X-Git-Url: http://www.git.stargrave.org/?a=blobdiff_plain;f=global.go;h=5a5bddba0a6b3acfebea35d8f21d908a38ce3be0;hb=HEAD;hp=1de8539b3eb94a31223a8f8bf120ae84c3c5180d;hpb=76a3c0891ade5256f530abb56e29918192b780ab;p=btrtrc.git

diff --git a/global.go b/global.go
index 1de8539b..5a5bddba 100644
--- a/global.go
+++ b/global.go
@@ -1,43 +1,55 @@
 package torrent
 
 import (
-	pp "github.com/anacrolix/torrent/peer_protocol"
 	"crypto"
 	"expvar"
+
+	pp "github.com/anacrolix/torrent/peer_protocol"
 )
 
 const (
 	pieceHash        = crypto.SHA1
-	maxRequests      = 250    // Maximum pending requests we allow peers to send us.
 	defaultChunkSize = 0x4000 // 16KiB
 
-	// These are our extended message IDs. Peers will use these values to
-	// select which extension a message is intended for.
+	// Arbitrary maximum of "metadata_size" (see https://www.bittorrent.org/beps/bep_0009.html)
+	// libtorrent-rasterbar uses 4MiB at last check. TODO: Add links to values used by other
+	// implementations here. I saw 14143527 in the metainfo for
+	// 3597f16e239aeb8f8524a1a1c4e4725a0a96b470. Large values for legitimate torrents should be
+	// recorded here for consideration.
+	maxMetadataSize uint32 = 16 * 1024 * 1024
+)
+
+// These are our extended message IDs. Peers will use these values to
+// select which extension a message is intended for.
+const (
 	metadataExtendedId = iota + 1 // 0 is reserved for deleting keys
 	pexExtendedId
+	utHolepunchExtendedId
 )
 
 func defaultPeerExtensionBytes() PeerExtensionBits {
-	return pp.NewPeerExtensionBytes(pp.ExtensionBitDHT, pp.ExtensionBitExtended, pp.ExtensionBitFast)
+	return pp.NewPeerExtensionBytes(pp.ExtensionBitDht, pp.ExtensionBitLtep, pp.ExtensionBitFast)
+}
+
+func init() {
+	torrent.Set("peers supporting extension", &peersSupportingExtension)
+	torrent.Set("chunks received", &chunksReceived)
 }
 
 // I could move a lot of these counters to their own file, but I suspect they
 // may be attached to a Client someday.
 var (
-	torrent = expvar.NewMap("torrent")
-
-	peersAddedBySource = expvar.NewMap("peersAddedBySource")
+	torrent                  = expvar.NewMap("torrent")
+	peersSupportingExtension expvar.Map
+	chunksReceived           expvar.Map
 
 	pieceHashedCorrect    = expvar.NewInt("pieceHashedCorrect")
 	pieceHashedNotCorrect = expvar.NewInt("pieceHashedNotCorrect")
 
-	peerExtensions                    = expvar.NewMap("peerExtensions")
 	completedHandshakeConnectionFlags = expvar.NewMap("completedHandshakeConnectionFlags")
 	// Count of connections to peer with same client ID.
-	connsToSelf                = expvar.NewInt("connsToSelf")
-	receivedKeepalives         = expvar.NewInt("receivedKeepalives")
-	supportedExtensionMessages = expvar.NewMap("supportedExtensionMessages")
-	postedKeepalives           = expvar.NewInt("postedKeepalives")
+	connsToSelf        = expvar.NewInt("connsToSelf")
+	receivedKeepalives = expvar.NewInt("receivedKeepalives")
 	// Requests received for pieces we don't have.
 	requestsReceivedForMissingPieces = expvar.NewInt("requestsReceivedForMissingPieces")
 	requestedChunkLengths            = expvar.NewMap("requestedChunkLengths")
@@ -48,4 +60,6 @@ var (
 	pieceInclinationsReused = expvar.NewInt("pieceInclinationsReused")
 	pieceInclinationsNew    = expvar.NewInt("pieceInclinationsNew")
 	pieceInclinationsPut    = expvar.NewInt("pieceInclinationsPut")
+
+	concurrentChunkWrites = expvar.NewInt("torrentConcurrentChunkWrites")
 )