83 lines
2.2 KiB
Nim
83 lines
2.2 KiB
Nim
## Nim-LibP2P
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## Copyright (c) 2020 Status Research & Development GmbH
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## Licensed under either of
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## * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
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## * MIT license ([LICENSE-MIT](LICENSE-MIT))
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## at your option.
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## This file may not be copied, modified, or distributed except according to
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## those terms.
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import hashes
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import chronos, metrics
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import lpstream,
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../multiaddress,
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../peerinfo
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export lpstream
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const
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ConnectionTrackerName* = "libp2p.connection"
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type
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Direction* {.pure.} = enum
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None, In, Out
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Connection* = ref object of LPStream
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peerInfo*: PeerInfo
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observedAddr*: Multiaddress
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dir*: Direction
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ConnectionTracker* = ref object of TrackerBase
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opened*: uint64
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closed*: uint64
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proc setupConnectionTracker(): ConnectionTracker {.gcsafe.}
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proc getConnectionTracker*(): ConnectionTracker {.gcsafe.} =
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result = cast[ConnectionTracker](getTracker(ConnectionTrackerName))
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if isNil(result):
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result = setupConnectionTracker()
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proc dumpTracking(): string {.gcsafe.} =
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var tracker = getConnectionTracker()
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result = "Opened conns: " & $tracker.opened & "\n" &
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"Closed conns: " & $tracker.closed
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proc leakTransport(): bool {.gcsafe.} =
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var tracker = getConnectionTracker()
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result = (tracker.opened != tracker.closed)
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proc setupConnectionTracker(): ConnectionTracker =
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result = new ConnectionTracker
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result.opened = 0
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result.closed = 0
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result.dump = dumpTracking
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result.isLeaked = leakTransport
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addTracker(ConnectionTrackerName, result)
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proc init*(C: type Connection,
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peerInfo: PeerInfo,
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dir: Direction): Connection =
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result = C(peerInfo: peerInfo, dir: dir)
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result.initStream()
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method initStream*(s: Connection) =
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if s.objName.len == 0:
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s.objName = "Connection"
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procCall LPStream(s).initStream()
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s.closeEvent = newAsyncEvent()
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inc getConnectionTracker().opened
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method close*(s: Connection) {.async.} =
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if not s.isClosed:
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await procCall LPStream(s).close()
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inc getConnectionTracker().closed
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proc `$`*(conn: Connection): string =
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if not isNil(conn.peerInfo):
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result = conn.peerInfo.id
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func hash*(p: Connection): Hash =
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cast[pointer](p).hash
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