97 lines
2.4 KiB
Nim
97 lines
2.4 KiB
Nim
## Nim-LibP2P
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## Copyright (c) 2019 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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{.push raises: [Defect].}
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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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../upgrademngrs/upgrade
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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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TransportClosedError* = object of TransportError
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Transport* = ref object of RootObj
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ma*: Multiaddress
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running*: bool
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upgrader*: Upgrade
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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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ma: MultiAddress): Future[void] {.base, async.} =
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## start the transport
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##
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trace "starting transport", address = $ma
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self.ma = ma
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self.running = true
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method stop*(self: Transport): Future[void] {.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.ma
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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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address: MultiAddress): 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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method upgradeIncoming*(
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self: Transport,
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conn: Connection): Future[void] {.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): Future[Connection] {.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)
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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.get().filterIt( it == multiCodec("p2p-circuit") ).len == 0
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