62 lines
2.1 KiB
Go
62 lines
2.1 KiB
Go
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package torrent
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import (
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"crypto"
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"expvar"
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pp "github.com/anacrolix/torrent/peer_protocol"
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)
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const (
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pieceHash = crypto.SHA1
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defaultChunkSize = 0x4000 // 16KiB
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// Arbitrary maximum of "metadata_size" (see https://www.bittorrent.org/beps/bep_0009.html)
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// This value is 2x what libtorrent-rasterbar uses, which should be plenty
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maxMetadataSize uint32 = 8 * 1024 * 1024
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)
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// These are our extended message IDs. Peers will use these values to
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// select which extension a message is intended for.
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const (
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metadataExtendedId = iota + 1 // 0 is reserved for deleting keys
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pexExtendedId
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)
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func defaultPeerExtensionBytes() PeerExtensionBits {
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return pp.NewPeerExtensionBytes(pp.ExtensionBitDHT, pp.ExtensionBitExtended, pp.ExtensionBitFast)
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}
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func init() {
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torrent.Set("peers supporting extension", &peersSupportingExtension)
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torrent.Set("chunks received", &chunksReceived)
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}
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// I could move a lot of these counters to their own file, but I suspect they
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// may be attached to a Client someday.
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var (
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torrent = expvar.NewMap("torrent")
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peersSupportingExtension expvar.Map
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chunksReceived expvar.Map
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pieceHashedCorrect = expvar.NewInt("pieceHashedCorrect")
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pieceHashedNotCorrect = expvar.NewInt("pieceHashedNotCorrect")
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completedHandshakeConnectionFlags = expvar.NewMap("completedHandshakeConnectionFlags")
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// Count of connections to peer with same client ID.
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connsToSelf = expvar.NewInt("connsToSelf")
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receivedKeepalives = expvar.NewInt("receivedKeepalives")
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// Requests received for pieces we don't have.
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requestsReceivedForMissingPieces = expvar.NewInt("requestsReceivedForMissingPieces")
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requestedChunkLengths = expvar.NewMap("requestedChunkLengths")
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messageTypesReceived = expvar.NewMap("messageTypesReceived")
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// Track the effectiveness of Torrent.connPieceInclinationPool.
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pieceInclinationsReused = expvar.NewInt("pieceInclinationsReused")
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pieceInclinationsNew = expvar.NewInt("pieceInclinationsNew")
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pieceInclinationsPut = expvar.NewInt("pieceInclinationsPut")
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concurrentChunkWrites = expvar.NewInt("torrentConcurrentChunkWrites")
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)
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