Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

Socket option for disabling the Nagle algorithm.

typedef implementation_defined no_delay;

Implements the IPPROTO_TCP/TCP_NODELAY socket option.

Setting the option:

boost::asio::ip::tcp::socket socket(io_service); 
...
boost::asio::ip::tcp::no_delay option(true);
socket.set_option(option);

Getting the current option value:

boost::asio::ip::tcp::socket socket(io_service); 
...
boost::asio::ip::tcp::no_delay option;
socket.get_option(option);
bool is_set = option.value();