feat: adding waku_dial_peer and get_connected_peers to libwaku (#3149)

Author: gabrielmer

library/libwaku.h

@@ -120,6 +120,13 @@ int waku_disconnect_peer_by_id(void* ctx,
                  WakuCallBack callback,
                  void* userData);
 
+int waku_dial_peer(void* ctx,
+                 const char* peerMultiAddr,
+                 const char* protocol,
+                 int timeoutMs,
+                 WakuCallBack callback,
+                 void* userData);
+
 int waku_dial_peer_by_id(void* ctx,
                  const char* peerId,
                  const char* protocol,
@@ -140,6 +147,10 @@ int waku_listen_addresses(void* ctx,
                           WakuCallBack callback,
                           void* userData);
 
+int waku_get_connected_peers(void* ctx,
+                          WakuCallBack callback,
+                          void* userData);
+
 // Returns a list of multiaddress given a url to a DNS discoverable ENR tree
 // Parameters
 //     char* entTreeUrl: URL containing a discoverable ENR tree

library/libwaku.nim

@@ -498,6 +498,28 @@ proc waku_disconnect_peer_by_id(
   )
   .handleRes(callback, userData)
 
+proc waku_dial_peer(
+    ctx: ptr WakuContext,
+    peerMultiAddr: cstring,
+    protocol: cstring,
+    timeoutMs: cuint,
+    callback: WakuCallBack,
+    userData: pointer,
+): cint {.dynlib, exportc.} =
+  checkLibwakuParams(ctx, callback, userData)
+
+  waku_thread
+  .sendRequestToWakuThread(
+    ctx,
+    RequestType.PEER_MANAGER,
+    PeerManagementRequest.createShared(
+      op = PeerManagementMsgType.DIAL_PEER,
+      peerMultiAddr = $peerMultiAddr,
+      protocol = $protocol,
+    ),
+  )
+  .handleRes(callback, userData)
+
 proc waku_dial_peer_by_id(
     ctx: ptr WakuContext,
     peerId: cstring,
@@ -513,7 +535,7 @@ proc waku_dial_peer_by_id(
     ctx,
     RequestType.PEER_MANAGER,
     PeerManagementRequest.createShared(
-      op = PeerManagementMsgType.DIAL_PEER_BY_ID, peerId = $peerId
+      op = PeerManagementMsgType.DIAL_PEER_BY_ID, peerId = $peerId, protocol = $protocol
     ),
   )
   .handleRes(callback, userData)
@@ -531,6 +553,19 @@ proc waku_get_peerids_from_peerstore(
   )
   .handleRes(callback, userData)
 
+proc waku_get_connected_peers(
+    ctx: ptr WakuContext, callback: WakuCallBack, userData: pointer
+): cint {.dynlib, exportc.} =
+  checkLibwakuParams(ctx, callback, userData)
+
+  waku_thread
+  .sendRequestToWakuThread(
+    ctx,
+    RequestType.PEER_MANAGER,
+    PeerManagementRequest.createShared(PeerManagementMsgType.GET_CONNECTED_PEERS),
+  )
+  .handleRes(callback, userData)
+
 proc waku_get_peerids_by_protocol(
     ctx: ptr WakuContext, protocol: cstring, callback: WakuCallBack, userData: pointer
 ): cint {.dynlib, exportc.} =

library/waku_thread/inter_thread_communication/requests/peer_manager_request.nim

@@ -11,7 +11,9 @@ type PeerManagementMsgType* {.pure.} = enum
   GET_ALL_PEER_IDS
   GET_PEER_IDS_BY_PROTOCOL
   DISCONNECT_PEER_BY_ID
+  DIAL_PEER
   DIAL_PEER_BY_ID
+  GET_CONNECTED_PEERS
 
 type PeerManagementRequest* = object
   operation: PeerManagementMsgType
@@ -95,14 +97,29 @@ proc process*(
       return err($error)
     await waku.node.peerManager.disconnectNode(peerId)
     return ok("")
+  of DIAL_PEER:
+    let remotePeerInfo = parsePeerInfo($self[].peerMultiAddr).valueOr:
+      error "DIAL_PEER failed", error = $error
+      return err($error)
+    let conn = await waku.node.peerManager.dialPeer(remotePeerInfo, $self[].protocol)
+    if conn.isNone():
+      let msg = "failed dialing peer"
+      error "DIAL_PEER failed", error = msg, peerId = $remotePeerInfo.peerId
+      return err(msg)
   of DIAL_PEER_BY_ID:
     let peerId = PeerId.init($self[].peerId).valueOr:
       error "DIAL_PEER_BY_ID failed", error = $error
       return err($error)
     let conn = await waku.node.peerManager.dialPeer(peerId, $self[].protocol)
     if conn.isNone():
       let msg = "failed dialing peer"
-      error "DIAL_PEER_BY_ID failed", error = msg
+      error "DIAL_PEER_BY_ID failed", error = msg, peerId = $peerId
       return err(msg)
+  of GET_CONNECTED_PEERS:
+    ## returns a comma-separated string of peerIDs
+    let
+      (inPeerIds, outPeerIds) = waku.node.peerManager.connectedPeers()
+      connectedPeerids = concat(inPeerIds, outPeerIds)
+    return ok(connectedPeerids.mapIt($it).join(","))
 
   return ok("")