Drop support for go 1.20

[btrtrc.git] / global.go

diff --git a/global.go b/global.go
index bd94fe55c45cb64021636f4b7fe91e306de83599..5a5bddba0a6b3acfebea35d8f21d908a38ce3be0 100644 (file)
--- a/global.go
+++ b/global.go
@@ -12,8 +12,11 @@ const (
        defaultChunkSize = 0x4000 // 16KiB
 
        // Arbitrary maximum of "metadata_size" (see https://www.bittorrent.org/beps/bep_0009.html)
-       // This value is 2x what libtorrent-rasterbar uses, which should be plenty
-       maxMetadataSize uint32 = 8 * 1024 * 1024
+       // 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
@@ -21,10 +24,11 @@ const (
 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() {