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An accept handler must meet the requirements for a handler.
A value h of an accept handler class should work correctly in
the expression h(ec), where ec is an lvalue of
type const error_code.
A free function as an accept handler:
void accept_handler(
const boost::system::error_code& ec)
{
...
}
An accept handler function object:
struct accept_handler
{
...
void operator()(
const boost::system::error_code& ec)
{
...
}
...
};
A lambda as an accept handler:
acceptor.async_accept(...,
[](const boost::system::error_code& ec)
{
...
});
A non-static class member function adapted to an accept handler using std::bind():
void my_class::accept_handler(
const boost::system::error_code& ec)
{
...
}
...
acceptor.async_accept(...,
std::bind(&my_class::accept_handler,
this, std::placeholders::_1));
A non-static class member function adapted to an accept handler using boost::bind():
void my_class::accept_handler(
const boost::system::error_code& ec)
{
...
}
...
acceptor.async_accept(...,
boost::bind(&my_class::accept_handler,
this, boost::asio::placeholders::error));