From 6cc7d261406ad38071065a79f66c4366f65b65ba Mon Sep 17 00:00:00 2001
From: moneromooo-monero <moneromooo-monero@users.noreply.github.com>
Date: Sat, 21 Jan 2017 20:29:22 +0000
Subject: [PATCH 1/2] ringct: reorder a bit to check quicker tests first

---
 src/ringct/rctSigs.cpp | 34 +++++++++++++++++-----------------
 1 file changed, 17 insertions(+), 17 deletions(-)

diff --git a/src/ringct/rctSigs.cpp b/src/ringct/rctSigs.cpp
index 74fed0ed..b8f3596e 100644
--- a/src/ringct/rctSigs.cpp
+++ b/src/ringct/rctSigs.cpp
@@ -797,23 +797,6 @@ namespace rct {
         tools::thread_group threadpool(tools::thread_group::optimal_with_max(threads));
 
         if (semantics) {
-          results.clear();
-          results.resize(rv.outPk.size());
-          tools::task_region(threadpool, [&] (tools::task_region_handle& region) {
-            for (size_t i = 0; i < rv.outPk.size(); i++) {
-              region.run([&, i] {
-                  results[i] = verRange(rv.outPk[i].mask, rv.p.rangeSigs[i]);
-              });
-            }
-          });
-
-          for (size_t i = 0; i < results.size(); ++i) {
-            if (!results[i]) {
-              LOG_PRINT_L1("Range proof verified failed for output " << i);
-              return false;
-            }
-          }
-
           key sumOutpks = identity();
           for (size_t i = 0; i < rv.outPk.size(); i++) {
               addKeys(sumOutpks, sumOutpks, rv.outPk[i].mask);
@@ -833,6 +816,23 @@ namespace rct {
               LOG_PRINT_L1("Sum check failed");
               return false;
           }
+
+          results.clear();
+          results.resize(rv.outPk.size());
+          tools::task_region(threadpool, [&] (tools::task_region_handle& region) {
+            for (size_t i = 0; i < rv.outPk.size(); i++) {
+              region.run([&, i] {
+                  results[i] = verRange(rv.outPk[i].mask, rv.p.rangeSigs[i]);
+              });
+            }
+          });
+
+          for (size_t i = 0; i < results.size(); ++i) {
+            if (!results[i]) {
+              LOG_PRINT_L1("Range proof verified failed for output " << i);
+              return false;
+            }
+          }
         }
         else {
           const key message = get_pre_mlsag_hash(rv);

From 7c3f79cb9fcd51ade2b25c700567bdc101250ce1 Mon Sep 17 00:00:00 2001
From: moneromooo-monero <moneromooo-monero@users.noreply.github.com>
Date: Sat, 21 Jan 2017 20:30:10 +0000
Subject: [PATCH 2/2] core: early out in handle_incoming_tx if already in pool
 or blockchain

---
 src/cryptonote_core/cryptonote_core.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/cryptonote_core/cryptonote_core.cpp b/src/cryptonote_core/cryptonote_core.cpp
index 5294431d..5be25a41 100644
--- a/src/cryptonote_core/cryptonote_core.cpp
+++ b/src/cryptonote_core/cryptonote_core.cpp
@@ -496,6 +496,18 @@ namespace cryptonote
       return false;
     }
 
+    if(m_mempool.have_tx(tx_hash))
+    {
+      LOG_PRINT_L2("tx " << tx_hash << "already have transaction in tx_pool");
+      return true;
+    }
+
+    if(m_blockchain_storage.have_tx(tx_hash))
+    {
+      LOG_PRINT_L2("tx " << tx_hash << " already have transaction in blockchain");
+      return true;
+    }
+
     if(!check_tx_syntax(tx))
     {
       LOG_PRINT_L1("WRONG TRANSACTION BLOB, Failed to check tx " << tx_hash << " syntax, rejected");