From 64519e25d8c31d27b6ee81f4f94f6c8959c155ef Mon Sep 17 00:00:00 2001
From: pinkiebell <40266861+pinkiebell@users.noreply.github.com>
Date: Sat, 13 Apr 2019 20:34:25 +0200
Subject: [PATCH] Fix consensus stalling after readOnly switch

Consensus stalls if there are no other validators in the network and
the validator is switched from readOnly=true back to readOnly=false.

Fixes #3
---
 consensus/state.go | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/consensus/state.go b/consensus/state.go
index 83a6568deb0..2bf69fb7e13 100644
--- a/consensus/state.go
+++ b/consensus/state.go
@@ -781,8 +781,17 @@ func (cs *ConsensusState) handleTxsAvailable() {
 }
 
 func (cs *ConsensusState) SetReadonly(readonly bool) {
-	cs.readonly = readonly
 	cs.Logger.Info("[SetReadonly]: Set to " + strconv.FormatBool(readonly) + " " + strconv.FormatBool(cs.readonly))
+	cs.mtx.Lock()
+	cs.readonly = readonly
+	cs.mtx.Unlock()
+
+	if (!cs.readonly) {
+		if (cs.LastCommit.HasAll()) {
+			// Fix consensus stalling after readOnly switch with no other validators in the network
+			cs.scheduleTimeout(5000, cs.Height, cs.Round, cstypes.RoundStepPrevoteWait)
+		}
+	}
 }
 
 func (cs *ConsensusState) IsReadonly() bool {