From 36d0abe635dc51e5dfd44e53e2882683f97305b1 Mon Sep 17 00:00:00 2001
From: catbref <misc-github@talk2dom.com>
Date: Wed, 5 Aug 2020 10:04:25 +0100
Subject: [PATCH] WIP: trade-bot: log warning when we can't fund P2SH-B for
 some reason

---
 src/main/java/org/qortal/controller/TradeBot.java | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/main/java/org/qortal/controller/TradeBot.java b/src/main/java/org/qortal/controller/TradeBot.java
index db9f0f8d..afe5c5f6 100644
--- a/src/main/java/org/qortal/controller/TradeBot.java
+++ b/src/main/java/org/qortal/controller/TradeBot.java
@@ -654,6 +654,11 @@ public class TradeBot {
 		String p2shAddress = BTC.getInstance().deriveP2shAddress(redeemScriptBytes);
 
 		Transaction p2shFundingTransaction = BTC.getInstance().buildSpend(tradeBotData.getXprv58(), p2shAddress, FEE_AMOUNT);
+		if (p2shFundingTransaction == null) {
+			LOGGER.warn(() -> String.format("Unable to build P2SH-B funding transaction - lack of funds?"));
+			return;
+		}
+
 		if (!BTC.getInstance().broadcastTransaction(p2shFundingTransaction)) {
 			// We couldn't fund P2SH-B at this time
 			LOGGER.debug(() -> String.format("Couldn't broadcast P2SH-B funding transaction?"));