mirror of https://github.com/vacp2p/nim-libp2p.git
64 lines
1.7 KiB
Nim
64 lines
1.7 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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{.push raises: [].}
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import chronos, stew/results
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import ../stream/connection
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export results
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const
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DefaultMaxIncomingStreams* = 10
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type
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LPProtoHandler* = proc (
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conn: Connection,
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proto: string):
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Future[void]
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{.gcsafe, raises: [].}
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LPProtocol* = ref object of RootObj
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codecs*: seq[string]
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handler*: LPProtoHandler ## this handler gets invoked by the protocol negotiator
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started*: bool
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maxIncomingStreams: Opt[int]
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method init*(p: LPProtocol) {.base, gcsafe.} = discard
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method start*(p: LPProtocol) {.async, base.} = p.started = true
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method stop*(p: LPProtocol) {.async, base.} = p.started = false
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proc maxIncomingStreams*(p: LPProtocol): int =
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p.maxIncomingStreams.get(DefaultMaxIncomingStreams)
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proc `maxIncomingStreams=`*(p: LPProtocol, val: int) =
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p.maxIncomingStreams = Opt.some(val)
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func codec*(p: LPProtocol): string =
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assert(p.codecs.len > 0, "Codecs sequence was empty!")
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p.codecs[0]
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func `codec=`*(p: LPProtocol, codec: string) =
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# always insert as first codec
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# if we use this abstraction
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p.codecs.insert(codec, 0)
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proc new*(
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T: type LPProtocol,
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codecs: seq[string],
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handler: LPProtoHandler,
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maxIncomingStreams: Opt[int] | int = Opt.none(int)): T =
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T(
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codecs: codecs,
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handler: handler,
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maxIncomingStreams:
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when maxIncomingStreams is int: Opt.some(maxIncomingStreams)
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else: maxIncomingStreams
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)
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