diff --git a/include/ndn-cpp/transport/transport.hpp b/include/ndn-cpp/transport/transport.hpp
index 59af6d1..064107b 100644
--- a/include/ndn-cpp/transport/transport.hpp
+++ b/include/ndn-cpp/transport/transport.hpp
@@ -12,11 +12,14 @@
 
 #include <vector>
 #include <boost/asio.hpp>
+#include <boost/lexical_cast.hpp>
 
 namespace ndn {
 
 class Transport {
 public:
+  struct Error : public std::runtime_error { inline Error(const boost::system::error_code &code, const std::string &msg); };
+  
   typedef ptr_lib::function<void (const Block &wire)> ReceiveCallback;
   typedef ptr_lib::function<void ()> ErrorCallback;
   
@@ -33,8 +36,7 @@
    */
   inline virtual void 
   connect(boost::asio::io_service &io_service,
-          const ReceiveCallback &receiveCallback,
-          const ErrorCallback &errorCallback);
+          const ReceiveCallback &receiveCallback);
   
   /**
    * Close the connection.
@@ -61,7 +63,6 @@
   boost::asio::io_service *ioService_;
   bool isConnected_;
   ReceiveCallback receiveCallback_;
-  ErrorCallback errorCallback_;
 };
 
 inline
@@ -71,6 +72,11 @@
 {
 }
 
+inline Transport::Error::Error(const boost::system::error_code &code, const std::string &msg)
+  : std::runtime_error(msg + (code.value() ? " (" + code.category().message(code.value()) + ")" : ""))
+{
+}
+
 inline
 Transport::~Transport()
 {
@@ -78,12 +84,10 @@
 
 inline void 
 Transport::connect(boost::asio::io_service &ioService,
-                   const ReceiveCallback &receiveCallback,
-                   const ErrorCallback &errorCallback)
+                   const ReceiveCallback &receiveCallback)
 {
   ioService_ = &ioService;
   receiveCallback_ = receiveCallback;
-  errorCallback_ = errorCallback;
 }
 
 inline bool