From 666e7d514f25fc631245ec348b3b30416d6aa622 Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Wed, 2 Nov 2016 04:40:26 -0700
Subject: [PATCH] walletdb: add startHeight option.

---
 lib/node/config.js     | 1 +
 lib/node/fullnode.js   | 1 +
 lib/node/spvnode.js    | 1 +
 lib/wallet/walletdb.js | 8 +++++++-
 4 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/lib/node/config.js b/lib/node/config.js
index 6f178d2b..fde5c984 100644
--- a/lib/node/config.js
+++ b/lib/node/config.js
@@ -210,6 +210,7 @@ config.parseData = function parseData(data, prefix, dirname) {
   options.noAuth = bool(data.noauth);
 
   // Wallet
+  options.startHeight = num(data.startheight);
   options.wipeNoReally = bool(data.wipenoreally);
 
   options.data = data;
diff --git a/lib/node/fullnode.js b/lib/node/fullnode.js
index a1de516b..445fe3f7 100644
--- a/lib/node/fullnode.js
+++ b/lib/node/fullnode.js
@@ -148,6 +148,7 @@ function FullNode(options) {
     witness: this.options.witness,
     useCheckpoints: this.options.useCheckpoints,
     maxFiles: this.options.maxFiles,
+    startHeight: this.options.startHeight,
     wipeNoReally: this.options.wipeNoReally,
     resolution: false,
     verify: false
diff --git a/lib/node/spvnode.js b/lib/node/spvnode.js
index be9e34ef..7dc33a1a 100644
--- a/lib/node/spvnode.js
+++ b/lib/node/spvnode.js
@@ -88,6 +88,7 @@ function SPVNode(options) {
     location: this.location('walletdb'),
     witness: this.options.witness,
     maxFiles: this.options.maxFiles,
+    startHeight: this.options.startHeight,
     wipeNoReally: this.options.wipeNoReally,
     resolution: true,
     verify: true
diff --git a/lib/wallet/walletdb.js b/lib/wallet/walletdb.js
index 009132ca..b55bd847 100644
--- a/lib/wallet/walletdb.js
+++ b/lib/wallet/walletdb.js
@@ -1535,7 +1535,13 @@ WalletDB.prototype.init = co(function* init() {
   }
 
   if (this.client) {
-    tip = yield this.client.getTip();
+    if (this.options.startHeight != null) {
+      tip = yield this.client.getEntry(this.options.startHeight);
+      if (!tip)
+        throw new Error('WDB: Could not find start block.');
+    } else {
+      tip = yield this.client.getTip();
+    }
     tip = BlockMeta.fromEntry(tip);
   } else {
     tip = BlockMeta.fromEntry(this.network.genesis);