## 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 sequtils import chronos, chronicles import ../peerinfo, ../connection, ../multiaddress, ../multicodec type ConnHandler* = proc (conn: Connection): Future[void] {.gcsafe.} ConnHolder* = object connection*: Connection connFuture*: Future[void] Transport* = ref object of RootObj ma*: Multiaddress connections*: seq[ConnHolder] handler*: ConnHandler multicodec*: MultiCodec method init*(t: Transport) {.base, gcsafe.} = ## perform protocol initialization discard proc newTransport*(t: typedesc[Transport]): t {.gcsafe.} = new result result.init() method close*(t: Transport) {.base, async, gcsafe.} = ## stop and cleanup the transport ## including all outstanding connections await allFutures(t.connections.mapIt(it.connection.close())) method listen*(t: Transport, ma: MultiAddress, handler: ConnHandler): Future[Future[void]] {.base, async, gcsafe.} = ## listen for incoming connections t.ma = ma t.handler = handler debug "starting node", address = $ma method dial*(t: Transport, address: MultiAddress): Future[Connection] {.base, async, gcsafe.} = ## dial a peer discard method upgrade*(t: Transport) {.base, async, gcsafe.} = ## base upgrade method that the transport uses to perform ## transport specific upgrades discard method handles*(t: Transport, address: MultiAddress): bool {.base, gcsafe.} = ## check if transport supportes the multiaddress # TODO: this should implement generic logic that would use the multicodec # declared in the multicodec field and set by each individual transport discard method localAddress*(t: Transport): MultiAddress {.base, gcsafe.} = ## get the local address of the transport in case started with 0.0.0.0:0 discard