How to find out how much data was sent through a Boost ASIO TCP socket connection?

Question

I have some shared pointers to boost::asio::io_service, boost::asio::ip::tcp::endpoint, boost::asio::ip::tcp::acceptor and boost::asio::ip::tcp::socket. I accept users connection and pass shared_ptr of the socket to some class of mine. It does its work.

Now what I want is simple - count my traffic. I want to get information of how much data was sent and received during that connection. How to get such information from accepted Boost ASIO TCP socket?

This is something you can do in your own code. You don't need any help from boost. — J T
@J T: I try to create an extendable server. I have a concept of services. I pass socket to each service on each user request. And I want to get how much traffic this connection has used. — Rella

Sam Miller Sam Miller · Accepted Answer · 2011-08-17T18:57:23

Assuming you use asynchronous methods, the completion handler given to async_read will indicate the number of bytes received. Similarly, the completion handler given to async_write will indicate the number of bytes written. It would be trivial to maintain a running counter as a member of a class where you bind methods as the previously described completion handlers.

#include <boost/asio.hpp>

#include <iostream>

class Socket
{
public:
    Socket(
            boost::asio::io_service& io_service
          ) :
        _socket( io_service ),
        _counter( 0 )
    {

    }

    void readHandler(
            const boost::system::error_code& error,
            std::size_t bytes_transferred
            )
    {
        _counter += bytes_transferred;
    }

    void writeHHandler(
            const boost::system::error_code& error,
            std::size_t bytes_transferred
            )
    {
        _counter += bytes_transferred;
    }

private:
    boost::asio::ip::tcp::socket _socket;
    std::size_t _counter;
};

int
main()
{
    boost::asio::io_service io_service;
    Socket foo( io_service );
}

How to find out how much data was sent through a Boost ASIO TCP socket connection?

1 Answers