From 1823840ed6830d1f30ec86296f7e5ec9bdb605c3 Mon Sep 17 00:00:00 2001
From: Conner Fromknecht <conner@lightning.engineering>
Date: Mon, 30 Mar 2020 16:55:31 -0700
Subject: [PATCH] rpcserver: add missing channel limit check to OpenChannelSync

---
 rpcserver.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/rpcserver.go b/rpcserver.go
index 4b5f56bc..01faa0d3 100644
--- a/rpcserver.go
+++ b/rpcserver.go
@@ -1870,6 +1870,14 @@ func (r *rpcServer) OpenChannelSync(ctx context.Context,
 			"initial state must be below the local funding amount")
 	}
 
+	// Ensure that the user doesn't exceed the current soft-limit for
+	// channel size. If the funding amount is above the soft-limit, then
+	// we'll reject the request.
+	if localFundingAmt > MaxFundingAmount {
+		return nil, fmt.Errorf("funding amount is too large, the max "+
+			"channel size is: %v", MaxFundingAmount)
+	}
+
 	// Restrict the size of the channel we'll actually open. At a later
 	// level, we'll ensure that the output we create after accounting for
 	// fees that a dust output isn't created.