Optimised blockchainReCheck

- Check if a new block has come at start of blockchainReCheck
- Checks for confirmation of txns only when a new block in the blockchain

src/market.js

@@ -689,6 +689,8 @@ periodicProcess.stop = function() {
     coupling.price.storeHistory.stop();
 };
 
+var lastSyncBlockHeight = 0;
+
 function blockchainReCheck() {
     if (blockchainReCheck.timeout !== undefined) {
         clearTimeout(blockchainReCheck.timeout);
@@ -697,6 +699,9 @@ function blockchainReCheck() {
     if (!global.sinkID)
         return blockchainReCheck.timeout = setTimeout(blockchainReCheck, WAIT_TIME);
 
+    floBlockchainAPI.promisedAPI('api/blocks?limit=1').then(result => {
+        if (lastSyncBlockHeight < result.blocks[0].height) {
+            lastSyncBlockHeight = result.blocks[0].height;
             confirmDepositFLO();
             confirmDepositToken();
             retryWithdrawalFLO();
@@ -704,6 +709,8 @@ function blockchainReCheck() {
             confirmWithdrawalFLO();
             confirmWithdrawalToken();
         }
+    }).catch(error => console.error(error));
+}
 
 module.exports = {
     login,