Changes to keep server running in spite of send errors to the client.

asio/src/tests/dgram_echo_server_test.cpp

@@ -22,17 +22,19 @@ public:
       socket_.async_sendto(data_, length, sender_address_,
           boost::bind(&dgram_handler::handle_sendto, this, _1, _2));
     }
-  }
-
-  void handle_sendto(const socket_error& error, size_t length)
-  {
-    if (!error)
+    else
     {
       socket_.async_recvfrom(data_, max_length, sender_address_,
           boost::bind(&dgram_handler::handle_recvfrom, this, _1, _2));
     }
   }
 
+  void handle_sendto(const socket_error& error, size_t length)
+  {
+    socket_.async_recvfrom(data_, max_length, sender_address_,
+        boost::bind(&dgram_handler::handle_recvfrom, this, _1, _2));
+  }
+
 private:
   demuxer& demuxer_;
   dgram_socket socket_;