1 files changed, 12 insertions, 0 deletions
diff --git a/src/init.cpp b/src/init.cpp
index 7b1318654f..b8988f8b75 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -35,6 +35,7 @@
 #include "compat/sanity.h"
 
 #include <boost/algorithm/string/predicate.hpp>
+#include <boost/algorithm/string/replace.hpp>
 #include <boost/filesystem.hpp>
 #include <boost/interprocess/sync/file_lock.hpp>
 #include <boost/thread.hpp>
@@ -369,6 +370,14 @@ std::string LicenseInfo()
            "\n";
 }
 
+static void BlockNotifyCallback(const uint256& hashNewTip)
+{
+    std::string strCmd = GetArg("-blocknotify", "");
+
+    boost::replace_all(strCmd, "%s", hashNewTip.GetHex());
+    boost::thread t(runCommand, strCmd); // thread runs free
+}
+
 struct CImportingNow
 {
     CImportingNow() {
@@ -1185,6 +1194,9 @@ bool AppInit2(boost::thread_group& threadGroup)
 #endif // !ENABLE_WALLET
     // ********************************************************* Step 9: import blocks
 
+    if (mapArgs.count("-blocknotify"))
+        uiInterface.NotifyBlockTip.connect(BlockNotifyCallback);
+
     // scan for better chains in the block chain database, that are not yet connected in the active best chain
     CValidationState state;
     if (!ActivateBestChain(state))