Sending data from a boost asio client

Question

I am trying to write a program which can send data over a network to my Java server listening on a port.

#include "stdafx.h"

#include <boost/asio.hpp>

#include <boost/array.hpp>

#include <iostream>



void do_somenetwork(std::string host, int port, std::string message)

{

    std::array<char, 1024> _arr;

    boost::asio::io_service ios;

    boost::asio::ip::tcp::endpoint endpoint(boost::asio::ip::address::from_string(host), port);

    boost::asio::ip::tcp::socket socket(ios);

    socket.connect(endpoint);



    boost::array<char, 128> buf;

    std::copy(message.begin(), message.end(), buf.begin());

    boost::system::error_code error;



    socket.write_some(boost::asio::buffer(buf, message.size()), error);



    socket.read_some(boost::asio::buffer(_arr));

    std::cout.write(&_arr[0], 1024);



    socket.close();

}



int main(){

    do_somenetwork(std::string("127.0.0.1"), 50000, ";llsdfsdf");



    char ch;

    std::cin >> ch;

}

When I use this program I keep getting error message as below:

C4996: 'std::_Copy_impl': Function call with parameters that may be unsafe -     this call relies on the caller to check that the passed values are correct. To disable this warning, use -D_SCL_SECURE_NO_WARNINGS. See documentation on how to use Visual C++ 'Checked Iterators' c:\program files (x86)\microsoft visual studio 12.0\vc\include\xutility 2132    1   ConsoleApplication1

I have tried the warning and not found any result related to this error. Is there a better way to write this code? I am really new to C++ and do not have much idea about how Boost is actually working.
I am using Visual Studio 2013 and boost 1.60.0.

Answer 1

Not really the answer to your question but rather a workaround.

I think the error comes from the std::copy call, you could bypass it by using the data method from std::string directly as the buffer array instead of copying it in your boost::array.

Like this :

socket.write_some(boost::asio::buffer(message.data(), message.size()), error);

Sending data from a boost asio client

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