67 lines
2.2 KiB
Nim
67 lines
2.2 KiB
Nim
## Nim-LibP2P
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## Copyright (c) 2018 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 chronos
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import transport, wire, connection,
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multiaddress, connection,
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multicodec, chronosstream
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type TcpTransport* = ref object of Transport
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server*: StreamServer
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proc connHandler*(t: Transport,
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server: StreamServer,
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client: StreamTransport):
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Future[Connection] {.async, gcsafe.} =
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let conn: Connection = newConnection(newChronosStream(server, client))
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let handlerFut = if t.handler == nil: nil else: t.handler(conn)
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let connHolder: ConnHolder = ConnHolder(connection: conn,
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connFuture: handlerFut)
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t.connections.add(connHolder)
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result = conn
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proc connCb(server: StreamServer,
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client: StreamTransport) {.async, gcsafe.} =
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let t: Transport = cast[Transport](server.udata)
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discard t.connHandler(server, client)
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method init*(t: TcpTransport) =
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t.multicodec = multiCodec("tcp")
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method close*(t: TcpTransport): Future[void] {.async, gcsafe.} =
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## start the transport
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await procCall Transport(t).close() # call base
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t.server.stop()
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await t.server.closeWait()
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method listen*(t: TcpTransport,
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ma: MultiAddress,
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handler: ConnHandler):
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Future[void] {.async, gcsafe.} =
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await procCall Transport(t).listen(ma, handler) # call base
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## listen on the transport
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let listenFuture: Future[void] = newFuture[void]()
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result = listenFuture
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let server = createStreamServer(t.ma, connCb, {}, t)
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t.server = server
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server.start()
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listenFuture.complete()
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method dial*(t: TcpTransport,
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address: MultiAddress):
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Future[Connection] {.async, gcsafe.} =
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## dial a peer
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let client: StreamTransport = await connect(address)
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result = await t.connHandler(t.server, client)
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method handles*(t: TcpTransport, address: MultiAddress): bool {.gcsafe.} = true
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