send peer update to IOT client only when it is relayed

logic/peers.go

@@ -132,6 +132,48 @@ func GetPeerUpdateForHost(ctx context.Context, network string, host *models.Host
 		if err != nil {
 			continue
 		}
+		if host.OS == models.OS_Types.IoT {
+			if node.IsRelayed {
+				relayNode, err := GetNodeByID(node.RelayedBy)
+				if err != nil {
+					continue
+				}
+				relayHost, err := GetHost(relayNode.HostID.String())
+				if err != nil {
+					continue
+				}
+				relayPeer := wgtypes.PeerConfig{
+					PublicKey:                   relayHost.PublicKey,
+					PersistentKeepaliveInterval: &relayNode.PersistentKeepalive,
+					ReplaceAllowedIPs:           true,
+					AllowedIPs:                  GetAllowedIPs(&node, &relayNode, nil),
+				}
+				uselocal := false
+				if host.EndpointIP.String() == relayHost.EndpointIP.String() {
+					// peer is on same network
+					// set to localaddress
+					uselocal = true
+					if node.LocalAddress.IP == nil {
+						// use public endpint
+						uselocal = false
+					}
+					if node.LocalAddress.String() == relayNode.LocalAddress.String() {
+						uselocal = false
+					}
+				}
+				relayPeer.Endpoint = &net.UDPAddr{
+					IP:   relayHost.EndpointIP,
+					Port: getPeerWgListenPort(relayHost),
+				}
+
+				if uselocal {
+					relayPeer.Endpoint.IP = relayNode.LocalAddress.IP
+					relayPeer.Endpoint.Port = relayHost.ListenPort
+				}
+				hostPeerUpdate.Peers = append(hostPeerUpdate.Peers, relayPeer)
+			}
+			continue
+		}
 		if !node.Connected || node.PendingDelete || node.Action == models.NODE_DELETE {
 			continue
 		}

mq/publishers.go

@@ -88,18 +88,20 @@ func PublishSingleHostPeerUpdate(ctx context.Context, host *models.Host, deleted
 	if len(peerUpdate.Peers) == 0 { // no peers to send
 		return nil
 	}
-	proxyUpdate, err := logic.GetProxyUpdateForHost(ctx, host)
-	if err != nil {
-		return err
-	}
-	proxyUpdate.Server = servercfg.GetServer()
-	if host.ProxyEnabled {
-		proxyUpdate.Action = models.ProxyUpdate
-	} else {
-		proxyUpdate.Action = models.NoProxy
-	}
+	if host.OS != models.OS_Types.IoT {
+		proxyUpdate, err := logic.GetProxyUpdateForHost(ctx, host)
+		if err != nil {
+			return err
+		}
+		proxyUpdate.Server = servercfg.GetServer()
+		if host.ProxyEnabled {
+			proxyUpdate.Action = models.ProxyUpdate
+		} else {
+			proxyUpdate.Action = models.NoProxy
+		}
 
-	peerUpdate.ProxyUpdate = proxyUpdate
+		peerUpdate.ProxyUpdate = proxyUpdate
+	}
 
 	data, err := json.Marshal(&peerUpdate)
 	if err != nil {