mirror of
https://github.com/logos-messaging/logos-messaging-nim.git
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e3dd6203ae
* deep changes in libwaku to adap to nim-ffi * start using ffi pragma in library * update some binding examples * add missing declare_lib.nim file * properly rename api files in library folder
97 lines
3.1 KiB
Nim
97 lines
3.1 KiB
Nim
import std/json
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import chronos, chronicles, results, strutils, libp2p/multiaddress, ffi
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import
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waku/factory/waku,
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waku/discovery/waku_dnsdisc,
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waku/discovery/waku_discv5,
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waku/waku_core/peers,
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waku/node/waku_node,
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waku/node/kernel_api,
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library/declare_lib
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proc retrieveBootstrapNodes(
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enrTreeUrl: string, ipDnsServer: string
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): Future[Result[seq[string], string]] {.async.} =
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let dnsNameServers = @[parseIpAddress(ipDnsServer)]
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let discoveredPeers: seq[RemotePeerInfo] = (
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await retrieveDynamicBootstrapNodes(enrTreeUrl, dnsNameServers)
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).valueOr:
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return err("failed discovering peers from DNS: " & $error)
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var multiAddresses = newSeq[string]()
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for discPeer in discoveredPeers:
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for address in discPeer.addrs:
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multiAddresses.add($address & "/p2p/" & $discPeer)
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return ok(multiAddresses)
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proc updateDiscv5BootstrapNodes(nodes: string, waku: Waku): Result[void, string] =
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waku.wakuDiscv5.updateBootstrapRecords(nodes).isOkOr:
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return err("error in updateDiscv5BootstrapNodes: " & $error)
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return ok()
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proc performPeerExchangeRequestTo*(
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numPeers: uint64, waku: Waku
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): Future[Result[int, string]] {.async.} =
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let numPeersRecv = (await waku.node.fetchPeerExchangePeers(numPeers)).valueOr:
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return err($error)
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return ok(numPeersRecv)
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proc waku_discv5_update_bootnodes(
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ctx: ptr FFIContext[Waku],
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callback: FFICallBack,
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userData: pointer,
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bootnodes: cstring,
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) {.ffi.} =
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## Updates the bootnode list used for discovering new peers via DiscoveryV5
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## bootnodes - JSON array containing the bootnode ENRs i.e. `["enr:...", "enr:..."]`
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updateDiscv5BootstrapNodes($bootnodes, ctx.myLib[]).isOkOr:
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error "UPDATE_DISCV5_BOOTSTRAP_NODES failed", error = error
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return err($error)
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return ok("discovery request processed correctly")
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proc waku_dns_discovery(
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ctx: ptr FFIContext[Waku],
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callback: FFICallBack,
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userData: pointer,
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enrTreeUrl: cstring,
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nameDnsServer: cstring,
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timeoutMs: cint,
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) {.ffi.} =
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let nodes = (await retrieveBootstrapNodes($enrTreeUrl, $nameDnsServer)).valueOr:
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error "GET_BOOTSTRAP_NODES failed", error = error
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return err($error)
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## returns a comma-separated string of bootstrap nodes' multiaddresses
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return ok(nodes.join(","))
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proc waku_start_discv5(
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ctx: ptr FFIContext[Waku], callback: FFICallBack, userData: pointer
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) {.ffi.} =
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(await ctx.myLib[].wakuDiscv5.start()).isOkOr:
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error "START_DISCV5 failed", error = error
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return err("error starting discv5: " & $error)
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return ok("discv5 started correctly")
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proc waku_stop_discv5(
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ctx: ptr FFIContext[Waku], callback: FFICallBack, userData: pointer
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) {.ffi.} =
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await ctx.myLib[].wakuDiscv5.stop()
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return ok("discv5 stopped correctly")
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proc waku_peer_exchange_request(
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ctx: ptr FFIContext[Waku],
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callback: FFICallBack,
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userData: pointer,
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numPeers: uint64,
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) {.ffi.} =
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let numValidPeers = (await performPeerExchangeRequestTo(numPeers, ctx.myLib[])).valueOr:
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error "waku_peer_exchange_request failed", error = error
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return err("failed peer exchange: " & $error)
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return ok($numValidPeers)
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