From 6f2a55d63ca9b4daf70a22e31285ced720697e0c Mon Sep 17 00:00:00 2001
From: Erik Arvstedt <erik.arvstedt@gmail.com>
Date: Wed, 27 Nov 2019 14:04:44 +0100
Subject: [PATCH] lnd: wait until RPC port is open

---
 modules/lnd.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/modules/lnd.nix b/modules/lnd.nix
index 9c074ba..19ab45f 100644
--- a/modules/lnd.nix
+++ b/modules/lnd.nix
@@ -137,6 +137,11 @@ in {
             -d "{\"wallet_password\": \"$(cat /secrets/lnd-wallet-password | tr -d '\n' | base64 -w0)\"}" \
             https://127.0.0.1:8080/v1/unlockwallet
         fi
+
+        # Wait until the RPC port is open
+        while ! { exec 3>/dev/tcp/127.0.0.1/${toString cfg.rpcPort}; } &>/dev/null; do
+          sleep 0.1
+        done
       '';
     };
   };