From 496d1e8edc0350c8f068bc76e8c30cff8a785ee1 Mon Sep 17 00:00:00 2001
From: Olaoluwa Osuntokun <laolu32@gmail.com>
Date: Wed, 13 Jul 2016 12:22:54 -0700
Subject: [PATCH] lnd: manually set sig pending bit in commitment state machine
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This commit fixes a class of bug which would trigger a never ending
loop of “null” commitment updates between two peers.
---
 peer.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/peer.go b/peer.go
index b3e2cc586..e094fe35e 100644
--- a/peer.go
+++ b/peer.go
@@ -769,6 +769,7 @@ out:
 					peerLog.Errorf("unable to update "+
 						"commitment: %v", err)
 				}
+				state.sigPending = true
 			}
 		case msg, ok := <-upstreamLink:
 			// If the upstream message link is closed, this signals
@@ -890,6 +891,7 @@ out:
 						"commitment: %v", err)
 					continue
 				}
+				state.sigPending = true
 				state.htlcsToSettle = nil
 			}
 		case <-p.quit:
@@ -921,8 +923,6 @@ func (p *peer) updateCommitTx(state *commitmentState) error {
 	}
 	p.queueMsg(commitSig, nil)
 
-	state.sigPending = true
-
 	return nil
 }