119 lines
3.0 KiB
Nim
119 lines
3.0 KiB
Nim
# Nim-LibP2P
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# Copyright (c) 2023 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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##
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when (NimMajor, NimMinor) < (1, 4):
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{.push raises: [Defect].}
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else:
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{.push raises: [].}
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import sequtils
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import chronos, chronicles
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import ../stream/connection,
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../multiaddress,
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../multicodec,
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../muxers/muxer,
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../upgrademngrs/upgrade,
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../protocols/connectivity/autonat/core
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export core.NetworkReachability
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logScope:
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topics = "libp2p transport"
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type
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TransportError* = object of LPError
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TransportInvalidAddrError* = object of TransportError
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TransportClosedError* = object of TransportError
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Transport* = ref object of RootObj
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addrs*: seq[MultiAddress]
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running*: bool
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upgrader*: Upgrade
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networkReachability*: NetworkReachability
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proc newTransportClosedError*(parent: ref Exception = nil): ref LPError =
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newException(TransportClosedError,
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"Transport closed, no more connections!", parent)
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method start*(
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self: Transport,
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addrs: seq[MultiAddress]) {.base, async.} =
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## start the transport
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##
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trace "starting transport on addrs", address = $addrs
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self.addrs = addrs
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self.running = true
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method stop*(self: Transport) {.base, async.} =
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## stop and cleanup the transport
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## including all outstanding connections
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##
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trace "stopping transport", address = $self.addrs
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self.running = false
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method accept*(self: Transport): Future[Connection]
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{.base, gcsafe.} =
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## accept incoming connections
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##
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doAssert(false, "Not implemented!")
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method dial*(
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self: Transport,
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hostname: string,
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address: MultiAddress,
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peerId: Opt[PeerId] = Opt.none(PeerId)): Future[Connection] {.base, gcsafe.} =
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## dial a peer
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##
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doAssert(false, "Not implemented!")
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proc dial*(
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self: Transport,
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address: MultiAddress,
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peerId: Opt[PeerId] = Opt.none(PeerId)): Future[Connection] {.gcsafe.} =
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self.dial("", address)
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method upgradeIncoming*(
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self: Transport,
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conn: Connection): Future[Muxer] {.base, gcsafe.} =
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## base upgrade method that the transport uses to perform
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## transport specific upgrades
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##
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self.upgrader.upgradeIncoming(conn)
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method upgradeOutgoing*(
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self: Transport,
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conn: Connection,
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peerId: Opt[PeerId]): Future[Muxer] {.base, gcsafe.} =
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## base upgrade method that the transport uses to perform
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## transport specific upgrades
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##
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self.upgrader.upgradeOutgoing(conn, peerId)
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method handles*(
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self: Transport,
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address: MultiAddress): bool {.base, gcsafe.} =
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## check if transport supports the multiaddress
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##
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# by default we skip circuit addresses to avoid
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# having to repeat the check in every transport
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if address.protocols.isOk:
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return address.protocols
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.get()
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.filterIt(
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it == multiCodec("p2p-circuit")
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).len == 0
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