From 6c77950cc48771f140506aeab386f1a7eaf97017 Mon Sep 17 00:00:00 2001
From: Andrew Cann <shum@canndrew.org>
Date: Mon, 3 Aug 2020 18:02:54 +0800
Subject: [PATCH] Send correct commitment point in channel_reestablish messages

The commitment points we send in the `channel_reestablish` messages is
wrong. We need to send our commitment point for the peer's most recent
commitment, not theirs. This commit fixes the issue.
---
 src/DotNetLightning.Core/Channel/Channel.fs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/DotNetLightning.Core/Channel/Channel.fs b/src/DotNetLightning.Core/Channel/Channel.fs
index d6d36282f..607d36316 100644
--- a/src/DotNetLightning.Core/Channel/Channel.fs
+++ b/src/DotNetLightning.Core/Channel/Channel.fs
@@ -123,7 +123,7 @@ module Channel =
                     YourLastPerCommitmentSecret =
                         commitments.RemotePerCommitmentSecrets.LastRevocationKey()
                     MyCurrentPerCommitmentPoint =
-                        commitments.RemoteCommit.RemotePerCommitmentPoint
+                        commitmentSeed.DeriveCommitmentPubKey commitments.RemoteCommit.Index
                 }
             }
         [ WeSentChannelReestablish ourChannelReestablish ] |> Ok