Clean out some bugs in sender

networkinstruction.cpp

@@ -0,0 +1,23 @@
+#include <endian.h>
+
+#include "networktransport.hpp"
+
+using namespace Network;
+
+static string network_order_string( uint64_t host_order )
+{
+  uint64_t net_int = htobe64( host_order );
+  return string( (char *)&net_int, sizeof( net_int ) );
+}
+
+string Instruction::tostring( void )
+{
+  string ret;
+  
+  ret += network_order_string( old_num );
+  ret += network_order_string( new_num );
+  ret += network_order_string( ack_num );
+  ret += diff;
+
+  return ret;
+}