Merge pull request #2386

a15e8583 wallet2: guard against daemon sending txes in the wrong order (moneromooo-monero)
8fe5f609 rpc: order transactions in the order they were requested (moneromooo-monero)

src/rpc/core_rpc_server.cpp

@@ -478,18 +478,30 @@ namespace cryptonote
       bool r = m_core.get_pool_transactions(pool_txs);
       if(r)
       {
-        for (std::list<transaction>::const_iterator i = pool_txs.begin(); i != pool_txs.end(); ++i)
+        // sort to match original request
+        std::list<transaction> sorted_txs;
+        std::list<cryptonote::transaction>::const_iterator i;
+        for (const crypto::hash &h: vh)
         {
-          crypto::hash tx_hash = get_transaction_hash(*i);
-          std::list<crypto::hash>::iterator mi = std::find(missed_txs.begin(), missed_txs.end(), tx_hash);
-          if (mi != missed_txs.end())
+          if (std::find(missed_txs.begin(), missed_txs.end(), h) == missed_txs.end())
           {
-            pool_tx_hashes.insert(tx_hash);
-            missed_txs.erase(mi);
-            txs.push_back(*i);
+            // core returns the ones it finds in the right order
+            if (get_transaction_hash(txs.front()) != h)
+            {
+              res.status = "Failed: tx hash mismatch";
+              return true;
+            }
+            sorted_txs.push_back(std::move(txs.front()));
+            txs.pop_front();
+          }
+          else if ((i = std::find_if(pool_txs.begin(), pool_txs.end(), [h](cryptonote::transaction &tx) { return h == cryptonote::get_transaction_hash(tx); })) != pool_txs.end())
+          {
+            sorted_txs.push_back(*i);
+            missed_txs.remove(h);
             ++found_in_pool;
           }
         }
+        txs = sorted_txs;
       }
       LOG_PRINT_L2("Found " << found_in_pool << "/" << vh.size() << " transactions in the pool");
     }

src/wallet/wallet2.cpp

@@ -1539,23 +1539,22 @@ void wallet2::update_pool_state(bool refreshed)
     {
       if (res.txs.size() == txids.size())
       {
-        size_t n = 0;
-        for (const auto &txid: txids)
+        for (const auto &tx_entry: res.txs)
         {
-          // might have just been put in a block
-          if (res.txs[n].in_pool)
+          if (tx_entry.in_pool)
           {
             cryptonote::transaction tx;
             cryptonote::blobdata bd;
             crypto::hash tx_hash, tx_prefix_hash;
-            if (epee::string_tools::parse_hexstr_to_binbuff(res.txs[n].as_hex, bd))
+            if (epee::string_tools::parse_hexstr_to_binbuff(tx_entry.as_hex, bd))
             {
               if (cryptonote::parse_and_validate_tx_from_blob(bd, tx, tx_hash, tx_prefix_hash))
               {
-                if (tx_hash == txid)
+                const std::vector<crypto::hash>::const_iterator i = std::find(txids.begin(), txids.end(), tx_hash);
+                if (i != txids.end())
                 {
-                  process_new_transaction(txid, tx, std::vector<uint64_t>(), 0, time(NULL), false, true);
-                  m_scanned_pool_txs[0].insert(txid);
+                  process_new_transaction(tx_hash, tx, std::vector<uint64_t>(), 0, time(NULL), false, true);
+                  m_scanned_pool_txs[0].insert(tx_hash);
                   if (m_scanned_pool_txs[0].size() > 5000)
                   {
                     std::swap(m_scanned_pool_txs[0], m_scanned_pool_txs[1]);
@@ -1564,7 +1563,7 @@ void wallet2::update_pool_state(bool refreshed)
                 }
                 else
                 {
-                  LOG_PRINT_L0("Mismatched txids when processing unconfimed txes from pool");
+                  MERROR("Got txid " << tx_hash << " which we did not ask for");
                 }
               }
               else
@@ -1574,14 +1573,13 @@ void wallet2::update_pool_state(bool refreshed)
             }
             else
             {
-              LOG_PRINT_L0("Failed to parse tx " << txid);
+              LOG_PRINT_L0("Failed to parse transaction from daemon");
             }
           }
           else
           {
-            LOG_PRINT_L1("Tx " << txid << " was in pool, but is no more");
+            LOG_PRINT_L1("Transaction from daemon was in pool, but is no more");
           }
-          ++n;
         }
       }
       else