nim-libp2p/libp2p/protocols/protocol.nim

32 lines
977 B
Nim

## Nim-LibP2P
## Copyright (c) 2019 Status Research & Development GmbH
## Licensed under either of
## * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
## * MIT license ([LICENSE-MIT](LICENSE-MIT))
## at your option.
## This file may not be copied, modified, or distributed except according to
## those terms.
import chronos
import ../stream/connection
type
LPProtoHandler* = proc (conn: Connection,
proto: string):
Future[void] {.gcsafe, closure.}
LPProtocol* = ref object of RootObj
codecs*: seq[string]
handler*: LPProtoHandler ## this handler gets invoked by the protocol negotiator
method init*(p: LPProtocol) {.base, gcsafe.} = discard
func codec*(p: LPProtocol): string =
assert(p.codecs.len > 0, "Codecs sequence was empty!")
p.codecs[0]
func `codec=`*(p: LPProtocol, codec: string) =
# always insert as first codec
# if we use this abstraction
p.codecs.insert(codec, 0)