From 6f0380bdfbade65e200e95d2db5deed6963eb0a0 Mon Sep 17 00:00:00 2001
From: Michael Schmoock <michael@schmoock.net>
Date: Thu, 5 Mar 2020 19:39:22 +0100
Subject: [PATCH] drain: fix receivable and 3ksat margin workaround

---
 drain/drain.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drain/drain.py b/drain/drain.py
index 6d14ff6..ecffc71 100755
--- a/drain/drain.py
+++ b/drain/drain.py
@@ -97,7 +97,10 @@ def spendable_from_scid(plugin, payload, scid=None):
         their_reserve = their
 
     spendable = channel_peer['spendable_msat']
-    receivable = their - their_reserve
+    receivable = channel_peer['receivable_msat']
+    if not receivable:
+        # receivable_msat was added with the 0.8.2 release, have a fallback
+        receivable = their - their_reserve - Millisatoshi('3000sat')
     return spendable, receivable