add server/client to namespace commons

include/client.hpp

@@ -8,6 +8,8 @@
 
 #include "boost/bind.hpp"
 
+namespace commons {
+
 class client {
  public:
   client(boost::asio::io_service& io_service,
@@ -26,3 +28,5 @@ class client {
   std::string message_;
   unsigned short port_;
 };
+
+}  // namespace commons

include/server.hpp

@@ -7,7 +7,10 @@
 #include "protocol.hpp"
 #include "spdlog/spdlog.h"
 
+namespace commons {
+
 using boost::asio::ip::udp;
+using namespace protocol;
 
 class server {
  public:
@@ -55,3 +58,5 @@ class server {
   enum { max_length = 1024 };
   char data_[max_length];
 };
+
+}  // namespace commons