Copied libcurl's ftp example

Joel Grunbaum

2022-01-11 0594ac9ba0f38944ef810b5ac48a2067b1ce5a09

 protocol.cpp

@@ -170,7 +170,7 @@
void tradeOrder(std::unordered_map<std::string, book::Book>& bs,
                json::TradeMessage* message)
{
   if (bs.contains(message->passiveOrder)) {
   if (bs.find(message->passiveOrder) != bs.end()) {
      if (message->tradeType == json::BUY_AGGRESSOR) {
         if (message->passiveOrderRemaining > 0) {
            bs[message->product].askSide.at(message->passiveOrder).volume =