.RUnlock() if t.haveInfo() { return t.info.Name } return t.displayName }
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// The current working name for the torrent. Either the name in the info dict, // or a display name given such as by the dn value in a magnet link, or "".
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/torrent.go#L442-L449
train
anacrolix/torrent
torrent.go
pieceStateRunStatusChars
func pieceStateRunStatusChars(psr PieceStateRun) (ret string) { ret = fmt.Sprintf("%d", psr.Length) ret += func() string { switch psr.Priority { case PiecePriorityNext: return "N" case PiecePriorityNormal: return "." case PiecePriorityReadahead: return "R" case PiecePriorityNow: return "!" cas...
go
func pieceStateRunStatusChars(psr PieceStateRun) (ret string) { ret = fmt.Sprintf("%d", psr.Length) ret += func() string { switch psr.Priority { case PiecePriorityNext: return "N" case PiecePriorityNormal: return "." case PiecePriorityReadahead: return "R" case PiecePriorityNow: return "!" cas...
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// Produces a small string representing a PieceStateRun.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/torrent.go#L499-L530
train
anacrolix/torrent
torrent.go
newMetaInfo
func (t *Torrent) newMetaInfo() metainfo.MetaInfo { return metainfo.MetaInfo{ CreationDate: time.Now().Unix(), Comment: "dynamic metainfo from client", CreatedBy: "go.torrent", AnnounceList: t.metainfo.UpvertedAnnounceList(), InfoBytes: func() []byte { if t.haveInfo() { return t.metadataBytes ...
go
func (t *Torrent) newMetaInfo() metainfo.MetaInfo { return metainfo.MetaInfo{ CreationDate: time.Now().Unix(), Comment: "dynamic metainfo from client", CreatedBy: "go.torrent", AnnounceList: t.metainfo.UpvertedAnnounceList(), InfoBytes: func() []byte { if t.haveInfo() { return t.metadataBytes ...
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// Returns a run-time generated MetaInfo that includes the info bytes and // announce-list as currently known to the client.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/torrent.go#L602-L616
train
anacrolix/torrent
torrent.go
bytesLeftAnnounce
func (t *Torrent) bytesLeftAnnounce() uint64 { if t.haveInfo() { return uint64(t.bytesLeft()) } else { return math.MaxUint64 } }
go
func (t *Torrent) bytesLeftAnnounce() uint64 { if t.haveInfo() { return uint64(t.bytesLeft()) } else { return math.MaxUint64 } }
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// Bytes left to give in tracker announces.
[ "Bytes", "left", "to", "give", "in", "tracker", "announces", "." ]
d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/torrent.go#L638-L644
train
anacrolix/torrent
torrent.go
offsetRequest
func (t *Torrent) offsetRequest(off int64) (req request, ok bool) { return torrentOffsetRequest(*t.length, t.info.PieceLength, int64(t.chunkSize), off) }
go
func (t *Torrent) offsetRequest(off int64) (req request, ok bool) { return torrentOffsetRequest(*t.length, t.info.PieceLength, int64(t.chunkSize), off) }
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// Return the request that would include the given offset into the torrent // data. Returns !ok if there is no such request.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/torrent.go#L691-L693
train
anacrolix/torrent
torrent.go
worstBadConn
func (t *Torrent) worstBadConn() *connection { wcs := worseConnSlice{t.unclosedConnsAsSlice()} heap.Init(&wcs) for wcs.Len() != 0 { c := heap.Pop(&wcs).(*connection) if c.stats.ChunksReadWasted.Int64() >= 6 && c.stats.ChunksReadWasted.Int64() > c.stats.ChunksReadUseful.Int64() { return c } // If the conne...
go
func (t *Torrent) worstBadConn() *connection { wcs := worseConnSlice{t.unclosedConnsAsSlice()} heap.Init(&wcs) for wcs.Len() != 0 { c := heap.Pop(&wcs).(*connection) if c.stats.ChunksReadWasted.Int64() >= 6 && c.stats.ChunksReadWasted.Int64() > c.stats.ChunksReadUseful.Int64() { return c } // If the conne...
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// The worst connection is one that hasn't been sent, or sent anything useful // for the longest. A bad connection is one that usually sends us unwanted // pieces, or has been in worser half of the established connections for more // than a minute.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/torrent.go#L815-L833
train
anacrolix/torrent
torrent.go
updatePiecePriorities
func (t *Torrent) updatePiecePriorities(begin, end pieceIndex) { for i := begin; i < end; i++ { t.updatePiecePriority(i) } }
go
func (t *Torrent) updatePiecePriorities(begin, end pieceIndex) { for i := begin; i < end; i++ { t.updatePiecePriority(i) } }
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// Update all piece priorities in one hit. This function should have the same // output as updatePiecePriority, but across all pieces.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/torrent.go#L936-L940
train
anacrolix/torrent
torrent.go
byteRegionPieces
func (t *Torrent) byteRegionPieces(off, size int64) (begin, end pieceIndex) { if off >= *t.length { return } if off < 0 { size += off off = 0 } if size <= 0 { return } begin = pieceIndex(off / t.info.PieceLength) end = pieceIndex((off + size + t.info.PieceLength - 1) / t.info.PieceLength) if end > piec...
go
func (t *Torrent) byteRegionPieces(off, size int64) (begin, end pieceIndex) { if off >= *t.length { return } if off < 0 { size += off off = 0 } if size <= 0 { return } begin = pieceIndex(off / t.info.PieceLength) end = pieceIndex((off + size + t.info.PieceLength - 1) / t.info.PieceLength) if end > piec...
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// Returns the range of pieces [begin, end) that contains the extent of bytes.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/torrent.go#L943-L960
train
anacrolix/torrent
torrent.go
forReaderOffsetPieces
func (t *Torrent) forReaderOffsetPieces(f func(begin, end pieceIndex) (more bool)) (all bool) { for r := range t.readers { p := r.pieces if p.begin >= p.end { continue } if !f(p.begin, p.end) { return false } } return true }
go
func (t *Torrent) forReaderOffsetPieces(f func(begin, end pieceIndex) (more bool)) (all bool) { for r := range t.readers { p := r.pieces if p.begin >= p.end { continue } if !f(p.begin, p.end) { return false } } return true }
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// Returns true if all iterations complete without breaking. Returns the read // regions for all readers. The reader regions should not be merged as some // callers depend on this method to enumerate readers.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/torrent.go#L965-L976
train
anacrolix/torrent
torrent.go
readAt
func (t *Torrent) readAt(b []byte, off int64) (n int, err error) { p := &t.pieces[off/t.info.PieceLength] p.waitNoPendingWrites() return p.Storage().ReadAt(b, off-p.Info().Offset()) }
go
func (t *Torrent) readAt(b []byte, off int64) (n int, err error) { p := &t.pieces[off/t.info.PieceLength] p.waitNoPendingWrites() return p.Storage().ReadAt(b, off-p.Info().Offset()) }
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// Non-blocking read. Client lock is not required.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/torrent.go#L1074-L1078
train
anacrolix/torrent
torrent.go
maybeCompleteMetadata
func (t *Torrent) maybeCompleteMetadata() error { if t.haveInfo() { // Nothing to do. return nil } if !t.haveAllMetadataPieces() { // Don't have enough metadata pieces. return nil } err := t.setInfoBytes(t.metadataBytes) if err != nil { t.invalidateMetadata() return fmt.Errorf("error setting info byte...
go
func (t *Torrent) maybeCompleteMetadata() error { if t.haveInfo() { // Nothing to do. return nil } if !t.haveAllMetadataPieces() { // Don't have enough metadata pieces. return nil } err := t.setInfoBytes(t.metadataBytes) if err != nil { t.invalidateMetadata() return fmt.Errorf("error setting info byte...
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// Returns an error if the metadata was completed, but couldn't be set for // some reason. Blame it on the last peer to contribute.
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d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb
https://github.com/anacrolix/torrent/blob/d2400968fc54c3d8a6482d4ca5ff16cc5e5139cb/torrent.go#L1088-L1106
train