From f38945c22180e467cadfa60f4b7bd9a91a00f17e Mon Sep 17 00:00:00 2001
From: Ahmed Bodiwala <ahmed_bodi@msn.com>
Date: Tue, 2 Oct 2018 17:41:31 +0000
Subject: [PATCH] Add Checkpoints around forked block

---
 src/chainparams.cpp    | 12 +++++++++++-
 src/net_processing.cpp |  2 +-
 src/protocol.cpp       |  1 +
 src/protocol.h         |  1 +
 4 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/src/chainparams.cpp b/src/chainparams.cpp
index a932c6853..946509dc6 100644
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -137,7 +137,17 @@ class CMainParams : public CChainParams {
 
         checkpointData = (CCheckpointData) {
             boost::assign::map_list_of
-            (  0, uint256S("0x21938e71a19f0053f1ea9d2c616feba7c767ade95a20946f26747ae96aaa572b"))
+            (       0, uint256S("0x21938e71a19f0053f1ea9d2c616feba7c767ade95a20946f26747ae96aaa572b"))
+	    (  950521, uint256S("0x3fd8beaae900cdc6d4fe7252ed0572516f2f8e079cedb0ffe3ef577e656d6ee6"))
+	    (  950526, uint256S("0x5c8b911f8bbbea5972d2aeaf55594b1397652475d55cd09ec3d0dba482f3000b"))
+	    (  950534, uint256S("0xf403303c0ff512ca5693b1f4eee363443bc8ba6be25c0fb54e5a137350ad57a4"))
+	    (  950552, uint256S("0x8986e7893a4a572324bd5f1d836be037bf65ce962570fb9bd0d42f08740ca673"))
+	    (  950712, uint256S("0x7c5d436197fe453989f3d797bc7e247c905e9fa032aee8188daf617774024b0d"))
+	    (  950739, uint256S("0x21f8a430dc8fc537f6a586f669e059ef164cedb46fb06209b26f750bc026d0c8"))
+	    (  950849, uint256S("0xe4eb68d4627bf7cb4f242618133377fdc8f5cef0ce1692c3c0b51f3b0db10ceb"))
+	    (  959135, uint256S("0xf9767b30c72249a20b7abcda654f6d435ca5f94955a240d1e3e566cedeaa39fa"))
+	    (  959136, uint256S("0x207e225d9825e8abd76e3a494c7cfaf532cd2b138ae11a5d32c3c3162a3f8996"))
+	    (  959137, uint256S("0x1bd73d05be14274de41b0e9a690b36394192a2b56a0f6b0a05ba4f99079ea040"))
         };
 
         chainTxData = ChainTxData{
diff --git a/src/net_processing.cpp b/src/net_processing.cpp
index 5ed686f6f..25ceace08 100644
--- a/src/net_processing.cpp
+++ b/src/net_processing.cpp
@@ -2602,7 +2602,7 @@ bool static ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStr
         // message would be undesirable as we transmit it ourselves.
     }
     
-    else if (strCommand == NetMsgType::ACP) {
+    else if (strCommand == NetMsgType::ACP || strCommand == NetMsgType::CHECKPOINT) {
         LogPrintf("Received checkpoint, beginning processing.\n");
         CSyncCheckpoint checkpoint;
         vRecv >> checkpoint;
diff --git a/src/protocol.cpp b/src/protocol.cpp
index fd35bc6b7..22edd96bf 100644
--- a/src/protocol.cpp
+++ b/src/protocol.cpp
@@ -40,6 +40,7 @@ const char *CMPCTBLOCK="cmpctblock";
 const char *GETBLOCKTXN="getblocktxn";
 const char *BLOCKTXN="blocktxn";
 const char *ACP="acp";
+const char *CHECKPOINT="checkpoint";
 };
 
 /** All known message types. Keep this in the same order as the list of
diff --git a/src/protocol.h b/src/protocol.h
index bacbd4d3b..cef66568d 100644
--- a/src/protocol.h
+++ b/src/protocol.h
@@ -241,6 +241,7 @@ extern const char *GETBLOCKTXN;
  */
 extern const char *BLOCKTXN;
 extern const char *ACP;
+extern const char *CHECKPOINT;
 };
 
 /* Get a vector of all valid message types (see above) */