Cleaned code a bit.

lib/services/timestamp/index.js

@@ -115,6 +115,7 @@ TimestampService.prototype.getBlockHeights = function(timestamps, callback) {
   });
 
   var hashes = [];
+  var hashTuple = [];
   var streamErr = null;
 
   stream.on('data', function(data) {
@@ -127,10 +128,9 @@ TimestampService.prototype.getBlockHeights = function(timestamps, callback) {
 
   stream.on('end', function() {
     if (!streamErr && hashes.length > 1) {
-      var hashTuple = [ hashes[0], hashes[hashes.length - 1] ];
+      hashTuple = [ hashes[0], hashes[hashes.length - 1] ];
-      return callback(null, hashTuple);
     }
-    callback(streamErr);
+    callback(streamErr, hashTuple);
   });
 
 };

lib/services/wallet-api/index.js

@@ -585,25 +585,36 @@ WalletService.prototype._endpointPostAddresses = function() {
 WalletService.prototype._endpointGetTransactions = function() {
   var self = this;
   return function(req, res) {
-    req.setTimeout(600000);
+
     var walletId = req.params.walletId;
+
     self._processStartEndOptions(req, function(err, heights) {
+
+      if(err) {
+        return utils.sendError(err, res);
+      }
+
       var options = {
-        start: heights[0],
+        start: heights[0] || 0,
-        end : heights[1],
+        end : heights[1] || 0xffffffff,
         from: req.query.from,
         to: req.query.to
       };
       self._getTransactions(walletId, options, function(err, transactions) {
+
         if(err) {
           return utils.sendError(err, res);
         }
+
         var rs = new Readable;
+
         transactions.forEach(function(transaction) {
           rs.push(JSON.stringify(self._formatTransaction(transaction)));
         });
+
         rs.push(null);
         rs.pipe(res);
+
       });
     });
   };
@@ -1058,13 +1069,21 @@ WalletService.prototype._storeBalance = function(walletId, balance, callback) {
 
 WalletService.prototype._processStartEndOptions = function(req, callback) {
   var self = this;
+
   if (!(req.query.start && req.query.start < (500 * 1E6))) {
+
     var heights = [];
     self.node.services.timestamp.getBlockHeights([
       utils.normalizeTimeStamp(req.query.start),
       utils.normalizeTimeStamp(req.query.end)
     ],
+
     function(err, hashTuple) {
+
+      if(err) {
+        return callback(err);
+      }
+
       hashTuple.forEach(function(hash) {
         self.node.services.bitcoind._tryAllClients(function(client, done) {
           client.getBlock(hash, function(err, response) {