From 5d853b8630d51372a7c6928a73a5e90ca7441b90 Mon Sep 17 00:00:00 2001
From: Alvaro Revuelta <alvrevuelta@gmail.com>
Date: Wed, 5 Apr 2023 15:12:49 +0200
Subject: [PATCH] chore: do not mount relay more than once (#1650)

---
 waku/v2/node/waku_node.nim | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/waku/v2/node/waku_node.nim b/waku/v2/node/waku_node.nim
index 89a4095ac..a97c51d7b 100644
--- a/waku/v2/node/waku_node.nim
+++ b/waku/v2/node/waku_node.nim
@@ -413,6 +413,10 @@ proc mountRelay*(node: WakuNode,
                  topics: seq[string] = @[],
                  triggerSelf = true,
                  peerExchangeHandler = none(RoutingRecordsHandler)) {.async, gcsafe.} =
+  if not node.wakuRelay.isNil():
+    error "wakuRelay already mounted, skipping"
+    return
+
   ## The default relay topics is the union of all configured topics plus default PubsubTopic(s)
   info "mounting relay protocol"