Use symbols to represent side

lib/rex/server/message_parser.rb

@@ -30,7 +30,7 @@ module Rex
         when "order.create"
           Messages::CreateOrderRequest.new(
             nil,
-            parsed_message["args"]["side"],
+            parsed_message["args"]["side"].to_sym,
             parsed_message["args"]["price"],
             parsed_message["args"]["quantity"]
           )

spec/server/message_parser_spec.rb

@@ -60,7 +60,7 @@ RSpec.describe Rex::Server::MessageParser do
       it "returns a order create request" do
         expect(subject).to be_instance_of(Rex::Server::Messages::CreateOrderRequest)
         expect(subject.user_id).to eq(nil)
-        expect(subject.side).to eq("buy")
+        expect(subject.side).to eq(:buy)
         expect(subject.price).to eq(10)
         expect(subject.quantity).to eq(100)
       end