If I followed what you wrote in your post correctly, I would end up with:
void start_accept()
{
tcp_connection::pointer new_connection =
tcp_connection::create(acceptor_.get_io_service());
//auto callback = std::bind(&tcp_server::handle_accept, this,
new_connection, std::placeholders::_1);
const std::function callback =
std::bind(&tcp_server::handle_accept, this, new_connection,
std::placeholders::_1);
acceptor_.async_accept(new_connection->socket(), std::bind(callback,
this, boost::asio::placeholders::error));
}
Which does not compile. I don't know why I'd bind something that is already
bound or what this would mean in the context of the second bind.
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